/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:02:40,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:02:40,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:02:40,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:02:40,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:02:40,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:02:40,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:02:40,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:02:40,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:02:40,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:02:40,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:02:40,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:02:40,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:02:40,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:02:40,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:02:40,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:02:40,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:02:40,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:02:40,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:02:40,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:02:40,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:02:40,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:02:40,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:02:40,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:02:40,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:02:40,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:02:40,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:02:40,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:02:40,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:02:40,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:02:40,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:02:40,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:02:40,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:02:40,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:02:40,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:02:40,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:02:40,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:02:40,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:02:40,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:02:40,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:02:40,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:02:40,907 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 [2020-10-28 15:02:40,955 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:02:40,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:02:40,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:02:40,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:02:40,961 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:02:40,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:02:40,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:02:40,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:02:40,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:02:40,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:02:40,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:02:40,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:02:40,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:02:40,964 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:02:40,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:02:40,964 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:02:40,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:02:40,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:02:40,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:02:40,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:02:40,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:02:40,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:02:40,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:02:40,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:02:40,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:02:40,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:02:40,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:02:40,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:02:40,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:02:40,985 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:02:41,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:02:41,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:02:41,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:02:41,414 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:02:41,415 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:02:41,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2020-10-28 15:02:41,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a54ff890e/f30a5a2a8a284bfdbf84cd290061b8f3/FLAGc6157749c [2020-10-28 15:02:42,092 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:02:42,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2020-10-28 15:02:42,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a54ff890e/f30a5a2a8a284bfdbf84cd290061b8f3/FLAGc6157749c [2020-10-28 15:02:42,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a54ff890e/f30a5a2a8a284bfdbf84cd290061b8f3 [2020-10-28 15:02:42,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:02:42,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:02:42,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:02:42,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:02:42,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:02:42,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:02:42" (1/1) ... [2020-10-28 15:02:42,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a907df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:42, skipping insertion in model container [2020-10-28 15:02:42,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:02:42" (1/1) ... [2020-10-28 15:02:42,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:02:42,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:02:42,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:02:42,794 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:02:42,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:02:42,846 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:02:42,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:42 WrapperNode [2020-10-28 15:02:42,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:02:42,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:02:42,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:02:42,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:02:42,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:42" (1/1) ... [2020-10-28 15:02:42,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:42" (1/1) ... [2020-10-28 15:02:42,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:42" (1/1) ... [2020-10-28 15:02:42,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:42" (1/1) ... [2020-10-28 15:02:42,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:42" (1/1) ... [2020-10-28 15:02:42,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:42" (1/1) ... [2020-10-28 15:02:42,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:42" (1/1) ... [2020-10-28 15:02:42,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:02:42,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:02:42,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:02:42,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:02:42,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:42" (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 [2020-10-28 15:02:42,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:02:42,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:02:43,000 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:02:43,000 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 15:02:43,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:02:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:02:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:02:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:02:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:02:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 15:02:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:02:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 15:02:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:02:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:02:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:02:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:02:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:02:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:02:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:02:43,304 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:02:43,304 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 15:02:43,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:02:43 BoogieIcfgContainer [2020-10-28 15:02:43,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:02:43,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:02:43,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:02:43,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:02:43,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:02:42" (1/3) ... [2020-10-28 15:02:43,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567b0910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:02:43, skipping insertion in model container [2020-10-28 15:02:43,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:02:42" (2/3) ... [2020-10-28 15:02:43,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567b0910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:02:43, skipping insertion in model container [2020-10-28 15:02:43,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:02:43" (3/3) ... [2020-10-28 15:02:43,318 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.p+cfa-reducer.c [2020-10-28 15:02:43,336 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:02:43,343 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:02:43,362 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:02:43,396 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:02:43,396 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:02:43,396 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:02:43,396 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:02:43,396 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:02:43,397 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:02:43,397 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:02:43,397 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:02:43,418 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-28 15:02:43,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-28 15:02:43,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:02:43,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:02:43,431 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:02:43,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:02:43,447 INFO L82 PathProgramCache]: Analyzing trace with hash -268642109, now seen corresponding path program 1 times [2020-10-28 15:02:43,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:02:43,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116803278] [2020-10-28 15:02:43,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:02:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:43,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:43,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:43,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 