/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:59:06,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:59:06,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:59:06,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:59:06,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:59:06,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:59:06,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:59:06,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:59:06,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:59:06,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:59:06,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:59:06,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:59:06,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:59:06,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:59:06,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:59:06,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:59:06,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:59:06,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:59:06,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:59:06,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:59:06,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:59:06,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:59:06,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:59:06,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:59:06,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:59:06,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:59:06,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:59:06,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:59:06,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:59:06,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:59:06,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:59:06,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:59:06,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:59:06,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:59:06,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:59:06,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:59:06,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:59:06,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:59:06,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:59:06,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:59:06,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:59:06,344 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:59:06,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:59:06,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:59:06,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:59:06,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:59:06,394 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:59:06,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:59:06,394 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:59:06,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:59:06,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:59:06,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:59:06,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:59:06,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:59:06,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:59:06,395 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:59:06,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:59:06,396 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:59:06,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:59:06,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:59:06,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:59:06,397 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:59:06,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:59:06,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:59:06,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:59:06,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:59:06,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:59:06,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:59:06,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:59:06,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:59:06,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:59:06,398 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:59:06,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:59:06,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:59:06,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:59:06,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:59:06,820 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:59:06,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-10-28 14:59:06,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8512348d9/a8c647d0a5644d618b35a7555317cfdd/FLAGc16a168c1 [2020-10-28 14:59:07,517 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:59:07,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-10-28 14:59:07,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8512348d9/a8c647d0a5644d618b35a7555317cfdd/FLAGc16a168c1 [2020-10-28 14:59:07,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8512348d9/a8c647d0a5644d618b35a7555317cfdd [2020-10-28 14:59:07,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:59:07,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:59:07,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:59:07,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:59:07,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:59:07,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:59:07" (1/1) ... [2020-10-28 14:59:07,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f64488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:59:07, skipping insertion in model container [2020-10-28 14:59:07,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:59:07" (1/1) ... [2020-10-28 14:59:07,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:59:07,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:59:08,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:59:08,227 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:59:08,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:59:08,380 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:59:08,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:59:08 WrapperNode [2020-10-28 14:59:08,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:59:08,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:59:08,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:59:08,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:59:08,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:59:08" (1/1) ... [2020-10-28 14:59:08,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:59:08" (1/1) ... [2020-10-28 14:59:08,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:59:08" (1/1) ... [2020-10-28 14:59:08,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:59:08" (1/1) ... [2020-10-28 14:59:08,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:59:08" (1/1) ... [2020-10-28 14:59:08,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:59:08" (1/1) ... [2020-10-28 14:59:08,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:59:08" (1/1) ... [2020-10-28 14:59:08,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:59:08,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:59:08,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:59:08,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:59:08,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:59:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-28 14:59:08,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:59:08,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:59:08,544 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:59:08,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:59:08,545 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:59:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:59:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:59:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:59:08,546 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-10-28 14:59:08,547 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-28 14:59:08,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:59:08,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 14:59:08,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:59:08,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:59:08,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:59:08,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:59:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:59:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:59:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:59:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:59:11,607 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:59:11,607 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 14:59:11,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:59:11 BoogieIcfgContainer [2020-10-28 14:59:11,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:59:11,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:59:11,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:59:11,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:59:11,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:59:07" (1/3) ... [2020-10-28 14:59:11,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afc9f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:59:11, skipping insertion in model container [2020-10-28 14:59:11,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:59:08" (2/3) ... [2020-10-28 14:59:11,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afc9f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:59:11, skipping insertion in model container [2020-10-28 14:59:11,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:59:11" (3/3) ... [2020-10-28 14:59:11,619 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2020-10-28 14:59:11,632 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:59:11,638 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:59:11,651 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:59:11,679 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:59:11,679 