/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --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 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condaf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 13:59:36,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 13:59:36,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 13:59:36,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 13:59:36,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 13:59:36,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 13:59:36,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 13:59:36,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 13:59:36,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 13:59:36,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 13:59:36,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 13:59:36,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 13:59:36,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:59:36,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:59:36,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:59:36,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:59:36,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:59:36,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:59:36,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:59:36,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:59:36,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:59:36,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:59:36,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:59:36,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:59:36,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 13:59:36,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 13:59:36,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 13:59:36,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 13:59:36,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 13:59:36,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 13:59:36,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 13:59:36,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 13:59:36,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 13:59:36,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 13:59:36,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 13:59:36,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 13:59:36,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 13:59:36,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 13:59:36,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:59:36,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:59:36,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:59:36,081 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 [2020-07-21 13:59:36,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:59:36,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:59:36,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:59:36,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:59:36,113 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:59:36,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:59:36,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:59:36,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:59:36,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:59:36,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:59:36,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:59:36,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:59:36,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:59:36,115 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:59:36,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:59:36,115 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:59:36,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:59:36,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:59:36,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:59:36,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:59:36,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:59:36,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:59:36,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:59:36,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:59:36,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:59:36,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:59:36,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:59:36,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:59:36,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:59:36,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC 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 -> 2 [2020-07-21 13:59:36,410 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:59:36,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:59:36,428 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:59:36,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:59:36,430 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:59:36,431 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condaf.c [2020-07-21 13:59:36,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04af5d031/d64c3832467b424a8ac61532f9902f86/FLAG3bbed172e [2020-07-21 13:59:36,972 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:59:36,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condaf.c [2020-07-21 13:59:36,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04af5d031/d64c3832467b424a8ac61532f9902f86/FLAG3bbed172e [2020-07-21 13:59:37,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04af5d031/d64c3832467b424a8ac61532f9902f86 [2020-07-21 13:59:37,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:59:37,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:59:37,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:59:37,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:59:37,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:59:37,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:59:37" (1/1) ... [2020-07-21 13:59:37,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:37, skipping insertion in model container [2020-07-21 13:59:37,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:59:37" (1/1) ... [2020-07-21 13:59:37,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:59:37,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:59:37,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:59:37,685 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:59:37,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:59:37,758 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:59:37,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:37 WrapperNode [2020-07-21 13:59:37,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:59:37,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:59:37,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:59:37,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:59:37,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:37" (1/1) ... [2020-07-21 13:59:37,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:37" (1/1) ... [2020-07-21 13:59:37,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:37" (1/1) ... [2020-07-21 13:59:37,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:37" (1/1) ... [2020-07-21 13:59:37,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:37" (1/1) ... [2020-07-21 13:59:37,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:37" (1/1) ... [2020-07-21 13:59:37,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:37" (1/1) ... [2020-07-21 13:59:37,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:59:37,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:59:37,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:59:37,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:59:37,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:37" (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 [2020-07-21 13:59:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:59:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:59:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 13:59:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 13:59:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:59:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:59:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 13:59:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 13:59:38,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 13:59:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 13:59:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 13:59:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:59:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 13:59:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 13:59:38,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 13:59:38,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 13:59:38,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 13:59:38,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:59:38,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:59:38,329 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:59:38,330 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-21 13:59:38,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:59:38 BoogieIcfgContainer [2020-07-21 13:59:38,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:59:38,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:59:38,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:59:38,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:59:38,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:59:37" (1/3) ... [2020-07-21 13:59:38,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b71a08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:59:38, skipping insertion in model container [2020-07-21 13:59:38,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:59:37" (2/3) ... [2020-07-21 13:59:38,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b71a08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:59:38, skipping insertion in model container [2020-07-21 13:59:38,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:59:38" (3/3) ... [2020-07-21 13:59:38,345 INFO L109 eAbstractionObserver]: Analyzing ICFG condaf.c [2020-07-21 13:59:38,358 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:59:38,368 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 13:59:38,390 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 13:59:38,425 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:59:38,426 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:59:38,426 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:59:38,426 