/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:42:00,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:42:00,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:42:00,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:42:00,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:42:00,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:42:00,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:42:00,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:42:00,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:42:00,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:42:00,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:42:00,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:42:00,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:42:00,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:42:00,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:42:00,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:42:00,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:42:00,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:42:00,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:42:00,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:42:00,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:42:00,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:42:00,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:42:00,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:42:00,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:42:00,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:42:00,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:42:00,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:42:00,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:42:00,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 03:42:00,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:42:00,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:42:00,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:42:00,496 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 [2020-08-19 03:42:00,542 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:42:00,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:42:00,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:42:00,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:42:00,544 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:42:00,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:42:00,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:42:00,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:42:00,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:42:00,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:42:00,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:42:00,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:42:00,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:42:00,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:42:00,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:42:00,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:42:00,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:42:00,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:42:00,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:42:00,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:42:00,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:42:00,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:42:00,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:42:00,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:42:00,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:42:00,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:42:00,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:42:00,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:42:00,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:42:00,551 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:42:00,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:42:00,875 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:42:00,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:42:00,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:42:00,881 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:42:00,882 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2020-08-19 03:42:00,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d87c9c24/6a0af0c25a7c4b82a30eb0cc8a9337c3/FLAG5ad30ff87 [2020-08-19 03:42:01,441 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:42:01,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum_array-1.c [2020-08-19 03:42:01,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d87c9c24/6a0af0c25a7c4b82a30eb0cc8a9337c3/FLAG5ad30ff87 [2020-08-19 03:42:01,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d87c9c24/6a0af0c25a7c4b82a30eb0cc8a9337c3 [2020-08-19 03:42:01,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:42:01,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:42:01,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:42:01,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:42:01,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:42:01,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:42:01" (1/1) ... [2020-08-19 03:42:01,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2baf6fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:42:01, skipping insertion in model container [2020-08-19 03:42:01,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:42:01" (1/1) ... [2020-08-19 03:42:01,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:42:01,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:42:02,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:42:02,191 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:42:02,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:42:02,344 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:42:02,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:42:02 WrapperNode [2020-08-19 03:42:02,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:42:02,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:42:02,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:42:02,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:42:02,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:42:02" (1/1) ... [2020-08-19 03:42:02,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:42:02" (1/1) ... [2020-08-19 03:42:02,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:42:02" (1/1) ... [2020-08-19 03:42:02,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:42:02" (1/1) ... [2020-08-19 03:42:02,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:42:02" (1/1) ... [2020-08-19 03:42:02,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:42:02" (1/1) ... [2020-08-19 03:42:02,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:42:02" (1/1) ... [2020-08-19 03:42:02,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:42:02,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:42:02,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:42:02,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:42:02,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:42:02" (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 [2020-08-19 03:42:02,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:42:02,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:42:02,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 03:42:02,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:42:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:42:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:42:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 03:42:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-19 03:42:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:42:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:42:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:42:02,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:42:02,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:42:02,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:42:02,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:42:02,778 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:42:02,779 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 03:42:02,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:42:02 BoogieIcfgContainer [2020-08-19 03:42:02,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:42:02,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:42:02,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:42:02,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:42:02,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:42:01" (1/3) ... [2020-08-19 03:42:02,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196b15b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:42:02, skipping insertion in model container [2020-08-19 03:42:02,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:42:02" (2/3) ... [2020-08-19 03:42:02,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196b15b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:42:02, skipping insertion in model container [2020-08-19 03:42:02,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:42:02" (3/3) ... [2020-08-19 03:42:02,793 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-08-19 03:42:02,805 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:42:02,813 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:42:02,842 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:42:02,886 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:42:02,887 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:42:02,888 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:42:02,888 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:42:02,889 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:42:02,889 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:42:02,889 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:42:02,889 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:42:02,906 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-08-19 03:42:02,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 03:42:02,913 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:42:02,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:42:02,914 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:42:02,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:42:02,921 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2020-08-19 03:42:02,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:42:02,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153183698] [2020-08-19 03:42:02,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:42:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:42:03,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:42:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:42:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:42:03,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153183698] [2020-08-19 03:42:03,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:42:03,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:42:03,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925264468] [2020-08-19 03:42:03,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:42:03,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:42:03,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:42:03,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:42:03,171 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-08-19 03:42:03,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:42:03,275 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2020-08-19 03:42:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:42:03,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 03:42:03,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:42:03,285 INFO L225 Difference]: With dead ends: 52 [2020-08-19 03:42:03,285 INFO L226 Difference]: Without dead ends: 25 [2020-08-19 03:42:03,290 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 [2020-08-19 03:42:03,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-19 03:42:03,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-19 03:42:03,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-19 03:42:03,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-08-19 03:42:03,328 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2020-08-19 03:42:03,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:42:03,329 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-08-19 03:42:03,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:42:03,329 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-08-19 03:42:03,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 03:42:03,330 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:42:03,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:42:03,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:42:03,331 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:42:03,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:42:03,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1687882214, now seen corresponding path program 1 times [2020-08-19 03:42:03,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:42:03,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288171398] [2020-08-19 03:42:03,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:42:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:42:03,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:42:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:42:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:42:03,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288171398] [2020-08-19 03:42:03,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:42:03,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:42:03,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136360735] [2020-08-19 03:42:03,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:42:03,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:42:03,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:42:03,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:42:03,517 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 5 states. [2020-08-19 03:42:03,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:42:03,663 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2020-08-19 03:42:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:42:03,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-19 03:42:03,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:42:03,668 INFO L225 Difference]: With dead ends: 57 [2020-08-19 03:42:03,668 INFO L226 Difference]: Without dead ends: 35 [2020-08-19 03:42:03,669 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 [2020-08-19 03:42:03,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-19 03:42:03,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2020-08-19 03:42:03,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-19 03:42:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-19 03:42:03,682 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2020-08-19 03:42:03,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:42:03,682 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-19 03:42:03,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:42:03,683 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-19 03:42:03,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 03:42:03,683 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:42:03,684 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] [2020-08-19 03:42:03,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:42:03,684 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:42:03,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:42:03,685 INFO L82 PathProgramCache]: Analyzing trace with hash -825329612, now seen corresponding path program 1 times [2020-08-19 03:42:03,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:42:03,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354200355] [2020-08-19 03:42:03,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:42:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:42:03,797 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:42:03,797 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:42:03,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:42:03,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:42:03 BoogieIcfgContainer [2020-08-19 03:42:03,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:42:03,834 INFO L168 Benchmark]: Toolchain (without parser) took 1960.74 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.8 MB in the beginning and 104.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. [2020-08-19 03:42:03,836 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 03:42:03,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 475.17 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.6 MB in the beginning and 182.5 MB in the end (delta: -78.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-08-19 03:42:03,839 INFO L168 Benchmark]: Boogie Preprocessor took 77.82 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 180.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-19 03:42:03,841 INFO L168 Benchmark]: RCFGBuilder took 359.27 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 163.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:42:03,843 INFO L168 Benchmark]: TraceAbstraction took 1043.23 ms. Allocated memory is still 203.4 MB. Free memory was 162.3 MB in the beginning and 104.9 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-08-19 03:42:03,852 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 475.17 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.6 MB in the beginning and 182.5 MB in the end (delta: -78.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.82 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 180.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 359.27 ms. Allocated memory is still 203.4 MB. Free memory was 180.1 MB in the beginning and 163.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1043.23 ms. Allocated memory is still 203.4 MB. Free memory was 162.3 MB in the beginning and 104.9 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 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