/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:47:23,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:47:23,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:47:23,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:47:23,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:47:23,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:47:23,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:47:23,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:47:23,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:47:23,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:47:23,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:47:23,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:47:23,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:47:23,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:47:23,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:47:23,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:47:23,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:47:23,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:47:23,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:47:23,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:47:23,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:47:23,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:47:23,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:47:23,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:47:23,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:47:23,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:47:23,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:47:23,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:47:23,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:47:23,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:47:23,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:47:23,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:47:23,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:47:23,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:47:23,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:47:23,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:47:23,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:47:23,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:47:23,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:47:23,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:47:23,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:47:23,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:47:23,665 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:47:23,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:47:23,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:47:23,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:47:23,668 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:47:23,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:47:23,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:47:23,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:47:23,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:47:23,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:47:23,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:47:23,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:47:23,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:47:23,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:47:23,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:47:23,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:47:23,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:47:23,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:47:23,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:47:23,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:47:23,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:47:23,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:47:23,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:47:23,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:47:23,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:47:23,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:47:24,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:47:24,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:47:24,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:47:24,142 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:47:24,146 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:47:24,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:47:24,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2c180e78/66a05496a5564fcc90da5783b2405488/FLAG03ecc913f [2020-12-22 13:47:25,167 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:47:25,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:47:25,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2c180e78/66a05496a5564fcc90da5783b2405488/FLAG03ecc913f [2020-12-22 13:47:25,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2c180e78/66a05496a5564fcc90da5783b2405488 [2020-12-22 13:47:25,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:47:25,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:47:25,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:47:25,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:47:25,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:47:25,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:47:25" (1/1) ... [2020-12-22 13:47:25,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c8ca883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:47:25, skipping insertion in model container [2020-12-22 13:47:25,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:47:25" (1/1) ... [2020-12-22 13:47:25,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:47:25,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:47:27,301 WARN L226 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-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i[185985,185998] [2020-12-22 13:47:27,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:47:27,350 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:47:27,608 WARN L226 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-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i[185985,185998] [2020-12-22 13:47:27,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:47:27,933 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:47:27,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:47:27 WrapperNode [2020-12-22 13:47:27,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:47:27,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:47:27,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:47:27,939 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:47:27,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:47:27" (1/1) ... [2020-12-22 13:47:28,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:47:27" (1/1) ... [2020-12-22 13:47:29,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:47:29,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:47:29,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:47:29,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:47:29,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:47:27" (1/1) ... [2020-12-22 13:47:29,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:47:27" (1/1) ... [2020-12-22 13:47:29,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:47:27" (1/1) ... [2020-12-22 13:47:29,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:47:27" (1/1) ... [2020-12-22 13:47:29,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:47:27" (1/1) ... [2020-12-22 13:47:29,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:47:27" (1/1) ... [2020-12-22 13:47:30,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:47:27" (1/1) ... [2020-12-22 13:47:30,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:47:30,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:47:30,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:47:30,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:47:30,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:47:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:47:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:47:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:47:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:47:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:47:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:47:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:47:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:47:30,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:47:30,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:47:30,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:47:30,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:47:30,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:47:30,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:47:30,346 