/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ifeqn1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:41:51,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:41:51,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:41:51,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:41:51,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:41:51,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:41:51,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:41:51,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:41:51,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:41:51,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:41:51,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:41:51,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:41:51,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:41:51,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:41:51,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:41:51,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:41:51,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:41:51,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:41:51,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:41:51,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:41:51,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:41:51,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:41:51,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:41:51,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:41:51,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:41:51,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:41:51,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:41:51,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:41:51,770 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 [2020-10-23 18:41:51,826 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:41:51,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:41:51,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:41:51,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:41:51,828 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:41:51,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:41:51,829 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:41:51,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:41:51,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:41:51,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:41:51,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:41:51,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:41:51,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:41:51,845 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:41:51,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:41:51,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:41:51,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:41:51,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:41:51,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:41:51,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:41:51,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:41:51,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:41:51,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:41:51,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:41:51,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:41:51,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:41:51,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:41:51,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:41:51,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:41:51,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:41:52,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:41:52,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:41:52,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:41:52,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:41:52,255 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:41:52,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn1f.c [2020-10-23 18:41:52,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fca2548a/9dfaa0eca6f344b29f2038a873c0f1e6/FLAG02c7e5fc9 [2020-10-23 18:41:53,045 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:41:53,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn1f.c [2020-10-23 18:41:53,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fca2548a/9dfaa0eca6f344b29f2038a873c0f1e6/FLAG02c7e5fc9 [2020-10-23 18:41:53,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fca2548a/9dfaa0eca6f344b29f2038a873c0f1e6 [2020-10-23 18:41:53,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:41:53,401 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:41:53,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:41:53,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:41:53,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:41:53,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:41:53" (1/1) ... [2020-10-23 18:41:53,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c2904b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:53, skipping insertion in model container [2020-10-23 18:41:53,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:41:53" (1/1) ... [2020-10-23 18:41:53,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:41:53,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:41:53,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:41:53,693 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:41:53,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:41:53,738 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:41:53,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:53 WrapperNode [2020-10-23 18:41:53,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:41:53,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:41:53,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:41:53,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:41:53,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:53" (1/1) ... [2020-10-23 18:41:53,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:53" (1/1) ... [2020-10-23 18:41:53,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:53" (1/1) ... [2020-10-23 18:41:53,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:53" (1/1) ... [2020-10-23 18:41:53,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:53" (1/1) ... [2020-10-23 18:41:53,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:53" (1/1) ... [2020-10-23 18:41:53,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:53" (1/1) ... [2020-10-23 18:41:53,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:41:53,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:41:53,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:41:53,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:41:53,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:53" (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 [2020-10-23 18:41:53,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:41:53,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:41:53,894 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:41:53,895 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:41:53,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:41:53,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:41:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:41:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:41:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:41:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:41:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:41:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:41:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:41:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:41:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:41:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:41:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:41:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:41:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:41:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:41:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:41:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:41:54,414 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:41:54,414 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 18:41:54,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:41:54 BoogieIcfgContainer [2020-10-23 18:41:54,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:41:54,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:41:54,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:41:54,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:41:54,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:41:53" (1/3) ... [2020-10-23 18:41:54,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a450953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:41:54, skipping insertion in model container [2020-10-23 18:41:54,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:53" (2/3) ... [2020-10-23 18:41:54,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a450953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:41:54, skipping insertion in model container [2020-10-23 18:41:54,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:41:54" (3/3) ... [2020-10-23 18:41:54,426 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn1f.c [2020-10-23 18:41:54,440 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:41:54,445 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:41:54,460 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:41:54,490 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:41:54,490 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:41:54,490 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:41:54,490 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:41:54,491 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:41:54,491 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:41:54,491 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:41:54,491 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:41:54,511 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-23 18:41:54,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-23 18:41:54,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:54,520 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] [2020-10-23 18:41:54,520 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:54,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:54,528 INFO L82 PathProgramCache]: Analyzing trace with hash -996507287, now seen corresponding path program 1 times [2020-10-23 18:41:54,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:54,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978741650] [2020-10-23 18:41:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:54,879 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-23 18:41:54,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:41:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:54,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:41:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:41:54,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978741650] [2020-10-23 