/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_FUNCTIONS --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/brs4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:36:37,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:36:37,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:36:37,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:36:37,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:36:37,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:36:37,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:36:37,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:36:37,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:36:37,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:36:37,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:36:37,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:36:37,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:36:37,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:36:37,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:36:37,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:36:37,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:36:37,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:36:37,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:36:37,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:36:37,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:36:38,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:36:38,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:36:38,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:36:38,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 23:36:38,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 23:36:38,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 23:36:38,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 23:36:38,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 23:36:38,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 23:36:38,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 23:36:38,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 23:36:38,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 23:36:38,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 23:36:38,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 23:36:38,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 23:36:38,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 23:36:38,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 23:36:38,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:36:38,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:36:38,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:36:38,020 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 [2020-07-19 23:36:38,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:36:38,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:36:38,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:36:38,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:36:38,059 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:36:38,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:36:38,060 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:36:38,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:36:38,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:36:38,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:36:38,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:36:38,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:36:38,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:36:38,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:36:38,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:36:38,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:36:38,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:36:38,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:36:38,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:36:38,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:36:38,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:36:38,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:36:38,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:36:38,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:36:38,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:36:38,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:36:38,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:36:38,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:36:38,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:36:38,066 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_FUNCTIONS 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 [2020-07-19 23:36:38,434 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:36:38,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:36:38,465 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:36:38,467 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:36:38,468 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:36:38,468 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs4f.c [2020-07-19 23:36:38,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf3e8a661/45125a850e5d4aba8e77005ac27f4326/FLAG797a812e3 [2020-07-19 23:36:39,170 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:36:39,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs4f.c [2020-07-19 23:36:39,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf3e8a661/45125a850e5d4aba8e77005ac27f4326/FLAG797a812e3 [2020-07-19 23:36:39,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf3e8a661/45125a850e5d4aba8e77005ac27f4326 [2020-07-19 23:36:39,546 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:36:39,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:36:39,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:36:39,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:36:39,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:36:39,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:36:39" (1/1) ... [2020-07-19 23:36:39,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8201e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:39, skipping insertion in model container [2020-07-19 23:36:39,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:36:39" (1/1) ... [2020-07-19 23:36:39,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:36:39,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:36:39,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:36:39,863 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:36:39,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:36:39,941 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:36:39,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:39 WrapperNode [2020-07-19 23:36:39,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:36:39,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:36:39,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:36:39,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:36:40,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:39" (1/1) ... [2020-07-19 23:36:40,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:39" (1/1) ... [2020-07-19 23:36:40,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:39" (1/1) ... [2020-07-19 23:36:40,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:39" (1/1) ... [2020-07-19 23:36:40,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:39" (1/1) ... [2020-07-19 23:36:40,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:39" (1/1) ... [2020-07-19 23:36:40,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:39" (1/1) ... [2020-07-19 23:36:40,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:36:40,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:36:40,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:36:40,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:36:40,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:39" (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 [2020-07-19 23:36:40,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:36:40,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:36:40,194 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 23:36:40,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 23:36:40,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:36:40,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:36:40,195 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 23:36:40,196 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 23:36:40,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 23:36:40,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:36:40,197 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 23:36:40,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:36:40,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 23:36:40,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 23:36:40,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 23:36:40,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 23:36:40,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 23:36:40,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:36:40,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:36:40,495 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:36:40,495 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-19 23:36:40,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:36:40 BoogieIcfgContainer [2020-07-19 23:36:40,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:36:40,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:36:40,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:36:40,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:36:40,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:36:39" (1/3) ... [2020-07-19 23:36:40,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed7e131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:36:40, skipping insertion in model container [2020-07-19 23:36:40,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:36:39" (2/3) ... [2020-07-19 23:36:40,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed7e131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:36:40, skipping