./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 5b36d44f 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-wip.dd.seqcomp-5b36d44 [2021-11-07 14:11:56,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 14:11:56,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 14:11:56,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 14:11:56,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 14:11:56,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 14:11:56,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 14:11:56,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 14:11:56,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 14:11:56,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 14:11:56,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 14:11:56,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 14:11:56,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 14:11:56,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 14:11:56,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 14:11:56,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 14:11:56,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 14:11:56,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 14:11:56,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 14:11:56,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 14:11:56,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 14:11:56,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 14:11:56,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 14:11:56,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 14:11:56,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 14:11:56,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 14:11:56,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 14:11:56,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 14:11:56,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 14:11:56,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 14:11:56,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 14:11:56,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 14:11:56,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 14:11:56,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 14:11:56,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 14:11:56,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 14:11:56,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 14:11:56,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 14:11:56,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 14:11:56,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 14:11:56,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 14:11:56,947 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 14:11:56,987 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 14:11:56,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 14:11:56,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 14:11:56,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 14:11:56,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 14:11:56,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 14:11:56,992 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 14:11:56,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 14:11:56,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 14:11:56,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 14:11:56,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 14:11:56,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 14:11:56,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 14:11:56,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 14:11:56,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 14:11:56,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 14:11:56,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 14:11:57,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 14:11:57,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 14:11:57,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:11:57,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 14:11:57,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 14:11:57,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 14:11:57,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 14:11:57,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 14:11:57,001 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 14:11:57,001 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 14:11:57,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 14:11:57,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 14:11:57,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6c477e3f3753c58922818522be04156e728e59c50f004b5ce835b763e4b3e35 [2021-11-07 14:11:57,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 14:11:57,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 14:11:57,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 14:11:57,230 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 14:11:57,232 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 14:11:57,233 INFO L432 ainManager$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 [2021-11-07 14:11:57,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5900b85/d00716a4eafe4c8cbc4cf8714c577b1a/FLAGc5a4a6993 [2021-11-07 14:11:58,041 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 14:11:58,043 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 [2021-11-07 14:11:58,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5900b85/d00716a4eafe4c8cbc4cf8714c577b1a/FLAGc5a4a6993 [2021-11-07 14:11:58,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef5900b85/d00716a4eafe4c8cbc4cf8714c577b1a [2021-11-07 14:11:58,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 14:11:58,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 14:11:58,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 14:11:58,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 14:11:58,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 14:11:58,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:11:58" (1/1) ... [2021-11-07 14:11:58,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b38d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:58, skipping insertion in model container [2021-11-07 14:11:58,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:11:58" (1/1) ... [2021-11-07 14:11:58,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 14:11:58,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 14:11:59,672 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] [2021-11-07 14:11:59,716 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 14:11:59,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:11:59,772 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 14:12:00,051 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] [2021-11-07 14:12:00,057 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-07 14:12:00,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:12:00,162 INFO L208 MainTranslator]: Completed translation [2021-11-07 14:12:00,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:00 WrapperNode [2021-11-07 14:12:00,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 14:12:00,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 14:12:00,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 14:12:00,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 14:12:00,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:00" (1/1) ... [2021-11-07 14:12:00,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:00" (1/1) ... [2021-11-07 14:12:00,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 