./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.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 ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:29:48,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:29:48,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:29:49,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:29:49,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:29:49,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:29:49,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:29:49,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:29:49,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:29:49,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:29:49,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:29:49,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:29:49,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:29:49,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:29:49,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:29:49,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:29:49,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:29:49,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:29:49,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:29:49,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:29:49,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:29:49,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:29:49,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:29:49,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:29:49,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:29:49,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:29:49,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:29:49,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:29:49,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:29:49,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:29:49,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:29:49,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:29:49,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:29:49,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:29:49,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:29:49,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:29:49,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:29:49,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:29:49,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:29:49,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:29:49,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:29:49,079 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:29:49,117 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:29:49,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:29:49,118 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:29:49,118 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:29:49,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:29:49,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:29:49,120 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:29:49,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:29:49,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:29:49,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:29:49,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:29:49,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:29:49,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:29:49,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:29:49,122 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:29:49,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:29:49,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:29:49,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:29:49,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:29:49,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:29:49,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:29:49,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:29:49,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:29:49,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:29:49,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:29:49,124 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:29:49,124 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:29:49,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:29:49,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:29:49,125 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b [2021-11-06 15:29:49,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:29:49,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:29:49,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:29:49,366 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:29:49,367 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:29:49,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:29:49,428 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd07ae449/0104dc47b19148298f9f576eddbe1fbd/FLAG454dded4a [2021-11-06 15:29:50,100 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:29:50,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:29:50,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd07ae449/0104dc47b19148298f9f576eddbe1fbd/FLAG454dded4a [2021-11-06 15:29:50,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd07ae449/0104dc47b19148298f9f576eddbe1fbd [2021-11-06 15:29:50,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:29:50,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:29:50,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:29:50,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:29:50,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:29:50,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:29:50" (1/1) ... [2021-11-06 15:29:50,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53116be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:50, skipping insertion in model container [2021-11-06 15:29:50,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:29:50" (1/1) ... [2021-11-06 15:29:50,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:29:50,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:29:51,448 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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2021-11-06 15:29:51,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:29:51,532 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:29:51,820 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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2021-11-06 15:29:51,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:29:51,886 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:29:51,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:51 WrapperNode [2021-11-06 15:29:51,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:29:51,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:29:51,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:29:51,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:29:51,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:51" (1/1) ... [2021-11-06 15:29:51,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:51" (1/1) ... [2021-11-06 15:29:52,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:29:52,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:29:52,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:29:52,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:29:52,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:51" (1/1) ... [2021-11-06 15:29:52,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:51" (1/1) ... [2021-11-06 15:29:53,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:51" (1/1) ... [2021-11-06 15:29:53,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:51" (1/1) ... [2021-11-06 15:29:53,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:51" (1/1) ... [2021-11-06 15:29:53,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:51" (1/1) ... [2021-11-06 15:29:53,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:51" (1/1) ... [2021-11-06 