/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/loops-crafted-1/loopv1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:49:17,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:49:17,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:49:17,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:49:17,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:49:17,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:49:17,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:49:17,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:49:17,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:49:17,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:49:17,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:49:17,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:49:17,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:49:17,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:49:17,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:49:17,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:49:17,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:49:17,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:49:17,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:49:17,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:49:17,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:49:17,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:49:17,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:49:17,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:49:17,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:49:17,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:49:17,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:49:17,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:49:17,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:49:17,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:49:17,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:49:17,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:49:17,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:49:17,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:49:17,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:49:17,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:49:17,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:49:17,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:49:17,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:49:17,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:49:17,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:49:17,567 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 09:49:17,595 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:49:17,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:49:17,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:49:17,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:49:17,597 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:49:17,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:49:17,598 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:49:17,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:49:17,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:49:17,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:49:17,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:49:17,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:49:17,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:49:17,600 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:49:17,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:49:17,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:49:17,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:49:17,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:49:17,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:49:17,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:49:17,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:49:17,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:49:17,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:49:17,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:49:17,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:49:17,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:49:17,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:49:17,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:49:17,604 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:49:17,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:49:17,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:49:18,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:49:18,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:49:18,017 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:49:18,017 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:49:18,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-10-29 09:49:18,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d596ef93/efb21755e1db4979bb92b67f20336f8a/FLAG8ce56e3e7 [2020-10-29 09:49:18,768 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:49:18,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-10-29 09:49:18,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d596ef93/efb21755e1db4979bb92b67f20336f8a/FLAG8ce56e3e7 [2020-10-29 09:49:19,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d596ef93/efb21755e1db4979bb92b67f20336f8a [2020-10-29 09:49:19,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:49:19,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:49:19,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:49:19,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:49:19,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:49:19,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:49:19" (1/1) ... [2020-10-29 09:49:19,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f2e156b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:49:19, skipping insertion in model container [2020-10-29 09:49:19,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:49:19" (1/1) ... [2020-10-29 09:49:19,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:49:19,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:49:19,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:49:19,419 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:49:19,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:49:19,457 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:49:19,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:49:19 WrapperNode [2020-10-29 09:49:19,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:49:19,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:49:19,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:49:19,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:49:19,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:49:19" (1/1) ... [2020-10-29 09:49:19,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:49:19" (1/1) ... [2020-10-29 09:49:19,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:49:19" (1/1) ... [2020-10-29 09:49:19,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:49:19" (1/1) ... [2020-10-29 09:49:19,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:49:19" (1/1) ... [2020-10-29 09:49:19,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:49:19" (1/1) ... [2020-10-29 09:49:19,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:49:19" (1/1) ... [2020-10-29 09:49:19,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:49:19,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:49:19,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:49:19,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:49:19,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:49:19" (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 09:49:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:49:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:49:19,588 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:49:19,588 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:49:19,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:49:19,588 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:49:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:49:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:49:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:49:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:49:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:49:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:49:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:49:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:49:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:49:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:49:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:49:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:49:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:49:19,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:49:19,929 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:49:19,929 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:49:19,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:49:19 BoogieIcfgContainer [2020-10-29 09:49:19,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:49:19,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:49:19,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:49:19,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:49:19,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:49:19" (1/3) ... [2020-10-29 09:49:19,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e23245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:49:19, skipping insertion in model container [2020-10-29 09:49:19,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:49:19" (2/3) ... [2020-10-29 