/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-28 06:30:39,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-28 06:30:39,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-28 06:30:39,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-28 06:30:39,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-28 06:30:39,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-28 06:30:39,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-28 06:30:39,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-28 06:30:39,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-28 06:30:39,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-28 06:30:39,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-28 06:30:39,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-28 06:30:39,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-28 06:30:39,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-28 06:30:39,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-28 06:30:39,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-28 06:30:39,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-28 06:30:39,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-28 06:30:39,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-28 06:30:39,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-28 06:30:39,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-28 06:30:39,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-28 06:30:39,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-28 06:30:39,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-28 06:30:39,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-28 06:30:39,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-28 06:30:39,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-28 06:30:39,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-28 06:30:39,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-28 06:30:39,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-28 06:30:39,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-28 06:30:39,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-28 06:30:39,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-28 06:30:39,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-28 06:30:39,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-28 06:30:39,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-28 06:30:39,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-28 06:30:39,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-28 06:30:39,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-28 06:30:39,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-28 06:30:39,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-28 06:30:39,999 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 06:30:40,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-28 06:30:40,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-28 06:30:40,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-28 06:30:40,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-28 06:30:40,043 INFO L138 SettingsManager]: * Use SBE=true [2020-08-28 06:30:40,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-28 06:30:40,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-28 06:30:40,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-28 06:30:40,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-28 06:30:40,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-28 06:30:40,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-28 06:30:40,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-28 06:30:40,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-28 06:30:40,046 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-28 06:30:40,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-28 06:30:40,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-28 06:30:40,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-28 06:30:40,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-28 06:30:40,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-28 06:30:40,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-28 06:30:40,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-28 06:30:40,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-28 06:30:40,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-28 06:30:40,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-28 06:30:40,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-28 06:30:40,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-28 06:30:40,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-28 06:30:40,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-28 06:30:40,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-28 06:30:40,049 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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-28 06:30:40,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-28 06:30:40,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-28 06:30:40,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-28 06:30:40,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-28 06:30:40,583 INFO L275 PluginConnector]: CDTParser initialized [2020-08-28 06:30:40,584 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-08-28 06:30:40,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/758b76ad2/354a0f37e5fa4442b2e21381f05cf1a0/FLAGaa90b5cbc [2020-08-28 06:30:41,316 INFO L306 CDTParser]: Found 1 translation units. [2020-08-28 06:30:41,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-08-28 06:30:41,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/758b76ad2/354a0f37e5fa4442b2e21381f05cf1a0/FLAGaa90b5cbc [2020-08-28 06:30:41,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/758b76ad2/354a0f37e5fa4442b2e21381f05cf1a0 [2020-08-28 06:30:41,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-28 06:30:41,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-28 06:30:41,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-28 06:30:41,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-28 06:30:41,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-28 06:30:41,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:30:41" (1/1) ... [2020-08-28 06:30:41,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a48022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:30:41, skipping insertion in model container [2020-08-28 06:30:41,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:30:41" (1/1) ... [2020-08-28 06:30:41,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-28 06:30:41,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-28 06:30:42,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 06:30:42,353 INFO L203 MainTranslator]: Completed pre-run [2020-08-28 06:30:42,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 06:30:42,563 INFO L208 MainTranslator]: Completed translation [2020-08-28 06:30:42,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:30:42 WrapperNode [2020-08-28 06:30:42,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-28 06:30:42,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-28 06:30:42,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-28 06:30:42,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-28 06:30:42,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:30:42" (1/1) ... [2020-08-28 06:30:42,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:30:42" (1/1) ... [2020-08-28 06:30:42,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:30:42" (1/1) ... [2020-08-28 06:30:42,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:30:42" (1/1) ... [2020-08-28 06:30:42,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:30:42" (1/1) ... [2020-08-28 06:30:42,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:30:42" (1/1) ... [2020-08-28 06:30:42,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:30:42" (1/1) ... [2020-08-28 06:30:42,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-28 06:30:42,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-28 06:30:42,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-28 06:30:42,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-28 06:30:42,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:30:42" (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 06:30:42,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-28 06:30:42,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-28 06:30:42,838 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-08-28 06:30:42,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-28 06:30:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-08-28 06:30:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-28 06:30:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-28 06:30:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-28 06:30:42,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-28 06:30:42,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-28 06:30:42,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-28 06:30:44,327 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-28 06:30:44,328 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-28 06:30:44,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:30:44 BoogieIcfgContainer [2020-08-28 06:30:44,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-28 06:30:44,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-28 06:30:44,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-28 06:30:44,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-28 06:30:44,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 06:30:41" (1/3) ... [2020-08-28 06:30:44,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c03097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:30:44, skipping insertion in model container [2020-08-28 06:30:44,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:30:42" (2/3) ... [2020-08-28 06:30:44,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c03097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:30:44, skipping insertion in model container [2020-08-28 06:30:44,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:30:44" (3/3) ... [2020-08-28 06:30:44,355 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label52.c [2020-08-28 06:30:44,366 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-28 06:30:44,379 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-28 06:30:44,402 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-28 06:30:44,436 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-28 06:30:44,436 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-28 06:30:44,436 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-28 06:30:44,437 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-28 06:30:44,437 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-28 06:30:44,437 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-28 06:30:44,437 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-28 06:30:44,437 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-28 06:30:44,465 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-08-28 06:30:44,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-28 06:30:44,475 INFO L414 BasicCegarLoop]: Found error trace [2020-08-28 06:30:44,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-28 06:30:44,477 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-28 06:30:44,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-28 06:30:44,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1515832586, now seen corresponding path program 1 times [2020-08-28 06:30:44,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-28 06:30:44,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508767272] [2020-08-28 06:30:44,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-28 06:30:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-28 06:30:44,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-28 06:30:44,678 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 06:30:44,686 INFO L168 Benchmark]: Toolchain (without parser) took 3003.33 ms. Allocated memory was 139.5 MB in the beginning and 237.5 MB in the end (delta: 98.0 MB). Free memory was 99.9 MB in the beginning and 165.6 MB in the end (delta: -65.7 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. [2020-08-28 06:30:44,687 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-28 06:30:44,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 882.72 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 99.7 MB in the beginning and 170.0 MB in the end (delta: -70.3 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2020-08-28 06:30:44,690 INFO L168 Benchmark]: Boogie Preprocessor took 166.50 ms. Allocated memory is still 204.5 MB. Free memory was 170.0 MB in the beginning and 165.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-28 06:30:44,691 INFO L168 Benchmark]: RCFGBuilder took 1608.46 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 165.1 MB in the beginning and 180.1 MB in the end (delta: -15.0 MB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. [2020-08-28 06:30:44,692 INFO L168 Benchmark]: TraceAbstraction took 339.49 ms. Allocated memory is still 237.5 MB. Free memory was 180.1 MB in the beginning and 165.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-08-28 06:30:44,697 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 882.72 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 99.7 MB in the beginning and 170.0 MB in the end (delta: -70.3 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 166.50 ms. Allocated memory is still 204.5 MB. Free memory was 170.0 MB in the beginning and 165.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1608.46 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 165.1 MB in the beginning and 180.1 MB in the end (delta: -15.0 MB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 339.49 ms. Allocated memory is still 237.5 MB. Free memory was 180.1 MB in the beginning and 165.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 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...