/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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-acceleration/underapprox_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:37:44,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:37:44,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:37:44,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:37:44,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:37:44,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:37:44,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:37:44,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:37:44,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:37:44,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:37:44,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:37:44,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:37:44,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:37:44,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:37:44,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:37:44,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:37:44,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:37:44,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:37:44,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:37:44,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:37:44,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:37:44,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:37:44,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:37:44,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:37:44,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:37:44,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:37:44,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:37:44,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:37:44,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:37:44,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:37:44,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:37:44,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:37:44,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:37:44,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:37:44,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:37:44,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:37:44,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:37:44,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:37:44,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:37:44,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:37:44,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:37:44,764 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 [2020-10-29 09:37:44,791 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:37:44,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:37:44,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:37:44,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:37:44,793 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:37:44,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:37:44,794 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:37:44,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:37:44,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:37:44,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:37:44,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:37:44,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:37:44,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:37:44,795 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:37:44,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:37:44,795 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:37:44,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:37:44,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:37:44,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:37:44,796 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:37:44,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:37:44,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:37:44,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:37:44,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:37:44,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:37:44,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:37:44,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:37:44,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:37:44,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:37:44,798 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:37:45,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:37:45,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:37:45,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:37:45,206 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:37:45,207 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:37:45,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_1-2.c [2020-10-29 09:37:45,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f42ace46a/8ae97563b60e46b3b7b538b94cc5ce02/FLAGebf693393 [2020-10-29 09:37:45,855 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:37:45,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/underapprox_1-2.c [2020-10-29 09:37:45,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f42ace46a/8ae97563b60e46b3b7b538b94cc5ce02/FLAGebf693393 [2020-10-29 09:37:46,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f42ace46a/8ae97563b60e46b3b7b538b94cc5ce02 [2020-10-29 09:37:46,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:37:46,247 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:37:46,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:37:46,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:37:46,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:37:46,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:37:46" (1/1) ... [2020-10-29 09:37:46,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126272a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:37:46, skipping insertion in model container [2020-10-29 09:37:46,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:37:46" (1/1) ... [2020-10-29 09:37:46,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:37:46,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:37:46,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:37:46,508 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:37:46,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:37:46,554 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:37:46,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:37:46 WrapperNode [2020-10-29 09:37:46,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:37:46,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:37:46,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:37:46,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:37:46,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:37:46" (1/1) ... [2020-10-29 09:37:46,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:37:46" (1/1) ... [2020-10-29 09:37:46,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:37:46" (1/1) ... [2020-10-29 09:37:46,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:37:46" (1/1) ... [2020-10-29 09:37:46,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:37:46" (1/1) ... [2020-10-29 09:37:46,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:37:46" (1/1) ... [2020-10-29 09:37:46,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:37:46" (1/1) ... [2020-10-29 09:37:46,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:37:46,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:37:46,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:37:46,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:37:46,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:37:46" (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 [2020-10-29 