/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=BIGGEST --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 -i ../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:18:45,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:18:45,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:18:45,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:18:45,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:18:45,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:18:45,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:18:45,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:18:45,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:18:45,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:18:45,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:18:45,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:18:45,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:18:45,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:18:45,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:18:45,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:18:45,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:18:45,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:18:45,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:18:45,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:18:45,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:18:45,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:18:45,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:18:45,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:18:45,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:18:45,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:18:45,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:18:45,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:18:45,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:18:45,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:18:45,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:18:45,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:18:45,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:18:45,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:18:45,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:18:45,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:18:45,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:18:45,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:18:45,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:18:45,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:18:45,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:18:45,316 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 [2020-10-12 16:18:45,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:18:45,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:18:45,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:18:45,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:18:45,340 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:18:45,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:18:45,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:18:45,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:18:45,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:18:45,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:18:45,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:18:45,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:18:45,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:18:45,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:18:45,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:18:45,342 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:18:45,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:18:45,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:18:45,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:18:45,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:18:45,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:18:45,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:18:45,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:18:45,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:18:45,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:18:45,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:18:45,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:18:45,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:18:45,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:18:45,344 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 16:18:45,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:18:45,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:18:45,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:18:45,695 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:18:45,695 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:18:45,696 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-10-12 16:18:45,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdf88a2bd/9ee8f0f604e64570a985485e7b58d24a/FLAG1488642a0 [2020-10-12 16:18:46,128 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:18:46,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2020-10-12 16:18:46,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdf88a2bd/9ee8f0f604e64570a985485e7b58d24a/FLAG1488642a0 [2020-10-12 16:18:46,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdf88a2bd/9ee8f0f604e64570a985485e7b58d24a [2020-10-12 16:18:46,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:18:46,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:18:46,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:18:46,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:18:46,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:18:46,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:18:46" (1/1) ... [2020-10-12 16:18:46,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780fc4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:46, skipping insertion in model container [2020-10-12 16:18:46,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:18:46" (1/1) ... [2020-10-12 16:18:46,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:18:46,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:18:46,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:18:46,781 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:18:46,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:18:46,812 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:18:46,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:46 WrapperNode [2020-10-12 16:18:46,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:18:46,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:18:46,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:18:46,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:18:46,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:46" (1/1) ... [2020-10-12 16:18:46,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:46" (1/1) ... [2020-10-12 16:18:46,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:46" (1/1) ... [2020-10-12 16:18:46,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:46" (1/1) ... [2020-10-12 16:18:46,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:46" (1/1) ... [2020-10-12 16:18:46,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:46" (1/1) ... [2020-10-12 16:18:46,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:46" (1/1) ... [2020-10-12 16:18:46,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:18:46,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:18:46,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:18:46,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:18:46,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:46" (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 [2020-10-12 16:18:47,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:18:47,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:18:47,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:18:47,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:18:47,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:18:47,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:18:47,013 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:18:47,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:18:47,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:18:47,230 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:18:47,230 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-12 16:18:47,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:18:47 BoogieIcfgContainer [2020-10-12 16:18:47,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:18:47,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:18:47,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:18:47,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:18:47,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:18:46" (1/3) ... [2020-10-12 16:18:47,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279545f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:18:47, skipping insertion in model container [2020-10-12 16:18:47,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:46" (2/3) ... [2020-10-12 16:18:47,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279545f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:18:47, skipping insertion in model container [2020-10-12 16:18:47,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:18:47" (3/3) ... [2020-10-12 16:18:47,243 INFO L109 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2020-10-12 16:18:47,255 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:18:47,263 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:18:47,283 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:18:47,314 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:18:47,314 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:18:47,314 