insertion in model container [2020-07-19 23:36:40,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:36:40" (3/3) ... [2020-07-19 23:36:40,513 INFO L109 eAbstractionObserver]: Analyzing ICFG brs4f.c [2020-07-19 23:36:40,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:36:40,537 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:36:40,557 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:36:40,589 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:36:40,590 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:36:40,590 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:36:40,590 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:36:40,591 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:36:40,591 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:36:40,591 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:36:40,591 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:36:40,614 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-19 23:36:40,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-19 23:36:40,625 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:36:40,627 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] [2020-07-19 23:36:40,627 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:36:40,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:36:40,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-07-19 23:36:40,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:36:40,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994405279] [2020-07-19 23:36:40,647 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c33da5b [2020-07-19 23:36:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:36:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:36:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:36:40,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:36:40,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994405279] [2020-07-19 23:36:40,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:36:40,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 23:36:40,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071398567] [2020-07-19 23:36:40,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 23:36:40,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:36:40,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 23:36:40,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:36:40,935 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-07-19 23:36:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:36:41,083 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-07-19 23:36:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 23:36:41,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-19 23:36:41,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:36:41,096 INFO L225 Difference]: With dead ends: 56 [2020-07-19 23:36:41,097 INFO L226 Difference]: Without dead ends: 26 [2020-07-19 23:36:41,102 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 [2020-07-19 23:36:41,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-19 23:36:41,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-19 23:36:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-19 23:36:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-07-19 23:36:41,151 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-07-19 23:36:41,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:36:41,152 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-07-19 23:36:41,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 23:36:41,152 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-07-19 23:36:41,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-19 23:36:41,153 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:36:41,153 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] [2020-07-19 23:36:41,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:36:41,154 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:36:41,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:36:41,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-07-19 23:36:41,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:36:41,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294592390] [2020-07-19 23:36:41,157 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c33da5b [2020-07-19 23:36:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:36:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:36:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:36:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:36:41,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294592390] [2020-07-19 23:36:41,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:36:41,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:36:41,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219063720] [2020-07-19 23:36:41,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:36:41,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:36:41,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:36:41,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:36:41,307 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-07-19 23:36:41,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:36:41,454 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-07-19 23:36:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:36:41,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-07-19 23:36:41,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:36:41,456 INFO L225 Difference]: With dead ends: 45 [2020-07-19 23:36:41,456 INFO L226 Difference]: Without dead ends: 32 [2020-07-19 23:36:41,458 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 [2020-07-19 23:36:41,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-19 23:36:41,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-07-19 23:36:41,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-19 23:36:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-19 23:36:41,468 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2020-07-19 23:36:41,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:36:41,468 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-19 23:36:41,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:36:41,469 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-19 23:36:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-19 23:36:41,470 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:36:41,470 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] [2020-07-19 23:36:41,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:36:41,471 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:36:41,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:36:41,472 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-07-19 23:36:41,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:36:41,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359995398] [2020-07-19 23:36:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c33da5b [2020-07-19 23:36:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:36:41,515 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:36:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:36:41,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:36:41,601 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-19 23:36:41,602 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 23:36:41,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 23:36:41,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:36:41 BoogieIcfgContainer [2020-07-19 23:36:41,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:36:41,646 INFO L168 Benchmark]: Toolchain (without parser) took 2097.88 ms. Allocated memory was 142.1 MB in the beginning and 200.3 MB in the end (delta: 58.2 MB). Free memory was 101.5 MB in the beginning and 104.5 MB in the end (delta: -3.1 MB). Peak memory consumption was 55.1 MB. Max. memory is 7.1 GB. [2020-07-19 23:36:41,647 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 142.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-19 23:36:41,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.74 ms. Allocated memory is still 142.1 MB. Free memory was 101.1 MB in the beginning and 90.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-19 23:36:41,649 INFO L168 Benchmark]: Boogie Preprocessor took 163.76 ms. Allocated memory was 142.1 MB in the beginning and 200.3 MB in the end (delta: 58.2 MB). Free memory was 90.6 MB in the beginning and 177.9 MB in the end (delta: -87.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:36:41,651 INFO L168 Benchmark]: RCFGBuilder took 393.25 ms. Allocated memory is still 200.3 MB. Free memory was 177.9 MB in the beginning and 161.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-07-19 23:36:41,651 INFO L168 Benchmark]: TraceAbstraction took 1140.35 ms. Allocated memory is still 200.3 MB. Free memory was 160.4 MB in the beginning and 104.5 MB in the end (delta: 55.9 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:36:41,656 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 142.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 392.74 ms. Allocated memory is still 142.1 MB. Free memory was 101.1 MB in the beginning and 90.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 163.76 ms. Allocated memory was 142.1 MB in the beginning and 200.3 MB in the end (delta: 58.2 MB). Free memory was 90.6 MB in the beginning and 177.9 MB in the end (delta: -87.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.25 ms. Allocated memory is still 200.3 MB. Free memory was 177.9 MB in the beginning and 161.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1140.35 ms. Allocated memory is still 200.3 MB. Free memory was 160.4 MB in the beginning and 104.5 MB in the end (delta: 55.9 MB). Peak memory consumption was 55.9 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)=42, 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); [L29] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L29] COND TRUE i