/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/for_infinite_loop_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:35:35,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:35:35,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:35:35,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:35:35,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:35:35,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:35:35,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:35:35,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:35:35,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:35:35,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:35:35,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:35:35,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:35:35,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:35:35,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:35:35,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:35:35,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:35:35,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:35:35,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:35:35,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:35:35,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:35:35,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:35:35,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:35:35,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:35:35,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:35:35,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:35:35,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:35:35,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:35:35,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:35:35,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:35:35,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:35:35,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:35:35,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:35:35,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:35:35,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:35:35,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:35:35,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:35:35,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:35:35,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:35:35,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:35:35,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:35:35,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:35:35,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 05:35:35,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:35:35,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:35:35,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:35:35,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:35:35,512 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:35:35,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:35:35,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:35:35,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:35:35,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:35:35,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:35:35,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:35:35,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:35:35,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:35:35,514 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:35:35,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:35:35,514 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:35:35,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:35:35,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:35:35,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:35:35,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:35:35,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:35:35,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:35:35,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:35:35,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:35:35,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:35:35,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:35:35,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:35:35,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:35:35,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:35:35,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:35:35,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:35:35,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:35:35,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:35:35,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:35:35,919 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:35:35,920 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_infinite_loop_1.c [2020-10-14 05:35:35,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/469bfa08e/d5f1fbc128b64ba5a3498a5dfcf72114/FLAGa17daa59c [2020-10-14 05:35:36,420 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:35:36,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/for_infinite_loop_1.c [2020-10-14 05:35:36,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/469bfa08e/d5f1fbc128b64ba5a3498a5dfcf72114/FLAGa17daa59c [2020-10-14 05:35:36,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/469bfa08e/d5f1fbc128b64ba5a3498a5dfcf72114 [2020-10-14 05:35:36,824 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:35:36,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:35:36,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:35:36,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:35:36,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:35:36,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:35:36" (1/1) ... [2020-10-14 05:35:36,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445b6256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:36, skipping insertion in model container [2020-10-14 05:35:36,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:35:36" (1/1) ... [2020-10-14 05:35:36,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:35:36,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:35:37,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:35:37,078 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:35:37,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:35:37,111 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:35:37,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:37 WrapperNode [2020-10-14 05:35:37,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:35:37,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:35:37,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:35:37,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:35:37,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:37" (1/1) ... [2020-10-14 05:35:37,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:37" (1/1) ... [2020-10-14 05:35:37,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:37" (1/1) ... [2020-10-14 05:35:37,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:37" (1/1) ... [2020-10-14 05:35:37,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:37" (1/1) ... [2020-10-14 05:35:37,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:37" (1/1) ... [2020-10-14 05:35:37,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:37" (1/1) ... [2020-10-14 05:35:37,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:35:37,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:35:37,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:35:37,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:35:37,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:35:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:35:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:35:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 05:35:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:35:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:35:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:35:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:35:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 05:35:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:35:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:35:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:35:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:35:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:35:37,476 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:35:37,477 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:35:37,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:35:37 BoogieIcfgContainer [2020-10-14 05:35:37,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:35:37,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:35:37,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:35:37,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:35:37,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:35:36" (1/3) ... [2020-10-14 05:35:37,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d00b5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:35:37, skipping insertion in model container [2020-10-14 05:35:37,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:35:37" (2/3) ... [2020-10-14 05:35:37,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d00b5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:35:37, skipping insertion in model container [2020-10-14 05:35:37,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:35:37" (3/3) ... [2020-10-14 05:35:37,489 INFO L109 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_1.c [2020-10-14 05:35:37,501 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:35:37,508 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:35:37,523 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:35:37,543 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:35:37,544 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:35:37,544 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:35:37,544 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:35:37,544 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:35:37,544 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:35:37,544 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:35:37,544 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:35:37,560 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-14 05:35:37,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-14 05:35:37,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:37,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:37,568 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:37,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:37,573 INFO L82 PathProgramCache]: Analyzing trace with hash -253525299, now seen corresponding path program 1 times [2020-10-14 05:35:37,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:37,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345722332] [2020-10-14 05:35:37,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:37,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:37,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:37,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:35:37,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:35:37,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 