15:29:54,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:29:54,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:29:54,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:29:54,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:29:54,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:51" (1/1) ... [2021-11-06 15:29:54,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:29:54,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:29:54,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 15:29:54,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 15:29:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:29:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 15:29:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:29:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:29:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:29:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:29:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:29:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:29:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:29:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 15:29:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:29:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:29:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:29:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:29:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:29:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:29:54,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:33:02,122 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:33:02,123 INFO L299 CfgBuilder]: Removed 5913 assume(true) statements. [2021-11-06 15:33:02,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:33:02 BoogieIcfgContainer [2021-11-06 15:33:02,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:33:02,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:33:02,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:33:02,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:33:02,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:29:50" (1/3) ... [2021-11-06 15:33:02,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73377009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:33:02, skipping insertion in model container [2021-11-06 15:33:02,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:29:51" (2/3) ... [2021-11-06 15:33:02,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73377009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:33:02, skipping insertion in model container [2021-11-06 15:33:02,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:33:02" (3/3) ... [2021-11-06 15:33:02,141 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:33:02,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:33:02,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-06 15:33:02,204 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:33:02,214 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 15:33:02,215 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-06 15:33:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 6793 states, 6788 states have (on average 1.459634649381261) internal successors, (9908), 6792 states have internal predecessors, (9908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:02,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 15:33:02,325 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:02,326 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:33:02,327 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:02,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:02,334 INFO L85 PathProgramCache]: Analyzing trace with hash -597361012, now seen corresponding path program 1 times [2021-11-06 15:33:02,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:02,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990192401] [2021-11-06 15:33:02,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:02,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:03,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:03,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:03,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990192401] [2021-11-06 15:33:03,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990192401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:03,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:03,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:33:03,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509439370] [2021-11-06 15:33:03,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:33:03,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:03,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:33:03,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:33:03,203 INFO L87 Difference]: Start difference. First operand has 6793 states, 6788 states have (on average 1.459634649381261) internal successors, (9908), 6792 states have internal predecessors, (9908), 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 33.5) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:03,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:03,437 INFO L93 Difference]: Finished difference Result 13582 states and 19811 transitions. [2021-11-06 15:33:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:33:03,438 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 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 67 [2021-11-06 15:33:03,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:03,486 INFO L225 Difference]: With dead ends: 13582 [2021-11-06 15:33:03,487 INFO L226 Difference]: Without dead ends: 6781 [2021-11-06 15:33:03,505 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:33:03,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6781 states. [2021-11-06 15:33:03,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6781 to 6781. [2021-11-06 15:33:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6781 states, 6777 states have (on average 1.428655747380847) internal successors, (9682), 6780 states have internal predecessors, (9682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6781 states to 6781 states and 9682 transitions. [2021-11-06 15:33:03,760 INFO L78 Accepts]: Start accepts. Automaton has 6781 states and 9682 transitions. Word has length 67 [2021-11-06 15:33:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:03,760 INFO L470 AbstractCegarLoop]: Abstraction has 6781 states and 9682 transitions. [2021-11-06 15:33:03,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:03,761 INFO L276 IsEmpty]: Start isEmpty. Operand 6781 states and 9682 transitions. [2021-11-06 15:33:03,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 15:33:03,763 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:03,763 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:33:03,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:33:03,764 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:03,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:03,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1226720446, now seen corresponding path program 1 times [2021-11-06 15:33:03,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:03,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426840450] [2021-11-06 15:33:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:03,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:04,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:04,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426840450] [2021-11-06 15:33:04,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426840450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:04,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:04,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:33:04,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425646087] [2021-11-06 