14:12:00,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 14:12:00,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 14:12:00,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 14:12:00,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:00" (1/1) ... [2021-11-07 14:12:00,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:00" (1/1) ... [2021-11-07 14:12:00,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:00" (1/1) ... [2021-11-07 14:12:00,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:00" (1/1) ... [2021-11-07 14:12:01,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:00" (1/1) ... [2021-11-07 14:12:01,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:00" (1/1) ... [2021-11-07 14:12:01,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:00" (1/1) ... [2021-11-07 14:12:01,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 14:12:01,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 14:12:01,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 14:12:01,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 14:12:01,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:00" (1/1) ... [2021-11-07 14:12:01,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:12:01,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:12:01,211 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) [2021-11-07 14:12:01,223 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 [2021-11-07 14:12:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 14:12:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 14:12:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 14:12:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 14:12:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-07 14:12:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 14:12:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 14:12:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 14:12:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 14:12:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 14:12:01,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 14:12:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 14:12:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 14:12:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 14:12:01,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 14:12:01,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 14:12:39,749 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 14:12:39,749 INFO L299 CfgBuilder]: Removed 1941 assume(true) statements. [2021-11-07 14:12:39,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:12:39 BoogieIcfgContainer [2021-11-07 14:12:39,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 14:12:39,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 14:12:39,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 14:12:39,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 14:12:39,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:11:58" (1/3) ... [2021-11-07 14:12:39,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fb96af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:12:39, skipping insertion in model container [2021-11-07 14:12:39,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:12:00" (2/3) ... [2021-11-07 14:12:39,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fb96af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:12:39, skipping insertion in model container [2021-11-07 14:12:39,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:12:39" (3/3) ... [2021-11-07 14:12:39,761 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 [2021-11-07 14:12:39,765 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 14:12:39,765 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 14:12:39,810 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 14:12:39,815 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 [2021-11-07 14:12:39,815 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 14:12:39,850 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) [2021-11-07 14:12:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 14:12:39,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:12:39,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:12:39,865 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:12:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:12:39,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1900913398, now seen corresponding path program 1 times [2021-11-07 14:12:39,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:12:39,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680070866] [2021-11-07 14:12:39,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:12:39,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:12:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:12:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:12:40,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:12:40,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680070866] [2021-11-07 14:12:40,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680070866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:12:40,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:12:40,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:12:40,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748121762] [2021-11-07 14:12:40,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:12:40,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 14:12:40,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:12:40,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 14:12:40,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:12:40,514 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) [2021-11-07 14:12:40,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:12:40,676 INFO L93 Difference]: Finished difference Result 3936 states and 5569 transitions. [2021-11-07 14:12:40,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 14:12:40,685 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 [2021-11-07 14:12:40,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:12:40,715 INFO L225 Difference]: With dead ends: 3936 [2021-11-07 14:12:40,715 INFO L226 Difference]: Without dead ends: 1956 [2021-11-07 14:12:40,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.06ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:12:40,730 INFO L933 BasicCegarLoop]: 2759 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 14:12:40,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2759 Invalid, 0 Unknown, 0 Unchecked, 11.59ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 14:12:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2021-11-07 14:12:40,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1956. [2021-11-07 14:12:40,850 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) [2021-11-07 14:12:40,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2735 transitions. [2021-11-07 14:12:40,862 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2735 transitions. Word has length 94 [2021-11-07 14:12:40,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:12:40,863 INFO L470 AbstractCegarLoop]: Abstraction has 1956 states and 2735 transitions. [2021-11-07 14:12:40,863 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) [2021-11-07 14:12:40,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2735 transitions. [2021-11-07 14:12:40,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 14:12:40,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:12:40,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:12:40,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 