/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 07:33:43,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 07:33:43,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 07:33:43,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 07:33:43,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 07:33:43,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 07:33:43,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 07:33:43,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 07:33:43,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 07:33:43,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 07:33:43,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 07:33:43,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 07:33:43,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 07:33:43,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 07:33:43,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 07:33:43,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 07:33:43,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 07:33:43,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 07:33:43,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 07:33:43,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 07:33:43,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 07:33:43,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 07:33:43,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 07:33:43,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 07:33:43,920 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 07:33:43,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 07:33:43,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 07:33:43,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 07:33:43,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 07:33:43,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 07:33:43,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 07:33:43,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 07:33:43,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 07:33:43,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 07:33:43,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 07:33:43,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 07:33:43,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 07:33:43,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 07:33:43,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 07:33:43,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 07:33:43,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 07:33:43,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 07:33:43,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 07:33:43,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 07:33:43,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 07:33:43,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 07:33:43,961 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 07:33:43,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 07:33:43,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 07:33:43,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 07:33:43,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 07:33:43,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 07:33:43,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 07:33:43,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 07:33:43,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 07:33:43,962 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 07:33:43,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 07:33:43,963 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 07:33:43,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 07:33:43,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 07:33:43,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 07:33:43,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 07:33:43,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 07:33:43,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:33:43,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 07:33:43,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 07:33:43,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 07:33:43,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 07:33:43,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 07:33:43,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 07:33:43,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 07:33:43,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 07:33:44,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 07:33:44,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 07:33:44,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 07:33:44,289 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 07:33:44,289 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 07:33:44,292 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-10-14 07:33:44,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6294f3f5/43be91e726b84a2985a71d5dd4127c10/FLAG77e26ef34 [2020-10-14 07:33:44,784 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 07:33:44,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-10-14 07:33:44,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6294f3f5/43be91e726b84a2985a71d5dd4127c10/FLAG77e26ef34 [2020-10-14 07:33:45,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6294f3f5/43be91e726b84a2985a71d5dd4127c10 [2020-10-14 07:33:45,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 07:33:45,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 07:33:45,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 07:33:45,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 07:33:45,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 07:33:45,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:33:45" (1/1) ... [2020-10-14 07:33:45,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4700e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:45, skipping insertion in model container [2020-10-14 07:33:45,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:33:45" (1/1) ... [2020-10-14 07:33:45,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 07:33:45,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 07:33:45,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:33:45,379 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 07:33:45,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 07:33:45,411 INFO L208 MainTranslator]: Completed translation [2020-10-14 07:33:45,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:45 WrapperNode [2020-10-14 07:33:45,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 07:33:45,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 07:33:45,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 07:33:45,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 07:33:45,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:45" (1/1) ... [2020-10-14 07:33:45,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:45" (1/1) ... [2020-10-14 07:33:45,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:45" (1/1) ... [2020-10-14 07:33:45,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:45" (1/1) ... [2020-10-14 07:33:45,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:45" (1/1) ... [2020-10-14 07:33:45,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:45" (1/1) ... [2020-10-14 07:33:45,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:45" (1/1) ... [2020-10-14 07:33:45,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 07:33:45,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 07:33:45,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 07:33:45,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 07:33:45,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 07:33:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 07:33:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 07:33:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-14 07:33:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-10-14 07:33:45,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 07:33:45,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 07:33:45,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 07:33:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-14 07:33:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-10-14 07:33:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 07:33:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 07:33:45,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 07:33:45,791 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 07:33:45,791 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 07:33:45,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:33:45 BoogieIcfgContainer [2020-10-14 07:33:45,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 07:33:45,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 07:33:45,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 07:33:45,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 07:33:45,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:33:45" (1/3) ... [2020-10-14 07:33:45,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5feeb94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:33:45, skipping insertion in model container [2020-10-14 07:33:45,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:33:45" (2/3) ... [2020-10-14 07:33:45,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5feeb94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:33:45, skipping insertion in model container [2020-10-14 07:33:45,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:33:45" (3/3) ... [2020-10-14 07:33:45,803 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b2_o3.c [2020-10-14 07:33:45,815 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 07:33:45,822 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 07:33:45,847 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 07:33:45,912 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 07:33:45,912 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 07:33:45,912 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 07:33:45,912 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 07:33:45,913 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 07:33:45,913 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 07:33:45,913 