/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 CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ms3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:45:11,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:45:11,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:45:11,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:45:11,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:45:11,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:45:11,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:45:11,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:45:11,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:45:11,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:45:11,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:45:11,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:45:11,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:45:11,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:45:11,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:45:11,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:45:11,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:45:11,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:45:11,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:45:11,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:45:11,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:45:11,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:45:11,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:45:11,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:45:11,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:45:11,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 21:45:11,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 21:45:11,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 21:45:11,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 21:45:11,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 21:45:11,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 21:45:11,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 21:45:11,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 21:45:11,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:45:11,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:45:11,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:45:11,589 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 [2020-07-19 21:45:11,604 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:45:11,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:45:11,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:45:11,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:45:11,606 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:45:11,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:45:11,606 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:45:11,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:45:11,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:45:11,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:45:11,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:45:11,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:45:11,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:45:11,607 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:45:11,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:45:11,608 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:45:11,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:45:11,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:45:11,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:45:11,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:45:11,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:45:11,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:45:11,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:45:11,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:45:11,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:45:11,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:45:11,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:45:11,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:45:11,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:45:11,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:45:11,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:45:11,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:45:11,922 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:45:11,924 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:45:11,924 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:45:11,925 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms3f.c [2020-07-19 21:45:11,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04a63d0e/27051dd84c7748a6943764cf0ea45d81/FLAG46af0c47f [2020-07-19 21:45:12,479 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:45:12,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms3f.c [2020-07-19 21:45:12,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04a63d0e/27051dd84c7748a6943764cf0ea45d81/FLAG46af0c47f [2020-07-19 21:45:12,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04a63d0e/27051dd84c7748a6943764cf0ea45d81 [2020-07-19 21:45:12,850 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:45:12,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:45:12,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:45:12,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:45:12,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:45:12,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:45:12" (1/1) ... [2020-07-19 21:45:12,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29599e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:12, skipping insertion in model container [2020-07-19 21:45:12,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:45:12" (1/1) ... [2020-07-19 21:45:12,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:45:12,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:45:13,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:45:13,089 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:45:13,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:45:13,122 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:45:13,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:13 WrapperNode [2020-07-19 21:45:13,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:45:13,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:45:13,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:45:13,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:45:13,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:13" (1/1) ... [2020-07-19 21:45:13,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:13" (1/1) ... [2020-07-19 21:45:13,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:13" (1/1) ... [2020-07-19 21:45:13,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:13" (1/1) ... [2020-07-19 21:45:13,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:13" (1/1) ... [2020-07-19 21:45:13,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:13" (1/1) ... [2020-07-19 21:45:13,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:13" (1/1) ... [2020-07-19 21:45:13,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:45:13,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:45:13,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:45:13,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:45:13,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:13" (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 [2020-07-19 21:45:13,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:45:13,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:45:13,315 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 21:45:13,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 21:45:13,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:45:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:45:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 21:45:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 21:45:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 21:45:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:45:13,316 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 21:45:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:45:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:45:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 21:45:13,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:45:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:45:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:45:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:45:13,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:45:13,576 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:45:13,577 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-19 21:45:13,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:45:13 BoogieIcfgContainer [2020-07-19 21:45:13,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:45:13,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:45:13,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:45:13,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:45:13,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:45:12" (1/3) ... [2020-07-19 21:45:13,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1331227d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:45:13, skipping insertion in model container [2020-07-19 21:45:13,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:13" (2/3) ... [2020-07-19 21:45:13,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1331227d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:45:13, skipping