/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/modsf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:15:21,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:15:21,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:15:21,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:15:21,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:15:21,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:15:21,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:15:21,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:15:21,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:15:21,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:15:21,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:15:21,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:15:21,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:15:21,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:15:21,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:15:21,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:15:21,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:15:21,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:15:21,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:15:21,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:15:21,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:15:21,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:15:21,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:15:21,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:15:21,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 12:15:21,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:15:21,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:15:21,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:15:21,384 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 12:15:21,407 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:15:21,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:15:21,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:15:21,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:15:21,409 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:15:21,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:15:21,409 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:15:21,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:15:21,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:15:21,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:15:21,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:15:21,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:15:21,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:15:21,411 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:15:21,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:15:21,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:15:21,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:15:21,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:15:21,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:15:21,414 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:15:21,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:15:21,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:15:21,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:15:21,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:15:21,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:15:21,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:15:21,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:15:21,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:15:21,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:15:21,416 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:15:21,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:15:21,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:15:21,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:15:21,766 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:15:21,766 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:15:21,768 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modsf.c [2020-08-18 12:15:21,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc71c43f4/c7742a674c444c75b074b54203dadea4/FLAGd76c08b10 [2020-08-18 12:15:22,271 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:15:22,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/modsf.c [2020-08-18 12:15:22,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc71c43f4/c7742a674c444c75b074b54203dadea4/FLAGd76c08b10 [2020-08-18 12:15:22,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc71c43f4/c7742a674c444c75b074b54203dadea4 [2020-08-18 12:15:22,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:15:22,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:15:22,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:15:22,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:15:22,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:15:22,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:15:22" (1/1) ... [2020-08-18 12:15:22,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e2018f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:15:22, skipping insertion in model container [2020-08-18 12:15:22,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:15:22" (1/1) ... [2020-08-18 12:15:22,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:15:22,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:15:22,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:15:22,962 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:15:22,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:15:23,079 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:15:23,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:15:23 WrapperNode [2020-08-18 12:15:23,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:15:23,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:15:23,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:15:23,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:15:23,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:15:23" (1/1) ... [2020-08-18 12:15:23,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:15:23" (1/1) ... [2020-08-18 12:15:23,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:15:23" (1/1) ... [2020-08-18 12:15:23,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:15:23" (1/1) ... [2020-08-18 12:15:23,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:15:23" (1/1) ... [2020-08-18 12:15:23,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:15:23" (1/1) ... [2020-08-18 12:15:23,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:15:23" (1/1) ... [2020-08-18 12:15:23,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:15:23,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:15:23,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:15:23,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:15:23,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:15:23" (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 12:15:23,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:15:23,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:15:23,200 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 12:15:23,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 12:15:23,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:15:23,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:15:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 12:15:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 12:15:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 12:15:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:15:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 12:15:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:15:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:15:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:15:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:15:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:15:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:15:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:15:23,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:15:23,478 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:15:23,478 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 12:15:23,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:15:23 BoogieIcfgContainer [2020-08-18 12:15:23,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:15:23,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:15:23,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:15:23,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:15:23,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:15:22" (1/3) ... [2020-08-18 12:15:23,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c84d3e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:15:23, skipping insertion in model container [2020-08-18 12:15:23,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:15:23" (2/3) ... [2020-08-18 12:15:23,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c84d3e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:15:23, skipping insertion in model container [2020-08-18 12:15:23,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:15:23" (3/3) ... [2020-08-18 12:15:23,512 INFO L109 eAbstractionObserver]: Analyzing ICFG modsf.c [2020-08-18 12:15:23,532 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:15:23,548 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:15:23,564 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:15:23,590 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:15:23,591 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:15:23,591 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:15:23,591 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:15:23,592 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:15:23,592 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:15:23,592 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:15:23,593 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:15:23,612 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-18 12:15:23,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 12:15:23,618 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:15:23,619 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 12:15:23,620 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:15:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:15:23,625 INFO L82 PathProgramCache]: Analyzing trace with hash -173101897, now seen corresponding path program 1 times [2020-08-18 12:15:23,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:15:23,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43432663] [2020-08-18 12:15:23,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:15:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:15:23,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:15:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:15:23,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:15:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:15:23,835 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 12:15:23,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43432663] [2020-08-18 12:15:23,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:15:23,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 12:15:23,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803879305] [2020-08-18 12:15:23,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 12:15:23,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:15:23,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 12:15:23,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 12:15:23,864 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-08-18 12:15:24,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:15:24,016 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-08-18 12:15:24,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 12:15:24,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-08-18 12:15:24,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:15:24,034 INFO L225 Difference]: With dead ends: 70 [2020-08-18 12:15:24,035 INFO L226 Difference]: Without dead ends: 35 [2020-08-18 12:15:24,039 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 12:15:24,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-18 12:15:24,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-18 12:15:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-18 12:15:24,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-18 12:15:24,084 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2020-08-18 12:15:24,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:15:24,085 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-18 12:15:24,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 12:15:24,085 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-18 12:15:24,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 12:15:24,086 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:15:24,087 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 12:15:24,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:15:24,087 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:15:24,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:15:24,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1503462707, now seen corresponding path program 1 times [2020-08-18 12:15:24,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:15:24,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283953129] [2020-08-18 12:15:24,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:15:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:15:24,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:15:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:15:24,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:15:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:15:24,215 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 12:15:24,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283953129] [2020-08-18 12:15:24,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:15:24,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:15:24,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258391571] [2020-08-18 12:15:24,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:15:24,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:15:24,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:15:24,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:15:24,220 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-08-18 12:15:24,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:15:24,390 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-08-18 12:15:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:15:24,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-08-18 12:15:24,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:15:24,394 INFO L225 Difference]: With dead ends: 67 [2020-08-18 12:15:24,394 INFO L226 Difference]: Without dead ends: 47 [2020-08-18 12:15:24,395 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 12:15:24,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-18 12:15:24,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-08-18 12:15:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-18 12:15:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-08-18 12:15:24,411 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2020-08-18 12:15:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:15:24,412 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-08-18 12:15:24,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:15:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-08-18 12:15:24,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-18 12:15:24,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:15:24,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:15:24,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:15:24,414 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:15:24,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:15:24,415 INFO L82 PathProgramCache]: Analyzing trace with hash -260192085, now seen corresponding path program 1 times [2020-08-18 12:15:24,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:15:24,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357621208] [2020-08-18 12:15:24,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:15:24,450 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-18 12:15:24,450 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-18 12:15:24,450 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 12:15:24,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:15:24,474 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-18 12:15:24,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 12:15:24 BoogieIcfgContainer [2020-08-18 12:15:24,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 12:15:24,478 INFO L168 Benchmark]: Toolchain (without parser) took 1777.77 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 97.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. [2020-08-18 12:15:24,479 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 12:15:24,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.07 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 180.6 MB in the end (delta: -79.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-18 12:15:24,481 INFO L168 Benchmark]: Boogie Preprocessor took 64.08 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 178.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-18 12:15:24,482 INFO L168 Benchmark]: RCFGBuilder took 347.61 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 159.5 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2020-08-18 12:15:24,483 INFO L168 Benchmark]: TraceAbstraction took 980.42 ms. Allocated memory is still 201.9 MB. Free memory was 158.8 MB in the beginning and 97.6 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2020-08-18 12:15:24,487 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 380.07 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 180.6 MB in the end (delta: -79.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.08 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 178.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 347.61 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 159.5 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 980.42 ms. Allocated memory is still 201.9 MB. Free memory was 158.8 MB in the beginning and 97.6 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 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] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i