14:12:40,869 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:12:40,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:12:40,870 INFO L85 PathProgramCache]: Analyzing trace with hash 753017488, now seen corresponding path program 1 times [2021-11-07 14:12:40,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:12:40,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658754282] [2021-11-07 14:12:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:12:40,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:12:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:12:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:12:41,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:12:41,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658754282] [2021-11-07 14:12:41,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658754282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:12:41,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:12:41,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:12:41,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980562312] [2021-11-07 14:12:41,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:12:41,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:12:41,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:12:41,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:12:41,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:12:41,248 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) [2021-11-07 14:12:43,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:12:43,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:12:43,533 INFO L93 Difference]: Finished difference Result 5678 states and 8005 transitions. [2021-11-07 14:12:43,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:12:43,534 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 [2021-11-07 14:12:43,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:12:43,551 INFO L225 Difference]: With dead ends: 5678 [2021-11-07 14:12:43,552 INFO L226 Difference]: Without dead ends: 3800 [2021-11-07 14:12:43,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.14ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:12:43,556 INFO L933 BasicCegarLoop]: 2732 mSDtfsCounter, 2605 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2088.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2605 SdHoareTripleChecker+Valid, 5453 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.27ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2158.57ms IncrementalHoareTripleChecker+Time [2021-11-07 14:12:43,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2605 Valid, 5453 Invalid, 15 Unknown, 0 Unchecked, 13.27ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2158.57ms Time] [2021-11-07 14:12:43,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2021-11-07 14:12:43,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3800. [2021-11-07 14:12:43,647 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) [2021-11-07 14:12:43,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 5350 transitions. [2021-11-07 14:12:43,662 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 5350 transitions. Word has length 94 [2021-11-07 14:12:43,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:12:43,667 INFO L470 AbstractCegarLoop]: Abstraction has 3800 states and 5350 transitions. [2021-11-07 14:12:43,668 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) [2021-11-07 14:12:43,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 5350 transitions. [2021-11-07 14:12:43,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 14:12:43,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:12:43,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:12:43,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 14:12:43,678 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:12:43,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:12:43,682 INFO L85 PathProgramCache]: Analyzing trace with hash -493821856, now seen corresponding path program 1 times [2021-11-07 14:12:43,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:12:43,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392554767] [2021-11-07 14:12:43,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:12:43,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:12:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:12:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:12:44,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:12:44,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392554767] [2021-11-07 14:12:44,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392554767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:12:44,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:12:44,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:12:44,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012415472] [2021-11-07 14:12:44,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:12:44,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:12:44,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:12:44,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:12:44,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:12:44,044 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) [2021-11-07 14:12:44,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:12:44,200 INFO L93 Difference]: Finished difference Result 7522 states and 10617 transitions. [2021-11-07 14:12:44,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:12:44,201 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 [2021-11-07 14:12:44,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:12:44,234 INFO L225 Difference]: With dead ends: 7522 [2021-11-07 14:12:44,235 INFO L226 Difference]: Without dead ends: 7518 [2021-11-07 14:12:44,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:12:44,248 INFO L933 BasicCegarLoop]: 2736 mSDtfsCounter, 2636 mSDsluCounter, 2650 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2636 SdHoareTripleChecker+Valid, 5386 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.59ms IncrementalHoareTripleChecker+Time [2021-11-07 14:12:44,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2636 Valid, 5386 Invalid, 3 Unknown, 0 Unchecked, 11.23ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 10.59ms Time] [2021-11-07 14:12:44,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7518 states. [2021-11-07 14:12:44,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7518 to 7518. [2021-11-07 14:12:44,454 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) [2021-11-07 14:12:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7518 states to 7518 states and 10611 transitions. [2021-11-07 14:12:44,483 INFO L78 Accepts]: Start accepts. Automaton has 7518 states and 10611 transitions. Word has length 98 [2021-11-07 14:12:44,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:12:44,485 INFO L470 AbstractCegarLoop]: Abstraction has 7518 states and 10611 transitions. [2021-11-07 14:12:44,485 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) [2021-11-07 14:12:44,485 INFO L276 IsEmpty]: Start isEmpty. Operand 7518 states and 10611 transitions. [2021-11-07 14:12:44,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-07 14:12:44,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:12:44,500 INFO L514 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] [2021-11-07 14:12:44,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 14:12:44,501 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:12:44,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:12:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash 645158019, now seen corresponding path program 1 times [2021-11-07 14:12:44,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:12:44,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460988512] [2021-11-07 14:12:44,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:12:44,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:12:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:12:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:12:44,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:12:44,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460988512] [2021-11-07 14:12:44,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460988512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:12:44,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:12:44,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:12:44,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192244318] [2021-11-07 14:12:44,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:12:44,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:12:44,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:12:44,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:12:44,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:12:44,773 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) [2021-11-07 14:12:45,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:12:45,233 INFO L93 Difference]: Finished difference Result 21152 states and 29896 transitions. [2021-11-07 14:12:45,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:12:45,234 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 [2021-11-07 14:12:45,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:12:45,308 INFO L225 Difference]: With dead ends: 21152 [2021-11-07 14:12:45,308 INFO L226 Difference]: Without dead ends: 13712 [2021-11-07 14:12:45,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:12:45,331 INFO L933 BasicCegarLoop]: 2741 mSDtfsCounter, 2269 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 5384 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.36ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.54ms IncrementalHoareTripleChecker+Time [2021-11-07 14:12:45,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2269 Valid, 5384 Invalid, 11 Unknown, 0 Unchecked, 9.36ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 84.54ms Time] [2021-11-07 14:12:45,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13712 states. [2021-11-07 14:12:45,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13712 to 13698. [2021-11-07 14:12:45,682 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) [2021-11-07 14:12:45,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13698 states to 13698 states and 19351 transitions. [2021-11-07 14:12:45,741 INFO L78 Accepts]: Start accepts. Automaton has 13698 states and 19351 transitions. Word has length 167 [2021-11-07 14:12:45,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:12:45,742 INFO L470 AbstractCegarLoop]: Abstraction has 13698 states and 19351 transitions. [2021-11-07 14:12:45,742 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) [2021-11-07 14:12:45,743 INFO L276 IsEmpty]: Start isEmpty. Operand 13698 states and 19351 transitions. [2021-11-07 14:12:45,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-07 14:12:45,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:12:45,761 INFO L514 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] [2021-11-07 14:12:45,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 14:12:45,762 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:12:45,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:12:45,764 INFO L85 PathProgramCache]: Analyzing trace with hash -256455826, now seen corresponding path program 1 times [2021-11-07 14:12:45,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:12:45,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704528758] [2021-11-07 14:12:45,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:12:45,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:12:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:12:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 14:12:46,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:12:46,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704528758] [2021-11-07 14:12:46,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704528758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:12:46,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:12:46,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:12:46,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199810874] [2021-11-07 14:12:46,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:12:46,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:12:46,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:12:46,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:12:46,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:12:46,089 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) [2021-11-07 14:12:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:12:46,995 INFO L93 Difference]: Finished difference Result 39786 states and 56223 transitions. [2021-11-07 14:12:46,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:12:46,996 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 [2021-11-07 14:12:46,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:12:47,072 INFO L225 Difference]: With dead ends: 39786 [2021-11-07 14:12:47,073 INFO L226 Difference]: Without dead ends: 26166 [2021-11-07 14:12:47,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.53ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:12:47,111 INFO L933 BasicCegarLoop]: 4552 mSDtfsCounter, 2560 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 419.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2560 SdHoareTripleChecker+Valid, 6963 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.71ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 474.73ms IncrementalHoareTripleChecker+Time [2021-11-07 14:12:47,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2560 Valid, 6963 Invalid, 198 Unknown, 0 Unchecked, 13.71ms Time], IncrementalHoareTripleChecker [90 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 474.73ms Time] [2021-11-07 14:12:47,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26166 states. [2021-11-07 14:12:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26166 to 13954. [2021-11-07 14:12:47,717 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) [2021-11-07 14:12:47,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13954 states to 13954 states and 19607 transitions. [2021-11-07 14:12:47,756 INFO L78 Accepts]: Start accepts. Automaton has 13954 states and 19607 transitions. Word has length 208 [2021-11-07 14:12:47,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:12:47,756 INFO L470 AbstractCegarLoop]: Abstraction has 13954 states and 19607 transitions. [2021-11-07 14:12:47,757 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) [2021-11-07 14:12:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 13954 states and 19607 transitions. [2021-11-07 14:12:47,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-07 14:12:47,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:12:47,777 INFO L514 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] [2021-11-07 14:12:47,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 14:12:47,778 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:12:47,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:12:47,780 INFO L85 PathProgramCache]: Analyzing