/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 SingleStatement --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=SHALLOWEST --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/test29-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:51:34,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:51:34,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:51:34,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:51:34,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:51:34,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:51:34,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:51:34,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:51:35,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:51:35,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:51:35,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:51:35,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:51:35,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:51:35,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:51:35,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:51:35,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:51:35,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:51:35,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:51:35,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:51:35,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:51:35,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:51:35,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:51:35,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:51:35,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:51:35,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:51:35,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:51:35,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:51:35,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:51:35,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:51:35,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:51:35,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:51:35,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:51:35,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:51:35,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:51:35,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:51:35,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:51:35,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:51:35,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:51:35,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:51:35,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:51:35,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:51:35,029 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 [2020-09-24 23:51:35,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:51:35,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:51:35,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:51:35,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:51:35,056 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:51:35,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:51:35,057 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:51:35,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:51:35,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:51:35,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:51:35,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:51:35,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:51:35,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:51:35,058 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:51:35,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:51:35,058 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:51:35,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:51:35,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:51:35,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:51:35,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:51:35,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:51:35,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:51:35,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:51:35,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:51:35,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:51:35,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:51:35,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:51:35,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:51:35,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:51:35,061 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 -> SingleStatement 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=SHALLOWEST;log-additional-information=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=SHALLOWEST;log-additional-information=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=SHALLOWEST;log-additional-information=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=SHALLOWEST;log-additional-information=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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:51:35,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:51:35,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:51:35,564 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:51:35,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:51:35,567 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:51:35,568 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-1.c [2020-09-24 23:51:35,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b3e51ddf/f62dee12ddc045d5ad2d321c810740bf/FLAG34f3e34e7 [2020-09-24 23:51:36,145 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:51:36,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test29-1.c [2020-09-24 23:51:36,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b3e51ddf/f62dee12ddc045d5ad2d321c810740bf/FLAG34f3e34e7 [2020-09-24 23:51:36,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b3e51ddf/f62dee12ddc045d5ad2d321c810740bf [2020-09-24 23:51:36,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:51:36,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:51:36,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:51:36,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:51:36,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:51:36,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36801391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36, skipping insertion in model container [2020-09-24 23:51:36,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:51:36,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:51:36,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:51:36,809 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:51:36,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:51:36,847 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:51:36,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36 WrapperNode [2020-09-24 23:51:36,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:51:36,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:51:36,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:51:36,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:51:36,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:51:36,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:51:36,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:51:36,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:51:36,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (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 [2020-09-24 23:51:37,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:51:37,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:51:37,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:51:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:51:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:51:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:51:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:51:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:51:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:51:37,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:51:37,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:51:37,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:51:37,331 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:51:37,332 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:51:37,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:51:37 BoogieIcfgContainer [2020-09-24 23:51:37,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:51:37,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:51:37,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:51:37,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:51:37,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:51:36" (1/3) ... [2020-09-24 23:51:37,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb03579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:51:37, skipping insertion in model container [2020-09-24 23:51:37,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (2/3) ... [2020-09-24 23:51:37,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb03579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:51:37, skipping insertion in model container [2020-09-24 23:51:37,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:51:37" (3/3) ... [2020-09-24 23:51:37,347 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-1.c [2020-09-24 23:51:37,359 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:51:37,369 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:51:37,393 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:51:37,448 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:51:37,448 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:51:37,449 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:51:37,449 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:51:37,449 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:51:37,450 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:51:37,450 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:51:37,450 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:51:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-09-24 23:51:37,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 23:51:37,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:37,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:37,489 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:37,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:37,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1161029953, now seen corresponding path program 1 times [2020-09-24 23:51:37,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:37,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798449540] [2020-09-24 23:51:37,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:37,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:37,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:38,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:38,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:38,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:51:38,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:51:38,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 734 [2020-09-24 23:51:38,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:38,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:51:38,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:51:38,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:51:38,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:51:38,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:38,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:38,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:38,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:51:38,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:38,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:51:38,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:38,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:51:38,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798449540] [2020-09-24 23:51:38,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:51:38,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 23:51:38,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703680873] [2020-09-24 23:51:38,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:51:38,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:38,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:51:38,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:51:38,590 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 7 states. [2020-09-24 23:51:38,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:38,868 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2020-09-24 23:51:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 23:51:38,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-24 23:51:38,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:38,883 INFO L225 Difference]: With dead ends: 77 [2020-09-24 23:51:38,884 INFO L226 Difference]: Without dead ends: 31 [2020-09-24 23:51:38,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:51:38,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-24 23:51:38,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-24 23:51:38,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-24 23:51:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-09-24 23:51:38,935 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 27 [2020-09-24 23:51:38,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:38,935 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-09-24 23:51:38,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:51:38,936 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-09-24 23:51:38,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 23:51:38,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:38,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:38,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:51:38,938 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:38,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:38,938 INFO L82 PathProgramCache]: Analyzing trace with hash -2120633538, now seen corresponding path program 1 times [2020-09-24 23:51:38,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:38,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641705133] [2020-09-24 23:51:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:51:38,959 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:51:38,959 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:51:38,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:51:38,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:51:38 BoogieIcfgContainer [2020-09-24 23:51:38,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:51:38,989 INFO L168 Benchmark]: Toolchain (without parser) took 2464.27 ms. Allocated memory was 144.7 MB in the beginning and 230.7 MB in the end (delta: 86.0 MB). Free memory was 100.7 MB in the beginning and 192.6 MB in the end (delta: -91.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:51:38,991 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 23:51:38,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.33 ms. Allocated memory is still 144.7 MB. Free memory was 100.1 MB in the beginning and 90.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:38,993 INFO L168 Benchmark]: Boogie Preprocessor took 137.04 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 90.2 MB in the beginning and 178.6 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:38,994 INFO L168 Benchmark]: RCFGBuilder took 351.20 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 161.5 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:38,995 INFO L168 Benchmark]: TraceAbstraction took 1647.66 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 161.5 MB in the beginning and 192.6 MB in the end (delta: -31.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:51:38,999 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.33 ms. Allocated memory is still 144.7 MB. Free memory was 100.1 MB in the beginning and 90.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.04 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 90.2 MB in the beginning and 178.6 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 351.20 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 161.5 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1647.66 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 161.5 MB in the beginning and 192.6 MB in the end (delta: -31.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] union dummy d1, d2; [L14] int n = __VERIFIER_nondet_int(); [L15] EXPR n ? &d1 : &d2 [L15] union dummy *pd = n ? &d1 : &d2; [L16] d1.a = __VERIFIER_nondet_int() [L17] COND FALSE !(pd == &d1) [L20] pd->b = 0 [L22] pd == &d2 && d1.a != 0 [L22] EXPR d1.a [L22] pd == &d2 && d1.a != 0 [L22] COND TRUE pd == &d2 && d1.a != 0 [L28] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 74 SDslu, 79 SDs, 0 SdLazy, 91 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 2080 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 incorrect! Received shutdown request...