/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test21-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:30:18,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:30:18,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:30:18,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:30:18,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:30:18,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:30:18,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:30:18,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:30:18,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:30:18,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:30:18,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:30:18,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:30:18,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:30:18,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:30:18,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:30:18,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:30:18,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:30:18,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:30:18,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:30:18,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:30:18,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:30:18,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:30:18,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:30:18,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:30:18,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 11:30:18,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 11:30:18,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 11:30:18,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 11:30:18,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 11:30:18,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-20 11:30:18,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:30:18,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:30:18,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:30:18,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:30:18,737 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:30:18,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:30:18,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:30:18,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:30:18,739 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:30:18,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:30:18,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:30:18,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:30:18,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:30:18,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:30:18,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:30:18,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:30:18,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:30:18,740 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:30:18,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:30:18,741 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:30:18,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:30:18,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:30:18,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:30:18,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:30:18,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:30:18,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:30:18,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:30:18,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:30:18,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:30:18,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:30:18,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:30:18,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:30:18,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:30:18,744 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:30:19,029 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:30:19,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:30:19,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:30:19,048 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:30:19,048 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:30:19,049 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-2.c [2020-07-20 11:30:19,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78cc9929f/09d6253364994146bd37fbd63917cdca/FLAG61864f67e [2020-07-20 11:30:19,626 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:30:19,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-2.c [2020-07-20 11:30:19,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78cc9929f/09d6253364994146bd37fbd63917cdca/FLAG61864f67e [2020-07-20 11:30:19,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78cc9929f/09d6253364994146bd37fbd63917cdca [2020-07-20 11:30:19,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:30:19,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:30:19,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:30:19,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:30:20,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:30:20,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:30:19" (1/1) ... [2020-07-20 11:30:20,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ce438f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20, skipping insertion in model container [2020-07-20 11:30:20,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:30:19" (1/1) ... [2020-07-20 11:30:20,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:30:20,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:30:20,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:30:20,245 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:30:20,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:30:20,279 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:30:20,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20 WrapperNode [2020-07-20 11:30:20,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:30:20,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:30:20,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:30:20,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:30:20,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ... [2020-07-20 11:30:20,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ... [2020-07-20 11:30:20,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ... [2020-07-20 11:30:20,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ... [2020-07-20 11:30:20,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ... [2020-07-20 11:30:20,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ... [2020-07-20 11:30:20,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ... [2020-07-20 11:30:20,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:30:20,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:30:20,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:30:20,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:30:20,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 11:30:20,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:30:20,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:30:20,471 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-07-20 11:30:20,471 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-07-20 11:30:20,471 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-20 11:30:20,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:30:20,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:30:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:30:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 11:30:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 11:30:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:30:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-07-20 11:30:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 11:30:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:30:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:30:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:30:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:30:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 11:30:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:30:20,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:30:20,738 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:30:20,738 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 11:30:20,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:30:20 BoogieIcfgContainer [2020-07-20 11:30:20,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:30:20,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:30:20,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:30:20,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:30:20,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:30:19" (1/3) ... [2020-07-20 11:30:20,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f74aed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:30:20, skipping insertion in model container [2020-07-20 11:30:20,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (2/3) ... [2020-07-20 11:30:20,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f74aed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:30:20, skipping insertion in model container [2020-07-20 11:30:20,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:30:20" (3/3) ... [2020-07-20 11:30:20,756 INFO L109 eAbstractionObserver]: Analyzing ICFG test21-2.c [2020-07-20 11:30:20,773 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:30:20,782 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:30:20,800 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:30:20,829 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:30:20,829 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:30:20,829 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:30:20,829 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:30:20,830 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:30:20,830 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:30:20,830 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:30:20,830 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:30:20,855 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-07-20 11:30:20,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 11:30:20,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:30:20,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:30:20,865 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:30:20,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:30:20,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1351082661, now seen corresponding path program 1 times [2020-07-20 11:30:20,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:30:20,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792723314] [2020-07-20 11:30:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:30:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:30:21,022 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:30:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:30:21,059 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:30:21,104 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:30:21,105 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:30:21,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:30:21,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:30:21 BoogieIcfgContainer [2020-07-20 11:30:21,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:30:21,370 INFO L168 Benchmark]: Toolchain (without parser) took 1375.48 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 135.2 MB in the end (delta: -33.9 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:21,372 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 136.3 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. [2020-07-20 11:30:21,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.22 ms. Allocated memory is still 136.3 MB. Free memory was 101.1 MB in the beginning and 90.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:21,374 INFO L168 Benchmark]: Boogie Preprocessor took 127.36 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 90.5 MB in the beginning and 178.2 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:21,375 INFO L168 Benchmark]: RCFGBuilder took 336.98 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 161.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:21,376 INFO L168 Benchmark]: TraceAbstraction took 619.74 ms. Allocated memory is still 200.3 MB. Free memory was 160.6 MB in the beginning and 135.2 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:21,381 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 136.3 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 283.22 ms. Allocated memory is still 136.3 MB. Free memory was 101.1 MB in the beginning and 90.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.36 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 90.5 MB in the beginning and 178.2 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.98 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 161.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 619.74 ms. Allocated memory is still 200.3 MB. Free memory was 160.6 MB in the beginning and 135.2 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 42]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; VAL [\old(d1)=9, \old(d1)=11, \old(d2)=7, \old(d2)=6, d1={3:0}, d2={2:0}] [L32] CALL init() VAL [d1={3:0}, d2={2:0}] [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L32] RET init() VAL [d1={3:0}, d2={2:0}] [L33] CALL, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=-256, __VERIFIER_nondet_bool() ? &d1 : &d2={2:0}, d1={3:0}, d2={2:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}, get_dummy()={2:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L33] CALL, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=256, __VERIFIER_nondet_bool() ? &d1 : &d2={2:0}, d1={3:0}, d2={2:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}, get_dummy()={2:0}, pd1={2:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L34] COND TRUE pd1 != 0 && pd1 == pd2 VAL [d1={3:0}, d2={2:0}, pd1={2:0}, pd2={2:0}] [L35] CALL, EXPR check(pd1, pd2) VAL [d1={3:0}, d2={2:0}, s1={2:0}, s2={2:0}] [L27] EXPR s1->a [L27] EXPR s2->b [L27] return s1->a == s2->b; [L35] RET, EXPR check(pd1, pd2) VAL [check(pd1, pd2)=0, d1={3:0}, d2={2:0}, pd1={2:0}, pd2={2:0}] [L35] COND TRUE !check(pd1, pd2) [L42] __VERIFIER_error() VAL [d1={3:0}, d2={2:0}, pd1={2:0}, pd2={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 incorrect! Received shutdown request...