/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 SingleStatement --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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-c90d42b [2020-09-25 05:28:31,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:28:31,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:28:31,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:28:31,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:28:31,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:28:31,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:28:31,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:28:31,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:28:31,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:28:31,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:28:31,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:28:31,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:28:31,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:28:31,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:28:32,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:28:32,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:28:32,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:28:32,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:28:32,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:28:32,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:28:32,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:28:32,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:28:32,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:28:32,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:28:32,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:28:32,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:28:32,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:28:32,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:28:32,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:28:32,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:28:32,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:28:32,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:28:32,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:28:32,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:28:32,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:28:32,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:28:32,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:28:32,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:28:32,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:28:32,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:28:32,042 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 [2020-09-25 05:28:32,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:28:32,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:28:32,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:28:32,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:28:32,096 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:28:32,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:28:32,097 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:28:32,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:28:32,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:28:32,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:28:32,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:28:32,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:28:32,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:28:32,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:28:32,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:28:32,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:28:32,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:28:32,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:28:32,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:28:32,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:28:32,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:28:32,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:28:32,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:28:32,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:28:32,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:28:32,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:28:32,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:28:32,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:28:32,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:28:32,103 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 -> SingleStatement 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=WIDESTAMONGSMALL;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:28:32,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:28:32,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:28:32,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:28:32,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:28:32,600 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:28:32,601 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b2_o3.c [2020-09-25 05:28:32,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36795d5bf/0d58aa3894ad4ed5aa31a4417b24efaf/FLAGaf585facf [2020-09-25 05:28:33,228 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:28:33,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b2_o3.c [2020-09-25 05:28:33,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36795d5bf/0d58aa3894ad4ed5aa31a4417b24efaf/FLAGaf585facf [2020-09-25 05:28:33,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36795d5bf/0d58aa3894ad4ed5aa31a4417b24efaf [2020-09-25 05:28:33,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:28:33,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:28:33,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:28:33,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:28:33,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:28:33,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:28:33" (1/1) ... [2020-09-25 05:28:33,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd8ad23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:28:33, skipping insertion in model container [2020-09-25 05:28:33,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:28:33" (1/1) ... [2020-09-25 05:28:33,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:28:33,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:28:33,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:28:33,859 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:28:33,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:28:33,891 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:28:33,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:28:33 WrapperNode [2020-09-25 05:28:33,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:28:33,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:28:33,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:28:33,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:28:33,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:28:33" (1/1) ... [2020-09-25 05:28:33,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:28:33" (1/1) ... [2020-09-25 05:28:33,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:28:33" (1/1) ... [2020-09-25 05:28:33,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:28:33" (1/1) ... [2020-09-25 05:28:33,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:28:33" (1/1) ... [2020-09-25 05:28:33,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:28:33" (1/1) ... [2020-09-25 05:28:33,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:28:33" (1/1) ... [2020-09-25 05:28:33,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:28:33,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:28:33,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:28:33,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:28:33,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:28:33" (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 [2020-09-25 05:28:34,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:28:34,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:28:34,087 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 05:28:34,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:28:34,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 05:28:34,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:28:34,088 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 05:28:34,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:28:34,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:28:34,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:28:34,297 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:28:34,297 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:28:34,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:28:34 BoogieIcfgContainer [2020-09-25 05:28:34,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:28:34,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:28:34,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:28:34,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:28:34,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:28:33" (1/3) ... [2020-09-25 05:28:34,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6e7e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:28:34, skipping insertion in model container [2020-09-25 05:28:34,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:28:33" (2/3) ... [2020-09-25 05:28:34,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6e7e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:28:34, skipping insertion in model container [2020-09-25 05:28:34,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:28:34" (3/3) ... [2020-09-25 05:28:34,345 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b2_o3.c [2020-09-25 05:28:34,378 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:28:34,399 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:28:34,425 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:28:34,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:28:34,459 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:28:34,459 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:28:34,459 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:28:34,459 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:28:34,460 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:28:34,460 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:28:34,460 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:28:34,480 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 05:28:34,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 05:28:34,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:28:34,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:28:34,488 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:28:34,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:28:34,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1920796714, now seen corresponding path program 1 times [2020-09-25 05:28:34,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:28:34,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988228035] [2020-09-25 05:28:34,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:28:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:34,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:34,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:34,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:28:34,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:34,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 05:28:34,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:34,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:34,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:28:34,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:28:34,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:28:34,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:28:34,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:28:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:34,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:34,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:34,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:28:34,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:34,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:28:34,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:34,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:34,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:34,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:34,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:28:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:34,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:34,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:34,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:34,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:34,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:28:34,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:34,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:34,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:28:34,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:34,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:28:34,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:28:34,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988228035] [2020-09-25 05:28:34,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:28:34,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:28:34,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962313171] [2020-09-25 05:28:34,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:28:34,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:28:34,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:28:34,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:28:34,904 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-25 05:28:34,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:28:34,988 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-09-25 05:28:34,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:28:34,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 05:28:34,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:28:35,003 INFO L225 Difference]: With dead ends: 40 [2020-09-25 05:28:35,003 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 05:28:35,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:28:35,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 05:28:35,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 05:28:35,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 05:28:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-09-25 05:28:35,060 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 16 [2020-09-25 05:28:35,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:28:35,060 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-09-25 05:28:35,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:28:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-09-25 05:28:35,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 05:28:35,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:28:35,063 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:28:35,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:28:35,064 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:28:35,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:28:35,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1151880470, now seen corresponding path program 1 times [2020-09-25 