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-12-22 13:47:30,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:47:30,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:48:04,559 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:48:04,559 INFO L299 CfgBuilder]: Removed 3233 assume(true) statements. [2020-12-22 13:48:04,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:48:04 BoogieIcfgContainer [2020-12-22 13:48:04,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:48:04,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:48:04,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:48:04,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:48:04,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:47:25" (1/3) ... [2020-12-22 13:48:04,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2d6ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:48:04, skipping insertion in model container [2020-12-22 13:48:04,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:47:27" (2/3) ... [2020-12-22 13:48:04,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2d6ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:48:04, skipping insertion in model container [2020-12-22 13:48:04,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:48:04" (3/3) ... [2020-12-22 13:48:04,580 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-064368f-1-111_1a-drivers--media--radio--si4713-i2c.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:48:04,587 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:48:04,594 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 13:48:04,614 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 13:48:04,669 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:48:04,669 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:48:04,670 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:48:04,670 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:48:04,670 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:48:04,670 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:48:04,670 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:48:04,670 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:48:04,758 INFO L276 IsEmpty]: Start isEmpty. Operand 4726 states. [2020-12-22 13:48:04,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 13:48:04,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:48:04,783 INFO L422 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] [2020-12-22 13:48:04,784 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:48:04,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:48:04,792 INFO L82 PathProgramCache]: Analyzing trace with hash 7063654, now seen corresponding path program 1 times [2020-12-22 13:48:04,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:48:04,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837209] [2020-12-22 13:48:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:48:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:48:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:48:05,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837209] [2020-12-22 13:48:05,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:48:05,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:48:05,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059478490] [2020-12-22 13:48:05,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 13:48:05,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:48:05,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 13:48:05,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:48:05,447 INFO L87 Difference]: Start difference. First operand 4726 states. Second operand 2 states. [2020-12-22 13:48:05,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:48:05,685 INFO L93 Difference]: Finished difference Result 9448 states and 14263 transitions. [2020-12-22 13:48:05,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 13:48:05,687 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2020-12-22 13:48:05,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:48:05,741 INFO L225 Difference]: With dead ends: 9448 [2020-12-22 13:48:05,742 INFO L226 Difference]: Without dead ends: 4697 [2020-12-22 13:48:05,761 INFO L677 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 [2020-12-22 13:48:05,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4697 states. [2020-12-22 13:48:05,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4697 to 4697. [2020-12-22 13:48:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4697 states. [2020-12-22 13:48:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4697 states to 4697 states and 7061 transitions. [2020-12-22 13:48:06,017 INFO L78 Accepts]: Start accepts. Automaton has 4697 states and 7061 transitions. Word has length 42 [2020-12-22 13:48:06,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:48:06,018 INFO L481 AbstractCegarLoop]: Abstraction has 4697 states and 7061 transitions. [2020-12-22 13:48:06,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 13:48:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 4697 states and 7061 transitions. [2020-12-22 13:48:06,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 13:48:06,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:48:06,023 INFO L422 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] [2020-12-22 13:48:06,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:48:06,024 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:48:06,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:48:06,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1980709140, now seen corresponding path program 1 times [2020-12-22 13:48:06,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:48:06,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539475344] [2020-12-22 13:48:06,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:48:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:48:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:48:06,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539475344] [2020-12-22 13:48:06,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:48:06,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:48:06,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600882102] [2020-12-22 13:48:06,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:48:06,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:48:06,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:48:06,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:48:06,336 INFO L87 Difference]: Start difference. First operand 4697 states and 7061 transitions. Second operand 3 states. [2020-12-22 13:48:06,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:48:06,653 INFO L93 Difference]: Finished difference Result 10102 states and 15157 transitions. [2020-12-22 13:48:06,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:48:06,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 13:48:06,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:48:06,687 INFO L225 Difference]: With dead ends: 10102 [2020-12-22 13:48:06,687 INFO L226 Difference]: Without dead ends: 5423 [2020-12-22 13:48:06,703 INFO L677 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 [2020-12-22 13:48:06,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2020-12-22 13:48:06,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 5405. [2020-12-22 13:48:06,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5405 states. [2020-12-22 13:48:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 8096 transitions. [2020-12-22 13:48:06,867 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 8096 transitions. Word has length 42 [2020-12-22 13:48:06,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:48:06,869 INFO L481 AbstractCegarLoop]: Abstraction has 5405 states and 8096 transitions. [2020-12-22 