/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 --traceabstraction.use.minimal.unsat.core.enumeration 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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/nested_structure-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:36:51,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:36:51,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:36:51,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:36:51,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:36:51,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:36:51,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:36:51,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:36:51,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:36:51,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:36:51,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:36:51,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:36:51,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:36:51,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:36:51,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:36:51,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:36:51,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:36:51,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:36:51,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:36:51,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:36:51,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:36:51,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:36:51,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:36:51,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:36:51,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:36:51,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:36:51,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:36:51,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:36:51,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:36:51,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 00:36:51,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:36:51,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:36:51,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:36:51,753 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 [2020-08-22 00:36:51,775 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:36:51,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:36:51,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:36:51,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:36:51,777 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:36:51,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:36:51,777 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:36:51,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:36:51,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:36:51,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:36:51,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:36:51,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:36:51,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:36:51,778 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:36:51,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:36:51,779 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:36:51,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:36:51,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:36:51,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:36:51,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:36:51,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:36:51,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:36:51,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:36:51,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:36:51,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:36:51,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:36:51,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:36:51,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:36:51,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:36:51,781 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:36:52,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:36:52,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:36:52,131 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:36:52,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:36:52,134 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:36:52,134 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure-2.i [2020-08-22 00:36:52,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee27702a6/fc4f1019c4a14e87bc2bdc0d989b53fd/FLAGbf5a0ad4b [2020-08-22 00:36:52,697 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:36:52,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/nested_structure-2.i [2020-08-22 00:36:52,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee27702a6/fc4f1019c4a14e87bc2bdc0d989b53fd/FLAGbf5a0ad4b [2020-08-22 00:36:53,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee27702a6/fc4f1019c4a14e87bc2bdc0d989b53fd [2020-08-22 00:36:53,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:36:53,081 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:36:53,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:36:53,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:36:53,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:36:53,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:36:53" (1/1) ... [2020-08-22 00:36:53,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366b14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:53, skipping insertion in model container [2020-08-22 00:36:53,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:36:53" (1/1) ... [2020-08-22 00:36:53,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:36:53,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:36:53,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:36:53,295 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:36:53,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:36:53,331 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:36:53,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:53 WrapperNode [2020-08-22 00:36:53,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:36:53,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:36:53,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:36:53,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:36:53,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:53" (1/1) ... [2020-08-22 00:36:53,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:53" (1/1) ... [2020-08-22 00:36:53,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:53" (1/1) ... [2020-08-22 00:36:53,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:53" (1/1) ... [2020-08-22 00:36:53,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:53" (1/1) ... [2020-08-22 00:36:53,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:53" (1/1) ... [2020-08-22 00:36:53,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:53" (1/1) ... [2020-08-22 00:36:53,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:36:53,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:36:53,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:36:53,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:36:53,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:36:53,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:36:53,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:36:53,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 00:36:53,529 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:36:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:36:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 00:36:53,529 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 00:36:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-08-22 00:36:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-08-22 00:36:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:36:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:36:53,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:36:53,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 00:36:53,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:36:53,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:36:53,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:36:53,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:36:53,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:36:53,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:36:53,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:36:53,780 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:36:53,781 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 00:36:53,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:36:53 BoogieIcfgContainer [2020-08-22 00:36:53,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:36:53,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:36:53,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:36:53,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:36:53,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:36:53" (1/3) ... [2020-08-22 00:36:53,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435b1770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:36:53, skipping insertion in model container [2020-08-22 00:36:53,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:53" (2/3) ... [2020-08-22 00:36:53,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435b1770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:36:53, skipping insertion in model container [2020-08-22 00:36:53,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:36:53" (3/3) ... [2020-08-22 00:36:53,793 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure-2.i [2020-08-22 00:36:53,804 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:36:53,812 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:36:53,827 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:36:53,879 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:36:53,879 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:36:53,880 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:36:53,885 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:36:53,885 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:36:53,885 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:36:53,886 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:36:53,886 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:36:53,931 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-08-22 00:36:53,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-22 00:36:53,944 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:36:53,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:36:53,950 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:36:53,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:36:53,957 INFO L82 PathProgramCache]: Analyzing trace with hash -715594688, now seen corresponding path program 1 times [2020-08-22 00:36:53,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:36:53,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622977645] [2020-08-22 00:36:53,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:36:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:54,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:36:54,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622977645] [2020-08-22 00:36:54,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:36:54,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:36:54,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19616617] [2020-08-22 00:36:54,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:36:54,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:36:54,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:36:54,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:36:54,332 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-08-22 00:36:54,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:36:54,457 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-08-22 00:36:54,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 00:36:54,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-08-22 00:36:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:36:54,467 INFO L225 Difference]: With dead ends: 25 [2020-08-22 00:36:54,467 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 00:36:54,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:36:54,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 00:36:54,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 00:36:54,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 00:36:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 00:36:54,499 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-08-22 00:36:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:36:54,500 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 00:36:54,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:36:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 00:36:54,500 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 00:36:54,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:36:54,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 00:36:54,568 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-22 00:36:54,568 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-22 00:36:54,568 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 00:36:54,569 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 00:36:54,569 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 00:36:54,569 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 00:36:54,569 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 00:36:54,570 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (= |main_#t~mem4| 4) [2020-08-22 00:36:54,570 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-08-22 00:36:54,570 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 27 35) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-22 00:36:54,570 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 27 35) no Hoare annotation was computed. [2020-08-22 00:36:54,570 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 27 35) no Hoare annotation was computed. [2020-08-22 00:36:54,571 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2020-08-22 00:36:54,571 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2020-08-22 00:36:54,571 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2020-08-22 00:36:54,571 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 00:36:54,571 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed. [2020-08-22 00:36:54,572 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-08-22 00:36:54,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:36:54 BoogieIcfgContainer [2020-08-22 00:36:54,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:36:54,582 INFO L168 Benchmark]: Toolchain (without parser) took 1500.18 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 100.8 MB in the beginning and 120.9 MB in the end (delta: -20.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:36:54,583 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 00:36:54,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.40 ms. Allocated memory is still 137.9 MB. Free memory was 100.5 MB in the beginning and 90.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:36:54,585 INFO L168 Benchmark]: Boogie Preprocessor took 119.59 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 90.3 MB in the beginning and 178.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-22 00:36:54,587 INFO L168 Benchmark]: RCFGBuilder took 332.20 ms. Allocated memory is still 200.3 MB. Free memory was 177.3 MB in the beginning and 161.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-08-22 00:36:54,588 INFO L168 Benchmark]: TraceAbstraction took 792.57 ms. Allocated memory is still 200.3 MB. Free memory was 161.3 MB in the beginning and 120.9 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:36:54,592 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.40 ms. Allocated memory is still 137.9 MB. Free memory was 100.5 MB in the beginning and 90.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.59 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 90.3 MB in the beginning and 178.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 332.20 ms. Allocated memory is still 200.3 MB. Free memory was 177.3 MB in the beginning and 161.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 792.57 ms. Allocated memory is still 200.3 MB. Free memory was 161.3 MB in the beginning and 120.9 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 8 SDslu, 29 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 19 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...