/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/eqn4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 14:52:59,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 14:52:59,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 14:52:59,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 14:52:59,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 14:52:59,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 14:52:59,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 14:52:59,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 14:52:59,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 14:52:59,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 14:52:59,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 14:52:59,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 14:52:59,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 14:52:59,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 14:52:59,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 14:52:59,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 14:52:59,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 14:52:59,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 14:52:59,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 14:52:59,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 14:52:59,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 14:52:59,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 14:52:59,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 14:52:59,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 14:52:59,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 14:52:59,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 14:52:59,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 14:52:59,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 14:52:59,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 14:52:59,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 14:52:59,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 14:52:59,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 14:52:59,392 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 14:52:59,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 14:52:59,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 14:52:59,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 14:52:59,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 14:52:59,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 14:52:59,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 14:52:59,394 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 14:52:59,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 14:52:59,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 14:52:59,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 14:52:59,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 14:52:59,395 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 14:52:59,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 14:52:59,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 14:52:59,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:52:59,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 14:52:59,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 14:52:59,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 14:52:59,400 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 14:52:59,703 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 14:52:59,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 14:52:59,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 14:52:59,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 14:52:59,726 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 14:52:59,727 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn4f.c [2020-07-17 14:52:59,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed30ea978/274f5d30b41449af81cc3260530d5c11/FLAG71f00df91 [2020-07-17 14:53:00,306 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 14:53:00,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn4f.c [2020-07-17 14:53:00,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed30ea978/274f5d30b41449af81cc3260530d5c11/FLAG71f00df91 [2020-07-17 14:53:00,702 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed30ea978/274f5d30b41449af81cc3260530d5c11 [2020-07-17 14:53:00,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 14:53:00,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 14:53:00,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 14:53:00,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 14:53:00,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 14:53:00,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:53:00" (1/1) ... [2020-07-17 14:53:00,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@440771f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:00, skipping insertion in model container [2020-07-17 14:53:00,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:53:00" (1/1) ... [2020-07-17 14:53:00,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 14:53:00,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 14:53:00,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:53:00,939 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 14:53:00,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:53:00,977 INFO L208 MainTranslator]: Completed translation [2020-07-17 14:53:00,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:00 WrapperNode [2020-07-17 14:53:00,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 14:53:00,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 14:53:00,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 14:53:00,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 14:53:01,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:00" (1/1) ... [2020-07-17 14:53:01,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:00" (1/1) ... [2020-07-17 14:53:01,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:00" (1/1) ... [2020-07-17 14:53:01,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:00" (1/1) ... [2020-07-17 14:53:01,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:00" (1/1) ... [2020-07-17 14:53:01,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:00" (1/1) ... [2020-07-17 14:53:01,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:00" (1/1) ... [2020-07-17 14:53:01,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 14:53:01,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 14:53:01,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 14:53:01,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 14:53:01,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:53:01,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 14:53:01,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 14:53:01,192 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 14:53:01,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 14:53:01,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 14:53:01,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 14:53:01,193 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 14:53:01,193 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 14:53:01,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 14:53:01,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 14:53:01,193 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 14:53:01,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 14:53:01,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 14:53:01,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 14:53:01,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 14:53:01,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 14:53:01,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 14:53:01,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 14:53:01,554 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 14:53:01,554 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-17 14:53:01,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:53:01 BoogieIcfgContainer [2020-07-17 14:53:01,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 14:53:01,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 14:53:01,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 14:53:01,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 14:53:01,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 02:53:00" (1/3) ... [2020-07-17 14:53:01,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afead4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:53:01, skipping insertion in model container [2020-07-17 14:53:01,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:00" (2/3) ... [2020-07-17 14:53:01,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afead4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:53:01, skipping insertion in model container [2020-07-17 14:53:01,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:53:01" (3/3) ... [2020-07-17 14:53:01,567 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn4f.c [2020-07-17 14:53:01,579 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 14:53:01,585 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 14:53:01,598 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 14:53:01,620 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 14:53:01,621 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 14:53:01,622 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 14:53:01,622 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 14:53:01,622 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 14:53:01,622 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 14:53:01,623 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 14:53:01,623 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 14:53:01,641 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-07-17 14:53:01,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-17 14:53:01,651 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:53:01,652 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] [2020-07-17 14:53:01,653 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:53:01,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:53:01,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1558850377, now seen corresponding path program 1 times [2020-07-17 14:53:01,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:53:01,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187576587] [2020-07-17 14:53:01,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:53:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:53:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:53:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:53:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:53:01,921 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:53:01,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187576587] [2020-07-17 14:53:01,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:53:01,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 14:53:01,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794721837] [2020-07-17 14:53:01,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 14:53:01,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:53:01,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 14:53:01,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 14:53:01,951 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2020-07-17 14:53:02,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:53:02,154 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2020-07-17 14:53:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 14:53:02,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-07-17 14:53:02,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:53:02,165 INFO L225 Difference]: With dead ends: 109 [2020-07-17 14:53:02,166 INFO L226 Difference]: Without dead ends: 56 [2020-07-17 14:53:02,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 14:53:02,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-17 14:53:02,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-17 14:53:02,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-17 14:53:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-07-17 14:53:02,220 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 35 [2020-07-17 14:53:02,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:53:02,220 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-07-17 14:53:02,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 14:53:02,221 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-07-17 14:53:02,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-17 14:53:02,222 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:53:02,222 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] [2020-07-17 14:53:02,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 14:53:02,223 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:53:02,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:53:02,224 INFO L82 PathProgramCache]: Analyzing trace with hash -574468364, now seen corresponding path program 1 times [2020-07-17 14:53:02,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:53:02,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922659836] [2020-07-17 14:53:02,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:53:02,251 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:53:02,251 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-07-17 14:53:02,252 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 14:53:02,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 14:53:02,272 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-17 14:53:02,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 02:53:02 BoogieIcfgContainer [2020-07-17 14:53:02,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 14:53:02,275 INFO L168 Benchmark]: Toolchain (without parser) took 1559.63 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 105.1 MB in the beginning and 123.3 MB in the end (delta: -18.2 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. [2020-07-17 14:53:02,276 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 146.8 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 14:53:02,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.88 ms. Allocated memory is still 146.8 MB. Free memory was 104.7 MB in the beginning and 94.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-17 14:53:02,279 INFO L168 Benchmark]: Boogie Preprocessor took 142.98 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 94.4 MB in the beginning and 182.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-17 14:53:02,279 INFO L168 Benchmark]: RCFGBuilder took 437.56 ms. Allocated memory is still 205.0 MB. Free memory was 182.6 MB in the beginning and 163.1 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-07-17 14:53:02,280 INFO L168 Benchmark]: TraceAbstraction took 712.73 ms. Allocated memory is still 205.0 MB. Free memory was 163.1 MB in the beginning and 123.3 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. [2020-07-17 14:53:02,285 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 146.8 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.88 ms. Allocated memory is still 146.8 MB. Free memory was 104.7 MB in the beginning and 94.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.98 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 94.4 MB in the beginning and 182.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 437.56 ms. Allocated memory is still 205.0 MB. Free memory was 182.6 MB in the beginning and 163.1 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 712.73 ms. Allocated memory is still 205.0 MB. Free memory was 163.1 MB in the beginning and 123.3 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] a[0] = 8 [L30] b[0] = 0 [L31] i=1 [L31] COND FALSE !(i