/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 --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_b2_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:21:33,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:21:33,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:21:33,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:21:33,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:21:33,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:21:33,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:21:33,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:21:33,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:21:33,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:21:33,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:21:33,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:21:33,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:21:33,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:21:33,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:21:33,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:21:33,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:21:33,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:21:33,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:21:33,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:21:33,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:21:33,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:21:33,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:21:33,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:21:33,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:21:33,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:21:33,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:21:33,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:21:33,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:21:33,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:21:33,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:21:33,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:21:33,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:21:33,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:21:33,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:21:33,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:21:33,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:21:33,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:21:33,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:21:33,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:21:33,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:21:33,862 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 [2020-09-21 11:21:33,906 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:21:33,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:21:33,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:21:33,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:21:33,909 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:21:33,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:21:33,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:21:33,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:21:33,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:21:33,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:21:33,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:21:33,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:21:33,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:21:33,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:21:33,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:21:33,913 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:21:33,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:21:33,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:21:33,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:21:33,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:21:33,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:21:33,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:21:33,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:21:33,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:21:33,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:21:33,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:21:33,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:21:33,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:21:33,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:21:33,916 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.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;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:21:34,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:21:34,401 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:21:34,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:21:34,408 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:21:34,408 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:21:34,409 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b2_o3.c [2020-09-21 11:21:34,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/338f9d6ee/67daf1f9be1549f6954fc10c1448f0bd/FLAGd2ed9ae92 [2020-09-21 11:21:34,988 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:21:34,988 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b2_o3.c [2020-09-21 11:21:34,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/338f9d6ee/67daf1f9be1549f6954fc10c1448f0bd/FLAGd2ed9ae92 [2020-09-21 11:21:35,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/338f9d6ee/67daf1f9be1549f6954fc10c1448f0bd [2020-09-21 11:21:35,352 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:21:35,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:21:35,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:21:35,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:21:35,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:21:35,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:21:35" (1/1) ... [2020-09-21 11:21:35,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c096cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:35, skipping insertion in model container [2020-09-21 11:21:35,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:21:35" (1/1) ... [2020-09-21 11:21:35,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:21:35,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:21:35,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:21:35,610 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:21:35,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:21:35,648 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:21:35,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:35 WrapperNode [2020-09-21 11:21:35,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:21:35,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:21:35,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:21:35,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:21:35,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:35" (1/1) ... [2020-09-21 11:21:35,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:35" (1/1) ... [2020-09-21 11:21:35,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:35" (1/1) ... [2020-09-21 11:21:35,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:35" (1/1) ... [2020-09-21 11:21:35,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:35" (1/1) ... [2020-09-21 11:21:35,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:35" (1/1) ... [2020-09-21 11:21:35,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:35" (1/1) ... [2020-09-21 11:21:35,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:21:35,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:21:35,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:21:35,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:21:35,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:35" (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 [2020-09-21 11:21:35,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:21:35,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:21:35,850 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-21 11:21:35,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:21:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-21 11:21:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:21:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-21 11:21:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:21:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:21:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:21:36,044 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:21:36,044 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:21:36,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:21:36 BoogieIcfgContainer [2020-09-21 11:21:36,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:21:36,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:21:36,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:21:36,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:21:36,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:21:35" (1/3) ... [2020-09-21 11:21:36,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ade4929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:21:36, skipping insertion in model container [2020-09-21 11:21:36,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:35" (2/3) ... [2020-09-21 11:21:36,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ade4929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:21:36, skipping insertion in model container [2020-09-21 11:21:36,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:21:36" (3/3) ... [2020-09-21 11:21:36,058 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b2_o3.c [2020-09-21 11:21:36,069 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:21:36,079 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:21:36,098 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:21:36,126 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:21:36,126 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:21:36,126 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:21:36,127 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:21:36,127 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:21:36,127 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:21:36,127 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:21:36,128 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:21:36,149 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-09-21 11:21:36,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:21:36,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:36,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:36,157 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:36,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:36,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1250208381, now seen corresponding path program 1 times [2020-09-21 11:21:36,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:36,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806590590] [2020-09-21 11:21:36,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:36,335 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:36,335 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:36,335 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:36,336 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:36,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:21:36,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:36,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-21 11:21:36,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:36,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:36,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:21:36,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:21:36,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:36,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:36,419 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:36,420 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:36,420 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:36,420 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:36,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:36,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:36,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:36,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:36,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:36,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:36,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:36,442 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:36,442 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:36,442 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:36,442 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:36,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:36,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:36,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:21:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:21:36,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:21:36,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806590590] [2020-09-21 11:21:36,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:21:36,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:21:36,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876149819] [2020-09-21 11:21:36,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:21:36,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:36,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:21:36,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:36,514 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-09-21 11:21:36,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:36,601 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-09-21 11:21:36,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:21:36,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 11:21:36,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:36,616 INFO L225 Difference]: With dead ends: 33 [2020-09-21 11:21:36,616 INFO L226 Difference]: Without dead ends: 19 [2020-09-21 11:21:36,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:36,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-21 11:21:36,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-09-21 11:21:36,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-21 11:21:36,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-09-21 