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:18:47,314 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:18:47,314 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:18:47,315 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:18:47,315 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:18:47,315 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:18:47,340 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-12 16:18:47,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 16:18:47,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:18:47,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:18:47,349 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:18:47,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:18:47,356 INFO L82 PathProgramCache]: Analyzing trace with hash 2037426592, now seen corresponding path program 1 times [2020-10-12 16:18:47,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:18:47,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510185406] [2020-10-12 16:18:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:18:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:18:47,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:18:47,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:18:47,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 16:18:47,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:18:47,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 16:18:47,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:18:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:18:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:18:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:18:47,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 16:18:47,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:18:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:18:47,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:18:47,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:18:47,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:18:47,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:18:47,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:18:47,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:18:47,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:18:47,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:18:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:18:47,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 16:18:47,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:18:47,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510185406] [2020-10-12 16:18:47,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:18:47,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-12 16:18:47,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961452334] [2020-10-12 16:18:47,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-12 16:18:47,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:18:47,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-12 16:18:47,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-12 16:18:47,661 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-10-12 16:18:47,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:18:47,683 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2020-10-12 16:18:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-12 16:18:47,684 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-10-12 16:18:47,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:18:47,691 INFO L225 Difference]: With dead ends: 49 [2020-10-12 16:18:47,691 INFO L226 Difference]: Without dead ends: 22 [2020-10-12 16:18:47,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-12 16:18:47,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-12 16:18:47,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-12 16:18:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-12 16:18:47,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-10-12 16:18:47,730 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2020-10-12 16:18:47,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:18:47,730 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-10-12 16:18:47,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-12 16:18:47,731 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-10-12 16:18:47,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 16:18:47,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:18:47,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:18:47,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:18:47,732 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:18:47,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:18:47,733 INFO L82 PathProgramCache]: Analyzing trace with hash 2031885466, now seen corresponding path program 1 times [2020-10-12 16:18:47,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:18:47,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355043404] [2020-10-12 16:18:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:18:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:18:47,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:18:47,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:18:47,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 16:18:47,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:18:47,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-12 16:18:47,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:18:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:18:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 16:18:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:18:47,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:18:47,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:18:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:18:47,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:18:48,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:18:48,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:18:48,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:18:48,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:18:48,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:18:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:18:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:18:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:18:48,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:18:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:18:48,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355043404] [2020-10-12 16:18:48,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:18:48,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 16:18:48,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654061295] [2020-10-12 16:18:48,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 16:18:48,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:18:48,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 16:18:48,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 16:18:48,012 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2020-10-12 16:18:48,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:18:48,056 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2020-10-12 16:18:48,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 16:18:48,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-12 16:18:48,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:18:48,059 INFO L225 Difference]: With dead ends: 48 [2020-10-12 16:18:48,059 INFO L226 Difference]: Without dead ends: 31 [2020-10-12 16:18:48,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 16:18:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-12 16:18:48,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-10-12 16:18:48,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-12 16:18:48,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-12 16:18:48,068 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 14 [2020-10-12 16:18:48,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:18:48,069 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-12 16:18:48,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 16:18:48,069 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-12 16:18:48,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 16:18:48,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:18:48,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:18:48,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:18:48,071 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:18:48,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:18:48,071 INFO L82 PathProgramCache]: Analyzing trace with hash -935219944, now seen corresponding path program 1 times [2020-10-12 16:18:48,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:18:48,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459991331] [2020-10-12 16:18:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:18:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:18:48,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:18:48,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:18:48,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:18:48,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:18:48,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 16:18:48,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:18:48,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-12 16:18:48,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:18:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:18:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:18:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:18:48,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:18:48,703 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 22 [2020-10-12 16:18:48,856 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 13 [2020-10-12 