/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/loop-acceleration/phases_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:00:52,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:00:52,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:00:52,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:00:52,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:00:52,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:00:52,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:00:52,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:00:52,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:00:52,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:00:52,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:00:52,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:00:52,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:00:52,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:00:52,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:00:52,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:00:52,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:00:52,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:00:52,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:00:52,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:00:52,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:00:52,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:00:52,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:00:52,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:00:52,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:00:52,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:00:52,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:00:52,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:00:52,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:00:52,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:00:52,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:00:52,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:00:52,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:00:52,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:00:52,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:00:52,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:00:52,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:00:52,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:00:52,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:00:52,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:00:52,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:00:52,364 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 16:00:52,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:00:52,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:00:52,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:00:52,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:00:52,389 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:00:52,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:00:52,389 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:00:52,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:00:52,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:00:52,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:00:52,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:00:52,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:00:52,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:00:52,394 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:00:52,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:00:52,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:00:52,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:00:52,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:00:52,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:00:52,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:00:52,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:00:52,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:00:52,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:00:52,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:00:52,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:00:52,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:00:52,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:00:52,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:00:52,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:00:52,400 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 16:00:52,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:00:52,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:00:52,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:00:52,715 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:00:52,715 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:00:52,716 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_1-1.c [2020-10-12 16:00:52,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96d808852/2a44a8de466141e3b307102155856bf1/FLAG68a1f563a [2020-10-12 16:00:53,285 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:00:53,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/phases_1-1.c [2020-10-12 16:00:53,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96d808852/2a44a8de466141e3b307102155856bf1/FLAG68a1f563a [2020-10-12 16:00:53,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96d808852/2a44a8de466141e3b307102155856bf1 [2020-10-12 16:00:53,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:00:53,648 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:00:53,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:00:53,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:00:53,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:00:53,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:00:53" (1/1) ... [2020-10-12 16:00:53,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@419c06a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:53, skipping insertion in model container [2020-10-12 16:00:53,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:00:53" (1/1) ... [2020-10-12 16:00:53,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:00:53,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:00:53,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:00:53,888 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:00:53,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:00:53,922 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:00:53,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:53 WrapperNode [2020-10-12 16:00:53,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:00:53,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:00:53,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:00:53,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:00:53,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:53" (1/1) ... [2020-10-12 16:00:53,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:53" (1/1) ... [2020-10-12 16:00:53,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:53" (1/1) ... [2020-10-12 16:00:53,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:53" (1/1) ... [2020-10-12 16:00:53,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:53" (1/1) ... [2020-10-12 16:00:53,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:53" (1/1) ... [2020-10-12 16:00:53,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:53" (1/1) ... [2020-10-12 16:00:54,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:00:54,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:00:54,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:00:54,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:00:54,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:53" (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 16:00:54,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:00:54,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:00:54,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:00:54,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:00:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:00:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:00:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:00:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:00:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:00:54,322 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:00:54,322 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 16:00:54,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:00:54 BoogieIcfgContainer [2020-10-12 16:00:54,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:00:54,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:00:54,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:00:54,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:00:54,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:00:53" (1/3) ... [2020-10-12 16:00:54,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e8071c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:00:54, skipping insertion in model container [2020-10-12 16:00:54,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:00:53" (2/3) ... [2020-10-12 16:00:54,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e8071c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:00:54, skipping insertion in model container [2020-10-12 16:00:54,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:00:54" (3/3) ... [2020-10-12 16:00:54,334 INFO L109 eAbstractionObserver]: Analyzing ICFG phases_1-1.c [2020-10-12 16:00:54,345 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:00:54,352 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:00:54,365 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:00:54,386 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:00:54,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:00:54,387 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:00:54,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:00:54,387 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:00:54,387 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:00:54,387 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:00:54,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:00:54,406 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-12 16:00:54,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 16:00:54,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:00:54,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:00:54,413 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:00:54,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:00:54,419 INFO L82 PathProgramCache]: Analyzing trace with hash -721501374, now seen corresponding path program 1 times [2020-10-12 16:00:54,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:00:54,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557952649] [2020-10-12 16:00:54,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:00:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:00:54,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:54,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:54,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:00:54,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 16:00:54,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:00:54,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-12 16:00:54,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:00:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:00:54,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:00:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:00:54,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 16:00:55,091 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 15 [2020-10-12 16:00:55,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:00:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:00:55,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:55,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:00:55,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:00:55,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:00:55,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:00:55,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:00:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:00:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:00:55,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:00:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:00:55,125 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 16:00:55,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557952649] [2020-10-12 16:00:55,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:00:55,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:00:55,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212216057] [2020-10-12 16:00:55,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:00:55,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:00:55,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:00:55,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:00:55,154 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-10-12 16:00:55,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:00:55,261 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-10-12 16:00:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:00:55,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-12 16:00:55,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:00:55,272 INFO L225 Difference]: With