/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/trex01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-28 03:46:36,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-28 03:46:36,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-28 03:46:36,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-28 03:46:36,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-28 03:46:36,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-28 03:46:36,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-28 03:46:36,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-28 03:46:36,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-28 03:46:36,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-28 03:46:36,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-28 03:46:36,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-28 03:46:36,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-28 03:46:36,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-28 03:46:36,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-28 03:46:36,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-28 03:46:36,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-28 03:46:36,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-28 03:46:36,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-28 03:46:36,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-28 03:46:36,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-28 03:46:36,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-28 03:46:36,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-28 03:46:36,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-28 03:46:36,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-28 03:46:36,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-28 03:46:36,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-28 03:46:36,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-28 03:46:36,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-28 03:46:36,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-28 03:46:36,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-28 03:46:36,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-28 03:46:36,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-28 03:46:36,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-28 03:46:36,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-28 03:46:36,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-28 03:46:36,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-28 03:46:36,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-28 03:46:36,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-28 03:46:36,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-28 03:46:36,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-28 03:46:36,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-28 03:46:36,565 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-28 03:46:36,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-28 03:46:36,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-28 03:46:36,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-28 03:46:36,568 INFO L138 SettingsManager]: * Use SBE=true [2020-08-28 03:46:36,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-28 03:46:36,569 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-28 03:46:36,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-28 03:46:36,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-28 03:46:36,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-28 03:46:36,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-28 03:46:36,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-28 03:46:36,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-28 03:46:36,572 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-28 03:46:36,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-28 03:46:36,572 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-28 03:46:36,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-28 03:46:36,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-28 03:46:36,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-28 03:46:36,573 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-28 03:46:36,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-28 03:46:36,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-28 03:46:36,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-28 03:46:36,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-28 03:46:36,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-28 03:46:36,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-28 03:46:36,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-28 03:46:36,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-28 03:46:36,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-28 03:46:36,575 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-28 03:46:37,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-28 03:46:37,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-28 03:46:37,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-28 03:46:37,141 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-28 03:46:37,142 INFO L275 PluginConnector]: CDTParser initialized [2020-08-28 03:46:37,143 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-1.c [2020-08-28 03:46:37,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6ca7c901/024fbb7253d84463be0631e85d7b5bf2/FLAG01f1ba7ae [2020-08-28 03:46:37,776 INFO L306 CDTParser]: Found 1 translation units. [2020-08-28 03:46:37,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/trex01-1.c [2020-08-28 03:46:37,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6ca7c901/024fbb7253d84463be0631e85d7b5bf2/FLAG01f1ba7ae [2020-08-28 03:46:38,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6ca7c901/024fbb7253d84463be0631e85d7b5bf2 [2020-08-28 03:46:38,157 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-28 03:46:38,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-28 03:46:38,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-28 03:46:38,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-28 03:46:38,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-28 03:46:38,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 03:46:38" (1/1) ... [2020-08-28 03:46:38,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570ad94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:46:38, skipping insertion in model container [2020-08-28 03:46:38,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 03:46:38" (1/1) ... [2020-08-28 03:46:38,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-28 03:46:38,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-28 03:46:38,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 03:46:38,477 INFO L203 MainTranslator]: Completed pre-run [2020-08-28 03:46:38,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 03:46:38,519 INFO L208 MainTranslator]: Completed translation [2020-08-28 03:46:38,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:46:38 WrapperNode [2020-08-28 03:46:38,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-28 03:46:38,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-28 03:46:38,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-28 03:46:38,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-28 03:46:38,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:46:38" (1/1) ... [2020-08-28 