/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 NUM_VARIABLES --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/res1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:47:11,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:47:11,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:47:11,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:47:11,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:47:11,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:47:11,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:47:12,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:47:12,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:47:12,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:47:12,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:47:12,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:47:12,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:47:12,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:47:12,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:47:12,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:47:12,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:47:12,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:47:12,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:47:12,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:47:12,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:47:12,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:47:12,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:47:12,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:47:12,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:47:12,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 01:47:12,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 01:47:12,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 01:47:12,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 01:47:12,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 01:47:12,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 01:47:12,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 01:47:12,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 01:47:12,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:47:12,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:47:12,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:47:12,060 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 01:47:12,097 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:47:12,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:47:12,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:47:12,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:47:12,099 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:47:12,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:47:12,099 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:47:12,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:47:12,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:47:12,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:47:12,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:47:12,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:47:12,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:47:12,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:47:12,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:47:12,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:47:12,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:47:12,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:47:12,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:47:12,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:47:12,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:47:12,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:47:12,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:47:12,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:47:12,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:47:12,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:47:12,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:47:12,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:47:12,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:47:12,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES 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 01:47:12,403 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:47:12,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:47:12,428 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:47:12,430 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:47:12,432 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:47:12,433 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1f.c [2020-07-20 01:47:12,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55eb6ccb3/17c32eea557e4658ac26d059e65af524/FLAG49d89facc [2020-07-20 01:47:12,977 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:47:12,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1f.c [2020-07-20 01:47:12,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55eb6ccb3/17c32eea557e4658ac26d059e65af524/FLAG49d89facc [2020-07-20 01:47:13,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55eb6ccb3/17c32eea557e4658ac26d059e65af524 [2020-07-20 01:47:13,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:47:13,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:47:13,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:47:13,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:47:13,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:47:13,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:47:13" (1/1) ... [2020-07-20 01:47:13,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dbc7ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:13, skipping insertion in model container [2020-07-20 01:47:13,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:47:13" (1/1) ... [2020-07-20 01:47:13,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:47:13,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:47:13,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:47:13,560 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:47:13,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:47:13,596 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:47:13,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:13 WrapperNode [2020-07-20 01:47:13,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:47:13,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:47:13,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:47:13,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:47:13,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:13" (1/1) ... [2020-07-20 01:47:13,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:13" (1/1) ... [2020-07-20 01:47:13,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:13" (1/1) ... [2020-07-20 01:47:13,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:13" (1/1) ... [2020-07-20 01:47:13,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:13" (1/1) ... [2020-07-20 01:47:13,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:13" (1/1) ... [2020-07-20 01:47:13,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:13" (1/1) ... [2020-07-20 01:47:13,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:47:13,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:47:13,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:47:13,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:47:13,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:13" (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 01:47:13,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:47:13,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:47:13,793 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 01:47:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:47:13,794 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:47:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:47:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 01:47:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 01:47:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:47:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:47:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 01:47:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:47:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 01:47:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 01:47:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:47:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:47:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:47:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:47:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:47:14,097 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:47:14,098 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 01:47:14,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:47:14 BoogieIcfgContainer [2020-07-20 01:47:14,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:47:14,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:47:14,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:47:14,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:47:14,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:47:13" (1/3) ... [2020-07-20 01:47:14,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366a4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:47:14, skipping insertion in model container [2020-07-20 01:47:14,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:13" (2/3) ... [2020-07-20 