/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/indp3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 18:04:18,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 18:04:18,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 18:04:18,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 18:04:18,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 18:04:18,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 18:04:18,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 18:04:18,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 18:04:18,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 18:04:18,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 18:04:18,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 18:04:18,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 18:04:18,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 18:04:18,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 18:04:18,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 18:04:18,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 18:04:18,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 18:04:18,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 18:04:18,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 18:04:18,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 18:04:18,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 18:04:18,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 18:04:18,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 18:04:18,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 18:04:18,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 18:04:18,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 18:04:18,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 18:04:18,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 18:04:18,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 18:04:18,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 18:04:18,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 18:04:18,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 18:04:18,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 18:04:18,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 18:04:18,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 18:04:18,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 18:04:18,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 18:04:18,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 18:04:18,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 18:04:18,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 18:04:18,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 18:04:18,847 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 18:04:18,856 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 18:04:18,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 18:04:18,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 18:04:18,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 18:04:18,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 18:04:18,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 18:04:18,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 18:04:18,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 18:04:18,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 18:04:18,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 18:04:18,859 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 18:04:18,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 18:04:18,860 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 18:04:18,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 18:04:18,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 18:04:18,860 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 18:04:18,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 18:04:18,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 18:04:18,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 18:04:18,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 18:04:18,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 18:04:18,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 18:04:18,862 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 18:04:19,141 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 18:04:19,153 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 18:04:19,158 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 18:04:19,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 18:04:19,160 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 18:04:19,161 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp3f.c [2020-07-17 18:04:19,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34ca2950d/189cfa7ded2c403c8c4c885ba93b239e/FLAG1a4630db9 [2020-07-17 18:04:19,726 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 18:04:19,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp3f.c [2020-07-17 18:04:19,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34ca2950d/189cfa7ded2c403c8c4c885ba93b239e/FLAG1a4630db9 [2020-07-17 18:04:20,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34ca2950d/189cfa7ded2c403c8c4c885ba93b239e [2020-07-17 18:04:20,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 18:04:20,115 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 18:04:20,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 18:04:20,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 18:04:20,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 18:04:20,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:04:20" (1/1) ... [2020-07-17 18:04:20,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@373bc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:20, skipping insertion in model container [2020-07-17 18:04:20,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:04:20" (1/1) ... [2020-07-17 18:04:20,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 18:04:20,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 18:04:20,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:04:20,377 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 18:04:20,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:04:20,412 INFO L208 MainTranslator]: Completed translation [2020-07-17 18:04:20,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:20 WrapperNode [2020-07-17 18:04:20,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 18:04:20,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 18:04:20,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 18:04:20,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 18:04:20,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:20" (1/1) ... [2020-07-17 18:04:20,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:20" (1/1) ... [2020-07-17 18:04:20,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:20" (1/1) ... [2020-07-17 18:04:20,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:20" (1/1) ... [2020-07-17 18:04:20,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:20" (1/1) ... [2020-07-17 18:04:20,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:20" (1/1) ... [2020-07-17 18:04:20,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:20" (1/1) ... [2020-07-17 18:04:20,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 18:04:20,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 18:04:20,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 18:04:20,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 18:04:20,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:20" (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 18:04:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 18:04:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 18:04:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 18:04:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 18:04:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 18:04:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 18:04:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 18:04:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 18:04:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 18:04:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 18:04:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 18:04:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 18:04:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 18:04:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 18:04:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 18:04:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 18:04:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 18:04:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 18:04:20,925 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 18:04:20,926 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-17 18:04:20,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:04:20 BoogieIcfgContainer [2020-07-17 18:04:20,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 18:04:20,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 18:04:20,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 18:04:20,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 18:04:20,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 06:04:20" (1/3) ... [2020-07-17 18:04:20,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af39533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:04:20, skipping insertion in model container [2020-07-17 18:04:20,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:20" (2/3) ... [2020-07-17 18:04:20,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af39533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:04:20, skipping insertion in model container [2020-07-17 