09:37:46,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:37:46,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:37:46,693 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:37:46,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:37:46,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:37:46,693 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:37:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:37:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:37:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:37:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:37:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:37:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:37:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:37:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:37:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:37:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:37:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:37:46,970 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:37:46,970 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:37:46,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:37:46 BoogieIcfgContainer [2020-10-29 09:37:46,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:37:46,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:37:46,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:37:46,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:37:46,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:37:46" (1/3) ... [2020-10-29 09:37:46,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d72a757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:37:46, skipping insertion in model container [2020-10-29 09:37:46,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:37:46" (2/3) ... [2020-10-29 09:37:46,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d72a757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:37:46, skipping insertion in model container [2020-10-29 09:37:46,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:37:46" (3/3) ... [2020-10-29 09:37:46,982 INFO L111 eAbstractionObserver]: Analyzing ICFG underapprox_1-2.c [2020-10-29 09:37:46,996 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:37:47,002 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:37:47,039 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:37:47,096 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:37:47,096 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:37:47,096 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:37:47,096 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:37:47,096 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:37:47,097 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:37:47,097 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:37:47,097 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:37:47,115 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-29 09:37:47,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 09:37:47,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:37:47,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:37:47,123 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:37:47,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:37:47,130 INFO L82 PathProgramCache]: Analyzing trace with hash 783588435, now seen corresponding path program 1 times [2020-10-29 09:37:47,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:37:47,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080723476] [2020-10-29 09:37:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:37:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:37:47,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:37:47,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:37:47,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:37:47,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:37:47,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:37:47,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-29 09:37:47,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:37:47,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:37:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:37:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:37:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:37:47,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:37:48,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:37:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:37:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:37:48,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:37:48,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:37:48,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:37:48,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:37:48,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:37:48,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:37:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:37:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:37:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:37:48,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:37:48,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:37:48,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080723476] [2020-10-29 09:37:48,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:37:48,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:37:48,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598206912] [2020-10-29 09:37:48,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:37:48,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:37:48,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:37:48,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:37:48,073 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 6 states. [2020-10-29 09:37:48,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:37:48,475 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2020-10-29 09:37:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:37:48,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-29 09:37:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:37:48,486 INFO L225 Difference]: With dead ends: 42 [2020-10-29 09:37:48,486 INFO L226 Difference]: Without dead ends: 14 [2020-10-29 09:37:48,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:37:48,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-29 09:37:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-29 09:37:48,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-29 09:37:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-29 09:37:48,534 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-10-29 09:37:48,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:37:48,535 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-29 09:37:48,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:37:48,535 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-29 09:37:48,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-29 09:37:48,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:37:48,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:37:48,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:37:48,537 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:37:48,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:37:48,538 INFO L82 PathProgramCache]: Analyzing trace with hash 396678398, now seen corresponding path program 1 times [2020-10-29 09:37:48,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:37:48,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551455009] [2020-10-29 09:37:48,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:37:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:37:48,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:37:48,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:37:48,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:37:48,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:37:48,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:37:48,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-29 