13:48:06,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:48:06,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 8096 transitions. [2020-12-22 13:48:06,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 13:48:06,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:48:06,877 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:48:06,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:48:06,879 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:48:06,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:48:06,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1637024580, now seen corresponding path program 1 times [2020-12-22 13:48:06,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:48:06,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076586025] [2020-12-22 13:48:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:48:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:48:07,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:48:07,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076586025] [2020-12-22 13:48:07,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:48:07,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 13:48:07,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946298137] [2020-12-22 13:48:07,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:48:07,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:48:07,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:48:07,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:48:07,530 INFO L87 Difference]: Start difference. First operand 5405 states and 8096 transitions. Second operand 7 states. [2020-12-22 13:49:10,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:10,626 INFO L93 Difference]: Finished difference Result 11543 states and 17238 transitions. [2020-12-22 13:49:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:49:10,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-12-22 13:49:10,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:10,665 INFO L225 Difference]: With dead ends: 11543 [2020-12-22 13:49:10,666 INFO L226 Difference]: Without dead ends: 6156 [2020-12-22 13:49:10,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 13:49:10,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6156 states. [2020-12-22 13:49:10,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6156 to 5772. [2020-12-22 13:49:10,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5772 states. [2020-12-22 13:49:10,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5772 states to 5772 states and 8623 transitions. [2020-12-22 13:49:10,879 INFO L78 Accepts]: Start accepts. Automaton has 5772 states and 8623 transitions. Word has length 85 [2020-12-22 13:49:10,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:10,879 INFO L481 AbstractCegarLoop]: Abstraction has 5772 states and 8623 transitions. [2020-12-22 13:49:10,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:49:10,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5772 states and 8623 transitions. [2020-12-22 13:49:10,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 13:49:10,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:10,886 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:49:10,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:49:10,886 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:10,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:10,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1740302319, now seen corresponding path program 1 times [2020-12-22 13:49:10,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:10,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577170417] [2020-12-22 13:49:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:49:11,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577170417] [2020-12-22 13:49:11,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:11,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:11,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487297016] [2020-12-22 13:49:11,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:11,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:11,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:11,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:11,176 INFO L87 Difference]: Start difference. First operand 5772 states and 8623 transitions. Second operand 3 states. [2020-12-22 13:49:11,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:11,457 INFO L93 Difference]: Finished difference Result 11270 states and 16877 transitions. [2020-12-22 13:49:11,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:11,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-22 13:49:11,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:11,537 INFO L225 Difference]: With dead ends: 11270 [2020-12-22 13:49:11,537 INFO L226 Difference]: Without dead ends: 11262 [2020-12-22 13:49:11,542 INFO L677 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 [2020-12-22 13:49:11,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11262 states. [2020-12-22 13:49:11,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11262 to 5764. [2020-12-22 13:49:11,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5764 states. [2020-12-22 13:49:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5764 states to 5764 states and 8613 transitions. [2020-12-22 13:49:11,780 INFO L78 Accepts]: Start accepts. Automaton has 5764 states and 8613 transitions. Word has length 87 [2020-12-22 13:49:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:11,782 INFO L481 AbstractCegarLoop]: Abstraction has 5764 states and 8613 transitions. [2020-12-22 13:49:11,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5764 states and 8613 transitions. [2020-12-22 13:49:11,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 13:49:11,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:11,789 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:49:11,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:49:11,790 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:11,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:11,791 INFO L82 PathProgramCache]: Analyzing trace with hash -963041693, now seen corresponding path program 1 times [2020-12-22 13:49:11,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:11,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029574253] [2020-12-22 13:49:11,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:13,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029574253] [2020-12-22 13:49:13,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300292729] [2020-12-22 13:49:13,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:49:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:14,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 13:49:14,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:49:14,857 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 13:49:14,952 INFO L348 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-12-22 13:49:14,952 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2020-12-22 13:49:14,957 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 13:49:14,994 INFO L348 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-12-22 13:49:14,995 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2020-12-22 13:49:14,997 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 13:49:15,035 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 13:49:15,043 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 2 xjuncts. [2020-12-22 13:49:15,043 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:51, output treesize:43 [2020-12-22 13:49:15,339 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 13:49:15,346 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 13:49:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 13:49:15,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:49:15,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2020-12-22 13:49:15,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967538940] [2020-12-22 13:49:15,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:49:15,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:15,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:49:15,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-12-22 13:49:15,425 INFO L87 Difference]: Start difference. First operand 5764 states and 8613 transitions. Second operand 5 states.