trace with hash 958334802, now seen corresponding path program 1 times [2021-11-07 14:12:47,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:12:47,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225796423] [2021-11-07 14:12:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:12:47,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:12:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:12:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 14:12:48,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:12:48,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225796423] [2021-11-07 14:12:48,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225796423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:12:48,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:12:48,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 14:12:48,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685221204] [2021-11-07 14:12:48,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:12:48,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:12:48,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:12:48,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:12:48,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:12:48,095 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) [2021-11-07 14:12:50,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:12:50,072 INFO L93 Difference]: Finished difference Result 65322 states and 91703 transitions. [2021-11-07 14:12:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 14:12:50,073 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 [2021-11-07 14:12:50,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:12:50,245 INFO L225 Difference]: With dead ends: 65322 [2021-11-07 14:12:50,245 INFO L226 Difference]: Without dead ends: 51446 [2021-11-07 14:12:50,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:12:50,293 INFO L933 BasicCegarLoop]: 7387 mSDtfsCounter, 7035 mSDsluCounter, 9723 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 632.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7035 SdHoareTripleChecker+Valid, 17110 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.13ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 696.75ms IncrementalHoareTripleChecker+Time [2021-11-07 14:12:50,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7035 Valid, 17110 Invalid, 211 Unknown, 0 Unchecked, 34.13ms Time], IncrementalHoareTripleChecker [28 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 696.75ms Time] [2021-11-07 14:12:50,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51446 states. [2021-11-07 14:12:50,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51446 to 13962. [2021-11-07 14:12:51,022 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) [2021-11-07 14:12:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13962 states to 13962 states and 19615 transitions. [2021-11-07 14:12:51,240 INFO L78 Accepts]: Start accepts. Automaton has 13962 states and 19615 transitions. Word has length 210 [2021-11-07 14:12:51,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:12:51,241 INFO L470 AbstractCegarLoop]: Abstraction has 13962 states and 19615 transitions. [2021-11-07 14:12:51,241 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) [2021-11-07 14:12:51,241 INFO L276 IsEmpty]: Start isEmpty. Operand 13962 states and 19615 transitions. [2021-11-07 14:12:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-07 14:12:51,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:12:51,259 INFO L514 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] [2021-11-07 14:12:51,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 14:12:51,260 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:12:51,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:12:51,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1564351022, now seen corresponding path program 1 times [2021-11-07 14:12:51,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:12:51,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429768088] [2021-11-07 14:12:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:12:51,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:12:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:12:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 14:12:51,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:12:51,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429768088] [2021-11-07 14:12:51,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429768088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:12:51,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:12:51,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 14:12:51,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647685509] [2021-11-07 14:12:51,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:12:51,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:12:51,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:12:51,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:12:51,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:12:51,611 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) [2021-11-07 14:12:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:12:53,323 INFO L93 Difference]: Finished difference Result 67186 states and 94475 transitions. [2021-11-07 14:12:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 14:12:53,324 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 [2021-11-07 14:12:53,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:12:53,510 INFO L225 Difference]: With dead ends: 67186 [2021-11-07 14:12:53,511 INFO L226 Difference]: Without dead ends: 53302 [2021-11-07 14:12:53,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.27ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:12:53,555 INFO L933 BasicCegarLoop]: 9881 mSDtfsCounter, 5110 mSDsluCounter, 9905 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5110 SdHoareTripleChecker+Valid, 19786 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.46ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 172.15ms IncrementalHoareTripleChecker+Time [2021-11-07 14:12:53,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5110 Valid, 19786 Invalid, 45 Unknown, 0 Unchecked, 32.46ms Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 172.15ms Time] [2021-11-07 14:12:53,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53302 states. [2021-11-07 14:12:54,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53302 to 13970. [2021-11-07 14:12:54,349 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) [2021-11-07 14:12:54,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13970 states to 13970 states and 19623 transitions. [2021-11-07 14:12:54,377 INFO L78 Accepts]: Start accepts. Automaton has 13970 states and 19623 transitions. Word has length 210 [2021-11-07 14:12:54,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:12:54,378 INFO L470 AbstractCegarLoop]: Abstraction has 13970 states and 19623 transitions. [2021-11-07 14:12:54,378 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) [2021-11-07 14:12:54,378 INFO L276 IsEmpty]: Start isEmpty. Operand 13970 states and 19623 transitions. [2021-11-07 14:12:54,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-07 14:12:54,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:12:54,397 INFO L514 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] [2021-11-07 14:12:54,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 14:12:54,397 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:12:54,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:12:54,398 