09:37:48,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:37:48,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:37:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:37:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:37:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:37:48,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:37:49,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:37:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:37:49,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:37:49,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:37:49,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:37:49,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:37:49,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:37:49,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:37:49,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:37:49,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:37:49,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:37:49,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:37:49,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:37:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:37:49,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551455009] [2020-10-29 09:37:49,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:37:49,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:37:49,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781528561] [2020-10-29 09:37:49,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:37:49,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:37:49,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:37:49,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:37:49,074 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2020-10-29 09:37:49,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:37:49,348 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-10-29 09:37:49,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:37:49,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-29 09:37:49,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:37:49,350 INFO L225 Difference]: With dead ends: 21 [2020-10-29 09:37:49,350 INFO L226 Difference]: Without dead ends: 15 [2020-10-29 09:37:49,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:37:49,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-29 09:37:49,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-29 09:37:49,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-29 09:37:49,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-29 09:37:49,358 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-10-29 09:37:49,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:37:49,358 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-29 09:37:49,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:37:49,358 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-29 09:37:49,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-29 09:37:49,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:37:49,359 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:37:49,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:37:49,360 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:37:49,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:37:49,360 INFO L82 PathProgramCache]: Analyzing trace with hash 542416567, now seen corresponding path program 2 times [2020-10-29 09:37:49,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:37:49,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025969528] [2020-10-29 09:37:49,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:37:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:37:49,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:37:49,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:37:49,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:37:49,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 09:37:49,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:37:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-29 09:37:49,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:37:49,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:37:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:37:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:37:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:37:49,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:37:49,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:37:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:37:49,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:37:49,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:37:49,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:37:49,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:37:49,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:37:49,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:37:49,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:37:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:37:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:37:49,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:37:49,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:37:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:37:49,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025969528] [2020-10-29 09:37:49,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:37:49,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:37:49,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023693679] [2020-10-29 09:37:49,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:37:49,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:37:49,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:37:49,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:37:49,937 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2020-10-29 09:37:50,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:37:50,253 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-29 09:37:50,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:37:50,254 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-29 09:37:50,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:37:50,255 INFO L225 Difference]: With dead ends: 22 [2020-10-29 09:37:50,255 INFO L226 Difference]: Without dead ends: 16 [2020-10-29 09:37:50,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:37:50,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-29 09:37:50,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-29 09:37:50,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-29 09:37:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-29 09:37:50,262 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-10-29 09:37:50,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:37:50,263 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-29 09:37:50,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:37:50,263 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-29 09:37:50,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 09:37:50,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:37:50,264 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:37:50,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:37:50,264 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:37:50,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:37:50,265 INFO L82 PathProgramCache]: Analyzing trace with hash 765332510, now seen corresponding path program 3 times [2020-10-29 09:37:50,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:37:50,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784204628] [2020-10-29 