/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test29-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:43:48,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:43:48,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:43:48,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:43:48,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:43:48,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:43:48,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:43:48,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:43:48,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:43:48,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:43:48,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:43:48,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:43:48,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:43:48,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:43:48,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:43:48,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:43:48,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:43:48,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:43:48,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:43:48,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:43:48,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:43:48,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:43:48,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:43:48,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:43:48,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:43:48,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:43:48,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:43:48,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:43:48,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:43:48,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:43:48,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:43:48,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:43:48,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:43:48,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:43:48,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:43:48,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:43:48,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:43:48,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:43:48,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:43:48,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:43:48,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:43:48,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:43:48,187 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:43:48,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:43:48,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:43:48,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:43:48,191 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:43:48,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:43:48,192 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:43:48,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:43:48,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:43:48,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:43:48,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:43:48,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:43:48,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:43:48,195 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:43:48,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:43:48,196 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:43:48,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:43:48,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:43:48,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:43:48,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:43:48,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:43:48,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:43:48,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:43:48,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:43:48,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:43:48,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:43:48,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:43:48,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:43:48,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:43:48,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:43:48,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:43:48,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:43:48,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:43:48,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:43:48,550 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:43:48,551 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-2.c [2020-10-12 15:43:48,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e81920ac/9e747bdb43d8453b884edb4e3f9f2e70/FLAG98c2018f2 [2020-10-12 15:43:49,057 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:43:49,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test29-2.c [2020-10-12 15:43:49,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e81920ac/9e747bdb43d8453b884edb4e3f9f2e70/FLAG98c2018f2 [2020-10-12 15:43:49,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e81920ac/9e747bdb43d8453b884edb4e3f9f2e70 [2020-10-12 15:43:49,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:43:49,444 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:43:49,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:43:49,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:43:49,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:43:49,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:43:49" (1/1) ... [2020-10-12 15:43:49,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc1a58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:49, skipping insertion in model container [2020-10-12 15:43:49,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:43:49" (1/1) ... [2020-10-12 15:43:49,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:43:49,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:43:49,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:43:49,734 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:43:49,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:43:49,769 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:43:49,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:49 WrapperNode [2020-10-12 15:43:49,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:43:49,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:43:49,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:43:49,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:43:49,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:49" (1/1) ... [2020-10-12 15:43:49,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:49" (1/1) ... [2020-10-12 15:43:49,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:49" (1/1) ... [2020-10-12 15:43:49,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:49" (1/1) ... [2020-10-12 15:43:49,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:49" (1/1) ... [2020-10-12 15:43:49,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:49" (1/1) ... [2020-10-12 15:43:49,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:49" (1/1) ... [2020-10-12 15:43:49,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:43:49,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:43:49,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:43:49,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:43:49,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:43:49,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:43:49,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:43:49,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:43:49,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:43:49,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:43:49,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:43:49,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:43:49,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:43:49,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:43:49,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:43:49,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:43:49,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:43:50,146 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:43:50,146 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 15:43:50,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:43:50 BoogieIcfgContainer [2020-10-12 15:43:50,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:43:50,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:43:50,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:43:50,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:43:50,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:43:49" (1/3) ... [2020-10-12 15:43:50,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78379780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:43:50, skipping insertion in model container [2020-10-12 15:43:50,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:49" (2/3) ... [2020-10-12 15:43:50,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78379780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:43:50, skipping insertion in model container [2020-10-12 15:43:50,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:43:50" (3/3) ... [2020-10-12 15:43:50,159 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-2.c [2020-10-12 15:43:50,169 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:43:50,176 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:43:50,189 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:43:50,213 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:43:50,214 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:43:50,214 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:43:50,214 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:43:50,214 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:43:50,214 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:43:50,214 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:43:50,215 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:43:50,233 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-12 15:43:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-12 15:43:50,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:43:50,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:43:50,240 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:43:50,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:43:50,245 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2020-10-12 