INFO L85 PathProgramCache]: Analyzing trace with hash 770784155, now seen corresponding path program 1 times [2021-11-07 14:12:54,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:12:54,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143230228] [2021-11-07 14:12:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:12:54,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:12:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:12:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 14:12:54,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:12:54,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143230228] [2021-11-07 14:12:54,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143230228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:12:54,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:12:54,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:12:54,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645277688] [2021-11-07 14:12:54,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:12:54,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:12:54,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:12:54,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:12:54,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:12:54,806 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) [2021-11-07 14:12:55,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:12:55,670 INFO L93 Difference]: Finished difference Result 41718 states and 58631 transitions. [2021-11-07 14:12:55,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:12:55,671 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 [2021-11-07 14:12:55,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:12:55,741 INFO L225 Difference]: With dead ends: 41718 [2021-11-07 14:12:55,741 INFO L226 Difference]: Without dead ends: 27826 [2021-11-07 14:12:55,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.45ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:12:55,767 INFO L933 BasicCegarLoop]: 2729 mSDtfsCounter, 2531 mSDsluCounter, 2625 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 5354 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.44ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.79ms IncrementalHoareTripleChecker+Time [2021-11-07 14:12:55,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2531 Valid, 5354 Invalid, 25 Unknown, 0 Unchecked, 6.44ms Time], IncrementalHoareTripleChecker [10 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 65.79ms Time] [2021-11-07 14:12:55,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27826 states. [2021-11-07 14:12:56,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27826 to 24654. [2021-11-07 14:12:56,404 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) [2021-11-07 14:12:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24654 states to 24654 states and 34844 transitions. [2021-11-07 14:12:56,464 INFO L78 Accepts]: Start accepts. Automaton has 24654 states and 34844 transitions. Word has length 216 [2021-11-07 14:12:56,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:12:56,465 INFO L470 AbstractCegarLoop]: Abstraction has 24654 states and 34844 transitions. [2021-11-07 14:12:56,466 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) [2021-11-07 14:12:56,466 INFO L276 IsEmpty]: Start isEmpty. Operand 24654 states and 34844 transitions. [2021-11-07 14:12:56,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-07 14:12:56,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:12:56,503 INFO L514 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] [2021-11-07 14:12:56,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 14:12:56,503 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:12:56,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:12:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash -580959769, now seen corresponding path program 1 times [2021-11-07 14:12:56,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:12:56,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808358403] [2021-11-07 14:12:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:12:56,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:12:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:12:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 14:12:56,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:12:56,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808358403] [2021-11-07 14:12:56,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808358403] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:12:56,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169970021] [2021-11-07 14:12:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:12:56,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:12:56,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:12:56,875 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) [2021-11-07 14:12:56,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 14:12:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:12:58,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 4039 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 14:12:58,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:12:59,246 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 14:12:59,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:12:59,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169970021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:12:59,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:12:59,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-07 14:12:59,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591329051] [2021-11-07 14:12:59,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:12:59,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:12:59,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:12:59,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:12:59,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:12:59,248 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) [2021-11-07 14:13:01,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:13:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:13:03,309 INFO L93 Difference]: Finished difference Result 73808 states and 104367 transitions. [2021-11-07 14:13:03,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 14:13:03,310 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 [2021-11-07 14:13:03,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:13:03,503 INFO L225 Difference]: With dead ends: 73808 [2021-11-07 14:13:03,503 INFO L226 Difference]: Without dead ends: 73804 [2021-11-07 14:13:03,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.51ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:13:03,539 INFO L933 BasicCegarLoop]: 5369 mSDtfsCounter, 5164 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2142.