/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 interpolation-heuristic=FIRST --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/trex01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:10:26,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:10:26,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:10:26,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:10:26,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:10:26,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:10:26,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:10:26,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:10:26,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:10:26,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:10:26,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:10:26,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:10:26,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:10:26,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:10:26,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:10:26,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:10:26,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:10:26,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:10:26,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:10:26,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:10:27,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:10:27,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:10:27,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:10:27,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:10:27,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:10:27,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:10:27,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:10:27,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:10:27,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:10:27,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:10:27,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:10:27,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:10:27,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:10:27,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:10:27,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:10:27,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:10:27,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:10:27,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:10:27,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:10:27,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:10:27,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:10:27,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:10:27,085 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:10:27,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:10:27,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:10:27,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:10:27,088 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:10:27,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:10:27,088 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:10:27,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:10:27,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:10:27,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:10:27,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:10:27,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:10:27,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:10:27,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:10:27,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:10:27,091 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:10:27,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:10:27,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:10:27,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:10:27,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:10:27,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:10:27,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:10:27,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:10:27,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:10:27,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:10:27,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:10:27,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:10:27,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:10:27,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:10:27,094 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:10:27,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:10:27,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:10:27,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:10:27,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:10:27,610 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:10:27,612 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-2.i [2020-09-24 16:10:27,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4c8b935a/6c1041c9cac04be090e3ea6131e0e943/FLAG264127717 [2020-09-24 16:10:28,259 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:10:28,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/trex01-2.i [2020-09-24 16:10:28,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4c8b935a/6c1041c9cac04be090e3ea6131e0e943/FLAG264127717 [2020-09-24 16:10:28,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4c8b935a/6c1041c9cac04be090e3ea6131e0e943 [2020-09-24 16:10:28,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:10:28,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:10:28,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:10:28,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:10:28,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:10:28,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:10:28" (1/1) ... [2020-09-24 16:10:28,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba245a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:28, skipping insertion in model container [2020-09-24 16:10:28,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:10:28" (1/1) ... [2020-09-24 16:10:28,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:10:28,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:10:28,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:10:28,905 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:10:28,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:10:28,944 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:10:28,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:28 WrapperNode [2020-09-24 16:10:28,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:10:28,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:10:28,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:10:28,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:10:28,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:28" (1/1) ... [2020-09-24 16:10:28,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:28" (1/1) ... [2020-09-24 16:10:28,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:28" (1/1) ... [2020-09-24 16:10:28,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:28" (1/1) ... [2020-09-24 16:10:29,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:28" (1/1) ... [2020-09-24 16:10:29,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:28" (1/1) ... [2020-09-24 16:10:29,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:28" (1/1) ... [2020-09-24 16:10:29,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:10:29,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:10:29,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:10:29,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:10:29,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:10:29,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:10:29,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:10:29,157 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 16:10:29,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 16:10:29,157 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-09-24 16:10:29,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:10:29,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:10:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:10:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 16:10:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 16:10:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 16:10:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:10:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-09-24 16:10:29,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:10:29,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:10:29,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:10:29,493 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:10:29,494 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 16:10:29,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:10:29 BoogieIcfgContainer [2020-09-24 16:10:29,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:10:29,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:10:29,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:10:29,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:10:29,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:10:28" (1/3) ... [2020-09-24 16:10:29,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cebfc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:10:29, skipping insertion in model container [2020-09-24 16:10:29,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:28" (2/3) ... [2020-09-24 16:10:29,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cebfc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:10:29, skipping insertion in model container [2020-09-24 16:10:29,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:10:29" (3/3) ... [2020-09-24 16:10:29,508 INFO L109 eAbstractionObserver]: Analyzing ICFG trex01-2.i [2020-09-24 16:10:29,518 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:10:29,528 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:10:29,550 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:10:29,579 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:10:29,579 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:10:29,579 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:10:29,579 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:10:29,579 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:10:29,579 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:10:29,580 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:10:29,580 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:10:29,603 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-09-24 16:10:29,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 16:10:29,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:29,612 