/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=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s2iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:36:47,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:36:47,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:36:47,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:36:47,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:36:47,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:36:47,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:36:47,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:36:47,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:36:47,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:36:47,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:36:47,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:36:47,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:36:47,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:36:47,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:36:47,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:36:47,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:36:47,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:36:47,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:36:47,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:36:47,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:36:47,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:36:47,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:36:47,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:36:47,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 19:36:47,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:36:47,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:36:47,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:36:47,584 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 19:36:47,610 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:36:47,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:36:47,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:36:47,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:36:47,612 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:36:47,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:36:47,613 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:36:47,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:36:47,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:36:47,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:36:47,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:36:47,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:36:47,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:36:47,614 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:36:47,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:36:47,614 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:36:47,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:36:47,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:36:47,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:36:47,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:36:47,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:36:47,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:36:47,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:36:47,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:36:47,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:36:47,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:36:47,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:36:47,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:36:47,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:36:47,617 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=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:36:47,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:36:47,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:36:47,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:36:47,936 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:36:47,936 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:36:47,937 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2iff.c [2020-08-18 19:36:48,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc32f9595/22cfded2cc2e4cfb9e100ec077377cf6/FLAGe092c70a7 [2020-08-18 19:36:48,480 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:36:48,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s2iff.c [2020-08-18 19:36:48,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc32f9595/22cfded2cc2e4cfb9e100ec077377cf6/FLAGe092c70a7 [2020-08-18 19:36:48,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc32f9595/22cfded2cc2e4cfb9e100ec077377cf6 [2020-08-18 19:36:48,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:36:48,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:36:48,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:36:48,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:36:48,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:36:48,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:36:48" (1/1) ... [2020-08-18 19:36:48,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44406637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:48, skipping insertion in model container [2020-08-18 19:36:48,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:36:48" (1/1) ... [2020-08-18 19:36:48,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:36:48,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:36:49,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:36:49,102 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:36:49,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:36:49,142 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:36:49,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:49 WrapperNode [2020-08-18 19:36:49,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:36:49,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:36:49,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:36:49,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:36:49,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:49" (1/1) ... [2020-08-18 19:36:49,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:49" (1/1) ... [2020-08-18 19:36:49,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:49" (1/1) ... [2020-08-18 19:36:49,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:49" (1/1) ... [2020-08-18 19:36:49,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:49" (1/1) ... [2020-08-18 19:36:49,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:49" (1/1) ... [2020-08-18 19:36:49,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:49" (1/1) ... [2020-08-18 19:36:49,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:36:49,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:36:49,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:36:49,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:36:49,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:49" (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 19:36:49,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:36:49,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:36:49,331 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 19:36:49,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 19:36:49,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:36:49,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:36:49,331 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 19:36:49,332 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 19:36:49,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 19:36:49,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:36:49,332 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:36:49,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:36:49,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:36:49,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:36:49,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:36:49,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:36:49,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:36:49,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:36:49,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:36:49,619 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:36:49,619 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-18 19:36:49,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:36:49 BoogieIcfgContainer [2020-08-18 19:36:49,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:36:49,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:36:49,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:36:49,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:36:49,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:36:48" (1/3) ... [2020-08-18 19:36:49,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa9bc9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:36:49, skipping insertion in model container [2020-08-18 19:36:49,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:49" (2/3) ... [2020-08-18 19:36:49,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa9bc9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:36:49, skipping insertion in model container [2020-08-18 19:36:49,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:36:49" (3/3) ... [2020-08-18 19:36:49,633 INFO L109 eAbstractionObserver]: Analyzing ICFG s2iff.c [2020-08-18 19:36:49,645 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:36:49,653 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:36:49,668 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:36:49,697 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:36:49,698 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:36:49,698 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:36:49,698 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:36:49,698 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:36:49,698 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:36:49,698 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:36:49,699 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:36:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-18 19:36:49,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 19:36:49,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:36:49,729 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] [2020-08-18 19:36:49,729 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:36:49,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:36:49,736 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-08-18 19:36:49,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:36:49,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543626812] [2020-08-18 