09:49:19,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e23245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:49:19, skipping insertion in model container [2020-10-29 09:49:19,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:49:19" (3/3) ... [2020-10-29 09:49:19,954 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv1.c [2020-10-29 09:49:19,967 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:49:19,976 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:49:19,991 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:49:20,017 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:49:20,018 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:49:20,018 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:49:20,018 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:49:20,018 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:49:20,018 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:49:20,018 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:49:20,019 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:49:20,036 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-29 09:49:20,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-29 09:49:20,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:49:20,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:49:20,043 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:49:20,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:49:20,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1816841127, now seen corresponding path program 1 times [2020-10-29 09:49:20,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:49:20,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274282058] [2020-10-29 09:49:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:49:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:49:20,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:49:20,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:49:20,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:49:20,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:49:20,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:49:20,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-10-29 09:49:20,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:49:20,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:49:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:49:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:49:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:49:20,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:49:20,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:49:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:49:20,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:49:21,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:49:21,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:49:21,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:49:21,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 09:49:21,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:49:21,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:49:21,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:49:21,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:49:21,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:49:21,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:49:21,019 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 09:49:21,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274282058] [2020-10-29 09:49:21,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:49:21,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:49:21,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54394398] [2020-10-29 09:49:21,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:49:21,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:49:21,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:49:21,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:49:21,055 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-10-29 09:49:21,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:49:21,353 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2020-10-29 09:49:21,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:49:21,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-29 09:49:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:49:21,364 INFO L225 Difference]: With dead ends: 48 [2020-10-29 09:49:21,364 INFO L226 Difference]: Without dead ends: 17 [2020-10-29 09:49:21,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:49:21,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-29 09:49:21,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-10-29 09:49:21,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-29 09:49:21,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-10-29 09:49:21,409 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2020-10-29 09:49:21,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:49:21,410 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-10-29 09:49:21,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:49:21,410 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-10-29 09:49:21,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 09:49:21,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:49:21,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:49:21,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:49:21,412 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:49:21,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:49:21,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1156129818, now seen corresponding path program 1 times [2020-10-29 09:49:21,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:49:21,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372566898] [2020-10-29 09:49:21,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:49:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:49:21,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:49:21,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:49:21,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:49:21,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:49:21,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 09:49:21,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:49:21,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:49:21,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:49:21,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:49:21,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:49:21,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:49:21,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:49:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:49:21,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:49:21,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:49:21,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:49:21,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:49:21,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:49:21,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:49:21,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:49:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:49:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:49:21,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:49:21,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:49:21,793 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 09:49:21,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372566898] [2020-10-29 09:49:21,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:49:21,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:49:21,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281704946] [2020-10-29 09:49:21,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:49:21,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:49:21,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:49:21,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:49:21,807 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 7 states. [2020-10-29 09:49:22,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:49:22,104 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-29 09:49:22,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:49:22,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-29 09:49:22,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:49:22,106 INFO L225 Difference]: With dead ends: 25 [2020-10-29 09:49:22,106 INFO L226 Difference]: Without dead ends: 17 [2020-10-29 09:49:22,107 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 09:49:22,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-29 09:49:22,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-29 09:49:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-29 09:49:22,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-29 09:49:22,114 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2020-10-29 09:49:22,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:49:22,114 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-29 09:49:22,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:49:22,114 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-29 09:49:22,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 09:49:22,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:49:22,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:49:22,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:49:22,116 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:49:22,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:49:22,116 INFO L82 PathProgramCache]: Analyzing trace with hash 618877544, now seen corresponding path program 1 