05:35:37,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:37,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:35:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:37,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:35:37,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:37,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:37,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:37,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:37,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:37,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:35:37,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:37,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:37,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:37,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:35:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:35:37,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345722332] [2020-10-14 05:35:37,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:35:37,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-14 05:35:37,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325307740] [2020-10-14 05:35:37,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-14 05:35:37,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:37,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-14 05:35:37,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 05:35:37,900 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-10-14 05:35:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:37,930 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2020-10-14 05:35:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-14 05:35:37,934 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-14 05:35:37,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:37,947 INFO L225 Difference]: With dead ends: 33 [2020-10-14 05:35:37,947 INFO L226 Difference]: Without dead ends: 15 [2020-10-14 05:35:37,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 05:35:37,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-14 05:35:37,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-14 05:35:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-14 05:35:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-14 05:35:38,000 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2020-10-14 05:35:38,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:38,001 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-14 05:35:38,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-14 05:35:38,002 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-14 05:35:38,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-14 05:35:38,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:35:38,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:35:38,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:35:38,005 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:35:38,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:35:38,005 INFO L82 PathProgramCache]: Analyzing trace with hash -251737839, now seen corresponding path program 1 times [2020-10-14 05:35:38,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:35:38,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338549991] [2020-10-14 05:35:38,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:35:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:38,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:38,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:38,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:35:38,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:38,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 05:35:38,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:38,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:35:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:35:38,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:35:38,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:35:38,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:35:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:35:38,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:35:38,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:35:38,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:35:38,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:35:38,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:35:38,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:35:38,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:35:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:35:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:35:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:35:38,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:35:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:35:38,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338549991] [2020-10-14 05:35:38,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:35:38,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:35:38,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303052402] [2020-10-14 05:35:38,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:35:38,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:35:38,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:35:38,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:35:38,250 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2020-10-14 05:35:38,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:35:38,282 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-10-14 05:35:38,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:35:38,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-14 05:35:38,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:35:38,284 INFO L225 Difference]: With dead ends: 15 [2020-10-14 05:35:38,284 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:35:38,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:35:38,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:35:38,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:35:38,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:35:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:35:38,290 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-14 05:35:38,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:35:38,290 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:35:38,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:35:38,291 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:35:38,291 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:35:38,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:35:38,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:35:38,393 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 05:35:38,393 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:35:38,393 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:35:38,394 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:35:38,394 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:35:38,394 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:35:38,394 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-10-14 05:35:38,394 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-10-14 05:35:38,401 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-10-14 05:35:38,401 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-10-14 05:35:38,402 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 26) the Hoare annotation is: true [2020-10-14 05:35:38,402 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 26) no Hoare annotation was computed. [2020-10-14 05:35:38,402 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (= main_~x~0 0) [2020-10-14 05:35:38,402 INFO L268 CegarLoopResult]: For program point L23-1(lines 21 24) no Hoare annotation was computed. [2020-10-14 05:35:38,402 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-10-14 05:35:38,403 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 24) the Hoare annotation is: (= main_~x~0 0) [2020-10-14 05:35:38,403 INFO L264 CegarLoopResult]: At program point L21-3(lines 21 24) the Hoare annotation is: false [2020-10-14 05:35:38,403 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 26) no Hoare annotation was computed. [2020-10-14 05:35:38,403 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 12) the Hoare annotation is: true [2020-10-14 05:35:38,404 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 7 12) no Hoare annotation was computed. [2020-10-14 05:35:38,404 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-10-14 05:35:38,404 INFO L268 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-10-14 05:35:38,404 INFO L268 CegarLoopResult]: For program point L8-2(lines 7 12) no Hoare annotation was computed. [2020-10-14 05:35:38,405 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-10-14 05:35:38,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:35:38 BoogieIcfgContainer [2020-10-14 05:35:38,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:35:38,434 INFO L168 Benchmark]: Toolchain (without parser) took 1604.08 ms. Allocated memory was 147.8 MB in the beginning and 201.9 MB in the end (delta: 54.0 MB). Free memory was 104.1 MB in the beginning and 121.9 MB in the end (delta: -17.8 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2020-10-14 05:35:38,436 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 05:35:38,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.71 ms. Allocated memory is still 147.8 MB. Free memory was 103.7 MB in the beginning and 93.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-10-14 05:35:38,439 INFO L168 Benchmark]: Boogie Preprocessor took 125.34 ms. Allocated memory was 147.8 MB in the beginning and 201.9 MB in the end (delta: 54.0 MB). Free memory was 93.7 MB in the beginning and 180.6 MB in the end (delta: -86.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-14 05:35:38,441 INFO L168 Benchmark]: RCFGBuilder took 241.52 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 168.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-10-14 05:35:38,443 INFO L168 Benchmark]: TraceAbstraction took 945.72 ms. Allocated memory is still 201.9 MB. Free memory was 167.1 MB in the beginning and 121.9 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2020-10-14 05:35:38,454 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 285.71 ms. Allocated memory is still 147.8 MB. Free memory was 103.7 MB in the beginning and 93.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.34 ms. Allocated memory was 147.8 MB in the beginning and 201.9 MB in the end (delta: 54.0 MB). Free memory was 93.7 MB in the beginning and 180.6 MB in the end (delta: -86.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 241.52 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 168.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 945.72 ms. Allocated memory is still 201.9 MB. Free memory was 167.1 MB in the beginning and 121.9 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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: 21]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 6 SDslu, 23 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 12 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 320 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...