15:02:43,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:43,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 15:02:43,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:43,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:43,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:02:43,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 15:02:43,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 15:02:43,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 15:02:44,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:02:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:44,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:44,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:44,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:02:44,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:44,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 15:02:44,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:44,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:02:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:02:44,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:02:44,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:02:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:02:44,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116803278] [2020-10-28 15:02:44,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:02:44,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 15:02:44,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993062239] [2020-10-28 15:02:44,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 15:02:44,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:02:44,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 15:02:44,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 15:02:44,123 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-10-28 15:02:44,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:02:44,262 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-10-28 15:02:44,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 15:02:44,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-28 15:02:44,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:02:44,273 INFO L225 Difference]: With dead ends: 31 [2020-10-28 15:02:44,273 INFO L226 Difference]: Without dead ends: 14 [2020-10-28 15:02:44,277 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 [2020-10-28 15:02:44,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-28 15:02:44,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-28 15:02:44,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-28 15:02:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-28 15:02:44,323 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-10-28 15:02:44,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:02:44,324 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-28 15:02:44,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 15:02:44,324 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-28 15:02:44,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 15:02:44,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:02:44,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:02:44,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:02:44,326 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:02:44,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:02:44,327 INFO L82 PathProgramCache]: Analyzing trace with hash 260084366, now seen corresponding path program 1 times [2020-10-28 15:02:44,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:02:44,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367853926] [2020-10-28 15:02:44,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:02:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:44,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:44,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:44,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 15:02:44,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:44,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-28 15:02:44,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:44,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:02:44,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 15:02:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 15:02:44,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:02:44,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:02:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:02:44,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:02:44,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:02:44,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:02:44,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:02:44,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 15:02:44,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:02:44,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:02:44,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:02:44,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:02:44,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:02:44,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 15:02:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:02:44,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367853926] [2020-10-28 15:02:44,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:02:44,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:02:44,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479635840] [2020-10-28 15:02:44,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:02:44,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:02:44,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:02:44,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:02:44,685 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2020-10-28 15:02:44,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:02:44,861 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-10-28 15:02:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 15:02:44,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-28 15:02:44,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:02:44,862 INFO L225 Difference]: With dead ends: 14 [2020-10-28 15:02:44,862 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 15:02:44,863 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 [2020-10-28 15:02:44,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 15:02:44,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 15:02:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 15:02:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 15:02:44,864 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-28 15:02:44,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:02:44,864 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 15:02:44,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:02:44,864 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 15:02:44,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 15:02:44,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:02:44,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 15:02:45,067 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-28 15:02:45,068 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-28 15:02:45,068 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-28 15:02:45,068 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-28 15:02:45,068 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:02:45,069 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)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= ~__return_144~0 |old(~__return_144~0)|)) [2020-10-28 15:02:45,069 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:02:45,069 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:02:45,069 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 15:02:45,069 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 15:02:45,069 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:02:45,070 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-10-28 15:02:45,070 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-28 15:02:45,070 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2020-10-28 15:02:45,070 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-10-28 15:02:45,070 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 13 60) the Hoare annotation is: (= |old(~__return_144~0)| ~__return_144~0) [2020-10-28 15:02:45,070 INFO L274 CegarLoopResult]: For program point L25(lines 25 58) no Hoare annotation was computed. [2020-10-28 15:02:45,070 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 60) no Hoare annotation was computed. [2020-10-28 15:02:45,071 INFO L274 CegarLoopResult]: For program point L19(lines 19 59) no Hoare annotation was computed. [2020-10-28 15:02:45,071 INFO L270 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: false [2020-10-28 15:02:45,071 INFO L274 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed. [2020-10-28 15:02:45,071 INFO L274 CegarLoopResult]: For program point L46(lines 46 55) no Hoare annotation was computed. [2020-10-28 15:02:45,071 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 13 60) no Hoare annotation was computed. [2020-10-28 15:02:45,072 INFO L270 CegarLoopResult]: At program point L37(lines 30 58) the Hoare annotation is: (let ((.cse0 (= |old(~__return_144~0)| ~__return_144~0))) (or (and .cse0 (<= (+ main_~main__x~0 50) 0)) (and (<= (+ main_~main__x~0 2) main_~main__y~0) .cse0))) [2020-10-28 15:02:45,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:02:45 BoogieIcfgContainer [2020-10-28 15:02:45,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:02:45,092 INFO L168 Benchmark]: Toolchain (without parser) took 2614.48 ms. Allocated memory is still 151.0 MB. Free memory was 127.9 MB in the beginning and 76.7 MB in the end (delta: 51.2 MB). Peak memory consumption was 52.8 MB. Max. memory is 8.0 GB. [2020-10-28 15:02:45,093 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:02:45,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.78 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 117.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:02:45,095 INFO L168 Benchmark]: Boogie Preprocessor took 57.80 ms. Allocated memory is still 151.0 MB. Free memory was 117.6 MB in the beginning and 116.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 15:02:45,096 INFO L168 Benchmark]: RCFGBuilder took 397.62 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 103.3 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-28 15:02:45,097 INFO L168 Benchmark]: TraceAbstraction took 1781.01 ms. Allocated memory is still 151.0 MB. Free memory was 102.9 MB in the beginning and 76.7 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.6 MB. Max. memory is 8.0 GB. [2020-10-28 15:02:45,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 360.78 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 117.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.80 ms. Allocated memory is still 151.0 MB. Free memory was 117.6 MB in the beginning and 116.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 397.62 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 103.3 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1781.01 ms. Allocated memory is still 151.0 MB. Free memory was 102.9 MB in the beginning and 76.7 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.6 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_144) == __return_144 && main__x + 50 <= 0) || (main__x + 2 <= main__y && \old(__return_144) == __return_144) - 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, 0.0s 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, 0.1s 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...