/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/eqn4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:18,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:18,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:18,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:18,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:18,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:18,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:18,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:18,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:18,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:18,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:18,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:18,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:18,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:18,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:18,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:18,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:18,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:18,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:18,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:18,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:18,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:18,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:18,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:18,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:42:18,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:42:18,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:42:18,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:42:18,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:42:18,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:42:18,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:42:18,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:42:18,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:42:18,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:18,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:18,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:18,927 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:42:18,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:18,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:18,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:18,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:18,975 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:18,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:18,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:18,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:18,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:18,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:18,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:18,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:18,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:18,979 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:18,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:18,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:18,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:18,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:18,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:18,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:18,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:18,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:18,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:18,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:18,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:18,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:18,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:18,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:18,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:18,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:19,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:19,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:19,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:19,466 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:19,467 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:19,468 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn4f.c [2020-09-04 13:42:19,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deecc7d5e/24db938434fc44d989327fd9e5bbd89f/FLAGb9ccbce2a [2020-09-04 13:42:20,097 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:20,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/eqn4f.c [2020-09-04 13:42:20,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deecc7d5e/24db938434fc44d989327fd9e5bbd89f/FLAGb9ccbce2a [2020-09-04 13:42:20,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/deecc7d5e/24db938434fc44d989327fd9e5bbd89f [2020-09-04 13:42:20,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:20,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:20,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:20,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:20,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:20,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:20" (1/1) ... [2020-09-04 13:42:20,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@beaab2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:20, skipping insertion in model container [2020-09-04 13:42:20,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:20" (1/1) ... [2020-09-04 13:42:20,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:20,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:20,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:20,782 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:20,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:20,824 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:20,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:20 WrapperNode [2020-09-04 13:42:20,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:20,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:20,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:20,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:20,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:20" (1/1) ... [2020-09-04 13:42:20,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:20" (1/1) ... [2020-09-04 13:42:20,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:20" (1/1) ... [2020-09-04 13:42:20,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:20" (1/1) ... [2020-09-04 13:42:20,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:20" (1/1) ... [2020-09-04 13:42:20,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:20" (1/1) ... [2020-09-04 13:42:20,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:20" (1/1) ... [2020-09-04 13:42:20,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:20,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:20,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:20,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:20,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:21,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:21,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:21,036 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:42:21,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:21,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:21,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:21,036 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:42:21,036 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:42:21,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:21,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:21,037 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:42:21,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:21,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:42:21,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:21,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:21,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:21,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:21,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:21,358 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:21,358 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 13:42:21,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:21 BoogieIcfgContainer [2020-09-04 13:42:21,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:21,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:21,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:21,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:21,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:20" (1/3) ... [2020-09-04 13:42:21,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47054173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:21, skipping insertion in model container [2020-09-04 13:42:21,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:20" (2/3) ... [2020-09-04 13:42:21,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47054173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:21, skipping insertion in model container [2020-09-04 13:42:21,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:21" (3/3) ... [2020-09-04 13:42:21,373 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn4f.c [2020-09-04 13:42:21,387 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:21,397 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:21,422 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:21,450 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:21,451 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:21,451 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:21,451 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:21,451 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:21,451 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:21,451 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:21,451 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:21,473 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-04 13:42:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 13:42:21,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:21,481 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] [2020-09-04 13:42:21,482 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:21,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:21,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-09-04 13:42:21,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:21,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273199569] [2020-09-04 13:42:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:21,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:21,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:21,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273199569] [2020-09-04 13:42:21,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:21,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:21,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645050737] [2020-09-04 13:42:21,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:21,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:21,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:21,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:21,817 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-09-04 13:42:21,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:21,939 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-09-04 13:42:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:21,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-04 13:42:21,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:21,950 INFO L225 Difference]: With dead ends: 58 [2020-09-04 13:42:21,951 INFO L226 Difference]: Without dead ends: 29 [2020-09-04 13:42:21,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:21,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-04 13:42:22,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-04 13:42:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-04 13:42:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-09-04 13:42:22,010 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-09-04 13:42:22,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:22,011 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-09-04 13:42:22,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:22,011 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-09-04 13:42:22,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 13:42:22,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:22,013 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] [2020-09-04 13:42:22,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:42:22,014 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:22,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:22,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-09-04 13:42:22,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:22,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092505538] [2020-09-04 13:42:22,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:22,046 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:22,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925242500] [2020-09-04 13:42:22,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:22,150 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:22,177 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:22,218 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:22,218 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:22,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:42:22,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:22 BoogieIcfgContainer [2020-09-04 13:42:22,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:22,482 INFO L168 Benchmark]: Toolchain (without parser) took 2024.00 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.9 MB in the beginning and 122.1 MB in the end (delta: -18.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:22,483 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-04 13:42:22,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.57 ms. Allocated memory is still 141.0 MB. Free memory was 103.9 MB in the beginning and 93.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:22,485 INFO L168 Benchmark]: Boogie Preprocessor took 130.46 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 93.4 MB in the beginning and 181.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:22,486 INFO L168 Benchmark]: RCFGBuilder took 407.02 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 165.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:22,487 INFO L168 Benchmark]: TraceAbstraction took 1113.13 ms. Allocated memory is still 204.5 MB. Free memory was 164.4 MB in the beginning and 122.1 MB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:22,492 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 364.57 ms. Allocated memory is still 141.0 MB. Free memory was 103.9 MB in the beginning and 93.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.46 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 93.4 MB in the beginning and 181.9 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.02 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 165.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1113.13 ms. Allocated memory is still 204.5 MB. Free memory was 164.4 MB in the beginning and 122.1 MB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=3, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] a[0] = 8 [L30] b[0] = 0 [L31] i=1 VAL [\old(N)=0, a={-2:0}, b={-1:0}, i=1, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={-2:0}, N=1] [L31] COND FALSE !(i