/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/ifncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:44:35,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:44:35,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:44:35,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:44:35,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:44:35,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:44:35,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:44:35,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:44:35,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:44:35,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:44:35,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:44:35,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:44:35,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:44:35,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:44:35,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:44:35,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:44:35,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:44:35,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:44:35,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:44:35,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:44:35,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:44:35,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:44:35,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:44:35,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:44:35,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 19:44:35,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:44:35,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:44:35,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:44:35,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:44:35,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:44:35,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:44:35,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:44:35,187 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:44:35,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:44:35,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:44:35,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:44:35,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:44:35,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:44:35,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:44:35,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:44:35,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:44:35,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:44:35,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:44:35,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:44:35,192 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:44:35,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:44:35,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:44:35,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:44:35,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:44:35,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:44:35,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:44:35,194 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:44:35,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:44:35,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:44:35,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:44:35,532 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:44:35,532 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:44:35,533 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifncompf.c [2020-08-22 19:44:35,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbadc241/d1104d204cd84f42b5170bfa286a8164/FLAG72dae4036 [2020-08-22 19:44:36,040 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:44:36,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifncompf.c [2020-08-22 19:44:36,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbadc241/d1104d204cd84f42b5170bfa286a8164/FLAG72dae4036 [2020-08-22 19:44:36,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afbadc241/d1104d204cd84f42b5170bfa286a8164 [2020-08-22 19:44:36,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:44:36,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:44:36,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:44:36,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:44:36,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:44:36,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:44:36" (1/1) ... [2020-08-22 19:44:36,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:36, skipping insertion in model container [2020-08-22 19:44:36,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:44:36" (1/1) ... [2020-08-22 19:44:36,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:44:36,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:44:36,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:44:36,668 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:44:36,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:44:36,708 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:44:36,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:36 WrapperNode [2020-08-22 19:44:36,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:44:36,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:44:36,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:44:36,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:44:36,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:36" (1/1) ... [2020-08-22 19:44:36,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:36" (1/1) ... [2020-08-22 19:44:36,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:36" (1/1) ... [2020-08-22 19:44:36,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:36" (1/1) ... [2020-08-22 19:44:36,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:36" (1/1) ... [2020-08-22 19:44:36,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:36" (1/1) ... [2020-08-22 19:44:36,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:36" (1/1) ... [2020-08-22 19:44:36,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:44:36,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:44:36,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:44:36,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:44:36,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:44:36,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:44:36,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:44:36,910 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 19:44:36,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 19:44:36,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:44:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:44:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:44:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 19:44:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 19:44:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:44:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:44:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:44:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:44:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 19:44:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 19:44:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:44:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:44:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:44:37,283 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:44:37,284 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 19:44:37,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:44:37 BoogieIcfgContainer [2020-08-22 19:44:37,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:44:37,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:44:37,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:44:37,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:44:37,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:44:36" (1/3) ... [2020-08-22 19:44:37,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9040d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:44:37, skipping insertion in model container [2020-08-22 19:44:37,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:36" (2/3) ... [2020-08-22 19:44:37,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9040d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:44:37, skipping insertion in model container [2020-08-22 19:44:37,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:44:37" (3/3) ... [2020-08-22 19:44:37,298 INFO L109 eAbstractionObserver]: Analyzing ICFG ifncompf.c [2020-08-22 19:44:37,309 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:44:37,318 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:44:37,333 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:44:37,359 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:44:37,359 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:44:37,360 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:44:37,360 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:44:37,360 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:44:37,360 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:44:37,360 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:44:37,360 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:44:37,379 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-08-22 19:44:37,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 19:44:37,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:44:37,404 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] [2020-08-22 19:44:37,404 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:44:37,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:44:37,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1638267314, now seen corresponding path program 1 times [2020-08-22 19:44:37,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:44:37,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869447785] [2020-08-22 19:44:37,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:44:37,500 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:44:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:37,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:44:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:37,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 19:44:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:44:37,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869447785] [2020-08-22 19:44:37,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:44:37,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:44:37,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240185904] [2020-08-22 19:44:37,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:44:37,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:44:37,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:44:37,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:44:37,728 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 3 states. [2020-08-22 19:44:37,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:44:37,939 INFO L93 Difference]: Finished difference Result 141 states and 166 transitions. [2020-08-22 19:44:37,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:44:37,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-08-22 19:44:37,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:44:37,952 INFO L225 Difference]: With dead ends: 141 [2020-08-22 19:44:37,952 INFO L226 Difference]: Without dead ends: 72 [2020-08-22 19:44:37,957 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 [2020-08-22 19:44:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-22 19:44:38,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-08-22 19:44:38,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-22 19:44:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2020-08-22 19:44:38,009 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 37 [2020-08-22 19:44:38,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:44:38,010 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2020-08-22 19:44:38,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:44:38,011 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2020-08-22 19:44:38,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 19:44:38,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:44:38,013 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] [2020-08-22 19:44:38,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:44:38,014 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:44:38,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:44:38,014 INFO L82 PathProgramCache]: Analyzing trace with hash -556138909, now seen corresponding path program 1 times [2020-08-22 19:44:38,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:44:38,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860087760] [2020-08-22 19:44:38,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:44:38,018 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:44:38,040 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 19:44:38,040 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:44:38,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:44:38,064 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 19:44:38,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:44:38 BoogieIcfgContainer [2020-08-22 19:44:38,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:44:38,067 INFO L168 Benchmark]: Toolchain (without parser) took 1641.75 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 103.6 MB in the beginning and 114.1 MB in the end (delta: -10.6 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:38,069 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 147.3 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 19:44:38,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.14 ms. Allocated memory is still 147.3 MB. Free memory was 103.4 MB in the beginning and 92.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:38,071 INFO L168 Benchmark]: Boogie Preprocessor took 127.43 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.6 MB in the beginning and 181.4 MB in the end (delta: -88.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:38,071 INFO L168 Benchmark]: RCFGBuilder took 451.47 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 159.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:38,072 INFO L168 Benchmark]: TraceAbstraction took 774.40 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 114.1 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:38,076 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 147.3 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.14 ms. Allocated memory is still 147.3 MB. Free memory was 103.4 MB in the beginning and 92.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.43 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.6 MB in the beginning and 181.4 MB in the end (delta: -88.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 451.47 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 159.5 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 774.40 ms. Allocated memory is still 203.9 MB. Free memory was 158.8 MB in the beginning and 114.1 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 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); [L28] long long *c = malloc(sizeof(long long)*N); [L30] i=0 [L30] COND FALSE !(i