/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:32:51,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:32:51,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:32:51,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:32:51,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:32:51,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:32:51,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:32:51,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:32:51,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:32:51,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:32:51,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:32:51,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:32:51,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:32:51,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:32:51,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:32:51,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:32:51,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:32:51,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:32:51,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:32:51,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:32:51,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:32:51,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:32:51,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:32:51,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:32:51,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:32:51,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:32:51,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:32:51,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:32:51,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:32:51,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:32:51,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:32:51,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:32:51,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:32:51,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:32:51,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:32:51,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:32:51,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:32:51,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:32:51,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:32:51,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:32:51,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:32:51,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:32:51,404 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:32:51,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:32:51,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:32:51,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:32:51,406 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:32:51,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:32:51,406 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:32:51,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:32:51,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:32:51,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:32:51,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:32:51,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:32:51,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:32:51,408 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:32:51,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:32:51,408 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:32:51,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:32:51,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:32:51,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:32:51,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:32:51,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:32:51,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:32:51,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:32:51,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:32:51,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:32:51,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:32:51,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:32:51,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:32:51,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:32:51,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:32:51,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:32:51,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:32:51,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:32:51,927 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:32:51,928 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:32:51,929 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2020-09-24 19:32:52,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdc2d44a6/817e9c88697d4ea8a7733b3e4e980961/FLAGeebf5c981 [2020-09-24 19:32:52,536 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:32:52,536 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2020-09-24 19:32:52,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdc2d44a6/817e9c88697d4ea8a7733b3e4e980961/FLAGeebf5c981 [2020-09-24 19:32:52,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdc2d44a6/817e9c88697d4ea8a7733b3e4e980961 [2020-09-24 19:32:52,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:32:52,915 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:32:52,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:32:52,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:32:52,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:32:52,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:32:52" (1/1) ... [2020-09-24 19:32:52,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f92d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:52, skipping insertion in model container [2020-09-24 19:32:52,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:32:52" (1/1) ... [2020-09-24 19:32:52,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:32:52,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:32:53,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:32:53,199 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:32:53,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:32:53,245 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:32:53,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53 WrapperNode [2020-09-24 19:32:53,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:32:53,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:32:53,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:32:53,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:32:53,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (1/1) ... [2020-09-24 19:32:53,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (1/1) ... [2020-09-24 19:32:53,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (1/1) ... [2020-09-24 19:32:53,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (1/1) ... [2020-09-24 19:32:53,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (1/1) ... [2020-09-24 19:32:53,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (1/1) ... [2020-09-24 19:32:53,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (1/1) ... [2020-09-24 19:32:53,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:32:53,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:32:53,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:32:53,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:32:53,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:32:53,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:32:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:32:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 19:32:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure printEven [2020-09-24 19:32:53,453 INFO L138 BoogieDeclarations]: Found implementation of procedure printOdd [2020-09-24 19:32:53,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:32:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:32:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:32:53,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 19:32:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure printEven [2020-09-24 19:32:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure printOdd [2020-09-24 19:32:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:32:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:32:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:32:53,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:32:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:32:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:32:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:32:53,800 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:32:53,800 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 