/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/indp4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:27,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:27,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:27,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:27,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:27,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:27,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:27,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:27,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:27,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:27,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:27,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:27,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:27,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:27,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:27,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:27,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:27,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:27,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:27,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:27,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:27,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:27,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:27,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:27,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:42:27,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:42:27,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:42:27,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:42:27,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:42:27,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:42:27,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:42:27,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:42:27,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:42:27,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:42:27,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:42:27,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:42:27,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:42:27,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:42:27,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:27,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:27,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:27,856 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 13:42:27,884 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:27,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:27,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:27,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:27,886 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:27,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:27,886 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:27,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:27,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:27,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:27,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:27,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:27,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:27,888 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:27,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:27,888 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:27,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:27,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:27,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:27,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:27,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:27,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:27,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:27,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:27,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:27,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:27,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:27,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:27,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:27,891 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:28,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:28,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:28,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:28,413 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:28,413 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:28,414 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp4f.c [2020-09-04 13:42:28,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0563919d8/d50ff692f514456cbebec137a7be03da/FLAG03aa31ed7 [2020-09-04 13:42:29,074 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:29,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/indp4f.c [2020-09-04 13:42:29,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0563919d8/d50ff692f514456cbebec137a7be03da/FLAG03aa31ed7 [2020-09-04 13:42:29,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0563919d8/d50ff692f514456cbebec137a7be03da [2020-09-04 13:42:29,436 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:29,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:29,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:29,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:29,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:29,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:29" (1/1) ... [2020-09-04 13:42:29,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:29, skipping insertion in model container [2020-09-04 13:42:29,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:29" (1/1) ... [2020-09-04 13:42:29,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:29,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:29,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:29,726 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:29,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:29,767 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:29,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:29 WrapperNode [2020-09-04 13:42:29,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:29,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:29,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:29,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:29,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:29" (1/1) ... [2020-09-04 13:42:29,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:29" (1/1) ... [2020-09-04 13:42:29,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:29" (1/1) ... [2020-09-04 13:42:29,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:29" (1/1) ... [2020-09-04 13:42:29,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:29" (1/1) ... [2020-09-04 13:42:29,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:29" (1/1) ... [2020-09-04 13:42:29,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:29" (1/1) ... [2020-09-04 13:42:29,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:29,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:29,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:29,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:29,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:29" (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 13:42:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:29,982 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:42:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:29,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:42:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:42:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:42:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:42:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:29,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:30,344 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:30,345 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 13:42:30,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:30 BoogieIcfgContainer [2020-09-04 13:42:30,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:30,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:30,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:30,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:30,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:29" (1/3) ... [2020-09-04 13:42:30,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c573c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:30, skipping insertion in model container [2020-09-04 13:42:30,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:29" (2/3) ... [2020-09-04 13:42:30,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c573c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:30, skipping insertion in model container [2020-09-04 13:42:30,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:30" (3/3) ... [2020-09-04 13:42:30,368 INFO L109 eAbstractionObserver]: Analyzing ICFG indp4f.c [2020-09-04 13:42:30,383 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:30,404 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:30,443 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:30,473 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:30,474 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:30,474 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:30,474 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:30,474 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:30,474 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:30,475 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:30,475 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-09-04 13:42:30,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 13:42:30,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:30,508 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] [2020-09-04 13:42:30,508 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:30,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:30,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-09-04 13:42:30,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:30,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333544646] [2020-09-04 13:42:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:30,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:30,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:30,823 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 13:42:30,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333544646] [2020-09-04 13:42:30,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:30,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:30,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343056241] [2020-09-04 13:42:30,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:30,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:30,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:30,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:30,854 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-09-04 13:42:31,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:31,002 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-09-04 13:42:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:31,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-04 13:42:31,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:31,017 INFO L225 Difference]: With dead ends: 64 [2020-09-04 13:42:31,017 INFO L226 Difference]: Without dead ends: 32 [2020-09-04 13:42:31,022 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 13:42:31,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-04 13:42:31,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-04 13:42:31,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-04 13:42:31,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-09-04 13:42:31,078 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-09-04 13:42:31,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:31,079 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-09-04 13:42:31,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:31,080 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-09-04 13:42:31,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 13:42:31,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:31,081 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] [2020-09-04 13:42:31,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:42:31,082 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:31,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:31,083 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-09-04 13:42:31,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:31,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793023022] [2020-09-04 13:42:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:31,112 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:31,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913265205] [2020-09-04 13:42:31,113 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 13:42:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:31,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2020-09-04 13:42:31,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:31,274 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 13:42:31,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793023022] [2020-09-04 13:42:31,275 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:31,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913265205] [2020-09-04 13:42:31,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:31,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:42:31,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433295003] [2020-09-04 13:42:31,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:42:31,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:31,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:42:31,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:42:31,280 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 4 states. [2020-09-04 13:42:31,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:31,414 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-09-04 13:42:31,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:42:31,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-09-04 13:42:31,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:31,419 INFO L225 Difference]: With dead ends: 59 [2020-09-04 13:42:31,419 INFO L226 Difference]: Without dead ends: 42 [2020-09-04 13:42:31,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:42:31,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-04 13:42:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-09-04 13:42:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-04 13:42:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-09-04 13:42:31,437 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-09-04 13:42:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:31,437 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-09-04 13:42:31,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:42:31,438 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-09-04 13:42:31,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 13:42:31,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:31,439 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] [2020-09-04 13:42:31,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:42:31,655 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:31,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:31,655 INFO L82 PathProgramCache]: Analyzing trace with hash -191015719, now seen corresponding path program 1 times [2020-09-04 13:42:31,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:31,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752363510] [2020-09-04 13:42:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:31,676 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:31,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470400413] [2020-09-04 13:42:31,677 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:31,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:31,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:31,801 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:31,802 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:32,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:32,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:32 BoogieIcfgContainer [2020-09-04 13:42:32,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:32,071 INFO L168 Benchmark]: Toolchain (without parser) took 2630.98 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.8 MB in the beginning and 93.0 MB in the end (delta: 7.7 MB). Peak memory consumption was 70.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:32,072 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 13:42:32,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.96 ms. Allocated memory is still 138.4 MB. Free memory was 100.5 MB in the beginning and 90.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:32,074 INFO L168 Benchmark]: Boogie Preprocessor took 130.28 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 90.2 MB in the beginning and 178.6 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:32,075 INFO L168 Benchmark]: RCFGBuilder took 456.80 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 162.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:32,076 INFO L168 Benchmark]: TraceAbstraction took 1708.45 ms. Allocated memory is still 201.3 MB. Free memory was 161.6 MB in the beginning and 93.0 MB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:32,081 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 329.96 ms. Allocated memory is still 138.4 MB. Free memory was 100.5 MB in the beginning and 90.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.28 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 90.2 MB in the beginning and 178.6 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.80 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 162.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1708.45 ms. Allocated memory is still 201.3 MB. Free memory was 161.6 MB in the beginning and 93.0 MB in the end (delta: 68.6 MB). Peak memory consumption was 68.6 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)=2, 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); [L28] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1] [L28] COND TRUE i