18:41:54,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:41:54,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:41:54,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998152242] [2020-10-23 18:41:54,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:41:54,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:41:54,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:41:54,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:41:54,952 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-10-23 18:41:55,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:41:55,133 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2020-10-23 18:41:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:41:55,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-23 18:41:55,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:41:55,143 INFO L225 Difference]: With dead ends: 67 [2020-10-23 18:41:55,144 INFO L226 Difference]: Without dead ends: 32 [2020-10-23 18:41:55,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:41:55,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-23 18:41:55,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-23 18:41:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-23 18:41:55,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-23 18:41:55,195 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-10-23 18:41:55,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:41:55,195 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-23 18:41:55,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:41:55,195 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-23 18:41:55,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-23 18:41:55,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:55,197 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] [2020-10-23 18:41:55,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:41:55,197 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:55,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:55,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1837020483, now seen corresponding path program 1 times [2020-10-23 18:41:55,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:55,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350958358] [2020-10-23 18:41:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:55,226 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:41:55,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538713842] [2020-10-23 18:41:55,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:41:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:55,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-23 18:41:55,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:41:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:41:55,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350958358] [2020-10-23 18:41:55,478 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 18:41:55,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538713842] [2020-10-23 18:41:55,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:41:55,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:41:55,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620031729] [2020-10-23 18:41:55,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:41:55,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:41:55,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:41:55,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:41:55,484 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2020-10-23 18:41:55,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:41:55,652 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-10-23 18:41:55,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:41:55,654 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-23 18:41:55,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:41:55,658 INFO L225 Difference]: With dead ends: 58 [2020-10-23 18:41:55,660 INFO L226 Difference]: Without dead ends: 42 [2020-10-23 18:41:55,661 INFO L677 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 [2020-10-23 18:41:55,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-23 18:41:55,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2020-10-23 18:41:55,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-23 18:41:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-23 18:41:55,693 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 23 [2020-10-23 18:41:55,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:41:55,693 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-23 18:41:55,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:41:55,695 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-23 18:41:55,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-23 18:41:55,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:55,698 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] [2020-10-23 18:41:55,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 18:41:55,913 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:55,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:55,915 INFO L82 PathProgramCache]: Analyzing trace with hash 617062164, now seen corresponding path program 1 times [2020-10-23 18:41:55,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:55,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542868262] [2020-10-23 18:41:55,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:56,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:41:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:56,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:41:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 18:41:56,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542868262] [2020-10-23 18:41:56,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:41:56,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:41:56,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101204371] [2020-10-23 18:41:56,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:41:56,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:41:56,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:41:56,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:41:56,097 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-10-23 18:41:56,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:41:56,293 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2020-10-23 18:41:56,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:41:56,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-23 18:41:56,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:41:56,296 INFO L225 Difference]: With dead ends: 62 [2020-10-23 18:41:56,296 INFO L226 Difference]: Without dead ends: 42 [2020-10-23 18:41:56,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:41:56,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-23 18:41:56,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-10-23 18:41:56,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-23 18:41:56,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-23 18:41:56,306 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 29 [2020-10-23 18:41:56,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:41:56,307 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-23 18:41:56,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:41:56,307 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-23 18:41:56,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-23 18:41:56,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:56,308 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] [2020-10-23 18:41:56,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:41:56,309 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:56,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:56,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1010089174, now seen corresponding path program 1 times [2020-10-23 18:41:56,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:56,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379815080] [2020-10-23 18:41:56,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:56,351 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:41:56,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200929045] [2020-10-23 18:41:56,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:41:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:41:56,469 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:41:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:41:56,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:41:56,558 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:41:56,558 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:41:56,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:41:56,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:41:56 BoogieIcfgContainer [2020-10-23 18:41:56,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:41:56,830 INFO L168 Benchmark]: Toolchain (without parser) took 3433.53 ms. Allocated memory is still 152.0 MB. Free memory was 128.8 MB in the beginning and 99.2 MB in the end (delta: 29.6 MB). Peak memory consumption was 30.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:56,830 INFO L168 Benchmark]: CDTParser took 1.37 ms. Allocated memory is still 152.0 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:41:56,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.82 ms. Allocated memory is still 152.0 MB. Free memory was 128.2 MB in the beginning and 118.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:56,832 INFO L168 Benchmark]: Boogie Preprocessor took 47.64 ms. Allocated memory is still 152.0 MB. Free memory was 118.0 MB in the beginning and 116.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:56,833 INFO L168 Benchmark]: RCFGBuilder took 627.13 ms. Allocated memory is still 152.0 MB. Free memory was 116.5 MB in the beginning and 135.5 MB in the end (delta: -19.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:56,834 INFO L168 Benchmark]: TraceAbstraction took 2410.19 ms. Allocated memory is still 152.0 MB. Free memory was 134.7 MB in the beginning and 99.2 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:56,838 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37 ms. Allocated memory is still 152.0 MB. Free memory is still 128.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 335.82 ms. Allocated memory is still 152.0 MB. Free memory was 128.2 MB in the beginning and 118.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.64 ms. Allocated memory is still 152.0 MB. Free memory was 118.0 MB in the beginning and 116.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 627.13 ms. Allocated memory is still 152.0 MB. Free memory was 116.5 MB in the beginning and 135.5 MB in the end (delta: -19.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2410.19 ms. Allocated memory is still 152.0 MB. Free memory was 134.7 MB in the beginning and 99.2 MB in the end (delta: 35.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=9, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 VAL [\old(N)=0, a={-1:0}, b={-2:0}, i=0, malloc(sizeof(long long)*N)={-2:0}, malloc(sizeof(long long)*N)={-1:0}, N=1] [L31] COND TRUE i