/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.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 06:05:57,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:05:57,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:05:57,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:05:57,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:05:57,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:05:57,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:05:57,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:05:57,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:05:57,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:05:57,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:05:57,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:05:57,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:05:57,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:05:57,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:05:57,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:05:57,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:05:57,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:05:57,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:05:57,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:05:57,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:05:57,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:05:57,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:05:57,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:05:57,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 06:05:57,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:05:57,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:05:57,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:05:57,550 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 06:05:57,565 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:05:57,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:05:57,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:05:57,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:05:57,568 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:05:57,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:05:57,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:05:57,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:05:57,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:05:57,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:05:57,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:05:57,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:05:57,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:05:57,569 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:05:57,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:05:57,570 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:05:57,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:05:57,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:05:57,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:05:57,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:05:57,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:05:57,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:05:57,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:05:57,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:05:57,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:05:57,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:05:57,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:05:57,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:05:57,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:05:57,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 06:05:57,878 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:05:57,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:05:57,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:05:57,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:05:57,907 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:05:57,909 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina4f.c [2020-07-20 06:05:57,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330706926/53f707bb013844698dd704f70bb1647b/FLAG93b6c4bd5 [2020-07-20 06:05:58,486 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:05:58,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina4f.c [2020-07-20 06:05:58,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330706926/53f707bb013844698dd704f70bb1647b/FLAG93b6c4bd5 [2020-07-20 06:05:58,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330706926/53f707bb013844698dd704f70bb1647b [2020-07-20 06:05:58,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:05:58,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:05:58,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:05:58,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:05:58,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:05:58,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:05:58" (1/1) ... [2020-07-20 06:05:58,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105d6deb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:58, skipping insertion in model container [2020-07-20 06:05:58,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:05:58" (1/1) ... [2020-07-20 06:05:58,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:05:58,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:05:59,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:05:59,115 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:05:59,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:05:59,156 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:05:59,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:59 WrapperNode [2020-07-20 06:05:59,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:05:59,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:05:59,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:05:59,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:05:59,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:59" (1/1) ... [2020-07-20 06:05:59,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:59" (1/1) ... [2020-07-20 06:05:59,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:59" (1/1) ... [2020-07-20 06:05:59,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:59" (1/1) ... [2020-07-20 06:05:59,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:59" (1/1) ... [2020-07-20 06:05:59,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:59" (1/1) ... [2020-07-20 06:05:59,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:59" (1/1) ... [2020-07-20 06:05:59,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:05:59,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:05:59,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:05:59,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:05:59,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:59" (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 [2020-07-20 06:05:59,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:05:59,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:05:59,400 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:05:59,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 06:05:59,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:05:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:05:59,400 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:05:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:05:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 06:05:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 06:05:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 06:05:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:05:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 06:05:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 06:05:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 06:05:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 06:05:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 06:05:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:05:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:05:59,706 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:05:59,707 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 06:05:59,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:05:59 BoogieIcfgContainer [2020-07-20 06:05:59,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:05:59,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:05:59,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:05:59,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:05:59,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:05:58" (1/3) ... [2020-07-20 06:05:59,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774e5aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:05:59, skipping insertion in model container [2020-07-20 06:05:59,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:05:59" (2/3) ... [2020-07-20 06:05:59,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774e5aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:05:59, skipping insertion in model container [2020-07-20 06:05:59,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:05:59" (3/3) ... [2020-07-20 06:05:59,725 INFO L109 eAbstractionObserver]: Analyzing ICFG sina4f.c [2020-07-20 06:05:59,740 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:05:59,750 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 06:05:59,778 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 06:05:59,814 