/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=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:48:25,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:48:25,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:48:25,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:48:25,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:48:25,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:48:25,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:48:25,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:48:25,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:48:25,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:48:25,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:48:25,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:48:25,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:48:25,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:48:25,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:48:25,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:48:25,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:48:25,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:48:25,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:48:25,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:48:25,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:48:25,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:48:25,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:48:25,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:48:25,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:48:25,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:48:25,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:48:25,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:48:25,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:48:25,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-18 18:48:25,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:48:25,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:48:25,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:48:25,686 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 [2020-08-18 18:48:25,725 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:48:25,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:48:25,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:48:25,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:48:25,728 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:48:25,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:48:25,729 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:48:25,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:48:25,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:48:25,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:48:25,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:48:25,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:48:25,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:48:25,731 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:48:25,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:48:25,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:48:25,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:48:25,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:48:25,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:48:25,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:48:25,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:48:25,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:48:25,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:48:25,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:48:25,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:48:25,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:48:25,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:48:25,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:48:25,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:48:25,735 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=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:48:26,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:48:26,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:48:26,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:48:26,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:48:26,100 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:48:26,101 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1of.c [2020-08-18 18:48:26,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a00c54f61/faf00f74c9164ad388c14d2af6533e6a/FLAGec2e6eb6d [2020-08-18 18:48:26,633 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:48:26,634 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res1of.c [2020-08-18 18:48:26,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a00c54f61/faf00f74c9164ad388c14d2af6533e6a/FLAGec2e6eb6d [2020-08-18 18:48:27,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a00c54f61/faf00f74c9164ad388c14d2af6533e6a [2020-08-18 18:48:27,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:48:27,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:48:27,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:48:27,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:48:27,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:48:27,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:48:27" (1/1) ... [2020-08-18 18:48:27,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c8b0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:27, skipping insertion in model container [2020-08-18 18:48:27,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:48:27" (1/1) ... [2020-08-18 18:48:27,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:48:27,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:48:27,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:48:27,283 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:48:27,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:48:27,407 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:48:27,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:27 WrapperNode [2020-08-18 18:48:27,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:48:27,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:48:27,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:48:27,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:48:27,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:27" (1/1) ... [2020-08-18 18:48:27,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:27" (1/1) ... [2020-08-18 18:48:27,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:27" (1/1) ... [2020-08-18 18:48:27,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:27" (1/1) ... [2020-08-18 18:48:27,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:27" (1/1) ... [2020-08-18 18:48:27,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:27" (1/1) ... [2020-08-18 18:48:27,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:27" (1/1) ... [2020-08-18 18:48:27,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:48:27,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:48:27,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:48:27,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:48:27,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:27" (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 [2020-08-18 18:48:27,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:48:27,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:48:27,521 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 18:48:27,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 18:48:27,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:48:27,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:48:27,521 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 18:48:27,521 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 18:48:27,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 18:48:27,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:48:27,522 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:48:27,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:48:27,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:48:27,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:48:27,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:48:27,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:48:27,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:48:27,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:48:27,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:48:27,792 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:48:27,792 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 18:48:27,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:48:27 BoogieIcfgContainer [2020-08-18 18:48:27,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:48:27,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:48:27,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:48:27,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:48:27,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:48:27" (1/3) ... [2020-08-18 18:48:27,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6725ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:48:27, skipping insertion in model container [2020-08-18 18:48:27,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:48:27" (2/3) ... [2020-08-18 18:48:27,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6725ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:48:27, skipping insertion in model container [2020-08-18 18:48:27,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:48:27" (3/3) ... [2020-08-18 18:48:27,806 INFO L109 eAbstractionObserver]: Analyzing ICFG res1of.c [2020-08-18 18:48:27,819 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:48:27,838 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:48:27,876 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:48:27,914 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:48:27,914 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:48:27,914 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:48:27,915 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:48:27,915 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:48:27,915 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:48:27,915 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:48:27,915 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:48:27,934 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-18 18:48:27,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 18:48:27,941 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:48:27,942 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] [2020-08-18 18:48:27,942 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:48:27,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:48:27,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-08-18 18:48:27,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:48:27,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63642814] [2020-08-18 18:48:27,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:48:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:48:28,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:48:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:48:28,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:48:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:48:28,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:48:28,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63642814] [2020-08-18 18:48:28,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:48:28,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 18:48:28,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542035467] [2020-08-18 18:48:28,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 18:48:28,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:48:28,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 18:48:28,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:48:28,204 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-18 18:48:28,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:48:28,325 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-18 18:48:28,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:48:28,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-18 18:48:28,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:48:28,336 INFO L225 Difference]: With dead ends: 64 [2020-08-18 18:48:28,336 INFO L226 Difference]: Without dead ends: 30 [2020-08-18 18:48:28,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:48:28,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-18 18:48:28,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-18 18:48:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-18 18:48:28,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-18 18:48:28,385 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-08-18 18:48:28,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:48:28,386 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-18 18:48:28,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 18:48:28,386 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-18 18:48:28,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 18:48:28,388 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:48:28,388 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] [2020-08-18 18:48:28,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:48:28,389 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:48:28,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:48:28,389 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-08-18 18:48:28,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:48:28,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178714108] [2020-08-18 18:48:28,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:48:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:48:28,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:48:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:48:28,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:48:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:48:28,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:48:28,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178714108] [2020-08-18 18:48:28,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:48:28,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:48:28,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44312672] [2020-08-18 18:48:28,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:48:28,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:48:28,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:48:28,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:48:28,550 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-08-18 18:48:28,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:48:28,684 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-08-18 18:48:28,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:48:28,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-08-18 18:48:28,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:48:28,687 INFO L225 Difference]: With dead ends: 53 [2020-08-18 18:48:28,687 INFO L226 Difference]: Without dead ends: 38 [2020-08-18 18:48:28,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:48:28,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-18 18:48:28,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-18 18:48:28,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-18 18:48:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-08-18 18:48:28,699 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-08-18 18:48:28,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:48:28,700 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-08-18 18:48:28,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:48:28,700 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-08-18 18:48:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 18:48:28,702 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:48:28,702 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] [2020-08-18 18:48:28,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:48:28,703 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:48:28,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:48:28,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-08-18 18:48:28,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:48:28,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789084547] [2020-08-18 18:48:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:48:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:48:28,765 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:48:28,766 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:48:28,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:48:28,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:48:28 BoogieIcfgContainer [2020-08-18 18:48:28,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:48:28,817 INFO L168 Benchmark]: Toolchain (without parser) took 1761.14 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 101.7 MB in the beginning and 101.6 MB in the end (delta: 28.0 kB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:48:28,819 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-08-18 18:48:28,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.44 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 101.7 MB in the beginning and 179.7 MB in the end (delta: -78.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-18 18:48:28,821 INFO L168 Benchmark]: Boogie Preprocessor took 50.91 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 177.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-18 18:48:28,823 INFO L168 Benchmark]: RCFGBuilder took 338.91 ms. Allocated memory is still 201.3 MB. Free memory was 177.4 MB in the beginning and 159.3 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2020-08-18 18:48:28,825 INFO L168 Benchmark]: TraceAbstraction took 1010.91 ms. Allocated memory is still 201.3 MB. Free memory was 159.3 MB in the beginning and 101.6 MB in the end (delta: 57.7 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. [2020-08-18 18:48:28,835 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 355.44 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 101.7 MB in the beginning and 179.7 MB in the end (delta: -78.0 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.91 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 177.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 338.91 ms. Allocated memory is still 201.3 MB. Free memory was 177.4 MB in the beginning and 159.3 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1010.91 ms. Allocated memory is still 201.3 MB. Free memory was 159.3 MB in the beginning and 101.6 MB in the end (delta: 57.7 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L28] int *b = malloc(sizeof(int)*N); [L30] sum[0] = 0 [L31] i=0 [L31] COND TRUE i