09:37:50,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:37:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:37:50,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:37:50,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:37:50,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:37:50,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:37:50,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:37:50,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 09:37:50,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:37:50,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:37:50,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:37:50,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:37:50,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:37:50,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:37:52,673 WARN L838 $PredicateComparison]: unable to prove that (<= (+ (* 2863311531 c_main_~y~0) 2863311528) (* 4294967296 (div (+ (* c_main_~y~0 2863311531) 2863311528) 4294967296))) is different from false [2020-10-29 09:37:52,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:37:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:37:52,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:37:52,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:37:52,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:37:52,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:37:52,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:37:52,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:37:52,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:37:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:37:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:37:52,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:37:52,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:37:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2020-10-29 09:37:52,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784204628] [2020-10-29 09:37:52,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:37:52,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:37:52,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732086986] [2020-10-29 09:37:52,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:37:52,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:37:52,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:37:52,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=44, Unknown=1, NotChecked=12, Total=72 [2020-10-29 09:37:52,819 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2020-10-29 09:37:57,153 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_#t~string5.base| |c_old(#t~string5.base)|) (= |c_#t~string5.offset| |c_old(#t~string5.offset)|) (= |c_old(#length)| |c_#length|) (= |c_#t~string6.base| |c_old(#t~string6.base)|) (= |c_#t~string6.offset| |c_old(#t~string6.offset)|) (= |c_#t~string4.base| |c_old(#t~string4.base)|) (= |c_#NULL.base| |c_old(#NULL.base)|) (<= (+ (* 2863311531 c_main_~y~0) 2863311528) (* 4294967296 (div (+ (* c_main_~y~0 2863311531) 2863311528) 4294967296))) (= |c_#t~string4.offset| |c_old(#t~string4.offset)|) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (= |c_old(#valid)| |c_#valid|)) is different from false [2020-10-29 09:37:57,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:37:57,290 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-10-29 09:37:57,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:37:57,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-29 09:37:57,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:37:57,292 INFO L225 Difference]: With dead ends: 24 [2020-10-29 09:37:57,292 INFO L226 Difference]: Without dead ends: 18 [2020-10-29 09:37:57,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=34, Invalid=104, Unknown=2, NotChecked=42, Total=182 [2020-10-29 09:37:57,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-29 09:37:57,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-29 09:37:57,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-29 09:37:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-29 09:37:57,304 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-10-29 09:37:57,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:37:57,305 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-29 09:37:57,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:37:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-29 09:37:57,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 09:37:57,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:37:57,307 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:37:57,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:37:57,308 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:37:57,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:37:57,309 INFO L82 PathProgramCache]: Analyzing trace with hash -914207849, now seen corresponding path program 4 times [2020-10-29 09:37:57,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:37:57,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219111791] [2020-10-29 09:37:57,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:37:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:37:57,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:37:57,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:37:57,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:37:57,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 09:37:57,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:37:57,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-29 09:37:57,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:37:57,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:37:57,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:37:57,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:37:57,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:37:57,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:38:00,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:38:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:38:00,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:38:00,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:38:00,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:38:00,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:38:00,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:38:00,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:38:00,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:38:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:38:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:38:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:38:00,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:38:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:38:00,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219111791] [2020-10-29 09:38:00,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:38:00,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:38:00,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110108744] [2020-10-29 09:38:00,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:38:00,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:38:00,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:38:00,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=71, Unknown=1, NotChecked=0, Total=90 [2020-10-29 09:38:00,047 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 10 states. [2020-10-29 09:38:02,188 WARN L838 $PredicateComparison]: unable to prove that (and (<= (let ((.cse2 (div c_main_~y~0 4294967296))) (let ((.cse1 (* .cse2 (- 4294967296)))) (let ((.cse0 (div (+ c_main_~y~0 .cse1) 3))) (+ (* 6148914689804861440 (div (+ c_main_~y~0 (* .cse0 (- 3)) .cse1) 4294967296)) (* 4294967296 .cse0) (* 6148914689804861440 .cse2) 1431655760)))) (* 1431655765 