/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/ss4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:15:34,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:15:34,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:15:34,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:15:34,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:15:34,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:15:34,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:15:34,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:15:34,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:15:34,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:15:34,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:15:34,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:15:34,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:15:34,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:15:34,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:15:34,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:15:34,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:15:34,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:15:34,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:15:34,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:15:34,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:15:34,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:15:34,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:15:34,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:15:34,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:15:34,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 12:15:34,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 12:15:34,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 12:15:34,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 12:15:34,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 12:15:34,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 12:15:34,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 12:15:34,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 12:15:34,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:15:34,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:15:34,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:15:34,456 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 [2020-07-17 12:15:34,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:15:34,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:15:34,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:15:34,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:15:34,492 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:15:34,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:15:34,492 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:15:34,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:15:34,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:15:34,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:15:34,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:15:34,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:15:34,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:15:34,495 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:15:34,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:15:34,495 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:15:34,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:15:34,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:15:34,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:15:34,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:15:34,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:15:34,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:15:34,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:15:34,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:15:34,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:15:34,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:15:34,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:15:34,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:15:34,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:15:34,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:15:34,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:15:34,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:15:34,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:15:34,860 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:15:34,860 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:15:34,861 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss4f.c [2020-07-17 12:15:34,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/188150107/de8cbffada894141aedb801691a0b4c9/FLAGb1b54fe62 [2020-07-17 12:15:35,527 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:15:35,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss4f.c [2020-07-17 12:15:35,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/188150107/de8cbffada894141aedb801691a0b4c9/FLAGb1b54fe62 [2020-07-17 12:15:35,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/188150107/de8cbffada894141aedb801691a0b4c9 [2020-07-17 12:15:35,864 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:15:35,868 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:15:35,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:15:35,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:15:35,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:15:35,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:15:35" (1/1) ... [2020-07-17 12:15:35,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc1f50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:35, skipping insertion in model container [2020-07-17 12:15:35,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:15:35" (1/1) ... [2020-07-17 12:15:35,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:15:35,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:15:36,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:15:36,140 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:15:36,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:15:36,190 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:15:36,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:36 WrapperNode [2020-07-17 12:15:36,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:15:36,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:15:36,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:15:36,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:15:36,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:36" (1/1) ... [2020-07-17 12:15:36,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:36" (1/1) ... [2020-07-17 12:15:36,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:36" (1/1) ... [2020-07-17 12:15:36,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:36" (1/1) ... [2020-07-17 12:15:36,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:36" (1/1) ... [2020-07-17 12:15:36,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:36" (1/1) ... [2020-07-17 12:15:36,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:36" (1/1) ... [2020-07-17 12:15:36,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:15:36,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:15:36,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:15:36,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:15:36,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:36" (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 [2020-07-17 12:15:36,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:15:36,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:15:36,406 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 12:15:36,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 12:15:36,407 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:15:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:15:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 12:15:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 12:15:36,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 12:15:36,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:15:36,408 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 12:15:36,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:15:36,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 12:15:36,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 12:15:36,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 12:15:36,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 12:15:36,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 12:15:36,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:15:36,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:15:36,731 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:15:36,731 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-17 12:15:36,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:15:36 BoogieIcfgContainer [2020-07-17 12:15:36,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:15:36,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:15:36,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:15:36,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:15:36,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:15:35" (1/3) ... [2020-07-17 12:15:36,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b0332b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:15:36, skipping insertion in model container [2020-07-17 12:15:36,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:15:36" (2/3) ... [2020-07-17 12:15:36,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b0332b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:15:36, skipping insertion in model container [2020-07-17 12:15:36,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:15:36" (3/3) ... [2020-07-17 