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5164 SdHoareTripleChecker+Valid, 10818 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.94ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2227.12ms IncrementalHoareTripleChecker+Time [2021-11-07 14:13:03,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5164 Valid, 10818 Invalid, 42 Unknown, 0 Unchecked, 13.94ms Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 1 Unknown, 0 Unchecked, 2227.12ms Time] [2021-11-07 14:13:03,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73804 states. [2021-11-07 14:13:05,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73804 to 73594. [2021-11-07 14:13:05,814 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) [2021-11-07 14:13:06,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73594 states to 73594 states and 104100 transitions. [2021-11-07 14:13:06,083 INFO L78 Accepts]: Start accepts. Automaton has 73594 states and 104100 transitions. Word has length 217 [2021-11-07 14:13:06,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:13:06,083 INFO L470 AbstractCegarLoop]: Abstraction has 73594 states and 104100 transitions. [2021-11-07 14:13:06,084 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) [2021-11-07 14:13:06,084 INFO L276 IsEmpty]: Start isEmpty. Operand 73594 states and 104100 transitions. [2021-11-07 14:13:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-07 14:13:06,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:13:06,148 INFO L514 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] [2021-11-07 14:13:06,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 14:13:06,363 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 [2021-11-07 14:13:06,364 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:13:06,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:13:06,364 INFO L85 PathProgramCache]: Analyzing trace with hash 2125659625, now seen corresponding path program 1 times [2021-11-07 14:13:06,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:13:06,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459181645] [2021-11-07 14:13:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:13:06,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:13:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:13:07,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 14:13:07,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:13:07,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459181645] [2021-11-07 14:13:07,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459181645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:13:07,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:13:07,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 14:13:07,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551097545] [2021-11-07 14:13:07,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:13:07,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 14:13:07,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:13:07,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 14:13:07,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:13:07,006 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) [2021-11-07 14:13:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:13:16,595 INFO L93 Difference]: Finished difference Result 350102 states and 495436 transitions. [2021-11-07 14:13:16,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 14:13:16,595 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 [2021-11-07 14:13:16,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:13:17,299 INFO L225 Difference]: With dead ends: 350102 [2021-11-07 14:13:17,299 INFO L226 Difference]: Without dead ends: 276586 [2021-11-07 14:13:17,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 156.30ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:13:17,673 INFO L933 BasicCegarLoop]: 5025 mSDtfsCounter, 13725 mSDsluCounter, 12742 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 187.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13725 SdHoareTripleChecker+Valid, 17767 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.28ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 207.56ms IncrementalHoareTripleChecker+Time [2021-11-07 14:13:17,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13725 Valid, 17767 Invalid, 60 Unknown, 0 Unchecked, 24.28ms Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 207.56ms Time] [2021-11-07 14:13:17,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276586 states. [2021-11-07 14:13:21,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276586 to 73666. [2021-11-07 14:13:22,047 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) [2021-11-07 14:13:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73666 states to 73666 states and 104172 transitions. [2021-11-07 14:13:22,194 INFO L78 Accepts]: Start accepts. Automaton has 73666 states and 104172 transitions. Word has length 217 [2021-11-07 14:13:22,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:13:22,195 INFO L470 AbstractCegarLoop]: Abstraction has 73666 states and 104172 transitions. [2021-11-07 14:13:22,195 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) [2021-11-07 14:13:22,195 INFO L276 IsEmpty]: Start isEmpty. Operand 73666 states and 104172 transitions. [2021-11-07 14:13:22,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-07 14:13:22,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:13:22,261 INFO L514 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] [2021-11-07 14:13:22,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 14:13:22,262 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 14:13:22,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:13:22,262 INFO L85 PathProgramCache]: Analyzing trace with hash -768494651, now seen corresponding path program 1 times [2021-11-07 14:13:22,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:13:22,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958463322] [2021-11-07 14:13:22,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:13:22,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:13:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:13:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 14:13:22,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:13:22,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958463322] [2021-11-07 14:13:22,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958463322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:13:22,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:13:22,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:13:22,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311680885] [2021-11-07 14:13:22,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:13:22,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:13:22,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:13:22,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:13:22,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:13:22,608 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) [2021-11-07 14:13:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:13:27,812 INFO L93 Difference]: Finished difference Result 199914 states and 282374 transitions. [2021-11-07 14:13:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:13:27,813 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 219 [2021-11-07 14:13:27,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:13:28,117 INFO L225 Difference]: With dead ends: 199914 [2021-11-07 14:13:28,117 INFO L226 Difference]: Without dead ends: 126326 [2021-11-07 14:13:28,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:13:28,208 INFO L933 BasicCegarLoop]: 4472 mSDtfsCounter, 2402 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 265.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 6690 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.22ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 303.86ms IncrementalHoareTripleChecker+Time [2021-11-07 14:13:28,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2402 Valid, 6690 Invalid, 96 Unknown, 0 Unchecked, 7.22ms Time], IncrementalHoareTripleChecker [25 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 303.86ms Time] [2021-11-07 14:13:28,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126326 states.