times [2020-10-29 09:49:22,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:49:22,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983205688] [2020-10-29 09:49:22,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:49:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:49:22,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:49:22,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:49:22,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:49:22,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:49:22,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 09:49:22,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:49:22,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:49:22,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:49:22,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:49:22,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:49:22,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:49:22,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:49:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:49:22,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:49:22,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:49:22,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:49:22,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:49:22,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:49:22,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:49:22,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:49:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:49:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:49:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:49:22,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:49:22,445 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 09:49:22,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983205688] [2020-10-29 09:49:22,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:49:22,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:49:22,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702141516] [2020-10-29 09:49:22,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:49:22,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:49:22,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:49:22,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:49:22,452 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2020-10-29 09:49:22,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:49:22,672 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-10-29 09:49:22,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:49:22,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-29 09:49:22,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:49:22,672 INFO L225 Difference]: With dead ends: 17 [2020-10-29 09:49:22,672 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:49:22,673 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 09:49:22,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:49:22,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:49:22,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:49:22,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:49:22,674 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-29 09:49:22,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:49:22,674 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:49:22,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:49:22,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:49:22,675 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:49:22,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:49:22,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:49:22,969 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 7) no Hoare annotation was computed. [2020-10-29 09:49:22,970 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 7) the Hoare annotation is: true [2020-10-29 09:49:22,970 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 7) no Hoare annotation was computed. [2020-10-29 09:49:22,970 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2020-10-29 09:49:22,970 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:49:22,970 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)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#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 09:49:22,971 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:49:22,971 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:49:22,971 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 09:49:22,971 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:49:22,971 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:49:22,971 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 9 11) no Hoare annotation was computed. [2020-10-29 09:49:22,971 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-10-29 09:49:22,971 INFO L274 CegarLoopResult]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2020-10-29 09:49:22,972 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2020-10-29 09:49:22,972 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-10-29 09:49:22,972 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 20 34) the Hoare annotation is: true [2020-10-29 09:49:22,972 INFO L274 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-10-29 09:49:22,972 INFO L270 CegarLoopResult]: At program point L27-2(lines 25 31) the Hoare annotation is: (let ((.cse0 (div main_~i~0 3))) (or (and (<= main_~i~0 (* 3 .cse0)) (<= 3 main_~i~0)) (and (<= 0 main_~i~0) (<= main_~i~0 .cse0)))) [2020-10-29 09:49:22,972 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 20 34) no Hoare annotation was computed. [2020-10-29 09:49:22,973 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-10-29 09:49:22,973 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 31) the Hoare annotation is: (let ((.cse0 (div main_~i~0 3))) (or (and (<= main_~i~0 (* 3 .cse0)) (<= 3 main_~i~0)) (and (<= 0 main_~i~0) (<= main_~i~0 .cse0)))) [2020-10-29 09:49:22,973 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 20 34) no Hoare annotation was computed. [2020-10-29 09:49:22,973 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 12 17) the Hoare annotation is: true [2020-10-29 09:49:22,973 INFO L270 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-29 09:49:22,973 INFO L274 CegarLoopResult]: For program point L13(lines 13 15) no Hoare annotation was computed. [2020-10-29 09:49:22,973 INFO L274 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-10-29 09:49:22,974 INFO L274 CegarLoopResult]: For program point L13-2(lines 12 17) no Hoare annotation was computed. [2020-10-29 09:49:22,974 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 12 17) no Hoare annotation was computed. [2020-10-29 09:49:22,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:49:22 BoogieIcfgContainer [2020-10-29 09:49:22,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:49:22,999 INFO L168 Benchmark]: Toolchain (without parser) took 3878.71 ms. Allocated memory was 163.6 MB in the beginning and 215.0 MB in the end (delta: 51.4 MB). Free memory was 137.8 MB in the beginning and 151.6 MB in the end (delta: -13.7 MB). Peak memory consumption was 39.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:49:23,000 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 163.6 MB. Free memory is still 136.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:49:23,001 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.15 ms. Allocated memory is still 163.6 MB. Free memory was 137.1 MB in the beginning and 127.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:49:23,003 INFO L168 Benchmark]: Boogie Preprocessor took 51.77 ms. Allocated memory is still 163.6 MB. Free memory was 127.9 MB in the beginning and 126.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:49:23,005 INFO L168 Benchmark]: RCFGBuilder took 419.26 ms. Allocated memory is still 163.6 MB. Free memory was 126.3 MB in the beginning and 112.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:49:23,008 INFO L168 Benchmark]: TraceAbstraction took 3052.60 ms. Allocated memory was 163.6 MB in the beginning and 215.0 MB in the end (delta: 51.4 MB). Free memory was 112.5 MB in the beginning and 151.6 MB in the end (delta: -39.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:49:23,017 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 163.6 MB. Free memory is still 136.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 333.15 ms. Allocated memory is still 163.6 MB. Free memory was 137.1 MB in the beginning and 127.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.77 ms. Allocated memory is still 163.6 MB. Free memory was 127.9 MB in the beginning and 126.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 419.26 ms. Allocated memory is still 163.6 MB. Free memory was 126.3 MB in the beginning and 112.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3052.60 ms. Allocated memory was 163.6 MB in the beginning and 215.0 MB in the end (delta: 51.4 MB). Free memory was 112.5 MB in the beginning and 151.6 MB in the end (delta: -39.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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: 25]: Loop Invariant Derived loop invariant: (i <= 3 * (i / 3) && 3 <= i) || (0 <= i && i <= i / 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 53 SDslu, 75 SDs, 0 SdLazy, 164 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 22 NumberOfFragments, 84 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 345 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 3128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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...