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 07:33:45,913 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 07:33:45,938 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-14 07:33:45,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 07:33:45,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:33:45,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:33:45,951 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:33:45,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:33:45,960 INFO L82 PathProgramCache]: Analyzing trace with hash 128923731, now seen corresponding path program 1 times [2020-10-14 07:33:45,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:33:45,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203067869] [2020-10-14 07:33:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:33:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:33:46,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:33:46,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:33:46,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 07:33:46,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:33:46,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 07:33:46,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:33:46,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:33:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:33:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 07:33:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:33:46,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:33:46,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:33:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:33:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:33:46,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:33:46,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:33:46,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:33:46,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 07:33:46,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:33:46,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:33:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:33:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:33:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:33:46,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:33:46,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 07:33:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:33:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:33:46,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:33:46,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:33:46,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:33:46,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 07:33:46,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:33:46,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:33:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:33:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:33:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:33:46,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:33:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:33:46,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203067869] [2020-10-14 07:33:46,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:33:46,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 07:33:46,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120672486] [2020-10-14 07:33:46,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:33:46,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:33:46,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:33:46,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:33:46,382 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-10-14 07:33:46,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:33:46,437 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-10-14 07:33:46,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:33:46,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-14 07:33:46,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:33:46,450 INFO L225 Difference]: With dead ends: 40 [2020-10-14 07:33:46,451 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 07:33:46,454 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 [2020-10-14 07:33:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 07:33:46,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-14 07:33:46,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 07:33:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-14 07:33:46,504 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2020-10-14 07:33:46,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:33:46,504 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-14 07:33:46,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:33:46,505 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-14 07:33:46,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 07:33:46,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:33:46,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:33:46,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 07:33:46,508 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:33:46,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:33:46,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1945633833, now seen corresponding path program 1 times [2020-10-14 07:33:46,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:33:46,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615060090] [2020-10-14 07:33:46,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:33:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:33:46,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:33:46,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:33:46,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:33:46,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:33:46,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 07:33:46,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-14 07:33:46,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:33:46,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:33:46,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:33:46,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 07:33:46,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:33:46,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 07:33:46,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:33:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:33:46,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:33:46,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:33:46,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:33:46,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:33:46,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:33:46,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:33:46,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:33:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:33:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:33:46,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:33:46,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:33:46,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 07:33:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:33:46,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:33:46,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:33:46,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:33:46,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:33:46,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 07:33:46,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:33:46,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:33:46,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:33:46,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 07:33:46,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:33:46,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:33:47,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 07:33:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:33:47,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:33:47,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:33:47,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:33:47,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:33:47,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 07:33:47,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:33:47,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:33:47,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:33:47,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:33:47,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:33:47,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:33:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:33:47,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615060090] [2020-10-14 07:33:47,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:33:47,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 07:33:47,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520049701] [2020-10-14 07:33:47,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:33:47,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:33:47,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:33:47,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:33:47,077 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2020-10-14 07:33:47,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:33:47,117 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2020-10-14 07:33:47,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:33:47,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-14 07:33:47,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:33:47,120 INFO L225 Difference]: With dead ends: 44 [2020-10-14 07:33:47,120 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 07:33:47,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:33:47,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 07:33:47,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-14 07:33:47,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 07:33:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-14 07:33:47,141 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2020-10-14 07:33:47,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:33:47,142 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-14 