19:32:53,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:32:53 BoogieIcfgContainer [2020-09-24 19:32:53,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:32:53,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:32:53,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:32:53,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:32:53,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:32:52" (1/3) ... [2020-09-24 19:32:53,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0583f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:32:53, skipping insertion in model container [2020-09-24 19:32:53,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (2/3) ... [2020-09-24 19:32:53,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0583f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:32:53, skipping insertion in model container [2020-09-24 19:32:53,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:32:53" (3/3) ... [2020-09-24 19:32:53,814 INFO L109 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2020-09-24 19:32:53,823 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:32:53,832 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:32:53,851 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:32:53,876 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:32:53,876 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:32:53,876 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:32:53,876 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:32:53,876 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:32:53,877 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:32:53,877 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:32:53,877 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:32:53,899 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 19:32:53,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 19:32:53,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:32:53,907 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, 1, 1, 1, 1, 1, 1] [2020-09-24 19:32:53,907 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:32:53,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:32:53,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1447674201, now seen corresponding path program 1 times [2020-09-24 19:32:53,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:32:53,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381194460] [2020-09-24 19:32:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:32:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:54,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:54,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:54,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:54,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:32:54,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:32:54,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-09-24 19:32:54,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:32:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:54,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:32:54,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:32:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:54,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:54,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:54,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:32:54,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:54,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:32:54,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:54,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:54,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:54,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:54,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:32:54,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381194460] [2020-09-24 19:32:54,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:32:54,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:32:54,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217428131] [2020-09-24 19:32:54,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:32:54,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:32:54,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:32:54,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:32:54,944 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-24 19:32:55,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:32:55,128 INFO L93 Difference]: Finished difference Result 110 states and 130 transitions. [2020-09-24 19:32:55,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:32:55,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-24 19:32:55,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:32:55,144 INFO L225 Difference]: With dead ends: 110 [2020-09-24 19:32:55,144 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 19:32:55,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:32:55,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 19:32:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 19:32:55,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 19:32:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-09-24 19:32:55,224 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 26 [2020-09-24 19:32:55,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:32:55,225 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-09-24 19:32:55,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:32:55,225 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-09-24 19:32:55,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 19:32:55,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:32:55,228 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, 1, 1, 1, 1, 1, 1] [2020-09-24 19:32:55,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:32:55,229 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:32:55,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:32:55,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1779758876, now seen corresponding path program 1 times [2020-09-24 19:32:55,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:32:55,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328638062] [2020-09-24 19:32:55,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:32:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:55,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:55,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:55,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:55,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:32:55,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:32:55,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-09-24 19:32:55,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:32:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:32:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:32:55,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:56,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:32:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:56,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:56,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:32:56,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:56,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:32:56,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:56,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:56,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:56,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:56,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:32:56,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328638062] [2020-09-24 19:32:56,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:32:56,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:32:56,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324577328] [2020-09-24 19:32:56,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:32:56,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:32:56,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:32:56,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:32:56,047 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 6 states. [2020-09-24 19:32:56,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:32:56,365 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2020-09-24 19:32:56,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:32:56,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-24 19:32:56,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:32:56,369 INFO L225 Difference]: With dead ends: 125 [2020-09-24 19:32:56,369 INFO L226 Difference]: Without dead ends: 84 [2020-09-24 19:32:56,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:32:56,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-24 