/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/res2of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:05,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:05,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:05,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:05,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:05,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:05,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:05,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:05,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:05,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:05,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:05,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:05,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:05,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:05,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:05,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:05,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:05,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:05,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:05,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:05,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:05,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:05,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:05,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:05,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:44:05,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:05,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:05,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:05,575 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 17:44:05,594 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:05,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:05,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:05,597 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:05,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:05,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:05,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:05,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:05,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:05,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:05,599 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:05,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:05,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:05,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:05,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:05,601 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:05,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:05,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:05,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:05,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:05,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:05,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:05,602 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:06,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:06,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:06,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:06,071 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:06,072 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:06,073 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2of.c [2020-09-04 17:44:06,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e483360a/13d3708aced4408ea9c070100f3a553b/FLAG398d9fea4 [2020-09-04 17:44:06,734 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:06,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res2of.c [2020-09-04 17:44:06,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e483360a/13d3708aced4408ea9c070100f3a553b/FLAG398d9fea4 [2020-09-04 17:44:07,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e483360a/13d3708aced4408ea9c070100f3a553b [2020-09-04 17:44:07,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:07,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:07,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:07,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:07,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:07,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b8ea72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07, skipping insertion in model container [2020-09-04 17:44:07,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:07,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:07,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:07,351 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:07,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:07,474 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:07,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07 WrapperNode [2020-09-04 17:44:07,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:07,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:07,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:07,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:07,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:07,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:07,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:07,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:07,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (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 17:44:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:07,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:08,099 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:08,100 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-04 17:44:08,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:08 BoogieIcfgContainer [2020-09-04 17:44:08,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:08,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:08,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:08,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:08,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:07" (1/3) ... [2020-09-04 17:44:08,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752a6fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:08, skipping insertion in model container [2020-09-04 17:44:08,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (2/3) ... [2020-09-04 17:44:08,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752a6fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:08, skipping insertion in model container [2020-09-04 17:44:08,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:08" (3/3) ... [2020-09-04 17:44:08,118 INFO L109 eAbstractionObserver]: Analyzing ICFG res2of.c [2020-09-04 17:44:08,130 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:08,143 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:08,171 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:08,202 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:08,203 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:08,203 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:08,203 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:08,203 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:08,203 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:08,203 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:08,203 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:08,225 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-09-04 17:44:08,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-04 17:44:08,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:08,241 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] [2020-09-04 17:44:08,241 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:08,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:08,248 INFO L82 PathProgramCache]: Analyzing trace with hash -386797637, now seen corresponding path program 1 times [2020-09-04 17:44:08,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:08,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972752641] [2020-09-04 17:44:08,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:08,338 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:08,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:08,570 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 17:44:08,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972752641] [2020-09-04 17:44:08,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:08,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:08,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680304076] [2020-09-04 17:44:08,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:08,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:08,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:08,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:08,609 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2020-09-04 17:44:08,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:08,865 INFO L93 Difference]: Finished difference Result 167 states and 194 transitions. [2020-09-04 17:44:08,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:08,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-09-04 17:44:08,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:08,880 INFO L225 Difference]: With dead ends: 167 [2020-09-04 17:44:08,880 INFO L226 Difference]: Without dead ends: 80 [2020-09-04 17:44:08,886 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 17:44:08,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-04 17:44:08,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-09-04 17:44:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-04 17:44:08,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2020-09-04 17:44:08,951 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 43 [2020-09-04 17:44:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:08,952 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2020-09-04 17:44:08,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2020-09-04 17:44:08,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-04 17:44:08,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:08,955 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] [2020-09-04 17:44:08,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:08,956 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:08,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:08,957 INFO L82 PathProgramCache]: Analyzing trace with hash 614001090, now seen corresponding path program 1 times [2020-09-04 17:44:08,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:08,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125806851] [2020-09-04 17:44:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:08,961 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:09,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:09,178 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 17:44:09,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125806851] [2020-09-04 17:44:09,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:09,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:09,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506685169] [2020-09-04 17:44:09,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:09,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:09,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:09,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:09,190 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand 5 states. [2020-09-04 17:44:09,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:09,541 INFO L93 Difference]: Finished difference Result 164 states and 179 transitions. [2020-09-04 17:44:09,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:09,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-09-04 17:44:09,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:09,544 INFO L225 Difference]: With dead ends: 164 [2020-09-04 17:44:09,544 INFO L226 Difference]: Without dead ends: 116 [2020-09-04 17:44:09,546 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 17:44:09,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-04 17:44:09,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 86. [2020-09-04 17:44:09,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-04 17:44:09,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-09-04 17:44:09,565 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 43 [2020-09-04 17:44:09,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:09,566 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-09-04 17:44:09,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:09,566 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-09-04 17:44:09,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-04 17:44:09,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:09,569 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, 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 17:44:09,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:09,570 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:09,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:09,570 INFO L82 PathProgramCache]: Analyzing trace with hash -849907375, now seen corresponding path program 1 times [2020-09-04 17:44:09,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:09,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650820554] [2020-09-04 17:44:09,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:09,601 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:09,740 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:09,798 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:09,844 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:44:09,844 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:09,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:09,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:09 BoogieIcfgContainer [2020-09-04 17:44:09,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:09,875 INFO L168 Benchmark]: Toolchain (without parser) took 2805.89 ms. Allocated memory was 140.0 MB in the beginning and 235.9 MB in the end (delta: 95.9 MB). Free memory was 103.3 MB in the beginning and 165.8 MB in the end (delta: -62.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:09,876 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:44:09,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 407.96 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 181.8 MB in the end (delta: -78.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:09,878 INFO L168 Benchmark]: Boogie Preprocessor took 58.70 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:09,879 INFO L168 Benchmark]: RCFGBuilder took 570.60 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 154.8 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:09,880 INFO L168 Benchmark]: TraceAbstraction took 1763.62 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 154.8 MB in the beginning and 165.8 MB in the end (delta: -11.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:09,884 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 407.96 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 181.8 MB in the end (delta: -78.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.70 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 570.60 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 154.8 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1763.62 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 154.8 MB in the beginning and 165.8 MB in the end (delta: -11.0 MB). Peak memory consumption was 22.0 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); [L28] int *b = malloc(sizeof(int)*N); [L29] int *c = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i