/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:44:10,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:44:11,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:44:11,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:44:11,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:44:11,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:44:11,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:44:11,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:44:11,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:44:11,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:44:11,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:44:11,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:44:11,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:44:11,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:44:11,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:44:11,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:44:11,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:44:11,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:44:11,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:44:11,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:44:11,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:44:11,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:44:11,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:44:11,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:44:11,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:44:11,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:44:11,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:44:11,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:44:11,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:44:11,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:44:11,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:44:11,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:44:11,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:44:11,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:44:11,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:44:11,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:44:11,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:44:11,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:44:11,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:44:11,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:44:11,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:44:11,187 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 [2020-10-29 09:44:11,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:44:11,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:44:11,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:44:11,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:44:11,246 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:44:11,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:44:11,247 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:44:11,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:44:11,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:44:11,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:44:11,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:44:11,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:44:11,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:44:11,249 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:44:11,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:44:11,250 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:44:11,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:44:11,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:44:11,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:44:11,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:44:11,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:44:11,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:44:11,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:44:11,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:44:11,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:44:11,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:44:11,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:44:11,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:44:11,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:44:11,252 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:44:11,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:44:11,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:44:11,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:44:11,793 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:44:11,793 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:44:11,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-10-29 09:44:11,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cae6a8dd5/c2a5ddf205714b2a8a6f76b6eb6ca87f/FLAG9c8a1a02b [2020-10-29 09:44:12,605 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:44:12,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-10-29 09:44:12,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cae6a8dd5/c2a5ddf205714b2a8a6f76b6eb6ca87f/FLAG9c8a1a02b [2020-10-29 09:44:12,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cae6a8dd5/c2a5ddf205714b2a8a6f76b6eb6ca87f [2020-10-29 09:44:12,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:44:12,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:44:12,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:44:12,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:44:12,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:44:12,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:44:12" (1/1) ... [2020-10-29 09:44:12,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10358e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:12, skipping insertion in model container [2020-10-29 09:44:12,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:44:12" (1/1) ... [2020-10-29 09:44:12,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:44:13,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:44:13,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:44:13,181 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:44:13,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:44:13,218 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:44:13,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:13 WrapperNode [2020-10-29 09:44:13,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:44:13,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:44:13,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:44:13,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:44:13,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:13" (1/1) ... [2020-10-29 09:44:13,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:13" (1/1) ... [2020-10-29 09:44:13,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:13" (1/1) ... [2020-10-29 09:44:13,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:13" (1/1) ... [2020-10-29 09:44:13,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:13" (1/1) ... [2020-10-29 09:44:13,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:13" (1/1) ... [2020-10-29 09:44:13,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:13" (1/1) ... [2020-10-29 09:44:13,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:44:13,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:44:13,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:44:13,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:44:13,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:13" (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 [2020-10-29 09:44:13,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:44:13,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:44:13,343 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:44:13,344 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:44:13,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:44:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:44:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:44:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:44:13,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:44:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:44:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:44:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:44:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:44:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:44:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:44:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:44:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:44:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:44:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:44:13,681 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:44:13,681 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 09:44:13,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:44:13 BoogieIcfgContainer [2020-10-29 09:44:13,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:44:13,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:44:13,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:44:13,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:44:13,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:44:12" (1/3) ... [2020-10-29 09:44:13,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a3c4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:44:13, skipping insertion in model container [2020-10-29 09:44:13,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:44:13" (2/3) ... [2020-10-29 09:44:13,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a3c4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:44:13, skipping insertion in model container [2020-10-29 09:44:13,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:44:13" (3/3) ... [2020-10-29 09:44:13,706 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2020-10-29 09:44:13,732 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:44:13,737 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:44:13,754 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:44:13,807 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:44:13,808 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:44:13,808 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:44:13,808 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:44:13,808 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:44:13,809 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:44:13,809 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:44:13,809 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:44:13,830 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-29 09:44:13,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 09:44:13,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:44:13,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:44:13,837 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:44:13,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:44:13,845 INFO L82 PathProgramCache]: Analyzing trace with hash -268642109, now seen corresponding path program 1 times [2020-10-29 09:44:13,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:44:13,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318243643] [2020-10-29 09:44:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:44:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:14,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:14,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:14,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:44:14,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-29 09:44:14,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:14,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:14,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:44:14,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:44:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 