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:59:38,427 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:59:38,427 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:59:38,427 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:59:38,428 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:59:38,453 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-07-21 13:59:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 13:59:38,462 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:59:38,463 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] [2020-07-21 13:59:38,463 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:59:38,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:59:38,470 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times [2020-07-21 13:59:38,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:59:38,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095086972] [2020-07-21 13:59:38,482 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:59:38,588 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:59:38,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:59:38,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 13:59:38,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:59:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:59:38,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:59:38,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095086972] [2020-07-21 13:59:38,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:59:38,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 13:59:38,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214015529] [2020-07-21 13:59:38,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 13:59:38,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:59:38,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 13:59:38,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 13:59:38,701 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-07-21 13:59:38,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:59:38,842 INFO L93 Difference]: Finished difference Result 71 states and 94 transitions. [2020-07-21 13:59:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 13:59:38,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-07-21 13:59:38,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:59:38,855 INFO L225 Difference]: With dead ends: 71 [2020-07-21 13:59:38,856 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 13:59:38,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 13:59:38,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 13:59:38,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-07-21 13:59:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-21 13:59:38,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-21 13:59:38,908 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-07-21 13:59:38,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:59:38,909 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-21 13:59:38,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 13:59:38,909 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-21 13:59:38,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 13:59:38,911 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:59:38,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:59:39,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:59:39,125 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:59:39,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:59:39,127 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-07-21 13:59:39,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:59:39,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283836853] [2020-07-21 13:59:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:59:39,200 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:59:39,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:59:39,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 13:59:39,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:59:39,262 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-21 13:59:39,263 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:59:39,269 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:59:39,270 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:59:39,270 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-21 13:59:39,309 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 13:59:39,312 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:59:39,316 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:59:39,317 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:59:39,317 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-07-21 13:59:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 13:59:39,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:59:39,417 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2020-07-21 13:59:39,430 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2020-07-21 13:59:39,431 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:59:39,435 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:59:39,436 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:59:39,440 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:59:39,441 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:59:39,442 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:14, output treesize:7 [2020-07-21 13:59:39,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 13:59:39,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283836853] [2020-07-21 13:59:39,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:59:39,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-21 13:59:39,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2336584] [2020-07-21 13:59:39,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 13:59:39,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:59:39,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 13:59:39,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:59:39,471 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2020-07-21 13:59:39,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:59:39,631 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-07-21 13:59:39,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:59:39,632 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-07-21 13:59:39,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:59:39,634 INFO L225 Difference]: With dead ends: 48 [2020-07-21 13:59:39,634 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 13:59:39,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 13:59:39,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 13:59:39,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-07-21 13:59:39,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-21 13:59:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-07-21 13:59:39,643 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 30 [2020-07-21 13:59:39,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:59:39,644 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-07-21 13:59:39,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 13:59:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-21 13:59:39,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 13:59:39,646 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:59:39,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:59:39,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:59:39,861 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:59:39,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:59:39,861 INFO L82 PathProgramCache]: Analyzing trace with hash 446603169, now seen corresponding path program 1 times [2020-07-21 13:59:39,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:59:39,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560460693] [2020-07-21 13:59:39,862 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:59:39,942 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:59:39,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 13:59:39,943 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 13:59:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 13:59:39,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 13:59:40,016 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 13:59:40,016 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 13:59:40,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:59:40,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:59:40 BoogieIcfgContainer [2020-07-21 13:59:40,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:59:40,276 INFO L168 Benchmark]: Toolchain (without parser) took 2941.60 ms. Allocated memory was 137.9 MB in the beginning and 234.9 MB in the end (delta: 97.0 MB). Free memory was 101.5 MB in the beginning and 186.4 MB in the end (delta: -84.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-07-21 13:59:40,277 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 13:59:40,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.88 ms. Allocated memory is still 137.9 MB. Free memory was 101.1 MB in the beginning and 90.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-21 13:59:40,279 INFO L168 Benchmark]: Boogie Preprocessor took 187.46 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 90.6 MB in the beginning and 179.8 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-21 13:59:40,280 INFO L168 Benchmark]: RCFGBuilder took 388.64 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 162.3 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-07-21 13:59:40,280 INFO L168 Benchmark]: TraceAbstraction took 1936.34 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 162.3 MB in the beginning and 186.4 MB in the end (delta: -24.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 7.1 GB. [2020-07-21 13:59:40,284 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 421.88 ms. Allocated memory is still 137.9 MB. Free memory was 101.1 MB in the beginning and 90.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 187.46 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 90.6 MB in the beginning and 179.8 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 388.64 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 162.3 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1936.34 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 162.3 MB in the beginning and 186.4 MB in the end (delta: -24.1 MB). Peak memory consumption was 8.4 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)=6, 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i