15:33:04,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:33:04,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:04,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:33:04,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:04,260 INFO L87 Difference]: Start difference. First operand 6781 states and 9682 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:06,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:06,862 INFO L93 Difference]: Finished difference Result 20143 states and 28812 transitions. [2021-11-06 15:33:06,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:33:06,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2021-11-06 15:33:06,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:06,920 INFO L225 Difference]: With dead ends: 20143 [2021-11-06 15:33:06,921 INFO L226 Difference]: Without dead ends: 13421 [2021-11-06 15:33:06,938 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:06,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13421 states. [2021-11-06 15:33:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13421 to 13421. [2021-11-06 15:33:07,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13421 states, 13417 states have (on average 1.4308712827010508) internal successors, (19198), 13420 states have internal predecessors, (19198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13421 states to 13421 states and 19198 transitions. [2021-11-06 15:33:07,515 INFO L78 Accepts]: Start accepts. Automaton has 13421 states and 19198 transitions. Word has length 67 [2021-11-06 15:33:07,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:07,517 INFO L470 AbstractCegarLoop]: Abstraction has 13421 states and 19198 transitions. [2021-11-06 15:33:07,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:07,518 INFO L276 IsEmpty]: Start isEmpty. Operand 13421 states and 19198 transitions. [2021-11-06 15:33:07,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 15:33:07,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:07,522 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:33:07,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:33:07,523 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:07,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:07,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2061512005, now seen corresponding path program 1 times [2021-11-06 15:33:07,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:07,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633977093] [2021-11-06 15:33:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:07,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:07,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:07,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633977093] [2021-11-06 15:33:07,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633977093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:07,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:07,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:33:07,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037937230] [2021-11-06 15:33:07,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:33:07,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:07,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:33:07,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:07,927 INFO L87 Difference]: Start difference. First operand 13421 states and 19198 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:08,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:08,333 INFO L93 Difference]: Finished difference Result 26779 states and 38322 transitions. [2021-11-06 15:33:08,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:33:08,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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 79 [2021-11-06 15:33:08,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:08,423 INFO L225 Difference]: With dead ends: 26779 [2021-11-06 15:33:08,424 INFO L226 Difference]: Without dead ends: 26768 [2021-11-06 15:33:08,442 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:08,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26768 states. [2021-11-06 15:33:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26768 to 26768. [2021-11-06 15:33:09,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26768 states, 26765 states have (on average 1.4313469082757333) internal successors, (38310), 26767 states have internal predecessors, (38310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:09,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26768 states to 26768 states and 38310 transitions. [2021-11-06 15:33:09,139 INFO L78 Accepts]: Start accepts. Automaton has 26768 states and 38310 transitions. Word has length 79 [2021-11-06 15:33:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:09,141 INFO L470 AbstractCegarLoop]: Abstraction has 26768 states and 38310 transitions. [2021-11-06 15:33:09,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 26768 states and 38310 transitions. [2021-11-06 15:33:09,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 15:33:09,146 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:09,147 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:33:09,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:33:09,147 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:09,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:09,148 INFO L85 PathProgramCache]: Analyzing trace with hash 708206509, now seen corresponding path program 1 times [2021-11-06 15:33:09,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:09,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183879209] [2021-11-06 15:33:09,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:09,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:09,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:09,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183879209] [2021-11-06 15:33:09,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183879209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:09,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:09,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 15:33:09,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368829403] [2021-11-06 15:33:09,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:33:09,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:09,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:33:09,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:33:09,739 INFO L87 Difference]: Start difference. First operand 26768 states and 38310 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:12,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:12,160 INFO L93 Difference]: Finished difference Result 120142 states and 172012 transitions. [2021-11-06 15:33:12,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 15:33:12,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 85 [2021-11-06 15:33:12,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:12,726 INFO L225 Difference]: With dead ends: 120142 [2021-11-06 15:33:12,727 INFO L226 Difference]: Without dead ends: 93433 [2021-11-06 15:33:12,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-06 15:33:12,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93433 states. [2021-11-06 15:33:14,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93433 to 26772. [2021-11-06 15:33:14,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26772 states, 26769 states have (on average 1.43128245358437) internal successors, (38314), 26771 states have internal predecessors, (38314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:14,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26772 states to 26772 states and 38314 transitions. [2021-11-06 15:33:14,257 INFO L78 Accepts]: Start accepts. Automaton has 26772 states and 38314 transitions. Word has length 85 [2021-11-06 15:33:14,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:14,258 INFO L470 AbstractCegarLoop]: Abstraction has 26772 states and 38314 transitions. [2021-11-06 15:33:14,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 