01:47:14,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366a4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:47:14, skipping insertion in model container [2020-07-20 01:47:14,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:47:14" (3/3) ... [2020-07-20 01:47:14,114 INFO L109 eAbstractionObserver]: Analyzing ICFG res1f.c [2020-07-20 01:47:14,129 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:47:14,136 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:47:14,152 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:47:14,179 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:47:14,179 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:47:14,179 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:47:14,180 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:47:14,180 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:47:14,180 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:47:14,180 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:47:14,180 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:47:14,202 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-20 01:47:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 01:47:14,210 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:47:14,211 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] [2020-07-20 01:47:14,212 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:47:14,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:47:14,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-07-20 01:47:14,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:47:14,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440489912] [2020-07-20 01:47:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a36b0d7 [2020-07-20 01:47:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:14,449 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 01:47:14,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440489912] [2020-07-20 01:47:14,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:47:14,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 01:47:14,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703134354] [2020-07-20 01:47:14,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 01:47:14,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:47:14,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 01:47:14,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 01:47:14,487 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-07-20 01:47:14,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:47:14,630 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-07-20 01:47:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:47:14,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-20 01:47:14,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:47:14,649 INFO L225 Difference]: With dead ends: 64 [2020-07-20 01:47:14,650 INFO L226 Difference]: Without dead ends: 30 [2020-07-20 01:47:14,658 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 01:47:14,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-20 01:47:14,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-20 01:47:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 01:47:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-20 01:47:14,698 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-07-20 01:47:14,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:47:14,699 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-20 01:47:14,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 01:47:14,699 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-20 01:47:14,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 01:47:14,700 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:47:14,701 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] [2020-07-20 01:47:14,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:47:14,702 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:47:14,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:47:14,702 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-07-20 01:47:14,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:47:14,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438031051] [2020-07-20 01:47:14,703 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a36b0d7 [2020-07-20 01:47:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:47:14,839 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 01:47:14,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438031051] [2020-07-20 01:47:14,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:47:14,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 01:47:14,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303750269] [2020-07-20 01:47:14,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 01:47:14,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:47:14,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 01:47:14,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:47:14,844 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-07-20 01:47:14,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:47:14,995 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-07-20 01:47:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 01:47:14,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-07-20 01:47:14,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:47:14,997 INFO L225 Difference]: With dead ends: 53 [2020-07-20 01:47:14,997 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 01:47:14,998 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 01:47:14,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 01:47:15,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-07-20 01:47:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-20 01:47:15,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-07-20 01:47:15,009 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-07-20 01:47:15,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:47:15,010 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-07-20 01:47:15,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 01:47:15,010 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-07-20 01:47:15,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 01:47:15,011 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:47:15,012 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] [2020-07-20 01:47:15,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:47:15,012 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:47:15,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:47:15,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-07-20 01:47:15,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:47:15,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91575077] [2020-07-20 01:47:15,014 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a36b0d7 [2020-07-20 01:47:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:47:15,078 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:47:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:47:15,134 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:47:15,171 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 01:47:15,171 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 01:47:15,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 01:47:15,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:47:15 BoogieIcfgContainer [2020-07-20 01:47:15,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:47:15,225 INFO L168 Benchmark]: Toolchain (without parser) took 1885.73 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 103.2 MB in the beginning and 101.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:15,226 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 01:47:15,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.44 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 92.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:15,228 INFO L168 Benchmark]: Boogie Preprocessor took 135.91 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 92.2 MB in the beginning and 181.9 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:15,229 INFO L168 Benchmark]: RCFGBuilder took 370.32 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 163.8 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:15,230 INFO L168 Benchmark]: TraceAbstraction took 1117.02 ms. Allocated memory is still 204.5 MB. Free memory was 163.1 MB in the beginning and 101.3 MB in the end (delta: 61.8 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. [2020-07-20 01:47:15,235 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.44 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 92.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.91 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 92.2 MB in the beginning and 181.9 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 370.32 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 163.8 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1117.02 ms. Allocated memory is still 204.5 MB. Free memory was 163.1 MB in the beginning and 101.3 MB in the end (delta: 61.8 MB). Peak memory consumption was 61.8 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] int *a = malloc(sizeof(int)*N); [L28] int *b = malloc(sizeof(int)*N); [L30] sum[0] = 1 [L31] i=0 VAL [\old(N)=0, a={-1:0}, b={5:0}, i=0, malloc(sizeof(int)*N)={5:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={7:0}] [L31] COND TRUE i