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:59:11,679 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:59:11,679 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:59:11,680 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:59:11,680 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:59:11,680 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:59:11,680 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:59:11,697 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-28 14:59:11,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 14:59:11,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:59:11,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:59:11,704 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:59:11,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:59:11,710 INFO L82 PathProgramCache]: Analyzing trace with hash 725686189, now seen corresponding path program 1 times [2020-10-28 14:59:11,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:59:11,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844213074] [2020-10-28 14:59:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:59:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:59:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:59:12,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:59:12,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:59:12,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:59:12,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-28 14:59:12,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:59:12,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:59:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:59:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:59:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:59:12,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:59:12,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:59:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:59:12,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:59:12,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:59:12,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:59:12,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:59:12,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 14:59:12,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:59:12,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:59:12,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:59:12,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:59:12,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:59:12,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:59:12,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:59:12,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844213074] [2020-10-28 14:59:12,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:59:12,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:59:12,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441046266] [2020-10-28 14:59:12,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:59:12,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:59:12,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:59:12,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:59:12,891 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2020-10-28 14:59:15,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:59:15,131 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2020-10-28 14:59:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:59:15,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-28 14:59:15,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:59:15,141 INFO L225 Difference]: With dead ends: 43 [2020-10-28 14:59:15,141 INFO L226 Difference]: Without dead ends: 22 [2020-10-28 14:59:15,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:59:15,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-28 14:59:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-10-28 14:59:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-28 14:59:15,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-28 14:59:15,204 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2020-10-28 14:59:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:59:15,205 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-28 14:59:15,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:59:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-28 14:59:15,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 14:59:15,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:59:15,207 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:59:15,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:59:15,207 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:59:15,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:59:15,208 INFO L82 PathProgramCache]: Analyzing trace with hash 926635520, now seen corresponding path program 1 times [2020-10-28 14:59:15,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:59:15,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927188024] [2020-10-28 14:59:15,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:59:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:59:15,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:59:15,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:59:15,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 14:59:15,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:59:15,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-10-28 14:59:15,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:59:15,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:59:15,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:59:15,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:59:15,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:59:15,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:59:15,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:59:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:59:15,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:59:15,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:59:15,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:59:15,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:59:15,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:59:15,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:59:15,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:59:15,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:59:15,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:59:15,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:59:15,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:59:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:59:16,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927188024] [2020-10-28 14:59:16,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:59:16,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 14:59:16,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198260933] [2020-10-28 14:59:16,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:59:16,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:59:16,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:59:16,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:59:16,006 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2020-10-28 14:59:20,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:59:20,284 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-10-28 14:59:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:59:20,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-28 14:59:20,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:59:20,287 INFO L225 Difference]: With dead ends: 31 [2020-10-28 14:59:20,287 INFO L226 Difference]: Without dead ends: 27 [2020-10-28 14:59:20,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:59:20,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-28 14:59:20,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-10-28 14:59:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-28 14:59:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-10-28 14:59:20,301 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 18 [2020-10-28 14:59:20,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:59:20,302 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-10-28 14:59:20,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:59:20,302 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-10-28 14:59:20,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:59:20,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:59:20,303 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:59:20,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:59:20,304 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:59:20,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:59:20,309 INFO L82 PathProgramCache]: Analyzing trace with hash -241560691, now seen corresponding path program 2 times [2020-10-28 14:59:20,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:59:20,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826011832] [2020-10-28 14:59:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:59:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:59:20,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:59:20,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:59:22,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:59:22,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:59:22,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:59:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1727 [2020-10-28 14:59:22,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:59:22,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:59:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:59:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:59:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:59:22,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:59:22,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:59:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:59:22,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:59:22,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:59:22,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:59:22,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:59:22,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:59:22,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:59:22,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:59:22,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:59:22,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:59:22,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:59:22,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:59:22,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 