26772 states and 38314 transitions. [2021-11-06 15:33:14,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-06 15:33:14,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:14,276 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 15:33:14,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:33:14,279 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:14,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:14,280 INFO L85 PathProgramCache]: Analyzing trace with hash -593319977, now seen corresponding path program 1 times [2021-11-06 15:33:14,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:14,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145444312] [2021-11-06 15:33:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:14,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:33:14,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:14,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145444312] [2021-11-06 15:33:14,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145444312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:14,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:14,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:33:14,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977683214] [2021-11-06 15:33:14,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:33:14,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:14,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:33:14,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:33:14,733 INFO L87 Difference]: Start difference. First operand 26772 states and 38314 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:15,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:15,878 INFO L93 Difference]: Finished difference Result 60216 states and 86174 transitions. [2021-11-06 15:33:15,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:33:15,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 105 [2021-11-06 15:33:15,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:15,971 INFO L225 Difference]: With dead ends: 60216 [2021-11-06 15:33:15,972 INFO L226 Difference]: Without dead ends: 33503 [2021-11-06 15:33:16,032 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:33:16,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33503 states. [2021-11-06 15:33:16,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33503 to 20132. [2021-11-06 15:33:16,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20132 states, 20129 states have (on average 1.4305728054051368) internal successors, (28796), 20131 states have internal predecessors, (28796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:16,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20132 states to 20132 states and 28796 transitions. [2021-11-06 15:33:16,816 INFO L78 Accepts]: Start accepts. Automaton has 20132 states and 28796 transitions. Word has length 105 [2021-11-06 15:33:16,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:16,817 INFO L470 AbstractCegarLoop]: Abstraction has 20132 states and 28796 transitions. [2021-11-06 15:33:16,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:16,818 INFO L276 IsEmpty]: Start isEmpty. Operand 20132 states and 28796 transitions. [2021-11-06 15:33:16,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-06 15:33:16,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:16,838 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:16,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:33:16,839 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:16,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:16,839 INFO L85 PathProgramCache]: Analyzing trace with hash 961569095, now seen corresponding path program 1 times [2021-11-06 15:33:16,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:16,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513500067] [2021-11-06 15:33:16,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:16,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 15:33:17,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:17,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513500067] [2021-11-06 15:33:17,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513500067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:17,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:33:17,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:33:17,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293999738] [2021-11-06 15:33:17,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:33:17,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:17,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:33:17,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:17,755 INFO L87 Difference]: Start difference. First operand 20132 states and 28796 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:18,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:18,769 INFO L93 Difference]: Finished difference Result 40250 states and 57587 transitions. [2021-11-06 15:33:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:33:18,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-06 15:33:18,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:18,823 INFO L225 Difference]: With dead ends: 40250 [2021-11-06 15:33:18,823 INFO L226 Difference]: Without dead ends: 20142 [2021-11-06 15:33:18,850 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:33:18,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20142 states. [2021-11-06 15:33:19,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20142 to 20142. [2021-11-06 15:33:19,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20142 states, 20139 states have (on average 1.430359004915835) internal successors, (28806), 20141 states have internal predecessors, (28806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:19,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20142 states to 20142 states and 28806 transitions. [2021-11-06 15:33:19,386 INFO L78 Accepts]: Start accepts. Automaton has 20142 states and 28806 transitions. Word has length 130 [2021-11-06 15:33:19,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:19,386 INFO L470 AbstractCegarLoop]: Abstraction has 20142 states and 28806 transitions. [2021-11-06 15:33:19,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:19,387 INFO L276 IsEmpty]: Start isEmpty. Operand 20142 states and 28806 transitions. [2021-11-06 15:33:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 15:33:19,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:19,405 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:19,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:33:19,405 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:19,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:19,406 INFO L85 PathProgramCache]: Analyzing trace with hash 866099111, now seen corresponding path program 1 times [2021-11-06 15:33:19,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:19,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948637518] [2021-11-06 15:33:19,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:19,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 15:33:20,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:20,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948637518] [2021-11-06 15:33:20,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948637518] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:33:20,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110834693] [2021-11-06 15:33:20,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:20,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:33:20,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:33:20,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:33:20,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 15:33:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:22,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 5181 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 