18:04:20,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:04:20" (3/3) ... [2020-07-17 18:04:20,939 INFO L109 eAbstractionObserver]: Analyzing ICFG indp3f.c [2020-07-17 18:04:20,949 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 18:04:20,956 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 18:04:20,967 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 18:04:20,988 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 18:04:20,988 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 18:04:20,988 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 18:04:20,988 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 18:04:20,988 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 18:04:20,989 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 18:04:20,989 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 18:04:20,989 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 18:04:21,005 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-07-17 18:04:21,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-17 18:04:21,016 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:04:21,018 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 18:04:21,018 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:04:21,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:04:21,023 INFO L82 PathProgramCache]: Analyzing trace with hash 13261349, now seen corresponding path program 1 times [2020-07-17 18:04:21,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:04:21,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826532005] [2020-07-17 18:04:21,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:04:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:21,253 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 18:04:21,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826532005] [2020-07-17 18:04:21,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:04:21,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 18:04:21,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847647826] [2020-07-17 18:04:21,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 18:04:21,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:04:21,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 18:04:21,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 18:04:21,286 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2020-07-17 18:04:21,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:04:21,486 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2020-07-17 18:04:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 18:04:21,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-07-17 18:04:21,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:04:21,498 INFO L225 Difference]: With dead ends: 125 [2020-07-17 18:04:21,499 INFO L226 Difference]: Without dead ends: 64 [2020-07-17 18:04:21,503 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 18:04:21,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-17 18:04:21,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-07-17 18:04:21,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-17 18:04:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-07-17 18:04:21,553 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 35 [2020-07-17 18:04:21,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:04:21,554 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-07-17 18:04:21,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 18:04:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-07-17 18:04:21,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-17 18:04:21,556 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:04:21,556 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 18:04:21,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 18:04:21,557 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:04:21,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:04:21,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1010060324, now seen corresponding path program 1 times [2020-07-17 18:04:21,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:04:21,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282308120] [2020-07-17 18:04:21,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:04:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:21,703 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 18:04:21,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282308120] [2020-07-17 18:04:21,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:04:21,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 18:04:21,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160439258] [2020-07-17 18:04:21,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 18:04:21,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:04:21,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 18:04:21,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 18:04:21,715 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-07-17 18:04:22,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:04:22,047 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2020-07-17 18:04:22,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 18:04:22,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-07-17 18:04:22,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:04:22,054 INFO L225 Difference]: With dead ends: 130 [2020-07-17 18:04:22,055 INFO L226 Difference]: Without dead ends: 92 [2020-07-17 18:04:22,057 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 18:04:22,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-17 18:04:22,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 68. [2020-07-17 18:04:22,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-17 18:04:22,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-07-17 18:04:22,106 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 35 [2020-07-17 18:04:22,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:04:22,109 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-07-17 18:04:22,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 18:04:22,109 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-07-17 18:04:22,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-17 18:04:22,111 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:04:22,112 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] [2020-07-17 18:04:22,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 18:04:22,114 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:04:22,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:04:22,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1919266361, now seen corresponding path program 1 times [2020-07-17 18:04:22,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:04:22,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846605375] [2020-07-17 18:04:22,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:04:22,145 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 18:04:22,145 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-07-17 18:04:22,146 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 18:04:22,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 18:04:22,169 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-17 18:04:22,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 06:04:22 BoogieIcfgContainer [2020-07-17 18:04:22,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 18:04:22,172 INFO L168 Benchmark]: Toolchain (without parser) took 2057.67 ms. Allocated memory was 134.7 MB in the beginning and 223.9 MB in the end (delta: 89.1 MB). Free memory was 99.9 MB in the beginning and 192.7 MB in the end (delta: -92.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 18:04:22,174 INFO L168 Benchmark]: CDTParser took 0.86 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 117.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 18:04:22,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.10 ms. Allocated memory is still 134.7 MB. Free memory was 99.4 MB in the beginning and 88.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:22,176 INFO L168 Benchmark]: Boogie Preprocessor took 110.55 ms. Allocated memory was 134.7 MB in the beginning and 198.2 MB in the end (delta: 63.4 MB). Free memory was 88.8 MB in the beginning and 176.0 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:22,177 INFO L168 Benchmark]: RCFGBuilder took 407.14 ms. Allocated memory is still 198.2 MB. Free memory was 176.0 MB in the beginning and 156.0 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:22,178 INFO L168 Benchmark]: TraceAbstraction took 1237.78 ms. Allocated memory was 198.2 MB in the beginning and 223.9 MB in the end (delta: 25.7 MB). Free memory was 155.2 MB in the beginning and 192.7 MB in the end (delta: -37.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 18:04:22,182 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 117.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.10 ms. Allocated memory is still 134.7 MB. Free memory was 99.4 MB in the beginning and 88.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.55 ms. Allocated memory was 134.7 MB in the beginning and 198.2 MB in the end (delta: 63.4 MB). Free memory was 88.8 MB in the beginning and 176.0 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.14 ms. Allocated memory is still 198.2 MB. Free memory was 176.0 MB in the beginning and 156.0 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1237.78 ms. Allocated memory was 198.2 MB in the beginning and 223.9 MB in the end (delta: 25.7 MB). Free memory was 155.2 MB in the beginning and 192.7 MB in the end (delta: -37.4 MB). There was no memory consumed. 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); [L28] i=0 [L28] COND TRUE i