/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 18:05:18,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 18:05:18,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 18:05:18,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 18:05:18,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 18:05:18,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 18:05:18,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 18:05:18,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 18:05:18,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 18:05:18,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 18:05:18,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 18:05:18,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 18:05:18,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 18:05:18,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 18:05:18,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 18:05:18,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 18:05:18,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 18:05:18,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 18:05:18,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 18:05:18,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 18:05:18,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 18:05:18,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 18:05:18,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 18:05:18,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 18:05:18,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 18:05:18,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 18:05:18,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 18:05:18,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 18:05:18,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 18:05:18,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 18:05:18,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 18:05:18,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 18:05:18,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 18:05:18,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 18:05:18,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 18:05:18,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 18:05:18,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 18:05:18,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 18:05:18,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 18:05:18,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 18:05:18,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 18:05:18,500 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 18:05:18,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 18:05:18,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 18:05:18,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 18:05:18,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 18:05:18,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 18:05:18,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 18:05:18,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 18:05:18,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 18:05:18,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 18:05:18,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 18:05:18,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 18:05:18,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 18:05:18,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 18:05:18,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 18:05:18,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 18:05:18,514 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 18:05:18,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 18:05:18,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 18:05:18,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 18:05:18,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 18:05:18,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 18:05:18,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 18:05:18,515 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-17 18:05:18,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 18:05:18,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 18:05:18,804 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 18:05:18,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 18:05:18,806 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 18:05:18,806 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-07-17 18:05:18,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/225384149/e04f2460c2e3474087a1fce1dd882366/FLAG357bfd0b0 [2020-07-17 18:05:19,337 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 18:05:19,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss2f.c [2020-07-17 18:05:19,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/225384149/e04f2460c2e3474087a1fce1dd882366/FLAG357bfd0b0 [2020-07-17 18:05:19,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/225384149/e04f2460c2e3474087a1fce1dd882366 [2020-07-17 18:05:19,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 18:05:19,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 18:05:19,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 18:05:19,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 18:05:19,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 18:05:19,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:05:19" (1/1) ... [2020-07-17 18:05:19,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7add82dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:19, skipping insertion in model container [2020-07-17 18:05:19,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:05:19" (1/1) ... [2020-07-17 18:05:19,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 18:05:19,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 18:05:19,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:05:20,005 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 18:05:20,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:05:20,130 INFO L208 MainTranslator]: Completed translation [2020-07-17 18:05:20,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:20 WrapperNode [2020-07-17 18:05:20,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 18:05:20,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 18:05:20,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 18:05:20,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 18:05:20,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:20" (1/1) ... [2020-07-17 18:05:20,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:20" (1/1) ... [2020-07-17 18:05:20,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:20" (1/1) ... [2020-07-17 18:05:20,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:20" (1/1) ... [2020-07-17 18:05:20,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:20" (1/1) ... [2020-07-17 18:05:20,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:20" (1/1) ... [2020-07-17 18:05:20,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:20" (1/1) ... [2020-07-17 18:05:20,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 18:05:20,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 18:05:20,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 18:05:20,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 18:05:20,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:20" (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 18:05:20,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 18:05:20,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 18:05:20,241 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 18:05:20,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 18:05:20,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 18:05:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 18:05:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 18:05:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 18:05:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 18:05:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 18:05:20,242 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 18:05:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 18:05:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 18:05:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 18:05:20,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 18:05:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 18:05:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 18:05:20,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 18:05:20,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 18:05:20,643 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 18:05:20,643 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-17 18:05:20,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:05:20 BoogieIcfgContainer [2020-07-17 18:05:20,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 18:05:20,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 18:05:20,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 18:05:20,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 18:05:20,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 06:05:19" (1/3) ... [2020-07-17 18:05:20,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ce6918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:05:20, skipping insertion in model container [2020-07-17 18:05:20,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:20" (2/3) ... [2020-07-17 18:05:20,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ce6918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:05:20, skipping insertion in model container [2020-07-17 18:05:20,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:05:20" (3/3) ... [2020-07-17 18:05:20,661 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-07-17 