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] [2020-09-24 16:10:29,612 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:29,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:29,618 INFO L82 PathProgramCache]: Analyzing trace with hash 36846836, now seen corresponding path program 1 times [2020-09-24 16:10:29,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:29,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781029930] [2020-09-24 16:10:29,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:29,794 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:29,794 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:29,794 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:29,795 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:29,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 16:10:29,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:29,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 16:10:29,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:10:29,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 16:10:29,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:10:29,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:29,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:10:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:29,900 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:29,900 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:29,900 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:29,901 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:29,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:10:29,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:29,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:10:29,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:29,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:29,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:10:29,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781029930] [2020-09-24 16:10:29,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:10:29,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:10:29,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477726786] [2020-09-24 16:10:29,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:10:29,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:10:29,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:10:29,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:10:29,948 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 5 states. [2020-09-24 16:10:30,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:10:30,048 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2020-09-24 16:10:30,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:10:30,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-24 16:10:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:10:30,061 INFO L225 Difference]: With dead ends: 84 [2020-09-24 16:10:30,061 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 16:10:30,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:10:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 16:10:30,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 16:10:30,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 16:10:30,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 16:10:30,098 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-09-24 16:10:30,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:10:30,098 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 16:10:30,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:10:30,099 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 16:10:30,099 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 16:10:30,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:10:30,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 16:10:30,169 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 16:10:30,169 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:10:30,170 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 16:10:30,170 INFO L268 CegarLoopResult]: For program point L27(lines 27 34) no Hoare annotation was computed. [2020-09-24 16:10:30,170 INFO L271 CegarLoopResult]: At program point L27-2(lines 25 35) the Hoare annotation is: true [2020-09-24 16:10:30,170 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 16:10:30,170 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-24 16:10:30,171 INFO L264 CegarLoopResult]: At program point L19-3(line 19) the Hoare annotation is: (<= 1 f_~z~0) [2020-09-24 16:10:30,171 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 16:10:30,171 INFO L264 CegarLoopResult]: At program point L19-4(line 19) the Hoare annotation is: (<= 1 f_~z~0) [2020-09-24 16:10:30,171 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 16:10:30,172 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 16:10:30,173 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-24 16:10:30,173 INFO L268 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-09-24 16:10:30,173 INFO L268 CegarLoopResult]: For program point L15-5(line 15) no Hoare annotation was computed. [2020-09-24 16:10:30,174 INFO L268 CegarLoopResult]: For program point L15-6(line 15) no Hoare annotation was computed. [2020-09-24 16:10:30,174 INFO L268 CegarLoopResult]: For program point L15-7(line 15) no Hoare annotation was computed. [2020-09-24 16:10:30,174 INFO L268 CegarLoopResult]: For program point fEXIT(lines 14 36) no Hoare annotation was computed. [2020-09-24 16:10:30,175 INFO L268 CegarLoopResult]: For program point L15-8(line 15) no Hoare annotation was computed. [2020-09-24 16:10:30,175 INFO L268 CegarLoopResult]: For program point L15-9(line 15) no Hoare annotation was computed. [2020-09-24 16:10:30,175 INFO L271 CegarLoopResult]: At program point fENTRY(lines 14 36) the Hoare annotation is: true [2020-09-24 16:10:30,176 INFO L268 CegarLoopResult]: For program point L28(lines 28 29) no Hoare annotation was computed. [2020-09-24 16:10:30,178 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 16:10:30,179 INFO L268 CegarLoopResult]: For program point L20(lines 14 36) no Hoare annotation was computed. [2020-09-24 16:10:30,179 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-24 16:10:30,179 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 16:10:30,179 INFO L268 CegarLoopResult]: For program point L25-2(lines 14 36) no Hoare annotation was computed. [2020-09-24 16:10:30,179 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 16:10:30,180 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-24 16:10:30,180 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 16:10:30,180 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-24 16:10:30,180 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:10:30,181 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 16:10:30,181 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 16:10:30,182 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:10:30,182 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:10:30,189 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:10:30,189 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 16:10:30,190 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 16:10:30,190 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:10:30,190 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 37 45) the Hoare annotation is: true [2020-09-24 16:10:30,190 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 37 45) no Hoare annotation was computed. [2020-09-24 16:10:30,190 INFO L271 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: true [2020-09-24 16:10:30,191 INFO L268 CegarLoopResult]: For program point L42-1(lines 39 43) no Hoare annotation was computed. [2020-09-24 16:10:30,191 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 37 45) no Hoare annotation was computed. [2020-09-24 16:10:30,191 INFO L271 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: true [2020-09-24 16:10:30,191 INFO L268 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-09-24 16:10:30,191 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-24 16:10:30,193 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 16:10:30,193 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 16:10:30,193 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 16:10:30,194 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 16:10:30,194 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 16:10:30,194 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 16:10:30,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:10:30 BoogieIcfgContainer [2020-09-24 16:10:30,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:10:30,228 INFO L168 Benchmark]: Toolchain (without parser) took 1631.11 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 102.6 MB in the beginning and 126.4 MB in the end (delta: -23.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:30,231 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 145.8 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 16:10:30,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.58 ms. Allocated memory is still 145.8 MB. Free memory was 102.0 MB in the beginning and 92.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:30,235 INFO L168 Benchmark]: Boogie Preprocessor took 122.06 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 92.1 MB in the beginning and 181.1 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:30,236 INFO L168 Benchmark]: RCFGBuilder took 430.23 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 164.2 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:30,237 INFO L168 Benchmark]: TraceAbstraction took 722.73 ms. Allocated memory is still 202.4 MB. Free memory was 163.5 MB in the beginning and 126.4 MB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:30,249 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 145.8 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 345.58 ms. Allocated memory is still 145.8 MB. Free memory was 102.0 MB in the beginning and 92.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.06 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 92.1 MB in the beginning and 181.1 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 430.23 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 164.2 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 722.73 ms. Allocated memory is still 202.4 MB. Free memory was 163.5 MB in the beginning and 126.4 MB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 <= z - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 24 SDslu, 132 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 16 PreInvPairs, 22 NumberOfFragments, 15 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 864 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 correct! Received shutdown request...