05:28:35,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:28:35,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368708546] [2020-09-25 05:28:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:28:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:35,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:35,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:35,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:35,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:28:35,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:28:35,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-09-25 05:28:35,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:35,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:35,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:28:35,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 05:28:35,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 05:28:35,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:28:35,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:28:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:35,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:35,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:35,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:28:35,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:35,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:28:35,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:35,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:35,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:35,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 05:28:35,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:28:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:35,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:35,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:35,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:28:35,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:35,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 05:28:35,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:35,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:35,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:28:35,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:35,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:28:35,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:35,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 05:28:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:35,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:35,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:35,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:35,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:35,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:28:35,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:35,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:28:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:28:35,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 05:28:35,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368708546] [2020-09-25 05:28:35,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:28:35,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:28:35,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891903251] [2020-09-25 05:28:35,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:28:35,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:28:35,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:28:35,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:28:35,974 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 8 states. [2020-09-25 05:28:36,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:28:36,115 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-09-25 05:28:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:28:36,116 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-25 05:28:36,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:28:36,117 INFO L225 Difference]: With dead ends: 46 [2020-09-25 05:28:36,117 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 05:28:36,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:28:36,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 05:28:36,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 05:28:36,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 05:28:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-09-25 05:28:36,127 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 25 [2020-09-25 05:28:36,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:28:36,127 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-09-25 05:28:36,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:28:36,128 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-09-25 05:28:36,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 05:28:36,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:28:36,130 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:28:36,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:28:36,130 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:28:36,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:28:36,131 INFO L82 PathProgramCache]: Analyzing trace with hash 860037162, now seen corresponding path program 2 times [2020-09-25 05:28:36,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:28:36,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675658594] [2020-09-25 05:28:36,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:28:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:36,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:36,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:36,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:36,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 05:28:36,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:28:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-09-25 05:28:36,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:36,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:28:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:28:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:28:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:28:36,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:28:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:36,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:36,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:36,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:28:36,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:36,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:28:36,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:36,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:36,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:36,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:36,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 05:28:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:36,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:36,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:36,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:28:36,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:28:36,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 05:28:36,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:36,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:36,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:28:36,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:36,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:28:36,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:36,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 05:28:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:36,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:36,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:36,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:28:36,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:36,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:28:36,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:36,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:36,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:36,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:36,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:36,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:36,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 05:28:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:28:36,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:28:36,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:28:36,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:28:36,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:28:36,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:28:36,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:28:36,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:28:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:28:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:28:36,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:28:36,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:28:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 05:28:36,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675658594] [2020-09-25 05:28:36,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:28:36,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:28:36,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212041010] [2020-09-25 05:28:36,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:28:36,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:28:36,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:28:36,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:28:36,766 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2020-09-25 05:28:36,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:28:36,815 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-09-25 05:28:36,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:28:36,816 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-25 05:28:36,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:28:36,817 INFO L225 Difference]: With dead ends: 33 [2020-09-25 05:28:36,817 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:28:36,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:28:36,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:28:36,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:28:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:28:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:28:36,819 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-09-25 05:28:36,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:28:36,819 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:28:36,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:28:36,820 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:28:36,820 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:28:36,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:28:36,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 05:28:36,874 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 05:28:36,874 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:28:36,875 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:28:36,875 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 05:28:36,875 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 05:28:36,875 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:28:36,875 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-09-25 05:28:36,876 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-09-25 05:28:36,876 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2020-09-25 05:28:36,876 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 05:28:36,876 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-09-25 05:28:36,876 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-09-25 05:28:36,876 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 05:28:36,877 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-25 05:28:36,877 INFO L268 CegarLoopResult]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2020-09-25 05:28:36,877 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-25 05:28:36,877 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2020-09-25 05:28:36,877 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-25 05:28:36,877 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-09-25 05:28:36,877 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 05:28:36,878 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 05:28:36,878 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-09-25 05:28:36,878 INFO L268 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-09-25 05:28:36,878 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 05:28:36,878 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 05:28:36,878 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 05:28:36,879 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-09-25 05:28:36,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:28:36 BoogieIcfgContainer [2020-09-25 05:28:36,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:28:36,895 INFO L168 Benchmark]: Toolchain (without parser) took 3305.97 ms. Allocated memory was 147.3 MB in the beginning and 234.4 MB in the end (delta: 87.0 MB). Free memory was 104.2 MB in the beginning and 112.9 MB in the end (delta: -8.7 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:28:36,896 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 05:28:36,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.48 ms. Allocated memory is still 147.3 MB. Free memory was 103.6 MB in the beginning and 93.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-25 05:28:36,897 INFO L168 Benchmark]: Boogie Preprocessor took 29.28 ms. Allocated memory is still 147.3 MB. Free memory was 93.9 MB in the beginning and 92.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:28:36,899 INFO L168 Benchmark]: RCFGBuilder took 380.68 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.5 MB in the beginning and 172.0 MB in the end (delta: -79.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 05:28:36,900 INFO L168 Benchmark]: TraceAbstraction took 2583.96 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 171.3 MB in the beginning and 112.9 MB in the end (delta: 58.4 MB). Peak memory consumption was 88.8 MB. Max. memory is 7.1 GB. [2020-09-25 05:28:36,904 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 301.48 ms. Allocated memory is still 147.3 MB. Free memory was 103.6 MB in the beginning and 93.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.28 ms. Allocated memory is still 147.3 MB. Free memory was 93.9 MB in the beginning and 92.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 380.68 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.5 MB in the beginning and 172.0 MB in the end (delta: -79.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2583.96 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 171.3 MB in the beginning and 112.9 MB in the end (delta: 58.4 MB). Peak memory consumption was 88.8 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, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 10 SDslu, 282 SDs, 0 SdLazy, 57 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, 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, 0 StatesRemovedByMinimization, 0 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, 1.7s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 5460 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 19/21 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...