c_main_~y~0)) (= |c_#t~string5.base| |c_old(#t~string5.base)|) (= |c_#t~string5.offset| |c_old(#t~string5.offset)|) (= |c_old(#length)| |c_#length|) (= |c_#t~string6.base| |c_old(#t~string6.base)|) (= |c_#t~string6.offset| |c_old(#t~string6.offset)|) (<= (* 536870912 (div (+ (* c_main_~y~0 178956971) 715827881) 536870912)) (+ (* 178956971 c_main_~y~0) 178956970)) (= |c_#t~string4.base| |c_old(#t~string4.base)|) (= |c_#NULL.base| |c_old(#NULL.base)|) (= |c_#t~string4.offset| |c_old(#t~string4.offset)|) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (= |c_old(#valid)| |c_#valid|)) is different from false [2020-10-29 09:38:06,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:38:06,800 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-29 09:38:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:38:06,801 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-10-29 09:38:06,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:38:06,802 INFO L225 Difference]: With dead ends: 24 [2020-10-29 09:38:06,802 INFO L226 Difference]: Without dead ends: 18 [2020-10-29 09:38:06,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=44, Invalid=168, Unknown=2, NotChecked=26, Total=240 [2020-10-29 09:38:06,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-29 09:38:06,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-29 09:38:06,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-29 09:38:06,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-29 09:38:06,818 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2020-10-29 09:38:06,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:38:06,819 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-29 09:38:06,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:38:06,819 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-29 09:38:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 09:38:06,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:38:06,820 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:38:06,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:38:06,822 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:38:06,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:38:06,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1440351426, now seen corresponding path program 5 times [2020-10-29 09:38:06,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:38:06,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130588639] [2020-10-29 09:38:06,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:38:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:38:06,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:38:06,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:38:07,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:38:07,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 09:38:07,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:38:07,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-29 09:38:07,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:38:07,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:38:07,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:38:07,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:38:07,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 09:38:07,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:38:09,340 WARN L838 $PredicateComparison]: unable to prove that (<= 0 (+ (* 2147483648 (div (+ (* c_main_~y~0 (- 1431655765)) (- 715827888)) 2147483648)) (* 1431655765 c_main_~y~0) 715827888)) is different from false [2020-10-29 09:38:09,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:38:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:38:09,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:38:09,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:38:09,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:38:09,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:38:09,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:38:09,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:38:09,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:38:09,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:38:09,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:38:09,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:38:09,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:38:09,501 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2020-10-29 09:38:09,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130588639] [2020-10-29 09:38:09,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:38:09,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:38:09,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009284152] [2020-10-29 09:38:09,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:38:09,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:38:09,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:38:09,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=73, Unknown=1, NotChecked=16, Total=110 [2020-10-29 09:38:09,504 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 11 states. [2020-10-29 09:38:17,436 WARN L193 SmtUtils]: Spent 5.18 s on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 09:38:21,107 WARN L838 $PredicateComparison]: unable to prove that (and (<= 0 (+ (* 2147483648 (div (+ (* c_main_~y~0 (- 1431655765)) (- 715827888)) 2147483648)) (* 1431655765 c_main_~y~0) 715827888)) (= |c_#t~string5.base| |c_old(#t~string5.base)|) (= |c_#t~string5.offset| |c_old(#t~string5.offset)|) (= |c_old(#length)| |c_#length|) (= |c_#t~string6.base| |c_old(#t~string6.base)|) (= |c_#t~string6.offset| |c_old(#t~string6.offset)|) (= |c_#t~string4.base| |c_old(#t~string4.base)|) (= |c_#NULL.base| |c_old(#NULL.base)|) (= |c_#t~string4.offset| |c_old(#t~string4.offset)|) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (= |c_old(#valid)| |c_#valid|)) is different from false [2020-10-29 09:38:21,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:38:21,358 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-10-29 09:38:21,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:38:21,359 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-10-29 09:38:21,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:38:21,360 INFO L225 Difference]: With dead ends: 25 [2020-10-29 09:38:21,361 INFO L226 Difference]: Without dead ends: 19 [2020-10-29 09:38:21,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=56, Invalid=221, Unknown=3, NotChecked=62, Total=342 [2020-10-29 09:38:21,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-29 09:38:21,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-29 09:38:21,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-29 09:38:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-29 09:38:21,376 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2020-10-29 09:38:21,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:38:21,376 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-29 09:38:21,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:38:21,376 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-29 09:38:21,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 09:38:21,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:38:21,377 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:38:21,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:38:21,377 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:38:21,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:38:21,378 INFO L82 PathProgramCache]: Analyzing trace with hash -570933129, now seen corresponding path program 6 times [2020-10-29 09:38:21,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:38:21,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225944805] [2020-10-29 09:38:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:38:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:38:21,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:38:21,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:38:21,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 