07:33:47,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:33:47,142 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-14 07:33:47,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 07:33:47,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 07:33:47,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 07:33:47,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 07:33:47,146 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 07:33:47,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 07:33:47,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1974262984, now seen corresponding path program 1 times [2020-10-14 07:33:47,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 07:33:47,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023713880] [2020-10-14 07:33:47,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 07:33:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:33:47,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:33:47,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:33:47,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 07:33:47,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:33:47,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 07:33:47,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:33:47,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:33:47,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 07:33:47,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 07:33:47,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 07:33:47,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:33:47,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 07:33:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:33:47,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:33:47,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:33:47,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 07:33:47,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:33:47,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 07:33:47,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:33:47,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:33:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:33:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:33:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:33:47,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:33:47,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 07:33:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:33:47,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:33:47,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:33:47,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 07:33:47,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:33:47,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 07:33:47,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:33:47,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:33:47,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 07:33:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:33:47,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 07:33:47,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:33:47,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 07:33:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 07:33:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 07:33:47,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 07:33:47,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 07:33:47,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 07:33:47,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 07:33:47,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 07:33:47,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 07:33:47,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 07:33:47,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 07:33:47,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 07:33:47,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 07:33:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 07:33:47,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023713880] [2020-10-14 07:33:47,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 07:33:47,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 07:33:47,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475795835] [2020-10-14 07:33:47,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 07:33:47,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 07:33:47,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 07:33:47,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 07:33:47,405 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-10-14 07:33:47,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 07:33:47,431 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-10-14 07:33:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 07:33:47,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-14 07:33:47,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 07:33:47,433 INFO L225 Difference]: With dead ends: 30 [2020-10-14 07:33:47,433 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 07:33:47,434 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 [2020-10-14 07:33:47,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 07:33:47,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 07:33:47,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 07:33:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 07:33:47,435 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-14 07:33:47,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 07:33:47,435 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 07:33:47,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 07:33:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 07:33:47,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 07:33:47,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 07:33:47,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 07:33:47,472 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 07:33:47,472 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 07:33:47,473 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-10-14 07:33:47,473 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-10-14 07:33:47,473 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-14 07:33:47,473 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-10-14 07:33:47,473 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2020-10-14 07:33:47,473 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-10-14 07:33:47,474 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2020-10-14 07:33:47,474 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 07:33:47,474 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 07:33:47,474 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 07:33:47,474 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 07:33:47,474 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-10-14 07:33:47,474 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-10-14 07:33:47,475 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-10-14 07:33:47,475 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2020-10-14 07:33:47,476 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-10-14 07:33:47,476 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-10-14 07:33:47,476 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-10-14 07:33:47,476 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2020-10-14 07:33:47,477 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2020-10-14 07:33:47,477 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2020-10-14 07:33:47,477 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-10-14 07:33:47,477 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-10-14 07:33:47,477 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-14 07:33:47,477 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-10-14 07:33:47,478 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-10-14 07:33:47,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 07:33:47 BoogieIcfgContainer [2020-10-14 07:33:47,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 07:33:47,489 INFO L168 Benchmark]: Toolchain (without parser) took 2315.12 ms. Allocated memory was 147.8 MB in the beginning and 232.3 MB in the end (delta: 84.4 MB). Free memory was 104.7 MB in the beginning and 173.0 MB in the end (delta: -68.3 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2020-10-14 07:33:47,490 INFO L168 Benchmark]: CDTParser took 2.05 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 07:33:47,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.59 ms. Allocated memory is still 147.8 MB. Free memory was 104.2 MB in the beginning and 94.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-10-14 07:33:47,493 INFO L168 Benchmark]: Boogie Preprocessor took 128.25 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 94.5 MB in the beginning and 182.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-10-14 07:33:47,494 INFO L168 Benchmark]: RCFGBuilder took 254.21 ms. Allocated memory is still 203.9 MB. Free memory was 182.7 MB in the beginning and 170.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-10-14 07:33:47,501 INFO L168 Benchmark]: TraceAbstraction took 1687.80 ms. Allocated memory was 203.9 MB in the beginning and 232.3 MB in the end (delta: 28.3 MB). Free memory was 169.1 MB in the beginning and 173.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-10-14 07:33:47,511 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.05 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 239.59 ms. Allocated memory is still 147.8 MB. Free memory was 104.2 MB in the beginning and 94.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.25 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 94.5 MB in the beginning and 182.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 254.21 ms. Allocated memory is still 203.9 MB. Free memory was 182.7 MB in the beginning and 170.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1687.80 ms. Allocated memory was 203.9 MB in the beginning and 232.3 MB in the end (delta: 28.3 MB). Free memory was 169.1 MB in the beginning and 173.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 4 SDslu, 235 SDs, 0 SdLazy, 25 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 2494 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...