11:21:36,668 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2020-09-21 11:21:36,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:36,669 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-09-21 11:21:36,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:21:36,669 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-09-21 11:21:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 11:21:36,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:36,672 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:36,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:21:36,672 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:36,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:36,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1951994857, now seen corresponding path program 1 times [2020-09-21 11:21:36,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:36,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148282144] [2020-09-21 11:21:36,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:36,712 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:36,712 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:36,712 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:36,713 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:36,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:21:36,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:36,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:21:36,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:21:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:21:36,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:36,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:36,773 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:36,773 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:36,774 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:36,774 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:36,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:36,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:36,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:36,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:36,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:36,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:36,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:36,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:36,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:36,819 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:36,821 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:36,821 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:36,822 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:36,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:21:36,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:36,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:21:36,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:21:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:21:36,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:36,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:21:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:36,856 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:36,856 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:36,856 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:36,857 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:36,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:36,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:36,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:36,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:36,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:36,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:21:36,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148282144] [2020-09-21 11:21:36,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:21:36,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:21:36,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219296348] [2020-09-21 11:21:36,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:21:36,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:36,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:21:36,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:36,872 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2020-09-21 11:21:36,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:36,915 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-09-21 11:21:36,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:21:36,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-21 11:21:36,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:36,917 INFO L225 Difference]: With dead ends: 25 [2020-09-21 11:21:36,917 INFO L226 Difference]: Without dead ends: 21 [2020-09-21 11:21:36,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:36,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-21 11:21:36,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-09-21 11:21:36,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-21 11:21:36,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-09-21 11:21:36,928 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 20 [2020-09-21 11:21:36,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:36,929 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-09-21 11:21:36,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:21:36,929 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-09-21 11:21:36,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 11:21:36,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:36,930 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:36,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:21:36,930 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:36,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:36,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1923365706, now seen corresponding path program 1 times [2020-09-21 11:21:36,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:36,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049186462] [2020-09-21 11:21:36,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:36,976 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-21 11:21:36,976 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -4 [2020-09-21 11:21:36,976 FATAL L256 erpolLogProxyWrapper]: Difference in width: 4 [2020-09-21 11:21:36,977 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:36,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 11:21:36,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:36,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 11:21:36,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:21:36,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:21:36,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:37,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:37,040 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:37,040 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:37,040 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:37,040 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:37,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:37,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:37,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:37,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:37,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:37,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:37,101 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-21 11:21:37,104 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:37,104 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:37,104 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:37,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:21:37,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:37,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 11:21:37,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:21:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:21:37,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:37,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:21:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:37,175 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:37,180 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:37,180 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:37,180 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:37,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:37,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:21:37,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:37,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:37,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:37,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:37,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:21:37,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049186462] [2020-09-21 11:21:37,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:21:37,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:21:37,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580671293] [2020-09-21 11:21:37,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:21:37,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:37,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:21:37,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:37,202 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2020-09-21 11:21:37,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:37,227 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-09-21 11:21:37,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:21:37,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-21 11:21:37,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:37,228 INFO L225 Difference]: With dead ends: 19 [2020-09-21 11:21:37,228 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:21:37,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:21:37,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:21:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:21:37,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:21:37,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-09-21 11:21:37,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:37,232 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:21:37,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:21:37,233 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:21:37,233 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:21:37,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:21:37,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:21:37,266 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 11:21:37,266 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:21:37,267 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:21:37,267 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:21:37,267 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:21:37,267 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:21:37,267 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-09-21 11:21:37,268 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-09-21 11:21:37,268 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2020-09-21 11:21:37,268 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-21 11:21:37,268 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-09-21 11:21:37,268 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-09-21 11:21:37,268 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-21 11:21:37,269 INFO L268 CegarLoopResult]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2020-09-21 11:21:37,269 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2020-09-21 11:21:37,269 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-21 11:21:37,269 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-09-21 11:21:37,269 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-21 11:21:37,270 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-09-21 11:21:37,270 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-21 11:21:37,270 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-21 11:21:37,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:21:37 BoogieIcfgContainer [2020-09-21 11:21:37,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:21:37,281 INFO L168 Benchmark]: Toolchain (without parser) took 1925.48 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 101.7 MB in the beginning and 101.1 MB in the end (delta: 581.5 kB). Peak memory consumption was 64.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:37,282 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-21 11:21:37,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.52 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 91.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:37,284 INFO L168 Benchmark]: Boogie Preprocessor took 33.75 ms. Allocated memory is still 138.4 MB. Free memory was 91.8 MB in the beginning and 90.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:37,285 INFO L168 Benchmark]: RCFGBuilder took 365.75 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 90.3 MB in the beginning and 169.9 MB in the end (delta: -79.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:37,286 INFO L168 Benchmark]: TraceAbstraction took 1227.36 ms. Allocated memory is still 201.9 MB. Free memory was 169.2 MB in the beginning and 101.1 MB in the end (delta: 68.1 MB). Peak memory consumption was 68.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:37,291 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.52 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 91.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.75 ms. Allocated memory is still 138.4 MB. Free memory was 91.8 MB in the beginning and 90.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 365.75 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 90.3 MB in the beginning and 169.9 MB in the end (delta: -79.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1227.36 ms. Allocated memory is still 201.9 MB. Free memory was 169.2 MB in the beginning and 101.1 MB in the end (delta: 68.1 MB). Peak memory consumption was 68.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 2 SDslu, 157 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1874 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 8/8 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...