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:05:59,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:05:59,815 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:05:59,815 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:05:59,815 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:05:59,816 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:05:59,816 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:05:59,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:05:59,849 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-20 06:05:59,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 06:05:59,857 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:05:59,859 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] [2020-07-20 06:05:59,859 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:05:59,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:05:59,867 INFO L82 PathProgramCache]: Analyzing trace with hash -173101897, now seen corresponding path program 1 times [2020-07-20 06:05:59,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:05:59,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278615851] [2020-07-20 06:05:59,880 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@577ae04d [2020-07-20 06:05:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:06:00,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278615851] [2020-07-20 06:06:00,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:06:00,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 06:06:00,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133394331] [2020-07-20 06:06:00,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 06:06:00,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:06:00,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 06:06:00,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 06:06:00,130 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-07-20 06:06:00,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:06:00,255 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-07-20 06:06:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 06:06:00,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-20 06:06:00,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:06:00,267 INFO L225 Difference]: With dead ends: 70 [2020-07-20 06:06:00,268 INFO L226 Difference]: Without dead ends: 35 [2020-07-20 06:06:00,272 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 [2020-07-20 06:06:00,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-20 06:06:00,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-20 06:06:00,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-20 06:06:00,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-07-20 06:06:00,317 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2020-07-20 06:06:00,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:06:00,318 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-07-20 06:06:00,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 06:06:00,318 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-07-20 06:06:00,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 06:06:00,320 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:06:00,320 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] [2020-07-20 06:06:00,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 06:06:00,321 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:06:00,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:06:00,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1503462707, now seen corresponding path program 1 times [2020-07-20 06:06:00,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:06:00,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176874714] [2020-07-20 06:06:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@577ae04d [2020-07-20 06:06:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:06:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:06:00,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176874714] [2020-07-20 06:06:00,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:06:00,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:06:00,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290284146] [2020-07-20 06:06:00,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:06:00,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:06:00,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:06:00,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:06:00,515 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-07-20 06:06:00,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:06:00,691 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-07-20 06:06:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:06:00,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-07-20 06:06:00,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:06:00,696 INFO L225 Difference]: With dead ends: 67 [2020-07-20 06:06:00,696 INFO L226 Difference]: Without dead ends: 47 [2020-07-20 06:06:00,698 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 [2020-07-20 06:06:00,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-20 06:06:00,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-07-20 06:06:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 06:06:00,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-07-20 06:06:00,714 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2020-07-20 06:06:00,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:06:00,715 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-07-20 06:06:00,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:06:00,715 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-07-20 06:06:00,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-20 06:06:00,717 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:06:00,717 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] [2020-07-20 06:06:00,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 06:06:00,718 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:06:00,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:06:00,718 INFO L82 PathProgramCache]: Analyzing trace with hash -260192085, now seen corresponding path program 1 times [2020-07-20 06:06:00,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:06:00,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408833947] [2020-07-20 06:06:00,719 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@577ae04d [2020-07-20 06:06:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 06:06:00,798 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 06:06:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 06:06:00,899 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 06:06:00,954 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 06:06:00,955 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 06:06:00,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 06:06:01,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:06:01 BoogieIcfgContainer [2020-07-20 06:06:01,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 06:06:01,019 INFO L168 Benchmark]: Toolchain (without parser) took 2152.57 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 104.1 MB in the beginning and 93.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 66.9 MB. Max. memory is 7.1 GB. [2020-07-20 06:06:01,019 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 146.3 MB. Free memory is still 122.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 06:06:01,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.83 ms. Allocated memory is still 146.3 MB. Free memory was 103.7 MB in the beginning and 93.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-20 06:06:01,021 INFO L168 Benchmark]: Boogie Preprocessor took 169.77 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 93.2 MB in the beginning and 180.2 MB in the end (delta: -87.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-20 06:06:01,022 INFO L168 Benchmark]: RCFGBuilder took 385.93 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 160.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-07-20 06:06:01,023 INFO L168 Benchmark]: TraceAbstraction took 1300.22 ms. Allocated memory is still 202.9 MB. Free memory was 160.8 MB in the beginning and 93.8 MB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. [2020-07-20 06:06:01,028 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 146.3 MB. Free memory is still 122.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.83 ms. Allocated memory is still 146.3 MB. Free memory was 103.7 MB in the beginning and 93.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 169.77 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 93.2 MB in the beginning and 180.2 MB in the end (delta: -87.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 385.93 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 160.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1300.22 ms. Allocated memory is still 202.9 MB. Free memory was 160.8 MB in the beginning and 93.8 MB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 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)=10, 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 sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L28] long long *b = malloc(sizeof(long long)*N); [L30] sum[0] = 0 [L31] i=0 VAL [\old(N)=0, a={-1:0}, b={-2:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={4:0}] [L31] COND TRUE i