09:38:21,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:38:21,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-29 09:38:21,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:38:21,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:38:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:38:21,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:38:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 09:38:21,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:38:21,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:38:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:38:21,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:38:21,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:38:21,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:38:21,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:38:21,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:38:21,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:38:21,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:38:21,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:38:21,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:38:21,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:38:21,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:38:21,943 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:38:21,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225944805] [2020-10-29 09:38:21,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:38:21,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:38:21,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552555315] [2020-10-29 09:38:21,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:38:21,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:38:21,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:38:21,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:38:21,948 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 12 states. [2020-10-29 09:38:22,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:38:22,617 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-10-29 09:38:22,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:38:22,618 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-10-29 09:38:22,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:38:22,618 INFO L225 Difference]: With dead ends: 26 [2020-10-29 09:38:22,618 INFO L226 Difference]: Without dead ends: 20 [2020-10-29 09:38:22,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:38:22,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-29 09:38:22,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-29 09:38:22,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-29 09:38:22,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-10-29 09:38:22,633 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2020-10-29 09:38:22,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:38:22,635 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-10-29 09:38:22,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:38:22,635 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-10-29 09:38:22,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 09:38:22,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:38:22,636 INFO L422 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:38:22,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:38:22,637 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:38:22,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:38:22,637 INFO L82 PathProgramCache]: Analyzing trace with hash 611230302, now seen corresponding path program 7 times [2020-10-29 09:38:22,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:38:22,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322056912] [2020-10-29 09:38:22,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:38:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:38:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:38:22,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:38:22,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 09:38:22,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:38:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 09:38:22,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:38:22,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:38:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:38:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:38:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:38:22,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:38:23,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:38:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:38:23,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:38:23,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:38:23,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:38:23,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:38:23,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:38:23,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:38:23,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:38:23,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:38:23,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:38:23,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:38:23,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:38:23,025 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:38:23,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322056912] [2020-10-29 09:38:23,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:38:23,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:38:23,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531301831] [2020-10-29 09:38:23,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:38:23,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:38:23,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:38:23,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:38:23,028 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 9 states. [2020-10-29 09:38:25,565 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-29 09:38:25,709 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2020-10-29 09:38:25,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:38:25,713 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-29 09:38:25,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:38:25,714 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-29 09:38:25,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:38:25,714 INFO L225 Difference]: With dead ends: 20 [2020-10-29 09:38:25,714 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:38:25,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:38:25,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:38:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:38:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:38:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:38:25,716 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-29 09:38:25,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:38:25,716 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:38:25,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:38:25,716 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:38:25,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:38:25,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:38:25,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:38:26,060 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 23 [2020-10-29 09:38:32,200 WARN L193 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 243 DAG size of output: 106 [2020-10-29 09:38:32,204 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-29 09:38:32,204 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-29 09:38:32,205 