/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/condgf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:43:27,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:43:27,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:43:27,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:43:27,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:43:27,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:43:27,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:43:27,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:43:27,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:43:27,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:43:27,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:43:27,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:43:27,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:43:27,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:43:27,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:43:27,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:43:27,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:43:27,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:43:27,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:43:27,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:43:27,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:43:27,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:43:27,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:43:27,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:43:27,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:43:27,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:43:27,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:43:27,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:43:27,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:43:27,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-04 17:43:27,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:43:27,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:43:27,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:43:27,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:43:27,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:43:27,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:43:27,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:43:27,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:43:27,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:43:27,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:43:27,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:43:27,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:43:27,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:43:27,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:43:27,666 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:43:27,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:43:27,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:43:27,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:43:27,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:43:27,668 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:43:27,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:43:27,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:43:27,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:43:27,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:43:27,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:43:27,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:43:27,669 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:43:28,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:43:28,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:43:28,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:43:28,094 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:43:28,095 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:43:28,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condgf.c [2020-09-04 17:43:28,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d7a1cd69/5ee5e8e53a0a465497c95afce2376061/FLAGbb3019a5c [2020-09-04 17:43:28,726 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:43:28,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condgf.c [2020-09-04 17:43:28,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d7a1cd69/5ee5e8e53a0a465497c95afce2376061/FLAGbb3019a5c [2020-09-04 17:43:29,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d7a1cd69/5ee5e8e53a0a465497c95afce2376061 [2020-09-04 17:43:29,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:43:29,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:43:29,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:29,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:43:29,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:43:29,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:29" (1/1) ... [2020-09-04 17:43:29,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e6064c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:29, skipping insertion in model container [2020-09-04 17:43:29,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:29" (1/1) ... [2020-09-04 17:43:29,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:43:29,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:43:29,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:29,358 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:43:29,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:29,405 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:43:29,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:29 WrapperNode [2020-09-04 17:43:29,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:29,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:43:29,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:43:29,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:43:29,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:29" (1/1) ... [2020-09-04 17:43:29,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:29" (1/1) ... [2020-09-04 17:43:29,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:29" (1/1) ... [2020-09-04 17:43:29,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:29" (1/1) ... [2020-09-04 17:43:29,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:29" (1/1) ... [2020-09-04 17:43:29,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:29" (1/1) ... [2020-09-04 17:43:29,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:29" (1/1) ... [2020-09-04 17:43:29,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:43:29,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:43:29,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:43:29,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:43:29,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:43:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:43:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:43:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:43:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:43:29,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:43:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:43:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:43:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:43:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:43:29,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:43:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:43:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:43:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:43:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:43:29,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:43:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:43:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:43:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:43:29,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:43:29,932 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:43:29,933 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 17:43:29,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:29 BoogieIcfgContainer [2020-09-04 17:43:29,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:43:29,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:43:29,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:43:29,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:43:29,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:43:29" (1/3) ... [2020-09-04 17:43:29,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a07c09c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:29, skipping insertion in model container [2020-09-04 17:43:29,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:29" (2/3) ... [2020-09-04 17:43:29,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a07c09c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:29, skipping insertion in model container [2020-09-04 17:43:29,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:29" (3/3) ... [2020-09-04 17:43:29,950 INFO L109 eAbstractionObserver]: Analyzing ICFG condgf.c [2020-09-04 17:43:29,964 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:43:29,974 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:43:29,999 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:43:30,037 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:43:30,037 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:43:30,037 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:43:30,037 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:43:30,041 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:43:30,044 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:43:30,044 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:43:30,044 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:43:30,074 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-04 17:43:30,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 17:43:30,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:30,089 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] [2020-09-04 17:43:30,089 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:30,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:30,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1924334027, now seen corresponding path program 1 times [2020-09-04 17:43:30,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:30,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881730327] [2020-09-04 17:43:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:30,173 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:30,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:30,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:30,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:43:30,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881730327] [2020-09-04 