14:59:22,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826011832] [2020-10-28 14:59:22,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:59:22,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:59:22,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896538393] [2020-10-28 14:59:22,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:59:22,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:59:22,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:59:22,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:59:22,325 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 9 states. [2020-10-28 14:59:30,678 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 33 [2020-10-28 14:59:30,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:59:30,914 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-28 14:59:30,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:59:30,917 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-28 14:59:30,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:59:30,918 INFO L225 Difference]: With dead ends: 24 [2020-10-28 14:59:30,918 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 14:59:30,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:59:30,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 14:59:30,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 14:59:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 14:59:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 14:59:30,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-10-28 14:59:30,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:59:30,920 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 14:59:30,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:59:30,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 14:59:30,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 14:59:30,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:59:30,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 14:59:31,302 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-10-28 14:59:31,305 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-28 14:59:31,306 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-28 14:59:31,306 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-28 14:59:31,306 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-28 14:59:31,306 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:59:31,307 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string8.offset| |old(#t~string8.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= |old(#valid)| |#valid|) (= |#t~string51.base| |old(#t~string51.base)|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |#t~string51.offset| |old(#t~string51.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#t~string8.base| |old(#t~string8.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#t~string7.base| |old(#t~string7.base)|)) [2020-10-28 14:59:31,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:59:31,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:59:31,307 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~Id_MCDC_93~0 0) (<= 0 ~Id_MCDC_93~0)) [2020-10-28 14:59:31,307 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 14:59:31,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:59:31,308 INFO L274 CegarLoopResult]: For program point L161(lines 161 236) no Hoare annotation was computed. [2020-10-28 14:59:31,308 INFO L274 CegarLoopResult]: For program point L190(lines 190 208) no Hoare annotation was computed. [2020-10-28 14:59:31,308 INFO L270 CegarLoopResult]: At program point L221(line 221) the Hoare annotation is: (or (not (<= |old(~Id_MCDC_93~0)| 0)) (not (< 0 (+ (div |old(~Id_MCDC_93~0)| 4294967296) 1)))) [2020-10-28 14:59:31,308 INFO L274 CegarLoopResult]: For program point L221-1(line 221) no Hoare annotation was computed. [2020-10-28 14:59:31,308 INFO L274 CegarLoopResult]: For program point L219(lines 219 227) no Hoare annotation was computed. [2020-10-28 14:59:31,308 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 133 237) no Hoare annotation was computed. [2020-10-28 14:59:31,309 INFO L274 CegarLoopResult]: For program point L182(lines 182 229) no Hoare annotation was computed. [2020-10-28 14:59:31,309 INFO L274 CegarLoopResult]: For program point L180(lines 180 234) no Hoare annotation was computed. [2020-10-28 14:59:31,309 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 133 237) no Hoare annotation was computed. [2020-10-28 14:59:31,309 INFO L274 CegarLoopResult]: For program point L197(lines 197 207) no Hoare annotation was computed. [2020-10-28 14:59:31,309 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 133 237) the Hoare annotation is: (or (not (<= |old(~Id_MCDC_93~0)| 0)) (and (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) (not (< 0 (+ (div |old(~Id_MCDC_93~0)| 4294967296) 1)))) [2020-10-28 14:59:31,310 INFO L270 CegarLoopResult]: At program point L202(lines 167 235) the Hoare annotation is: (let ((.cse0 (<= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0)) (.cse1 (<= 0 |main_~#Id_MCDC_89__Id_MCDC_95~0.offset|)) (.cse2 (= (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492)) 0))) (or (not (<= |old(~Id_MCDC_93~0)| 0)) (and (<= ~Id_MCDC_93~0 0) .cse0 .cse1 (<= main_~Id_MCDC_89__Id_MCDC_96~0 0) (<= 0 ~Id_MCDC_93~0) (<= 0 main_~Id_MCDC_89__Id_MCDC_96~0) .cse2) (and .cse0 .cse1 (<= ~Id_MCDC_93~0 (+ (* 4294967296 (div ~Id_MCDC_93~0 4294967296)) 41)) (<= main_~Id_MCDC_89__Id_MCDC_96~0 (+ (* 4294967296 (div (+ main_~Id_MCDC_89__Id_MCDC_96~0 (- 1)) 4294967296)) 41)) .cse2) (not (< 0 (+ (div |old(~Id_MCDC_93~0)| 4294967296) 1))))) [2020-10-28 14:59:31,322 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:59:31,326 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:59:31,335 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:59:31,336 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:59:31,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:59:31 BoogieIcfgContainer [2020-10-28 14:59:31,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:59:31,343 INFO L168 Benchmark]: Toolchain (without parser) took 23491.94 ms. Allocated memory was 156.2 MB in the beginning and 200.3 MB in the end (delta: 44.0 MB). Free memory was 131.0 MB in the beginning and 108.8 MB in the end (delta: 22.2 MB). Peak memory consumption was 67.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:59:31,343 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 156.2 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:59:31,345 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.18 ms. Allocated memory is still 156.2 MB. Free memory was 130.3 MB in the beginning and 115.0 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:59:31,346 INFO L168 Benchmark]: Boogie Preprocessor took 77.52 ms. Allocated memory is still 156.2 MB. Free memory was 115.0 MB in the beginning and 111.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:59:31,349 INFO L168 Benchmark]: RCFGBuilder took 3149.68 ms. Allocated memory is still 156.2 MB. Free memory was 111.4 MB in the beginning and 93.1 MB in the end (delta: 18.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 8.0 GB. [2020-10-28 14:59:31,350 INFO L168 Benchmark]: TraceAbstraction took 19727.96 ms. Allocated memory was 156.2 MB in the beginning and 200.3 MB in the end (delta: 44.0 MB). Free memory was 92.6 MB in the beginning and 108.8 MB in the end (delta: -16.2 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. [2020-10-28 14:59:31,368 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 156.2 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 524.18 ms. Allocated memory is still 156.2 MB. Free memory was 130.3 MB in the beginning and 115.0 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.52 ms. Allocated memory is still 156.2 MB. Free memory was 115.0 MB in the beginning and 111.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 3149.68 ms. Allocated memory is still 156.2 MB. Free memory was 111.4 MB in the beginning and 93.1 MB in the end (delta: 18.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 19727.96 ms. Allocated memory was 156.2 MB in the beginning and 200.3 MB in the end (delta: 44.0 MB). Free memory was 92.6 MB in the beginning and 108.8 MB in the end (delta: -16.2 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 167]: Loop Invariant [2020-10-28 14:59:31,386 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:59:31,386 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:59:31,390 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:59:31,391 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((!(\old(Id_MCDC_93) <= 0) || ((((((Id_MCDC_93 <= 0 && Id_MCDC_89__Id_MCDC_95 <= 0) && 0 <= Id_MCDC_89__Id_MCDC_95) && Id_MCDC_89__Id_MCDC_96 <= 0) && 0 <= Id_MCDC_93) && 0 <= Id_MCDC_89__Id_MCDC_96) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0)) || ((((Id_MCDC_89__Id_MCDC_95 <= 0 && 0 <= Id_MCDC_89__Id_MCDC_95) && Id_MCDC_93 <= 4294967296 * (Id_MCDC_93 / 4294967296) + 41) && Id_MCDC_89__Id_MCDC_96 <= 4294967296 * ((Id_MCDC_89__Id_MCDC_96 + -1) / 4294967296) + 41) && unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492] == 0)) || !(0 < \old(Id_MCDC_93) / 4294967296 + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.2s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 15.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 46 SDslu, 71 SDs, 0 SdLazy, 119 SolverSat, 24 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 12.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 177 HoareAnnotationTreeSize, 9 FomulaSimplifications, 52 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 166 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 9437 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...