/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/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:10:20,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:10:20,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:10:21,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:10:21,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:10:21,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:10:21,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:10:21,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:10:21,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:10:21,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:10:21,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:10:21,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:10:21,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:10:21,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:10:21,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:10:21,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:10:21,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:10:21,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:10:21,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:10:21,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:10:21,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:10:21,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:10:21,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:10:21,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:10:21,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:10:21,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:10:21,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:10:21,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:10:21,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:10:21,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:10:21,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:10:21,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:10:21,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:10:21,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:10:21,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:10:21,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:10:21,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:10:21,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:10:21,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:10:21,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:10:21,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:10:21,062 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 16:10:21,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:10:21,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:10:21,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:10:21,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:10:21,090 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:10:21,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:10:21,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:10:21,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:10:21,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:10:21,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:10:21,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:10:21,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:10:21,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:10:21,092 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:10:21,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:10:21,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:10:21,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:10:21,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:10:21,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:10:21,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:10:21,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:10:21,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:10:21,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:10:21,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:10:21,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:10:21,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:10:21,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:10:21,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:10:21,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:10:21,096 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 16:10:21,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:10:21,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:10:21,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:10:21,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:10:21,577 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:10:21,578 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2020-09-24 16:10:21,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b3f4d967/52a8c8568a8e49a99f14f9faa92076fa/FLAG5f7bae58d [2020-09-24 16:10:22,221 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:10:22,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum_array-1.c [2020-09-24 16:10:22,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b3f4d967/52a8c8568a8e49a99f14f9faa92076fa/FLAG5f7bae58d [2020-09-24 16:10:22,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b3f4d967/52a8c8568a8e49a99f14f9faa92076fa [2020-09-24 16:10:22,567 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:10:22,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:10:22,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:10:22,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:10:22,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:10:22,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:10:22" (1/1) ... [2020-09-24 16:10:22,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52da0f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:22, skipping insertion in model container [2020-09-24 16:10:22,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:10:22" (1/1) ... [2020-09-24 16:10:22,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:10:22,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:10:22,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:10:22,875 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:10:22,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:10:22,925 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:10:22,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:22 WrapperNode [2020-09-24 16:10:22,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:10:22,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:10:22,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:10:22,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:10:23,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:22" (1/1) ... [2020-09-24 16:10:23,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:22" (1/1) ... [2020-09-24 16:10:23,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:22" (1/1) ... [2020-09-24 16:10:23,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:22" (1/1) ... [2020-09-24 16:10:23,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:22" (1/1) ... [2020-09-24 16:10:23,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:22" (1/1) ... [2020-09-24 16:10:23,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:22" (1/1) ... [2020-09-24 16:10:23,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:10:23,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:10:23,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:10:23,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:10:23,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:22" (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 16:10:23,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:10:23,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:10:23,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 16:10:23,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:10:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:10:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:10:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 16:10:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 16:10:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:10:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:10:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:10:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:10:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:10:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:10:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:10:23,529 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:10:23,529 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 16:10:23,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:10:23 BoogieIcfgContainer [2020-09-24 16:10:23,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:10:23,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:10:23,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:10:23,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:10:23,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:10:22" (1/3) ... [2020-09-24 16:10:23,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1163873e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:10:23, skipping insertion in model container [2020-09-24 16:10:23,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:22" (2/3) ... [2020-09-24 16:10:23,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1163873e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:10:23, skipping insertion in model container [2020-09-24 16:10:23,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:10:23" (3/3) ... [2020-09-24 16:10:23,548 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-09-24 16:10:23,560 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:10:23,570 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:10:23,592 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:10:23,621 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:10:23,622 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:10:23,622 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:10:23,622 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:10:23,622 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:10:23,622 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:10:23,622 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:10:23,622 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:10:23,644 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-09-24 