03:46:38,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:46:38" (1/1) ... [2020-08-28 03:46:38,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:46:38" (1/1) ... [2020-08-28 03:46:38,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:46:38" (1/1) ... [2020-08-28 03:46:38,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:46:38" (1/1) ... [2020-08-28 03:46:38,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:46:38" (1/1) ... [2020-08-28 03:46:38,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:46:38" (1/1) ... [2020-08-28 03:46:38,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-28 03:46:38,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-28 03:46:38,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-28 03:46:38,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-28 03:46:38,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:46:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-28 03:46:38,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-28 03:46:38,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-28 03:46:38,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-28 03:46:38,804 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-08-28 03:46:38,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-28 03:46:38,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-28 03:46:38,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-28 03:46:38,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-28 03:46:38,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-28 03:46:38,805 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-08-28 03:46:38,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-28 03:46:38,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-28 03:46:38,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-28 03:46:39,042 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-28 03:46:39,042 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-28 03:46:39,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 03:46:39 BoogieIcfgContainer [2020-08-28 03:46:39,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-28 03:46:39,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-28 03:46:39,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-28 03:46:39,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-28 03:46:39,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 03:46:38" (1/3) ... [2020-08-28 03:46:39,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ccb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 03:46:39, skipping insertion in model container [2020-08-28 03:46:39,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 03:46:38" (2/3) ... [2020-08-28 03:46:39,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ccb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 03:46:39, skipping insertion in model container [2020-08-28 03:46:39,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 03:46:39" (3/3) ... [2020-08-28 03:46:39,058 INFO L109 eAbstractionObserver]: Analyzing ICFG trex01-1.c [2020-08-28 03:46:39,071 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-28 03:46:39,091 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-28 03:46:39,150 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-28 03:46:39,193 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-28 03:46:39,193 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-28 03:46:39,194 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-28 03:46:39,194 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-28 03:46:39,194 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-28 03:46:39,194 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-28 03:46:39,194 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-28 03:46:39,194 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-28 03:46:39,215 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-28 03:46:39,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-28 03:46:39,223 INFO L414 BasicCegarLoop]: Found error trace [2020-08-28 03:46:39,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-28 03:46:39,225 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-28 03:46:39,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-28 03:46:39,232 INFO L82 PathProgramCache]: Analyzing trace with hash -355556993, now seen corresponding path program 1 times [2020-08-28 03:46:39,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-28 03:46:39,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200339273] [2020-08-28 03:46:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-28 03:46:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-28 03:46:39,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-28 03:46:39,383 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Proof production must be enabled (you can do this via setOption). at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:211) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:170) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-28 03:46:39,390 INFO L168 Benchmark]: Toolchain (without parser) took 1229.88 ms. Allocated memory was 147.8 MB in the beginning and 207.1 MB in the end (delta: 59.2 MB). Free memory was 104.2 MB in the beginning and 161.0 MB in the end (delta: -56.9 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-28 03:46:39,391 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-28 03:46:39,392 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.19 ms. Allocated memory is still 147.8 MB. Free memory was 104.0 MB in the beginning and 93.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-28 03:46:39,394 INFO L168 Benchmark]: Boogie Preprocessor took 194.67 ms. Allocated memory was 147.8 MB in the beginning and 207.1 MB in the end (delta: 59.2 MB). Free memory was 93.9 MB in the beginning and 185.1 MB in the end (delta: -91.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-28 03:46:39,395 INFO L168 Benchmark]: RCFGBuilder took 330.46 ms. Allocated memory is still 207.1 MB. Free memory was 185.1 MB in the beginning and 171.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-08-28 03:46:39,396 INFO L168 Benchmark]: TraceAbstraction took 337.49 ms. Allocated memory is still 207.1 MB. Free memory was 171.6 MB in the beginning and 161.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-28 03:46:39,400 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 360.19 ms. Allocated memory is still 147.8 MB. Free memory was 104.0 MB in the beginning and 93.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 194.67 ms. Allocated memory was 147.8 MB in the beginning and 207.1 MB in the end (delta: 59.2 MB). Free memory was 93.9 MB in the beginning and 185.1 MB in the end (delta: -91.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 330.46 ms. Allocated memory is still 207.1 MB. Free memory was 185.1 MB in the beginning and 171.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 337.49 ms. Allocated memory is still 207.1 MB. Free memory was 171.6 MB in the beginning and 161.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Proof production must be enabled (you can do this via setOption). de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Proof production must be enabled (you can do this via setOption).: de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...