17:43:30,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:30,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:43:30,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276744611] [2020-09-04 17:43:30,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:43:30,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:30,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:43:30,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:43:30,396 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-09-04 17:43:30,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:30,626 INFO L93 Difference]: Finished difference Result 135 states and 156 transitions. [2020-09-04 17:43:30,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:43:30,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-09-04 17:43:30,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:30,639 INFO L225 Difference]: With dead ends: 135 [2020-09-04 17:43:30,640 INFO L226 Difference]: Without dead ends: 67 [2020-09-04 17:43:30,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:43:30,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-04 17:43:30,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-09-04 17:43:30,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-04 17:43:30,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-09-04 17:43:30,697 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 35 [2020-09-04 17:43:30,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:30,698 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-09-04 17:43:30,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:43:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-09-04 17:43:30,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 17:43:30,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:30,700 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] [2020-09-04 17:43:30,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:43:30,701 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:30,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:30,701 INFO L82 PathProgramCache]: Analyzing trace with hash -977702175, now seen corresponding path program 1 times [2020-09-04 17:43:30,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:30,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506004091] [2020-09-04 17:43:30,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:30,705 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:30,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:30,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:30,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:43:30,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506004091] [2020-09-04 17:43:30,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:30,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:43:30,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115404632] [2020-09-04 17:43:30,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:43:30,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:30,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:43:30,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:43:30,836 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-09-04 17:43:31,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:31,110 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2020-09-04 17:43:31,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:43:31,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-04 17:43:31,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:31,115 INFO L225 Difference]: With dead ends: 137 [2020-09-04 17:43:31,115 INFO L226 Difference]: Without dead ends: 98 [2020-09-04 17:43:31,117 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 [2020-09-04 17:43:31,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-04 17:43:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 70. [2020-09-04 17:43:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-04 17:43:31,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-04 17:43:31,141 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 35 [2020-09-04 17:43:31,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:31,142 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-04 17:43:31,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:43:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-04 17:43:31,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-04 17:43:31,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:31,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:43:31,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:43:31,145 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:31,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:31,145 INFO L82 PathProgramCache]: Analyzing trace with hash -269448694, now seen corresponding path program 1 times [2020-09-04 17:43:31,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:31,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782821932] [2020-09-04 17:43:31,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:31,181 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:31,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:31,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:43:31,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782821932] [2020-09-04 17:43:31,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:31,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-04 17:43:31,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631660055] [2020-09-04 17:43:31,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 17:43:31,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:31,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 17:43:31,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-09-04 17:43:31,818 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 17 states. [2020-09-04 17:43:33,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:33,206 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2020-09-04 17:43:33,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-04 17:43:33,206 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 59 [2020-09-04 17:43:33,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:33,208 INFO L225 Difference]: With dead ends: 143 [2020-09-04 17:43:33,208 INFO L226 Difference]: Without dead ends: 115 [2020-09-04 17:43:33,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=284, Invalid=906, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 17:43:33,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-04 17:43:33,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 98. [2020-09-04 17:43:33,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-04 17:43:33,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2020-09-04 17:43:33,232 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 59 [2020-09-04 17:43:33,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:33,233 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2020-09-04 17:43:33,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 17:43:33,233 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2020-09-04 17:43:33,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-04 17:43:33,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:33,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:43:33,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:43:33,235 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:33,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:33,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1693383620, now seen corresponding path program 1 times [2020-09-04 17:43:33,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:33,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576088933] [2020-09-04 17:43:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:33,242 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:43:33,294 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:43:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:43:33,347 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:43:33,383 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:43:33,384 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:43:33,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 17:43:33,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:43:33 BoogieIcfgContainer [2020-09-04 17:43:33,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:43:33,411 INFO L168 Benchmark]: Toolchain (without parser) took 4329.99 ms. Allocated memory was 140.0 MB in the beginning and 246.9 MB in the end (delta: 107.0 MB). Free memory was 102.8 MB in the beginning and 183.0 MB in the end (delta: -80.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:33,412 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-04 17:43:33,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.02 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 92.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:33,414 INFO L168 Benchmark]: Boogie Preprocessor took 129.98 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 92.2 MB in the beginning and 181.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:33,415 INFO L168 Benchmark]: RCFGBuilder took 404.03 ms. Allocated memory is still 203.9 MB. Free memory was 181.5 MB in the beginning and 160.3 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:33,416 INFO L168 Benchmark]: TraceAbstraction took 3465.52 ms. Allocated memory was 203.9 MB in the beginning and 246.9 MB in the end (delta: 43.0 MB). Free memory was 159.4 MB in the beginning and 183.0 MB in the end (delta: -23.6 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:33,420 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 325.02 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 92.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.98 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 92.2 MB in the beginning and 181.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.03 ms. Allocated memory is still 203.9 MB. Free memory was 181.5 MB in the beginning and 160.3 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3465.52 ms. Allocated memory was 203.9 MB in the beginning and 246.9 MB in the end (delta: 43.0 MB). Free memory was 159.4 MB in the beginning and 183.0 MB in the end (delta: -23.6 MB). Peak memory consumption was 19.4 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; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i