dead ends: 38 [2020-10-12 16:00:55,272 INFO L226 Difference]: Without dead ends: 14 [2020-10-12 16:00:55,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:00:55,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-12 16:00:55,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-12 16:00:55,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-12 16:00:55,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-10-12 16:00:55,311 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2020-10-12 16:00:55,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:00:55,312 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-10-12 16:00:55,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:00:55,312 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-10-12 16:00:55,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 16:00:55,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:00:55,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:00:55,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:00:55,314 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:00:55,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:00:55,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1082855947, now seen corresponding path program 1 times [2020-10-12 16:00:55,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:00:55,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428161330] [2020-10-12 16:00:55,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:00:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:00:55,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:55,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:00:55,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 16:00:55,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:00:55,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 16:00:55,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:00:55,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:00:55,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:00:55,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:00:55,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 16:00:55,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:00:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:00:55,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:55,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:00:55,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:00:55,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:00:55,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:00:55,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:00:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:00:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:00:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:00:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-12 16:00:55,492 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 16:00:55,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428161330] [2020-10-12 16:00:55,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:00:55,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 16:00:55,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41286764] [2020-10-12 16:00:55,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 16:00:55,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:00:55,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 16:00:55,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 16:00:55,497 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2020-10-12 16:00:55,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:00:55,524 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2020-10-12 16:00:55,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 16:00:55,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-12 16:00:55,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:00:55,528 INFO L225 Difference]: With dead ends: 23 [2020-10-12 16:00:55,528 INFO L226 Difference]: Without dead ends: 18 [2020-10-12 16:00:55,529 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 16:00:55,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-12 16:00:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2020-10-12 16:00:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-12 16:00:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-10-12 16:00:55,535 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2020-10-12 16:00:55,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:00:55,536 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-10-12 16:00:55,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 16:00:55,536 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-10-12 16:00:55,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 16:00:55,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:00:55,537 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:00:55,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:00:55,537 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:00:55,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:00:55,538 INFO L82 PathProgramCache]: Analyzing trace with hash -109889104, now seen corresponding path program 1 times [2020-10-12 16:00:55,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:00:55,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719482867] [2020-10-12 16:00:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:00:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:00:55,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:55,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:55,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:55,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:00:55,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 16:00:55,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:00:55,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-12 16:00:55,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:00:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:00:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:00:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:00:55,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:00:55,986 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 12 [2020-10-12 16:00:56,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:00:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:00:56,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:00:56,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:00:56,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:00:56,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:00:56,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:00:56,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:00:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:00:56,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:00:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:00:56,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:00:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:00:56,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719482867] [2020-10-12 16:00:56,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:00:56,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 16:00:56,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844910294] [2020-10-12 16:00:56,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:00:56,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:00:56,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:00:56,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:00:56,025 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 6 states. [2020-10-12 16:00:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:00:56,111 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2020-10-12 16:00:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:00:56,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-12 16:00:56,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:00:56,113 INFO L225 Difference]: With dead ends: 18 [2020-10-12 16:00:56,113 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 16:00:56,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:00:56,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 16:00:56,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 16:00:56,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 16:00:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 16:00:56,117 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-10-12 16:00:56,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:00:56,117 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 16:00:56,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:00:56,118 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 16:00:56,118 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 16:00:56,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 16:00:56,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 16:00:56,246 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-12 16:00:56,246 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:00:56,246 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:00:56,246 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 16:00:56,247 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 16:00:56,247 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:00:56,247 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 22) the Hoare annotation is: true [2020-10-12 16:00:56,247 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 22) no Hoare annotation was computed. [2020-10-12 16:00:56,247 INFO L268 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-10-12 16:00:56,247 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 22) no Hoare annotation was computed. [2020-10-12 16:00:56,249 INFO L264 CegarLoopResult]: At program point L14-2(lines 13 19) the Hoare annotation is: (or (= main_~x~0 (let ((.cse0 (div main_~x~0 2))) (+ (* .cse0 2) (* (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296) 4294967296)))) (<= main_~x~0 (+ (* 4294967296 (div main_~x~0 4294967296)) 65520))) [2020-10-12 16:00:56,249 INFO L264 CegarLoopResult]: At program point L13-2(lines 13 19) the Hoare annotation is: (= main_~x~0 (let ((.cse0 (div main_~x~0 2))) (+ (* .cse0 2) (* (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296) 4294967296)))) [2020-10-12 16:00:56,250 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-10-12 16:00:56,250 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-10-12 16:00:56,250 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-10-12 16:00:56,250 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-10-12 16:00:56,250 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-12 16:00:56,250 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-10-12 16:00:56,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:00:56 BoogieIcfgContainer [2020-10-12 16:00:56,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:00:56,283 INFO L168 Benchmark]: Toolchain (without parser) took 2632.65 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 103.5 MB in the beginning and 178.6 MB in the end (delta: -75.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-10-12 16:00:56,285 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-12 16:00:56,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.04 ms. Allocated memory is still 139.5 MB. Free memory was 103.1 MB in the beginning and 93.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-10-12 16:00:56,288 INFO L168 Benchmark]: Boogie Preprocessor took 139.82 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 93.2 MB in the beginning and 183.4 MB in the end (delta: -90.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-10-12 16:00:56,290 INFO L168 Benchmark]: RCFGBuilder took 261.77 ms. Allocated memory is still 204.5 MB. Free memory was 183.4 MB in the beginning and 171.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:00:56,296 INFO L168 Benchmark]: TraceAbstraction took 1951.47 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 171.3 MB in the beginning and 178.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-10-12 16:00:56,308 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.04 ms. Allocated memory is still 139.5 MB. Free memory was 103.1 MB in the beginning and 93.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.82 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 93.2 MB in the beginning and 183.4 MB in the end (delta: -90.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 261.77 ms. Allocated memory is still 204.5 MB. Free memory was 183.4 MB in the beginning and 171.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1951.47 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 171.3 MB in the beginning and 178.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 24.1 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: 13]: Loop Invariant Derived loop invariant: x == x / 2 * 2 + (x / 2 * -2 + x) / 4294967296 * 4294967296 || x <= 4294967296 * (x / 4294967296) + 65520 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 12 SDslu, 66 SDs, 0 SdLazy, 54 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 53 HoareAnnotationTreeSize, 10 FomulaSimplifications, 161 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 1645 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 4/5 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...