/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:56:34,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:56:34,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:56:34,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:56:34,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:56:34,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:56:34,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:56:34,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:56:34,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:56:34,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:56:34,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:56:34,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:56:34,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:56:34,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:56:34,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:56:34,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:56:34,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:56:34,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:56:34,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:56:34,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:56:34,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:56:34,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:56:34,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:56:34,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:56:34,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:56:34,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:56:34,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:56:34,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:56:34,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:56:34,499 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:56:34,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:56:34,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:56:34,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:56:34,501 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:56:34,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:56:34,501 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:56:34,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:56:34,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:56:34,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:56:34,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:56:34,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:56:34,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:56:34,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:56:34,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:56:34,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:56:34,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:56:34,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:56:34,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:56:34,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:56:34,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:56:34,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:34,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:56:34,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:56:34,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:56:34,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:56:34,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:56:34,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:56:34,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:56:34,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:56:34,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:56:34,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:56:34,867 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:56:34,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:56:34,870 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:56:34,871 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ncompf.c [2020-08-22 16:56:34,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/896b6a825/afd49f1864614da6bd1f82b438336180/FLAGf103dfb07 [2020-08-22 16:56:35,306 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:56:35,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ncompf.c [2020-08-22 16:56:35,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/896b6a825/afd49f1864614da6bd1f82b438336180/FLAGf103dfb07 [2020-08-22 16:56:35,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/896b6a825/afd49f1864614da6bd1f82b438336180 [2020-08-22 16:56:35,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:56:35,692 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:56:35,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:35,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:56:35,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:56:35,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:35" (1/1) ... [2020-08-22 16:56:35,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230e0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:35, skipping insertion in model container [2020-08-22 16:56:35,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:35" (1/1) ... [2020-08-22 16:56:35,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:56:35,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:56:35,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:35,910 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:56:35,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:35,951 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:56:35,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:35 WrapperNode [2020-08-22 16:56:35,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:35,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:56:35,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:56:35,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:56:36,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:35" (1/1) ... [2020-08-22 16:56:36,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:35" (1/1) ... [2020-08-22 16:56:36,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:35" (1/1) ... [2020-08-22 16:56:36,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:35" (1/1) ... [2020-08-22 16:56:36,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:35" (1/1) ... [2020-08-22 16:56:36,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:35" (1/1) ... [2020-08-22 16:56:36,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:35" (1/1) ... [2020-08-22 16:56:36,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:56:36,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:56:36,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:56:36,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:56:36,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:56:36,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:56:36,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:56:36,211 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:56:36,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:56:36,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:56:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:56:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:56:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:56:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:56:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:56:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:56:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:56:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:56:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:56:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:56:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:56:36,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:56:36,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:56:36,549 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:56:36,549 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 16:56:36,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:36 BoogieIcfgContainer [2020-08-22 16:56:36,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:56:36,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:56:36,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:56:36,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:56:36,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:56:35" (1/3) ... [2020-08-22 16:56:36,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7319f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:36, skipping insertion in model container [2020-08-22 16:56:36,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:35" (2/3) ... [2020-08-22 16:56:36,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7319f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:36, skipping insertion in model container [2020-08-22 16:56:36,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:36" (3/3) ... [2020-08-22 16:56:36,569 INFO L109 eAbstractionObserver]: Analyzing ICFG ncompf.c [2020-08-22 16:56:36,578 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:56:36,583 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:56:36,595 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:56:36,616 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:56:36,616 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:56:36,616 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:56:36,617 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:56:36,617 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:56:36,617 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:56:36,617 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:56:36,617 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:56:36,635 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-22 16:56:36,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 16:56:36,641 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:36,642 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] [2020-08-22 16:56:36,642 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:36,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:36,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-08-22 16:56:36,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:36,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753989374] [2020-08-22 16:56:36,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:36,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:36,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:36,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753989374] [2020-08-22 16:56:36,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:36,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:36,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11573874] [2020-08-22 16:56:36,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:36,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:36,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:36,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:36,890 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-22 16:56:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:37,027 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-22 16:56:37,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:37,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-22 16:56:37,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:37,039 INFO L225 Difference]: With dead ends: 64 [2020-08-22 16:56:37,039 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 16:56:37,043 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 [2020-08-22 16:56:37,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 16:56:37,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-08-22 16:56:37,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 16:56:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-22 16:56:37,082 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-08-22 16:56:37,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:37,083 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-22 16:56:37,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-22 16:56:37,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 16:56:37,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:37,085 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] [2020-08-22 16:56:37,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:56:37,086 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:37,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:37,086 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-08-22 16:56:37,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:37,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349992413] [2020-08-22 16:56:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:37,116 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:56:37,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611121769] [2020-08-22 16:56:37,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:56:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:37,186 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:37,204 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:37,229 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:56:37,230 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:56:37,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-08-22 16:56:37,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:56:37 BoogieIcfgContainer [2020-08-22 16:56:37,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:56:37,490 INFO L168 Benchmark]: Toolchain (without parser) took 1796.72 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 101.9 MB in the beginning and 117.3 MB in the end (delta: -15.4 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:37,491 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:56:37,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.19 ms. Allocated memory is still 145.8 MB. Free memory was 101.4 MB in the beginning and 91.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:37,493 INFO L168 Benchmark]: Boogie Preprocessor took 201.03 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 91.0 MB in the beginning and 182.4 MB in the end (delta: -91.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:37,494 INFO L168 Benchmark]: RCFGBuilder took 401.66 ms. Allocated memory is still 204.5 MB. Free memory was 182.4 MB in the beginning and 163.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:37,495 INFO L168 Benchmark]: TraceAbstraction took 930.84 ms. Allocated memory is still 204.5 MB. Free memory was 163.1 MB in the beginning and 117.3 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:37,500 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.19 ms. Allocated memory is still 145.8 MB. Free memory was 101.4 MB in the beginning and 91.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 201.03 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 91.0 MB in the beginning and 182.4 MB in the end (delta: -91.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 401.66 ms. Allocated memory is still 204.5 MB. Free memory was 182.4 MB in the beginning and 163.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 930.84 ms. Allocated memory is still 204.5 MB. Free memory was 163.1 MB in the beginning and 117.3 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 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; VAL [\old(N)=4, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L28] long long *c = malloc(sizeof(long long)*N); [L30] a[0] = 6 [L31] b[0] = 1 [L32] c[0] = 0 [L33] i=1 VAL [\old(N)=0, a={-3:0}, b={-1:0}, c={-2:0}, i=1, malloc(sizeof(long long)*N)={-3:0}, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={-2:0}, N=1] [L33] COND FALSE !(i