/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gcnr2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:20:35,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:20:35,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:20:35,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:20:35,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:20:35,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:20:35,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:20:35,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:20:35,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:20:35,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:20:35,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:20:35,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:20:35,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:20:35,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:20:35,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:20:35,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:20:35,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:20:35,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:20:35,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:20:35,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:20:35,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:20:35,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:20:35,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:20:35,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:20:35,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:20:35,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:20:35,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:20:35,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:20:35,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:20:35,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:20:35,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:20:35,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:20:35,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:20:35,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:20:35,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:20:35,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:20:35,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:20:35,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:20:35,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:20:35,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:20:35,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:20:35,692 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 [2020-09-25 02:20:35,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:20:35,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:20:35,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:20:35,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:20:35,740 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:20:35,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:20:35,740 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:20:35,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:20:35,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:20:35,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:20:35,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:20:35,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:20:35,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:20:35,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:20:35,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:20:35,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:20:35,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:20:35,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:20:35,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:20:35,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:20:35,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:20:35,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:20:35,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:20:35,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:20:35,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:20:35,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:20:35,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:20:35,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:20:35,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:20:35,746 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:20:36,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:20:36,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:20:36,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:20:36,218 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:20:36,218 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:20:36,219 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gcnr2008.i [2020-09-25 02:20:36,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc23fe397/66f0c84213254b26bc48bc1dabb40089/FLAG888921853 [2020-09-25 02:20:36,884 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:20:36,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gcnr2008.i [2020-09-25 02:20:36,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc23fe397/66f0c84213254b26bc48bc1dabb40089/FLAG888921853 [2020-09-25 02:20:37,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc23fe397/66f0c84213254b26bc48bc1dabb40089 [2020-09-25 02:20:37,237 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:20:37,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:20:37,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:20:37,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:20:37,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:20:37,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:20:37" (1/1) ... [2020-09-25 02:20:37,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8a488b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:37, skipping insertion in model container [2020-09-25 02:20:37,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:20:37" (1/1) ... [2020-09-25 02:20:37,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:20:37,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:20:37,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:20:37,544 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:20:37,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:20:37,587 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:20:37,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:37 WrapperNode [2020-09-25 02:20:37,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:20:37,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:20:37,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:20:37,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:20:37,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:37" (1/1) ... [2020-09-25 02:20:37,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:37" (1/1) ... [2020-09-25 02:20:37,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:37" (1/1) ... [2020-09-25 02:20:37,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:37" (1/1) ... [2020-09-25 02:20:37,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:37" (1/1) ... [2020-09-25 02:20:37,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:37" (1/1) ... [2020-09-25 02:20:37,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:37" (1/1) ... [2020-09-25 02:20:37,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:20:37,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:20:37,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:20:37,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:20:37,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:20:37,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:20:37,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:20:37,808 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:20:37,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:20:37,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:20:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:20:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:20:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:20:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:20:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:20:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:20:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:20:37,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:20:38,072 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:20:38,073 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:20:38,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:20:38 BoogieIcfgContainer [2020-09-25 02:20:38,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:20:38,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:20:38,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:20:38,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:20:38,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:20:37" (1/3) ... [2020-09-25 02:20:38,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad16d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:20:38, skipping insertion in model container [2020-09-25 02:20:38,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:20:37" (2/3) ... [2020-09-25 02:20:38,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ad16d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:20:38, skipping insertion in model container [2020-09-25 02:20:38,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:20:38" (3/3) ... [2020-09-25 02:20:38,092 INFO L109 eAbstractionObserver]: Analyzing ICFG gcnr2008.i [2020-09-25 02:20:38,108 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:20:38,121 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:20:38,145 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:20:38,188 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:20:38,189 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:20:38,189 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:20:38,189 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:20:38,189 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:20:38,189 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:20:38,189 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:20:38,190 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:20:38,221 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 02:20:38,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 02:20:38,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:38,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:20:38,230 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:38,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:38,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1056406919, now seen corresponding path program 1 times [2020-09-25 02:20:38,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:38,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184818502] [2020-09-25 02:20:38,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:38,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:38,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:38,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:20:38,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:38,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 02:20:38,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:20:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:20:38,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:20:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:20:38,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:20:38,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:20:38,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:20:38,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:20:38,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:20:38,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:20:38,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:20:38,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:20:38,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:20:38,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:20:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:20:38,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184818502] [2020-09-25 02:20:38,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:20:38,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 02:20:38,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139883368] [2020-09-25 02:20:38,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 02:20:38,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:20:38,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 02:20:38,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 02:20:38,486 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2020-09-25 02:20:38,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:20:38,518 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-09-25 02:20:38,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 02:20:38,520 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2020-09-25 02:20:38,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:20:38,533 INFO L225 Difference]: With dead ends: 57 [2020-09-25 02:20:38,534 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 02:20:38,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 02:20:38,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 02:20:38,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 02:20:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 02:20:38,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-09-25 02:20:38,593 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 17 [2020-09-25 02:20:38,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:20:38,593 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-09-25 02:20:38,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 02:20:38,593 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-09-25 02:20:38,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 02:20:38,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:20:38,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:20:38,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:20:38,595 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:20:38,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:20:38,596 INFO L82 PathProgramCache]: Analyzing trace with hash -588270500, now seen corresponding path program 1 times [2020-09-25 02:20:38,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:20:38,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410997279] [2020-09-25 02:20:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:20:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:20:38,624 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:20:38,624 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:20:38,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:20:38,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:20:38 BoogieIcfgContainer [2020-09-25 02:20:38,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:20:38,656 INFO L168 Benchmark]: Toolchain (without parser) took 1414.74 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 104.8 MB in the beginning and 143.7 MB in the end (delta: -38.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-09-25 02:20:38,657 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 02:20:38,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.46 ms. Allocated memory is still 148.4 MB. Free memory was 104.1 MB in the beginning and 94.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:20:38,660 INFO L168 Benchmark]: Boogie Preprocessor took 130.53 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 94.6 MB in the beginning and 185.4 MB in the end (delta: -90.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:20:38,661 INFO L168 Benchmark]: RCFGBuilder took 360.93 ms. Allocated memory is still 205.5 MB. Free memory was 185.4 MB in the beginning and 169.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:20:38,662 INFO L168 Benchmark]: TraceAbstraction took 570.00 ms. Allocated memory is still 205.5 MB. Free memory was 168.8 MB in the beginning and 143.7 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-25 02:20:38,666 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 343.46 ms. Allocated memory is still 148.4 MB. Free memory was 104.1 MB in the beginning and 94.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.53 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 94.6 MB in the beginning and 185.4 MB in the end (delta: -90.8 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 360.93 ms. Allocated memory is still 205.5 MB. Free memory was 185.4 MB in the beginning and 169.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 570.00 ms. Allocated memory is still 205.5 MB. Free memory was 168.8 MB in the beginning and 143.7 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int x,y,z,w; [L15] EXPR w = 0 [L15] EXPR z = w = 0 [L15] EXPR y = z = w = 0 [L15] x = y = z = w = 0 [L16] COND FALSE !(__VERIFIER_nondet_int() && y < 10000) [L31] CALL __VERIFIER_assert(x >= 4 && y <= 2) [L7] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred 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, 0.0s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 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...