19:36:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:36:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:36:49,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:36:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:36:49,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:36:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:36:49,979 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 19:36:49,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543626812] [2020-08-18 19:36:49,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:36:49,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 19:36:49,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961683299] [2020-08-18 19:36:49,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 19:36:49,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:36:50,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 19:36:50,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:36:50,014 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-18 19:36:50,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:36:50,139 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-08-18 19:36:50,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 19:36:50,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-18 19:36:50,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:36:50,151 INFO L225 Difference]: With dead ends: 54 [2020-08-18 19:36:50,152 INFO L226 Difference]: Without dead ends: 25 [2020-08-18 19:36:50,156 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 19:36:50,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-18 19:36:50,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-18 19:36:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-18 19:36:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-18 19:36:50,199 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-08-18 19:36:50,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:36:50,200 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-18 19:36:50,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 19:36:50,200 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-18 19:36:50,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 19:36:50,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:36:50,202 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] [2020-08-18 19:36:50,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:36:50,202 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:36:50,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:36:50,203 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-08-18 19:36:50,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:36:50,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662850976] [2020-08-18 19:36:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:36:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:36:50,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:36:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:36:50,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:36:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:36:50,349 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 19:36:50,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662850976] [2020-08-18 19:36:50,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:36:50,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 19:36:50,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209310244] [2020-08-18 19:36:50,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:36:50,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:36:50,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:36:50,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:36:50,354 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-08-18 19:36:50,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:36:50,464 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-18 19:36:50,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 19:36:50,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-18 19:36:50,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:36:50,466 INFO L225 Difference]: With dead ends: 40 [2020-08-18 19:36:50,466 INFO L226 Difference]: Without dead ends: 30 [2020-08-18 19:36:50,467 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 19:36:50,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-18 19:36:50,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-08-18 19:36:50,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-18 19:36:50,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-08-18 19:36:50,475 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-08-18 19:36:50,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:36:50,476 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-08-18 19:36:50,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:36:50,476 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-08-18 19:36:50,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 19:36:50,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:36:50,478 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] [2020-08-18 19:36:50,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:36:50,478 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:36:50,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:36:50,479 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-08-18 19:36:50,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:36:50,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286279073] [2020-08-18 19:36:50,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:36:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:36:50,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:36:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:36:50,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:36:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:36:50,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:36:50,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286279073] [2020-08-18 19:36:50,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:36:50,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 19:36:50,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724381135] [2020-08-18 19:36:50,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:36:50,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:36:50,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:36:50,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:36:50,816 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 12 states. [2020-08-18 19:36:51,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:36:51,330 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-08-18 19:36:51,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 19:36:51,330 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-08-18 19:36:51,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:36:51,333 INFO L225 Difference]: With dead ends: 42 [2020-08-18 19:36:51,334 INFO L226 Difference]: Without dead ends: 36 [2020-08-18 19:36:51,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-08-18 19:36:51,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-18 19:36:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-08-18 19:36:51,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-18 19:36:51,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-18 19:36:51,344 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 26 [2020-08-18 19:36:51,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:36:51,344 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-18 19:36:51,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:36:51,345 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-18 19:36:51,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 19:36:51,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:36:51,346 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] [2020-08-18 19:36:51,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:36:51,346 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:36:51,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:36:51,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1255066423, now seen corresponding path program 1 times [2020-08-18 19:36:51,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:36:51,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294100013] [2020-08-18 19:36:51,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:36:51,361 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-18 19:36:51,362 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-18 19:36:51,362 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 19:36:51,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:36:51,384 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-18 19:36:51,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:36:51 BoogieIcfgContainer [2020-08-18 19:36:51,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:36:51,387 INFO L168 Benchmark]: Toolchain (without parser) took 2516.93 ms. Allocated memory was 140.0 MB in the beginning and 236.5 MB in the end (delta: 96.5 MB). Free memory was 101.8 MB in the beginning and 142.9 MB in the end (delta: -41.1 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2020-08-18 19:36:51,388 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-18 19:36:51,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.66 ms. Allocated memory is still 140.0 MB. Free memory was 101.6 MB in the beginning and 91.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-18 19:36:51,392 INFO L168 Benchmark]: Boogie Preprocessor took 113.98 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.0 MB in the beginning and 179.8 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-18 19:36:51,393 INFO L168 Benchmark]: RCFGBuilder took 366.62 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 162.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-08-18 19:36:51,395 INFO L168 Benchmark]: TraceAbstraction took 1758.30 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 162.6 MB in the beginning and 142.9 MB in the end (delta: 19.7 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. [2020-08-18 19:36:51,404 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.66 ms. Allocated memory is still 140.0 MB. Free memory was 101.6 MB in the beginning and 91.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.98 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.0 MB in the beginning and 179.8 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 366.62 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 162.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1758.30 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 162.6 MB in the beginning and 142.9 MB in the end (delta: 19.7 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i