insertion in model container [2020-07-19 21:45:13,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:45:13" (3/3) ... [2020-07-19 21:45:13,588 INFO L109 eAbstractionObserver]: Analyzing ICFG ms3f.c [2020-07-19 21:45:13,599 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:45:13,605 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:45:13,620 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:45:13,644 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:45:13,644 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:45:13,645 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:45:13,645 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:45:13,645 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:45:13,645 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:45:13,645 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:45:13,645 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:45:13,663 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-19 21:45:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-19 21:45:13,674 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:13,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:45:13,676 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:13,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:13,682 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-07-19 21:45:13,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:13,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803593965] [2020-07-19 21:45:13,695 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e3c561f [2020-07-19 21:45:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:45:13,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803593965] [2020-07-19 21:45:13,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:13,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:45:13,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145143345] [2020-07-19 21:45:13,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:45:13,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:13,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:45:13,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:45:13,903 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-07-19 21:45:14,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:14,018 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-07-19 21:45:14,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:45:14,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-19 21:45:14,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:14,029 INFO L225 Difference]: With dead ends: 54 [2020-07-19 21:45:14,029 INFO L226 Difference]: Without dead ends: 25 [2020-07-19 21:45:14,033 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 [2020-07-19 21:45:14,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-19 21:45:14,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-19 21:45:14,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-19 21:45:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-07-19 21:45:14,074 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-07-19 21:45:14,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:14,075 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-07-19 21:45:14,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:45:14,075 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-07-19 21:45:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-19 21:45:14,076 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:14,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:45:14,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:45:14,077 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:14,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:14,078 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-07-19 21:45:14,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:14,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307709311] [2020-07-19 21:45:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e3c561f [2020-07-19 21:45:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:45:14,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307709311] [2020-07-19 21:45:14,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:14,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:45:14,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190083042] [2020-07-19 21:45:14,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:45:14,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:14,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:45:14,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:45:14,193 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-07-19 21:45:14,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:14,326 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-07-19 21:45:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:45:14,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-07-19 21:45:14,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:14,328 INFO L225 Difference]: With dead ends: 40 [2020-07-19 21:45:14,329 INFO L226 Difference]: Without dead ends: 30 [2020-07-19 21:45:14,330 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 [2020-07-19 21:45:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-19 21:45:14,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-07-19 21:45:14,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-19 21:45:14,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-07-19 21:45:14,338 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2020-07-19 21:45:14,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:14,339 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-07-19 21:45:14,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:45:14,339 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-07-19 21:45:14,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-19 21:45:14,340 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:14,340 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] [2020-07-19 21:45:14,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:45:14,341 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:14,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:14,341 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-07-19 21:45:14,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:14,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677171495] [2020-07-19 21:45:14,342 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e3c561f [2020-07-19 21:45:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:45:14,377 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:45:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:45:14,410 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:45:14,441 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:45:14,441 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:45:14,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 21:45:14,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:45:14 BoogieIcfgContainer [2020-07-19 21:45:14,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:45:14,481 INFO L168 Benchmark]: Toolchain (without parser) took 1628.43 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 100.7 MB in the beginning and 104.6 MB in the end (delta: -3.9 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:14,482 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-19 21:45:14,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.49 ms. Allocated memory is still 136.3 MB. Free memory was 100.3 MB in the beginning and 89.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:14,484 INFO L168 Benchmark]: Boogie Preprocessor took 125.85 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 89.5 MB in the beginning and 176.0 MB in the end (delta: -86.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:14,485 INFO L168 Benchmark]: RCFGBuilder took 330.59 ms. Allocated memory is still 198.7 MB. Free memory was 176.0 MB in the beginning and 159.8 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:14,486 INFO L168 Benchmark]: TraceAbstraction took 896.31 ms. Allocated memory is still 198.7 MB. Free memory was 159.1 MB in the beginning and 104.6 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:14,490 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 269.49 ms. Allocated memory is still 136.3 MB. Free memory was 100.3 MB in the beginning and 89.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.85 ms. Allocated memory was 136.3 MB in the beginning and 198.7 MB in the end (delta: 62.4 MB). Free memory was 89.5 MB in the beginning and 176.0 MB in the end (delta: -86.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 330.59 ms. Allocated memory is still 198.7 MB. Free memory was 176.0 MB in the beginning and 159.8 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 896.31 ms. Allocated memory is still 198.7 MB. Free memory was 159.1 MB in the beginning and 104.6 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 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)=10, 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] int *a = malloc(sizeof(int)*N); [L29] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L29] COND TRUE i 2*N) VAL [\old(cond)=0, \old(N)=0, N=1] [L13] COND TRUE !(cond) VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] [L13] __VERIFIER_error() VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 39 SDslu, 11 SDs, 0 SdLazy, 64 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1480 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...