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-29 09:38:32,205 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-29 09:38:32,205 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:38:32,205 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#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~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-29 09:38:32,205 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:38:32,205 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:38:32,206 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 09:38:32,206 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:38:32,206 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:38:32,206 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 12 22) the Hoare annotation is: true [2020-10-29 09:38:32,206 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 12 22) no Hoare annotation was computed. [2020-10-29 09:38:32,207 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 19) the Hoare annotation is: (let ((.cse5 (+ main_~y~0 1)) (.cse4 (* 4294967296 (div main_~x~0 4294967296))) (.cse0 (<= main_~x~0 (+ (* 4294967296 (div (+ main_~x~0 (- 2)) 4294967296)) 6)))) (or (and (<= 1 main_~y~0) (<= main_~y~0 1)) (let ((.cse3 (div main_~y~0 4294967296))) (and .cse0 (<= (let ((.cse2 (* .cse3 (- 4294967296)))) (let ((.cse1 (div (+ main_~y~0 .cse2) 3))) (+ (* 4294967295 (div (+ main_~y~0 (* .cse1 (- 3)) .cse2) 4294967296)) (* 3 .cse1) (* 4294967295 .cse3) 1))) main_~y~0) (<= .cse3 0) (<= (+ .cse4 6) main_~x~0))) (and (<= 2 main_~y~0) (<= main_~y~0 2) (<= (+ .cse4 1) main_~x~0)) (and .cse0 (<= main_~y~0 4) (<= 1 (+ main_~y~0 (* 3 (div (+ (* main_~y~0 (- 89478485)) 89478484) 268435456))))) (and .cse0 (<= main_~y~0 8) (<= main_~x~0 (+ (* 4294967296 (div (+ main_~x~0 (- 3)) 4294967296)) 7)) (<= .cse5 (* 3 (div (+ (* main_~y~0 178956971) 178956968) 536870912)))) (and .cse0 (<= .cse5 (* 3 (div (+ (* main_~y~0 715827883) 715827872) 2147483648))) (<= (+ .cse4 5) main_~x~0) (<= main_~y~0 32)) (and .cse0 (<= main_~y~0 16) (<= 1 (+ main_~y~0 (* 3 (div (+ (* main_~y~0 (- 357913941)) 357913936) 1073741824)))) (<= main_~x~0 (+ (* 4294967296 (div (+ main_~x~0 (- 4)) 4294967296)) 8))))) [2020-10-29 09:38:32,207 INFO L270 CegarLoopResult]: At program point L16-3(lines 16 19) the Hoare annotation is: (<= (let ((.cse2 (div main_~y~0 4294967296))) (let ((.cse1 (* .cse2 (- 4294967296)))) (let ((.cse0 (div (+ main_~y~0 .cse1) 3))) (+ (* 12297829379609722880 (div (+ main_~y~0 (* .cse0 (- 3)) .cse1) 4294967296)) (* 8589934592 .cse0) (* 12297829383904690176 .cse2) 1431655776)))) (* 2863311531 main_~y~0)) [2020-10-29 09:38:32,207 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 12 22) no Hoare annotation was computed. [2020-10-29 09:38:32,207 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-29 09:38:32,207 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-29 09:38:32,207 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (and (not (<= 2 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 1) 0)) (not (<= 0 (+ |__VERIFIER_assert_#in~cond| (* 3 (div (+ (* |__VERIFIER_assert_#in~cond| (- 1431655765)) (- 1431655767)) 4294967296)) 2)))) [2020-10-29 09:38:32,208 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-29 09:38:32,208 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-29 09:38:32,208 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-29 09:38:32,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:38:32 BoogieIcfgContainer [2020-10-29 09:38:32,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:38:32,232 INFO L168 Benchmark]: Toolchain (without parser) took 45990.08 ms. Allocated memory was 162.5 MB in the beginning and 224.4 MB in the end (delta: 61.9 MB). Free memory was 138.5 MB in the beginning and 95.6 MB in the end (delta: 42.8 MB). Peak memory consumption was 105.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:38:32,233 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 162.5 MB. Free memory is still 135.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:38:32,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.39 ms. Allocated memory is still 162.5 MB. Free memory was 137.8 MB in the beginning and 128.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:38:32,235 INFO L168 Benchmark]: Boogie Preprocessor took 55.21 ms. Allocated memory is still 162.5 MB. Free memory was 128.8 MB in the beginning and 127.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:38:32,236 INFO L168 Benchmark]: RCFGBuilder took 357.64 ms. Allocated memory is still 162.5 MB. Free memory was 127.4 MB in the beginning and 115.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:38:32,237 INFO L168 Benchmark]: TraceAbstraction took 45256.13 ms. Allocated memory was 162.5 MB in the beginning and 224.4 MB in the end (delta: 61.9 MB). Free memory was 114.7 MB in the beginning and 95.6 MB in the end (delta: 19.0 MB). Peak memory consumption was 81.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:38:32,243 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 162.5 MB. Free memory is still 135.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 308.39 ms. Allocated memory is still 162.5 MB. Free memory was 137.8 MB in the beginning and 128.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.21 ms. Allocated memory is still 162.5 MB. Free memory was 128.8 MB in the beginning and 127.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 357.64 ms. Allocated memory is still 162.5 MB. Free memory was 127.4 MB in the beginning and 115.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 45256.13 ms. Allocated memory was 162.5 MB in the beginning and 224.4 MB in the end (delta: 61.9 MB). Free memory was 114.7 MB in the beginning and 95.6 MB in the end (delta: 19.0 MB). Peak memory consumption was 81.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 16]: Loop Invariant Derived loop invariant: ((((((1 <= y && y <= 1) || (((x <= 4294967296 * ((x + -2) / 4294967296) + 6 && 4294967295 * ((y + (y + y / 4294967296 * -4294967296) / 3 * -3 + y / 4294967296 * -4294967296) / 4294967296) + 3 * ((y + y / 4294967296 * -4294967296) / 3) + 4294967295 * (y / 4294967296) + 1 <= y) && y / 4294967296 <= 0) && 4294967296 * (x / 4294967296) + 6 <= x)) || ((2 <= y && y <= 2) && 4294967296 * (x / 4294967296) + 1 <= x)) || ((x <= 4294967296 * ((x + -2) / 4294967296) + 6 && y <= 4) && 1 <= y + 3 * ((y * -89478485 + 89478484) / 268435456))) || (((x <= 4294967296 * ((x + -2) / 4294967296) + 6 && y <= 8) && x <= 4294967296 * ((x + -3) / 4294967296) + 7) && y + 1 <= 3 * ((y * 178956971 + 178956968) / 536870912))) || (((x <= 4294967296 * ((x + -2) / 4294967296) + 6 && y + 1 <= 3 * ((y * 715827883 + 715827872) / 2147483648)) && 4294967296 * (x / 4294967296) + 5 <= x) && y <= 32)) || (((x <= 4294967296 * ((x + -2) / 4294967296) + 6 && y <= 16) && 1 <= y + 3 * ((y * -357913941 + 357913936) / 1073741824)) && x <= 4294967296 * ((x + -4) / 4294967296) + 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 38.6s, OverallIterations: 8, TraceHistogramMax: 7, AutomataDifference: 27.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 73 SDslu, 284 SDs, 0 SdLazy, 440 SolverSat, 70 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 6.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 28.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, 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, 8 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 32 PreInvPairs, 46 NumberOfFragments, 341 HoareAnnotationTreeSize, 32 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1489 FormulaSimplificationTreeSizeReductionInter, 6.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 18437 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 1 PerfectInterpolantSequences, 19/84 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...