16:10:23,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 16:10:23,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:23,654 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] [2020-09-24 16:10:23,654 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:23,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:23,661 INFO L82 PathProgramCache]: Analyzing trace with hash -36140131, now seen corresponding path program 1 times [2020-09-24 16:10:23,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:23,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358490639] [2020-09-24 16:10:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:23,850 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:23,851 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:23,851 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:23,851 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:23,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 16:10:23,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:23,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 16:10:23,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:10:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:23,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:10:23,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:10:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:23,952 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:23,952 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:23,952 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:23,953 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:23,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:10:23,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:23,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:10:23,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:23,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:23,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:23,971 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 16:10:23,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358490639] [2020-09-24 16:10:23,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:10:23,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:10:23,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853719547] [2020-09-24 16:10:23,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:10:23,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:10:24,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:10:24,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:10:24,005 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2020-09-24 16:10:24,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:10:24,220 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2020-09-24 16:10:24,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:10:24,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-09-24 16:10:24,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:10:24,235 INFO L225 Difference]: With dead ends: 113 [2020-09-24 16:10:24,235 INFO L226 Difference]: Without dead ends: 57 [2020-09-24 16:10:24,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:10:24,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-24 16:10:24,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-09-24 16:10:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-24 16:10:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-09-24 16:10:24,299 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 28 [2020-09-24 16:10:24,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:10:24,300 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-09-24 16:10:24,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:10:24,301 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-09-24 16:10:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 16:10:24,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:24,302 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] [2020-09-24 16:10:24,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:10:24,303 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:24,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1098625525, now seen corresponding path program 1 times [2020-09-24 16:10:24,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:24,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821453883] [2020-09-24 16:10:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:24,426 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:24,426 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:24,426 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:24,427 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:24,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 16:10:24,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 16:10:24,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:10:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 16:10:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:10:24,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:10:24,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:10:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:24,536 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:24,537 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:24,537 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:24,537 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:24,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:10:24,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:24,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:10:24,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:24,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:24,550 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 16:10:24,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821453883] [2020-09-24 16:10:24,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:10:24,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:10:24,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361164273] [2020-09-24 16:10:24,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:10:24,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:10:24,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:10:24,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:10:24,556 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 5 states. [2020-09-24 16:10:24,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:10:24,863 INFO L93 Difference]: Finished difference Result 128 states and 139 transitions. [2020-09-24 16:10:24,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:10:24,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-24 16:10:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:10:24,868 INFO L225 Difference]: With dead ends: 128 [2020-09-24 16:10:24,868 INFO L226 Difference]: Without dead ends: 87 [2020-09-24 16:10:24,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 16:10:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-24 16:10:24,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 60. [2020-09-24 16:10:24,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 16:10:24,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-24 16:10:24,888 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 28 [2020-09-24 16:10:24,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:10:24,888 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-24 16:10:24,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:10:24,888 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-24 16:10:24,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 16:10:24,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:24,890 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, 1, 1, 1, 1] [2020-09-24 16:10:24,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:10:24,891 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:24,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:24,891 INFO L82 PathProgramCache]: Analyzing trace with hash -362895398, now seen corresponding path program 1 times [2020-09-24 16:10:24,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:24,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453062340] [2020-09-24 16:10:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:10:25,099 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:10:25,100 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:10:25,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:10:25,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:10:25 BoogieIcfgContainer [2020-09-24 16:10:25,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:10:25,145 INFO L168 Benchmark]: Toolchain (without parser) took 2571.54 ms. Allocated memory was 145.8 MB in the beginning and 232.8 MB in the end (delta: 87.0 MB). Free memory was 101.9 MB in the beginning and 183.3 MB in the end (delta: -81.4 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:25,147 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 16:10:25,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.47 ms. Allocated memory is still 145.8 MB. Free memory was 101.2 MB in the beginning and 90.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:25,149 INFO L168 Benchmark]: Boogie Preprocessor took 133.19 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 90.8 MB in the beginning and 178.4 MB in the end (delta: -87.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:25,151 INFO L168 Benchmark]: RCFGBuilder took 475.18 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 158.1 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:25,153 INFO L168 Benchmark]: TraceAbstraction took 1602.14 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 158.1 MB in the beginning and 183.3 MB in the end (delta: -25.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:25,164 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 349.47 ms. Allocated memory is still 145.8 MB. Free memory was 101.2 MB in the beginning and 90.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.19 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 90.8 MB in the beginning and 178.4 MB in the end (delta: -87.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 475.18 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 158.1 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1602.14 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 158.1 MB in the beginning and 183.3 MB in the end (delta: -25.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 [L18] COND TRUE i