12:15:36,765 INFO L109 eAbstractionObserver]: Analyzing ICFG ss4f.c [2020-07-17 12:15:36,781 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:15:36,791 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:15:36,825 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:15:36,859 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:15:36,859 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:15:36,859 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:15:36,860 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:15:36,860 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:15:36,860 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:15:36,860 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:15:36,860 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:15:36,882 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-17 12:15:36,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-17 12:15:36,889 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:36,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:15:36,892 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:36,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:36,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-07-17 12:15:36,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:36,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818935429] [2020-07-17 12:15:36,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:37,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818935429] [2020-07-17 12:15:37,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:15:37,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:15:37,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831844357] [2020-07-17 12:15:37,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:15:37,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:37,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:15:37,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:15:37,167 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-07-17 12:15:37,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:37,340 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-07-17 12:15:37,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:15:37,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-17 12:15:37,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:37,354 INFO L225 Difference]: With dead ends: 64 [2020-07-17 12:15:37,354 INFO L226 Difference]: Without dead ends: 30 [2020-07-17 12:15:37,358 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 [2020-07-17 12:15:37,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-17 12:15:37,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-17 12:15:37,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-17 12:15:37,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-17 12:15:37,409 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-07-17 12:15:37,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:37,410 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-17 12:15:37,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:15:37,410 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-17 12:15:37,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-17 12:15:37,411 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:37,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:15:37,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:15:37,412 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:37,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:37,413 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-07-17 12:15:37,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:37,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571693861] [2020-07-17 12:15:37,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:37,449 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 12:15:37,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422762350] [2020-07-17 12:15:37,450 INFO L94 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 [2020-07-17 12:15:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:15:37,513 INFO L264 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-17 12:15:37,522 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:15:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:15:37,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571693861] [2020-07-17 12:15:37,579 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-17 12:15:37,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422762350] [2020-07-17 12:15:37,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:15:37,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:15:37,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349258133] [2020-07-17 12:15:37,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:15:37,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:15:37,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:15:37,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:15:37,584 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 4 states. [2020-07-17 12:15:37,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:15:37,677 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-07-17 12:15:37,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:15:37,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-17 12:15:37,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:15:37,679 INFO L225 Difference]: With dead ends: 53 [2020-07-17 12:15:37,679 INFO L226 Difference]: Without dead ends: 38 [2020-07-17 12:15:37,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:15:37,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-17 12:15:37,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-07-17 12:15:37,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-17 12:15:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-07-17 12:15:37,691 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-07-17 12:15:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:15:37,692 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-07-17 12:15:37,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:15:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-07-17 12:15:37,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-17 12:15:37,695 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:15:37,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:15:37,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-17 12:15:37,911 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:15:37,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:15:37,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-07-17 12:15:37,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:15:37,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416212485] [2020-07-17 12:15:37,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:15:37,982 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 12:15:37,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578281352] [2020-07-17 12:15:37,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:15:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:15:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:15:38,112 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 12:15:38,112 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 12:15:38,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:15:38,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:15:38 BoogieIcfgContainer [2020-07-17 12:15:38,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:15:38,386 INFO L168 Benchmark]: Toolchain (without parser) took 2518.76 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 99.7 MB in the beginning and 88.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 74.7 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:38,387 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.3 MB. Free memory is still 117.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 12:15:38,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.22 ms. Allocated memory is still 136.3 MB. Free memory was 99.2 MB in the beginning and 88.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:38,389 INFO L168 Benchmark]: Boogie Preprocessor took 136.11 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 88.6 MB in the beginning and 177.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:38,390 INFO L168 Benchmark]: RCFGBuilder took 409.42 ms. Allocated memory is still 199.8 MB. Free memory was 177.1 MB in the beginning and 159.5 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:38,391 INFO L168 Benchmark]: TraceAbstraction took 1643.88 ms. Allocated memory is still 199.8 MB. Free memory was 158.5 MB in the beginning and 88.4 MB in the end (delta: 70.1 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB. [2020-07-17 12:15:38,395 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 136.3 MB. Free memory is still 117.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.22 ms. Allocated memory is still 136.3 MB. Free memory was 99.2 MB in the beginning and 88.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.11 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 88.6 MB in the beginning and 177.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 409.42 ms. Allocated memory is still 199.8 MB. Free memory was 177.1 MB in the beginning and 159.5 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1643.88 ms. Allocated memory is still 199.8 MB. Free memory was 158.5 MB in the beginning and 88.4 MB in the end (delta: 70.1 MB). Peak memory consumption was 70.1 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 sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i