16:18:48,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:18:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:18:48,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:18:48,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:18:48,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:18:48,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:18:48,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:18:48,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:18:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:18:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:18:48,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:18:48,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:18:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:18:48,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459991331] [2020-10-12 16:18:48,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:18:48,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 16:18:48,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295597699] [2020-10-12 16:18:48,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 16:18:48,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:18:48,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 16:18:48,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:18:48,891 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2020-10-12 16:18:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:18:48,986 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2020-10-12 16:18:48,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:18:48,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-12 16:18:48,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:18:48,987 INFO L225 Difference]: With dead ends: 30 [2020-10-12 16:18:48,988 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 16:18:48,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:18:48,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 16:18:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 16:18:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 16:18:48,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 16:18:48,990 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-12 16:18:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:18:48,992 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 16:18:48,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 16:18:48,993 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 16:18:48,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 16:18:48,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 16:18:48,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 16:18:51,151 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-12 16:18:53,290 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-12 16:18:55,359 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-12 16:18:57,428 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-12 16:18:57,432 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-12 16:18:57,432 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:18:57,432 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:18:57,432 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 16:18:57,432 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 16:18:57,432 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:18:57,432 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2020-10-12 16:18:57,433 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2020-10-12 16:18:57,433 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 23) the Hoare annotation is: (or (not (= main_~v~0 (let ((.cse0 (div main_~v~0 4))) (+ (* 4294967296 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) (* 4 .cse0))))) (<= main_~v~0 (+ (* 4294967296 (div main_~v~0 4294967296)) 9))) [2020-10-12 16:18:57,433 INFO L264 CegarLoopResult]: At program point L20-2(lines 20 23) the Hoare annotation is: (or (not (= main_~v~0 (let ((.cse0 (div main_~v~0 4))) (+ (* 4294967296 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) (* 4 .cse0))))) (<= main_~v~0 (+ (* 4294967296 (div main_~v~0 4294967296)) 9))) [2020-10-12 16:18:57,433 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-10-12 16:18:57,434 INFO L264 CegarLoopResult]: At program point L21-3(line 21) the Hoare annotation is: (let ((.cse1 (div main_~v~0 4))) (let ((.cse0 (div (+ main_~v~0 (* .cse1 (- 4))) 4294967296))) (or (not (= main_~v~0 (+ (* .cse0 4294967296) (* .cse1 4)))) (<= main_~v~0 (+ (* 1073741824 .cse0) (* 3221225472 (div main_~v~0 4294967296)) .cse1 7))))) [2020-10-12 16:18:57,434 INFO L264 CegarLoopResult]: At program point L21-4(line 21) the Hoare annotation is: (not (= main_~v~0 (let ((.cse0 (div main_~v~0 4))) (+ (* 4294967296 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) (* 4 .cse0))))) [2020-10-12 16:18:57,434 INFO L268 CegarLoopResult]: For program point L17-2(lines 17 23) no Hoare annotation was computed. [2020-10-12 16:18:57,434 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 23) the Hoare annotation is: (or (not (= main_~v~0 (let ((.cse0 (div main_~v~0 4))) (+ (* 4294967296 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) (* 4 .cse0))))) (<= main_~v~0 (+ (* 4294967296 (div main_~v~0 4294967296)) 9))) [2020-10-12 16:18:57,434 INFO L268 CegarLoopResult]: For program point L17-4(lines 17 23) no Hoare annotation was computed. [2020-10-12 16:18:57,435 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2020-10-12 16:18:57,435 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2020-10-12 16:18:57,435 INFO L268 CegarLoopResult]: For program point L22(lines 20 23) no Hoare annotation was computed. [2020-10-12 16:18:57,435 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 23) no Hoare annotation was computed. [2020-10-12 16:18:57,435 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 23) the Hoare annotation is: (or (not (= main_~v~0 (let ((.cse0 (div main_~v~0 4))) (+ (* 4294967296 (div (+ main_~v~0 (* .cse0 (- 4))) 4294967296)) (* 4 .cse0))))) (<= main_~v~0 (+ (* 4294967296 (div main_~v~0 4294967296)) 9))) [2020-10-12 16:18:57,436 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-10-12 16:18:57,436 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-10-12 16:18:57,436 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-10-12 16:18:57,436 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-10-12 16:18:57,436 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-12 16:18:57,436 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-10-12 16:18:57,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:18:57 BoogieIcfgContainer [2020-10-12 16:18:57,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:18:57,481 INFO L168 Benchmark]: Toolchain (without parser) took 10950.50 ms. Allocated memory was 146.3 MB in the beginning and 233.8 MB in the end (delta: 87.6 MB). Free memory was 102.0 MB in the beginning and 168.5 MB in the end (delta: -66.4 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-10-12 16:18:57,482 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-12 16:18:57,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.16 ms. Allocated memory is still 146.3 MB. Free memory was 101.8 MB in the beginning and 92.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-10-12 16:18:57,486 INFO L168 Benchmark]: Boogie Preprocessor took 125.33 ms. Allocated memory was 146.3 MB in the beginning and 201.3 MB in the end (delta: 55.1 MB). Free memory was 92.1 MB in the beginning and 179.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-12 16:18:57,487 INFO L168 Benchmark]: RCFGBuilder took 296.17 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 165.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:18:57,489 INFO L168 Benchmark]: TraceAbstraction took 10241.33 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 165.1 MB in the beginning and 168.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:18:57,495 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.16 ms. Allocated memory is still 146.3 MB. Free memory was 101.8 MB in the beginning and 92.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.33 ms. Allocated memory was 146.3 MB in the beginning and 201.3 MB in the end (delta: 55.1 MB). Free memory was 92.1 MB in the beginning and 179.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 296.17 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 165.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10241.33 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 165.1 MB in the beginning and 168.5 MB in the end (delta: -3.4 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 21]: Loop Invariant Derived loop invariant: !(v == (v + v / 4 * -4) / 4294967296 * 4294967296 + v / 4 * 4) || v <= 1073741824 * ((v + v / 4 * -4) / 4294967296) + 3221225472 * (v / 4294967296) + v / 4 + 7 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: !(v == 4294967296 * ((v + v / 4 * -4) / 4294967296) + 4 * (v / 4)) || v <= 4294967296 * (v / 4294967296) + 9 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: !(v == 4294967296 * ((v + v / 4 * -4) / 4294967296) + 4 * (v / 4)) || v <= 4294967296 * (v / 4294967296) + 9 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: !(v == 4294967296 * ((v + v / 4 * -4) / 4294967296) + 4 * (v / 4)) || v <= 4294967296 * (v / 4294967296) + 9 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !(v == 4294967296 * ((v + v / 4 * -4) / 4294967296) + 4 * (v / 4)) || v <= 4294967296 * (v / 4294967296) + 9 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 47 SDslu, 105 SDs, 0 SdLazy, 31 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 189 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 8.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 1833 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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...