19:32:56,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 60. [2020-09-24 19:32:56,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 19:32:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-09-24 19:32:56,400 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 26 [2020-09-24 19:32:56,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:32:56,401 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-09-24 19:32:56,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:32:56,401 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-09-24 19:32:56,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 19:32:56,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:32:56,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:32:56,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:32:56,406 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:32:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:32:56,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1567937856, now seen corresponding path program 1 times [2020-09-24 19:32:56,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:32:56,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312394426] [2020-09-24 19:32:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:32:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:56,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:56,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:56,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 19:32:56,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:56,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-24 19:32:56,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:32:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 19:32:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:32:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:56,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:32:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:56,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:56,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:56,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:32:56,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:56,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:32:56,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:56,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:56,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:56,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:56,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:32:56,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312394426] [2020-09-24 19:32:56,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:32:56,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 19:32:56,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797131420] [2020-09-24 19:32:56,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 19:32:56,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:32:56,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 19:32:56,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:32:56,912 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 10 states. [2020-09-24 19:32:57,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:32:57,348 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-09-24 19:32:57,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:32:57,349 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-09-24 19:32:57,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:32:57,350 INFO L225 Difference]: With dead ends: 68 [2020-09-24 19:32:57,350 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 19:32:57,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:32:57,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 19:32:57,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-09-24 19:32:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-24 19:32:57,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-09-24 19:32:57,360 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 33 [2020-09-24 19:32:57,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:32:57,361 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-09-24 19:32:57,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 19:32:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-09-24 19:32:57,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 19:32:57,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:32:57,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:32:57,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:32:57,363 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:32:57,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:32:57,364 INFO L82 PathProgramCache]: Analyzing trace with hash -741681537, now seen corresponding path program 1 times [2020-09-24 19:32:57,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:32:57,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395961458] [2020-09-24 19:32:57,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:32:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:57,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:57,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:57,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:58,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 19:32:58,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:32:58,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:32:58,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:32:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 19:32:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:32:58,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:32:58,597 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 7 [2020-09-24 19:32:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:32:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:58,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:58,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:32:58,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:58,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 19:32:58,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:58,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:58,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:58,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:58,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:32:58,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 19:32:58,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395961458] [2020-09-24 19:32:58,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:32:58,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 19:32:58,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961143112] [2020-09-24 19:32:58,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 19:32:58,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:32:58,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 19:32:58,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:32:58,665 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 10 states. [2020-09-24 19:32:59,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:32:59,030 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-09-24 19:32:59,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:32:59,031 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-09-24 19:32:59,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:32:59,031 INFO L225 Difference]: With dead ends: 66 [2020-09-24 19:32:59,031 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:32:59,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:32:59,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:32:59,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:32:59,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:32:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:32:59,033 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-09-24 19:32:59,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:32:59,034 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:32:59,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 19:32:59,034 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:32:59,034 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:32:59,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:32:59,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:32:59,185 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 19:32:59,185 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 19:32:59,185 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:32:59,186 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|)) [2020-09-24 19:32:59,186 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:32:59,186 INFO L271 CegarLoopResult]: At program point printOddENTRY(lines 7 9) the Hoare annotation is: true [2020-09-24 19:32:59,187 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (or (not (let ((.cse0 (+ |printOdd_#in~i| 1))) (<= .cse0 (* 2 (div .cse0 2))))) (<= (+ (* 2 (div printOdd_~i 2)) 1) printOdd_~i)) [2020-09-24 19:32:59,187 INFO L268 CegarLoopResult]: For program point printOddFINAL(lines 7 9) no Hoare annotation was computed. [2020-09-24 19:32:59,187 INFO L268 CegarLoopResult]: For program point printOddEXIT(lines 7 9) no Hoare annotation was computed. [2020-09-24 19:32:59,187 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:32:59,187 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 19:32:59,187 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 19:32:59,188 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:32:59,188 INFO L268 CegarLoopResult]: For program point printEvenEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-24 19:32:59,188 INFO L271 CegarLoopResult]: At program point printEvenENTRY(lines 4 6) the Hoare annotation is: true [2020-09-24 19:32:59,188 INFO L268 CegarLoopResult]: For program point printEvenFINAL(lines 4 6) no Hoare annotation was computed. [2020-09-24 19:32:59,188 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (or (not (<= 0 (+ (* 2 (div (* |printEven_#in~i| (- 1)) 2)) |printEven_#in~i|))) (<= printEven_~i (* 2 (div printEven_~i 2)))) [2020-09-24 19:32:59,189 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 36) no Hoare annotation was computed. [2020-09-24 19:32:59,189 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 19:32:59,189 INFO L268 CegarLoopResult]: For program point L23-1(lines 23 26) no Hoare annotation was computed. [2020-09-24 19:32:59,189 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 19:32:59,189 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 19:32:59,189 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 19:32:59,190 INFO L264 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: (and (let ((.cse0 (+ (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)) 1))) (<= .cse0 (* 2 (div .cse0 2)))) (let ((.cse1 (+ |main_#t~mem8| 1))) (<= .cse1 (* 2 (div .cse1 2))))) [2020-09-24 19:32:59,190 INFO L268 CegarLoopResult]: For program point L32-2(line 32) no Hoare annotation was computed. [2020-09-24 19:32:59,190 INFO L268 CegarLoopResult]: For program point L28-2(lines 28 34) no Hoare annotation was computed. [2020-09-24 19:32:59,190 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-24 19:32:59,190 INFO L268 CegarLoopResult]: For program point L28-4(line 28) no Hoare annotation was computed. [2020-09-24 19:32:59,191 INFO L271 CegarLoopResult]: At program point L28-5(lines 28 34) the Hoare annotation is: true [2020-09-24 19:32:59,191 INFO L268 CegarLoopResult]: For program point L28-6(lines 28 34) no Hoare annotation was computed. [2020-09-24 19:32:59,191 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 19:32:59,191 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2020-09-24 19:32:59,191 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 19:32:59,191 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-24 19:32:59,191 INFO L268 CegarLoopResult]: For program point L16-5(line 16) no Hoare annotation was computed. [2020-09-24 19:32:59,192 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 19:32:59,192 INFO L271 CegarLoopResult]: At program point L16-6(lines 16 19) the Hoare annotation is: true [2020-09-24 19:32:59,192 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 19:32:59,192 INFO L268 CegarLoopResult]: For program point L16-7(lines 16 19) no Hoare annotation was computed. [2020-09-24 19:32:59,192 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 19:32:59,192 INFO L264 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: (and (<= 0 (+ (* 2 (div (* |main_#t~mem5| (- 1)) 2)) |main_#t~mem5|)) (<= 0 (let ((.cse0 (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)))) (+ .cse0 (* 2 (div (* .cse0 (- 1)) 2)))))) [2020-09-24 19:32:59,193 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 19:32:59,193 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2020-09-24 19:32:59,193 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-24 19:32:59,193 INFO L268 CegarLoopResult]: For program point L21-4(line 21) no Hoare annotation was computed. [2020-09-24 19:32:59,193 INFO L271 CegarLoopResult]: At program point L21-5(lines 21 27) the Hoare annotation is: true [2020-09-24 19:32:59,193 INFO L268 CegarLoopResult]: For program point L21-6(lines 21 27) no Hoare annotation was computed. [2020-09-24 19:32:59,194 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 36) no Hoare annotation was computed. [2020-09-24 19:32:59,194 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 19:32:59,194 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 36) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 19:32:59,194 INFO L268 CegarLoopResult]: For program point L30-1(lines 30 33) no Hoare annotation was computed. [2020-09-24 19:32:59,194 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-24 19:32:59,194 INFO L268 CegarLoopResult]: For program point L30-4(line 30) no Hoare annotation was computed. [2020-09-24 19:32:59,195 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 19:32:59,195 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 19:32:59,195 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 19:32:59,195 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 19:32:59,195 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 19:32:59,195 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-24 19:32:59,196 INFO L268 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-09-24 19:32:59,196 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2020-09-24 19:32:59,196 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2020-09-24 19:32:59,196 INFO L268 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-09-24 19:32:59,196 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-09-24 19:32:59,197 INFO L268 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-09-24 19:32:59,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:32:59 BoogieIcfgContainer [2020-09-24 19:32:59,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:32:59,212 INFO L168 Benchmark]: Toolchain (without parser) took 6300.67 ms. Allocated memory was 140.5 MB in the beginning and 244.3 MB in the end (delta: 103.8 MB). Free memory was 101.8 MB in the beginning and 107.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 98.2 MB. Max. memory is 7.1 GB. [2020-09-24 19:32:59,213 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:32:59,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.06 ms. Allocated memory is still 140.5 MB. Free memory was 101.1 MB in the beginning and 91.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:32:59,215 INFO L168 Benchmark]: Boogie Preprocessor took 127.92 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 91.1 MB in the beginning and 179.7 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 19:32:59,216 INFO L168 Benchmark]: RCFGBuilder took 432.02 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 161.1 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-09-24 19:32:59,217 INFO L168 Benchmark]: TraceAbstraction took 5402.63 ms. Allocated memory was 202.4 MB in the beginning and 244.3 MB in the end (delta: 41.9 MB). Free memory was 161.1 MB in the beginning and 107.3 MB in the end (delta: 53.7 MB). Peak memory consumption was 95.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:32:59,221 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.06 ms. Allocated memory is still 140.5 MB. Free memory was 101.1 MB in the beginning and 91.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.92 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 91.1 MB in the beginning and 179.7 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 432.02 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 161.1 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5402.63 ms. Allocated memory was 202.4 MB in the beginning and 244.3 MB in the end (delta: 41.9 MB). Free memory was 161.1 MB in the beginning and 107.3 MB in the end (delta: 53.7 MB). Peak memory consumption was 95.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 28]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 225 SDtfs, 92 SDslu, 686 SDs, 0 SdLazy, 611 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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, 4 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 27 PreInvPairs, 35 NumberOfFragments, 141 HoareAnnotationTreeSize, 27 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 151 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 12092 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 3/3 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...