15:43:50,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:43:50,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710520859] [2020-10-12 15:43:50,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:43:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:50,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:50,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:50,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:50,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:43:50,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:43:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-12 15:43:50,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:50,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:43:50,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:43:50,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:50,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 15:43:51,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:43:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:51,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:51,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:51,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:51,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:43:51,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:51,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:43:51,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:43:51,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710520859] [2020-10-12 15:43:51,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:43:51,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:43:51,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743940489] [2020-10-12 15:43:51,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:43:51,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:43:51,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:43:51,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:43:51,121 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 7 states. [2020-10-12 15:43:51,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:43:51,316 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2020-10-12 15:43:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:43:51,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-12 15:43:51,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:43:51,329 INFO L225 Difference]: With dead ends: 31 [2020-10-12 15:43:51,329 INFO L226 Difference]: Without dead ends: 14 [2020-10-12 15:43:51,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:43:51,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-12 15:43:51,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-12 15:43:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-12 15:43:51,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-10-12 15:43:51,372 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-10-12 15:43:51,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:43:51,373 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-10-12 15:43:51,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:43:51,373 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-10-12 15:43:51,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-12 15:43:51,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:43:51,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:43:51,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:43:51,374 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:43:51,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:43:51,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2020-10-12 15:43:51,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:43:51,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248968361] [2020-10-12 15:43:51,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:43:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:51,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:51,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:51,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:51,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:43:51,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:43:51,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 15:43:51,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:51,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:43:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 15:43:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:51,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:51,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:43:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:51,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:51,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:51,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:51,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:51,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:43:51,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:51,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:51,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:51,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:43:51,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248968361] [2020-10-12 15:43:51,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:43:51,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:43:51,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088885867] [2020-10-12 15:43:51,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:43:51,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:43:51,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:43:51,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:43:51,648 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 7 states. [2020-10-12 15:43:51,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:43:51,772 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-10-12 15:43:51,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:43:51,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-12 15:43:51,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:43:51,773 INFO L225 Difference]: With dead ends: 14 [2020-10-12 15:43:51,774 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 15:43:51,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:43:51,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 15:43:51,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 15:43:51,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 15:43:51,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 15:43:51,776 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-12 15:43:51,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:43:51,777 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 15:43:51,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:43:51,778 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 15:43:51,778 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 15:43:51,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:43:51,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 15:43:51,860 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-12 15:43:51,861 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-12 15:43:51,861 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 15:43:51,863 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 15:43:51,864 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 15:43:51,864 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 15:43:51,864 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 15:43:51,864 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-10-12 15:43:51,865 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-10-12 15:43:51,865 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2020-10-12 15:43:51,865 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-12 15:43:51,865 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-10-12 15:43:51,865 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-10-12 15:43:51,866 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2020-10-12 15:43:51,867 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-10-12 15:43:51,867 INFO L264 CegarLoopResult]: At program point L22(lines 12 29) the Hoare annotation is: false [2020-10-12 15:43:51,867 INFO L268 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2020-10-12 15:43:51,867 INFO L268 CegarLoopResult]: For program point L16-2(lines 16 20) no Hoare annotation was computed. [2020-10-12 15:43:51,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:43:51 BoogieIcfgContainer [2020-10-12 15:43:51,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:43:51,893 INFO L168 Benchmark]: Toolchain (without parser) took 2445.03 ms. Allocated memory was 140.0 MB in the beginning and 236.5 MB in the end (delta: 96.5 MB). Free memory was 103.5 MB in the beginning and 169.2 MB in the end (delta: -65.8 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:43:51,894 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 15:43:51,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.01 ms. Allocated memory is still 140.0 MB. Free memory was 103.2 MB in the beginning and 93.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:43:51,897 INFO L168 Benchmark]: Boogie Preprocessor took 115.20 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 180.1 MB in the end (delta: -86.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:43:51,899 INFO L168 Benchmark]: RCFGBuilder took 264.90 ms. Allocated memory is still 202.4 MB. Free memory was 180.1 MB in the beginning and 166.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-10-12 15:43:51,902 INFO L168 Benchmark]: TraceAbstraction took 1734.75 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 166.0 MB in the beginning and 169.2 MB in the end (delta: -3.3 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. [2020-10-12 15:43:51,916 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 325.01 ms. Allocated memory is still 140.0 MB. Free memory was 103.2 MB in the beginning and 93.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.20 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 180.1 MB in the end (delta: -86.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 264.90 ms. Allocated memory is still 202.4 MB. Free memory was 180.1 MB in the beginning and 166.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1734.75 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 166.0 MB in the beginning and 169.2 MB in the end (delta: -3.3 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 22 SDslu, 57 SDs, 0 SdLazy, 88 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 16 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 960 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...