09:44:14,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:44:14,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:44:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:14,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:14,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:14,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:44:14,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:14,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 09:44:14,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:14,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:14,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:44:14,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:44:14,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:44:14,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:44:14,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:44:14,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318243643] [2020-10-29 09:44:14,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:44:14,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:44:14,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816562046] [2020-10-29 09:44:14,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:44:14,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:44:14,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:44:14,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:44:14,443 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-10-29 09:44:14,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:44:14,581 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-10-29 09:44:14,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:44:14,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-29 09:44:14,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:44:14,593 INFO L225 Difference]: With dead ends: 31 [2020-10-29 09:44:14,593 INFO L226 Difference]: Without dead ends: 14 [2020-10-29 09:44:14,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:44:14,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-29 09:44:14,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-29 09:44:14,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-29 09:44:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-29 09:44:14,646 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-10-29 09:44:14,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:44:14,647 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-29 09:44:14,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:44:14,647 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-29 09:44:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-29 09:44:14,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:44:14,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:44:14,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:44:14,649 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:44:14,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:44:14,650 INFO L82 PathProgramCache]: Analyzing trace with hash 260084366, now seen corresponding path program 1 times [2020-10-29 09:44:14,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:44:14,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728192578] [2020-10-29 09:44:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:44:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:14,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:14,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:44:14,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:14,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 09:44:14,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:14,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:14,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:44:14,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 09:44:14,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 09:44:14,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:44:14,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:44:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:44:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:44:14,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:44:14,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:44:14,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:44:14,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:44:14,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:44:14,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:44:14,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:44:14,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:44:14,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:44:14,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:44:14,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:44:14,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728192578] [2020-10-29 09:44:14,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:44:14,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:44:14,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533615107] [2020-10-29 09:44:14,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:44:14,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:44:14,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:44:14,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:44:15,003 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2020-10-29 09:44:15,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:44:15,192 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-29 09:44:15,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:44:15,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-29 09:44:15,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:44:15,193 INFO L225 Difference]: With dead ends: 14 [2020-10-29 09:44:15,193 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:44:15,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:44:15,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:44:15,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:44:15,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:44:15,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:44:15,196 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-29 09:44:15,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:44:15,196 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:44:15,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:44:15,197 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:44:15,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:44:15,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:44:15,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:44:15,453 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-29 09:44:15,453 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-29 09:44:15,453 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-29 09:44:15,453 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-29 09:44:15,454 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:44:15,454 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= ~__return_65~0 |old(~__return_65~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-29 09:44:15,454 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:44:15,455 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:44:15,455 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 09:44:15,455 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:44:15,455 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:44:15,455 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-10-29 09:44:15,455 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-29 09:44:15,456 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2020-10-29 09:44:15,456 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-10-29 09:44:15,456 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 13 60) the Hoare annotation is: (= |old(~__return_65~0)| ~__return_65~0) [2020-10-29 09:44:15,456 INFO L274 CegarLoopResult]: For program point L25(lines 25 58) no Hoare annotation was computed. [2020-10-29 09:44:15,456 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 60) no Hoare annotation was computed. [2020-10-29 09:44:15,456 INFO L274 CegarLoopResult]: For program point L19(lines 19 59) no Hoare annotation was computed. [2020-10-29 09:44:15,457 INFO L270 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: false [2020-10-29 09:44:15,457 INFO L274 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed. [2020-10-29 09:44:15,457 INFO L274 CegarLoopResult]: For program point L46(lines 46 55) no Hoare annotation was computed. [2020-10-29 09:44:15,457 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 13 60) no Hoare annotation was computed. [2020-10-29 09:44:15,458 INFO L270 CegarLoopResult]: At program point L37(lines 30 58) the Hoare annotation is: (let ((.cse0 (= |old(~__return_65~0)| ~__return_65~0))) (or (and .cse0 (<= (+ main_~main__x~0 50) 0)) (and .cse0 (<= (+ main_~main__x~0 2) main_~main__y~0)))) [2020-10-29 09:44:15,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:44:15 BoogieIcfgContainer [2020-10-29 09:44:15,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:44:15,480 INFO L168 Benchmark]: Toolchain (without parser) took 2520.54 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 136.1 MB in the beginning and 162.0 MB in the end (delta: -25.9 MB). Peak memory consumption was 83.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:44:15,481 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 160.4 MB. Free memory was 132.5 MB in the beginning and 132.4 MB in the end (delta: 102.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:44:15,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.31 ms. Allocated memory is still 160.4 MB. Free memory was 135.5 MB in the beginning and 125.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:44:15,483 INFO L168 Benchmark]: Boogie Preprocessor took 35.66 ms. Allocated memory is still 160.4 MB. Free memory was 125.8 MB in the beginning and 124.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:44:15,484 INFO L168 Benchmark]: RCFGBuilder took 427.29 ms. Allocated memory is still 160.4 MB. Free memory was 124.4 MB in the beginning and 111.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:44:15,485 INFO L168 Benchmark]: TraceAbstraction took 1787.83 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 111.0 MB in the beginning and 162.0 MB in the end (delta: -51.0 MB). Peak memory consumption was 58.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:44:15,489 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 160.4 MB. Free memory was 132.5 MB in the beginning and 132.4 MB in the end (delta: 102.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 253.31 ms. Allocated memory is still 160.4 MB. Free memory was 135.5 MB in the beginning and 125.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.66 ms. Allocated memory is still 160.4 MB. Free memory was 125.8 MB in the beginning and 124.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 427.29 ms. Allocated memory is still 160.4 MB. Free memory was 124.4 MB in the beginning and 111.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1787.83 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 111.0 MB in the beginning and 162.0 MB in the end (delta: -51.0 MB). Peak memory consumption was 58.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 30]: Loop Invariant Derived loop invariant: (\old(__return_65) == __return_65 && main__x + 50 <= 0) || (\old(__return_65) == __return_65 && main__x + 2 <= main__y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 19 SDslu, 21 SDs, 0 SdLazy, 28 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 63 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 100 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1309 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 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...