/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/res2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:56:36,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:56:36,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:56:37,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:56:37,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:56:37,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:56:37,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:56:37,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:56:37,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:56:37,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:56:37,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:56:37,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:56:37,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:56:37,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:56:37,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:56:37,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:56:37,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:56:37,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:56:37,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:56:37,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:56:37,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:56:37,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:56:37,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:56:37,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:56:37,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:56:37,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:56:37,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:56:37,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:56:37,082 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 16:56:37,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:56:37,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:56:37,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:56:37,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:56:37,132 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:56:37,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:56:37,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:56:37,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:56:37,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:56:37,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:56:37,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:56:37,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:56:37,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:56:37,135 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:56:37,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:56:37,135 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:56:37,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:56:37,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:56:37,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:56:37,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:56:37,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:56:37,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:37,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:56:37,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:56:37,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:56:37,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:56:37,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:56:37,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:56:37,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:56:37,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:56:37,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:56:37,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:56:37,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:56:37,438 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:56:37,438 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:56:37,439 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2f.c [2020-08-22 16:56:37,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7acad06cc/d15330c044834bbabb74afc0683b837c/FLAG68fc71f7b [2020-08-22 16:56:37,933 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:56:37,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res2f.c [2020-08-22 16:56:37,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7acad06cc/d15330c044834bbabb74afc0683b837c/FLAG68fc71f7b [2020-08-22 16:56:38,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7acad06cc/d15330c044834bbabb74afc0683b837c [2020-08-22 16:56:38,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:56:38,281 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:56:38,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:38,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:56:38,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:56:38,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@163ad1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38, skipping insertion in model container [2020-08-22 16:56:38,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:56:38,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:56:38,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:38,518 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:56:38,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:38,655 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:56:38,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38 WrapperNode [2020-08-22 16:56:38,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:38,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:56:38,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:56:38,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:56:38,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:56:38,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:56:38,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:56:38,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:56:38,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (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 16:56:38,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:56:38,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:56:38,790 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:56:38,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:56:38,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:56:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:56:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:56:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:56:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:56:38,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:56:38,791 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:56:38,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:56:38,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:56:38,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:56:38,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:56:38,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:56:38,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:56:38,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:56:38,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:56:39,146 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:56:39,147 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 16:56:39,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:39 BoogieIcfgContainer [2020-08-22 16:56:39,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:56:39,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:56:39,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:56:39,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:56:39,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:56:38" (1/3) ... [2020-08-22 16:56:39,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b02b94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:39, skipping insertion in model container [2020-08-22 16:56:39,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (2/3) ... [2020-08-22 16:56:39,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b02b94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:39, skipping insertion in model container [2020-08-22 16:56:39,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:39" (3/3) ... [2020-08-22 16:56:39,171 INFO L109 eAbstractionObserver]: Analyzing ICFG res2f.c [2020-08-22 16:56:39,181 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:56:39,187 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:56:39,200 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:56:39,222 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:56:39,222 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:56:39,223 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:56:39,223 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:56:39,223 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:56:39,223 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:56:39,223 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:56:39,223 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:56:39,244 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-22 16:56:39,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 16:56:39,252 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:39,253 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] [2020-08-22 16:56:39,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:39,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:39,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1797528887, now seen corresponding path program 1 times [2020-08-22 16:56:39,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:39,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201290113] [2020-08-22 16:56:39,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:39,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:39,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:39,497 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 16:56:39,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201290113] [2020-08-22 16:56:39,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:39,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:39,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053641324] [2020-08-22 16:56:39,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:39,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:39,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:39,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:39,528 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-08-22 16:56:39,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:39,677 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-08-22 16:56:39,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:39,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-08-22 16:56:39,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:39,688 INFO L225 Difference]: With dead ends: 76 [2020-08-22 16:56:39,689 INFO L226 Difference]: Without dead ends: 36 [2020-08-22 16:56:39,692 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 16:56:39,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-22 16:56:39,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-08-22 16:56:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-22 16:56:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-08-22 16:56:39,730 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 29 [2020-08-22 16:56:39,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:39,731 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-08-22 16:56:39,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:39,731 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-08-22 16:56:39,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 16:56:39,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:39,732 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] [2020-08-22 16:56:39,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:56:39,733 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:39,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:39,734 INFO L82 PathProgramCache]: Analyzing trace with hash 120259143, now seen corresponding path program 1 times [2020-08-22 16:56:39,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:39,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493881607] [2020-08-22 16:56:39,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:39,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:39,867 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 16:56:39,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493881607] [2020-08-22 16:56:39,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:39,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:56:39,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718839608] [2020-08-22 16:56:39,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:56:39,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:39,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:56:39,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:56:39,872 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2020-08-22 16:56:40,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:40,133 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2020-08-22 16:56:40,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:56:40,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-08-22 16:56:40,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:40,135 INFO L225 Difference]: With dead ends: 69 [2020-08-22 16:56:40,135 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 16:56:40,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:56:40,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 16:56:40,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-08-22 16:56:40,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-22 16:56:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-08-22 16:56:40,160 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 29 [2020-08-22 16:56:40,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:40,161 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-08-22 16:56:40,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:56:40,162 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-08-22 16:56:40,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 16:56:40,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:40,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:56:40,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:56:40,165 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:40,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:40,166 INFO L82 PathProgramCache]: Analyzing trace with hash -774790125, now seen corresponding path program 1 times [2020-08-22 16:56:40,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:40,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708240371] [2020-08-22 16:56:40,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:40,284 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:40,349 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:40,384 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:56:40,385 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:56:40,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:56:40,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:56:40 BoogieIcfgContainer [2020-08-22 16:56:40,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:56:40,455 INFO L168 Benchmark]: Toolchain (without parser) took 2172.89 ms. Allocated memory was 141.0 MB in the beginning and 233.3 MB in the end (delta: 92.3 MB). Free memory was 104.2 MB in the beginning and 197.0 MB in the end (delta: -92.8 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,456 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.26 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 104.0 MB in the beginning and 183.9 MB in the end (delta: -79.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,458 INFO L168 Benchmark]: Boogie Preprocessor took 62.60 ms. Allocated memory is still 205.0 MB. Free memory was 183.9 MB in the beginning and 181.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,459 INFO L168 Benchmark]: RCFGBuilder took 434.74 ms. Allocated memory is still 205.0 MB. Free memory was 181.6 MB in the beginning and 160.9 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,460 INFO L168 Benchmark]: TraceAbstraction took 1288.45 ms. Allocated memory was 205.0 MB in the beginning and 233.3 MB in the end (delta: 28.3 MB). Free memory was 160.3 MB in the beginning and 197.0 MB in the end (delta: -36.7 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,465 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 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 373.26 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 104.0 MB in the beginning and 183.9 MB in the end (delta: -79.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.60 ms. Allocated memory is still 205.0 MB. Free memory was 183.9 MB in the beginning and 181.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 434.74 ms. Allocated memory is still 205.0 MB. Free memory was 181.6 MB in the beginning and 160.9 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1288.45 ms. Allocated memory was 205.0 MB in the beginning and 233.3 MB in the end (delta: 28.3 MB). Free memory was 160.3 MB in the beginning and 197.0 MB in the end (delta: -36.7 MB). Peak memory consumption was 74.2 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); [L28] int *b = malloc(sizeof(int)*N); [L29] int *c = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [\old(N)=0, a={-2:0}, b={-1:0}, c={5:0}, i=0, malloc(sizeof(int)*N)={-2:0}, malloc(sizeof(int)*N)={5:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={7:0}] [L32] COND TRUE i