18:05:20,669 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 18:05:20,674 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 18:05:20,689 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 18:05:20,711 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 18:05:20,712 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 18:05:20,712 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 18:05:20,712 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 18:05:20,712 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 18:05:20,712 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 18:05:20,712 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 18:05:20,713 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 18:05:20,730 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2020-07-17 18:05:20,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-17 18:05:20,743 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:05:20,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:05:20,744 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:05:20,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:05:20,749 INFO L82 PathProgramCache]: Analyzing trace with hash -456074008, now seen corresponding path program 1 times [2020-07-17 18:05:20,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:05:20,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680365775] [2020-07-17 18:05:20,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:05:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:05:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:05:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:05:20,984 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 18:05:20,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680365775] [2020-07-17 18:05:20,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:05:20,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 18:05:20,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702988715] [2020-07-17 18:05:20,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 18:05:20,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:05:21,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 18:05:21,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 18:05:21,016 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 3 states. [2020-07-17 18:05:21,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:05:21,267 INFO L93 Difference]: Finished difference Result 177 states and 208 transitions. [2020-07-17 18:05:21,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 18:05:21,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-07-17 18:05:21,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:05:21,279 INFO L225 Difference]: With dead ends: 177 [2020-07-17 18:05:21,279 INFO L226 Difference]: Without dead ends: 88 [2020-07-17 18:05:21,284 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 [2020-07-17 18:05:21,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-17 18:05:21,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-07-17 18:05:21,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-17 18:05:21,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2020-07-17 18:05:21,337 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 41 [2020-07-17 18:05:21,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:05:21,338 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2020-07-17 18:05:21,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 18:05:21,339 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2020-07-17 18:05:21,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-17 18:05:21,341 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:05:21,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:05:21,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 18:05:21,342 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:05:21,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:05:21,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1964521925, now seen corresponding path program 1 times [2020-07-17 18:05:21,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:05:21,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225598635] [2020-07-17 18:05:21,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:05:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:05:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:05:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:05:21,481 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 18:05:21,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225598635] [2020-07-17 18:05:21,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:05:21,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 18:05:21,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768640363] [2020-07-17 18:05:21,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 18:05:21,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:05:21,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 18:05:21,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 18:05:21,489 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand 5 states. [2020-07-17 18:05:21,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:05:21,883 INFO L93 Difference]: Finished difference Result 194 states and 212 transitions. [2020-07-17 18:05:21,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 18:05:21,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-07-17 18:05:21,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:05:21,887 INFO L225 Difference]: With dead ends: 194 [2020-07-17 18:05:21,887 INFO L226 Difference]: Without dead ends: 134 [2020-07-17 18:05:21,889 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 [2020-07-17 18:05:21,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-07-17 18:05:21,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 94. [2020-07-17 18:05:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-07-17 18:05:21,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2020-07-17 18:05:21,912 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 41 [2020-07-17 18:05:21,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:05:21,912 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2020-07-17 18:05:21,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 18:05:21,912 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2020-07-17 18:05:21,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-17 18:05:21,915 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:05:21,915 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, 1, 1] [2020-07-17 18:05:21,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 18:05:21,916 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:05:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:05:21,916 INFO L82 PathProgramCache]: Analyzing trace with hash -725795370, now seen corresponding path program 1 times [2020-07-17 18:05:21,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:05:21,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611811948] [2020-07-17 18:05:21,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:05:21,985 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 18:05:21,986 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-07-17 18:05:21,986 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 18:05:21,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 18:05:22,008 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-17 18:05:22,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 06:05:22 BoogieIcfgContainer [2020-07-17 18:05:22,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 18:05:22,012 INFO L168 Benchmark]: Toolchain (without parser) took 2273.05 ms. Allocated memory was 145.8 MB in the beginning and 235.4 MB in the end (delta: 89.7 MB). Free memory was 103.5 MB in the beginning and 169.3 MB in the end (delta: -65.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-07-17 18:05:22,013 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 122.3 MB in the beginning and 122.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-17 18:05:22,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.63 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 181.9 MB in the end (delta: -78.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-07-17 18:05:22,015 INFO L168 Benchmark]: Boogie Preprocessor took 43.20 ms. Allocated memory is still 202.9 MB. Free memory was 181.9 MB in the beginning and 179.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-17 18:05:22,016 INFO L168 Benchmark]: RCFGBuilder took 476.90 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 155.0 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-07-17 18:05:22,017 INFO L168 Benchmark]: TraceAbstraction took 1354.25 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 154.3 MB in the beginning and 169.3 MB in the end (delta: -14.9 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-07-17 18:05:22,021 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 145.8 MB. Free memory was 122.3 MB in the beginning and 122.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 390.63 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 103.1 MB in the beginning and 181.9 MB in the end (delta: -78.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.20 ms. Allocated memory is still 202.9 MB. Free memory was 181.9 MB in the beginning and 179.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 476.90 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 155.0 MB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1354.25 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 154.3 MB in the beginning and 169.3 MB in the end (delta: -14.9 MB). Peak memory consumption was 17.6 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 sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i