15:33:22,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:33:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 15:33:24,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110834693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:24,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:33:24,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-06 15:33:24,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301557152] [2021-11-06 15:33:24,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:33:24,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:24,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:33:24,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:33:24,443 INFO L87 Difference]: Start difference. First operand 20142 states and 28806 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:25,236 INFO L93 Difference]: Finished difference Result 33577 states and 48017 transitions. [2021-11-06 15:33:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:33:25,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-06 15:33:25,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:25,295 INFO L225 Difference]: With dead ends: 33577 [2021-11-06 15:33:25,295 INFO L226 Difference]: Without dead ends: 20144 [2021-11-06 15:33:25,323 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:33:25,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20144 states. [2021-11-06 15:33:26,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20144 to 20142. [2021-11-06 15:33:26,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20142 states, 20139 states have (on average 1.4302596951189235) internal successors, (28804), 20141 states have internal predecessors, (28804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20142 states to 20142 states and 28804 transitions. [2021-11-06 15:33:26,068 INFO L78 Accepts]: Start accepts. Automaton has 20142 states and 28804 transitions. Word has length 140 [2021-11-06 15:33:26,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:26,068 INFO L470 AbstractCegarLoop]: Abstraction has 20142 states and 28804 transitions. [2021-11-06 15:33:26,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:26,068 INFO L276 IsEmpty]: Start isEmpty. Operand 20142 states and 28804 transitions. [2021-11-06 15:33:26,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 15:33:26,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:26,085 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:26,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 15:33:26,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:33:26,312 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:26,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:26,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1067923045, now seen corresponding path program 1 times [2021-11-06 15:33:26,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:26,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366427524] [2021-11-06 15:33:26,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:26,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 15:33:27,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:27,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366427524] [2021-11-06 15:33:27,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366427524] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:33:27,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204820515] [2021-11-06 15:33:27,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:27,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:33:27,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:33:27,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:33:27,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 15:33:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:28,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 5181 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 15:33:28,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:33:31,103 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 15:33:31,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204820515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:33:31,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:33:31,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-06 15:33:31,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929128357] [2021-11-06 15:33:31,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:33:31,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:33:31,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:33:31,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:33:31,108 INFO L87 Difference]: Start difference. First operand 20142 states and 28804 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:31,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:33:31,770 INFO L93 Difference]: Finished difference Result 33577 states and 48013 transitions. [2021-11-06 15:33:31,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:33:31,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-06 15:33:31,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:33:31,821 INFO L225 Difference]: With dead ends: 33577 [2021-11-06 15:33:31,822 INFO L226 Difference]: Without dead ends: 20144 [2021-11-06 15:33:31,846 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:33:31,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20144 states. [2021-11-06 15:33:32,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20144 to 20142. [2021-11-06 15:33:32,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20142 states, 20139 states have (on average 1.430160385322012) internal successors, (28802), 20141 states have internal predecessors, (28802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:32,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20142 states to 20142 states and 28802 transitions. [2021-11-06 15:33:32,538 INFO L78 Accepts]: Start accepts. Automaton has 20142 states and 28802 transitions. Word has length 140 [2021-11-06 15:33:32,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:33:32,538 INFO L470 AbstractCegarLoop]: Abstraction has 20142 states and 28802 transitions. [2021-11-06 15:33:32,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:33:32,539 INFO L276 IsEmpty]: Start isEmpty. Operand 20142 states and 28802 transitions. [2021-11-06 15:33:32,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-06 15:33:32,555 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:33:32,556 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 15:33:32,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 15:33:32,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-06 15:33:32,772 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-06 15:33:32,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:33:32,772 INFO L85 PathProgramCache]: Analyzing trace with hash 650526439, now seen corresponding path program 1 times [2021-11-06 15:33:32,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:33:32,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817750160] [2021-11-06 15:33:32,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:32,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:33:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:33:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 15:33:33,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:33:33,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817750160] [2021-11-06 15:33:33,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817750160] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:33:33,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291405921] [2021-11-06 15:33:33,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:33:33,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:33:33,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:33:33,451 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:33:33,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process Killed by 15