/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 0.2.0-7d8eed3 [2020-11-06 22:44:05,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:05,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:05,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:44:05,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:44:05,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:44:05,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:44:05,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:44:05,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:44:05,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:44:05,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:44:05,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:44:05,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:44:05,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:44:05,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:44:05,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:44:05,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:44:05,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:44:05,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:44:05,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:44:05,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:44:05,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:44:05,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:44:05,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:44:05,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:44:05,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:05,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:05,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:05,184 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 [2020-11-06 22:44:05,211 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:05,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:05,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:05,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:05,213 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:05,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:05,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:05,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:05,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:05,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:05,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:05,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:05,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:05,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:05,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:05,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:05,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:05,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:05,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:05,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:05,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:05,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:05,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:05,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:05,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:05,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:05,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:05,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:05,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:05,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:05,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:05,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:05,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:05,604 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:05,605 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:05,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn1f.c [2020-11-06 22:44:05,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c0fb487a/71fb123bc82c4a4ebba17784dafd53ab/FLAGb6c6fe10c [2020-11-06 22:44:06,303 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:06,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn1f.c [2020-11-06 22:44:06,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c0fb487a/71fb123bc82c4a4ebba17784dafd53ab/FLAGb6c6fe10c [2020-11-06 22:44:06,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c0fb487a/71fb123bc82c4a4ebba17784dafd53ab [2020-11-06 22:44:06,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:06,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:06,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:06,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:06,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:06,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:06" (1/1) ... [2020-11-06 22:44:06,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa73149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:06, skipping insertion in model container [2020-11-06 22:44:06,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:06" (1/1) ... [2020-11-06 22:44:06,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:06,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:06,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:06,858 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:06,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:06,894 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:06,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:06 WrapperNode [2020-11-06 22:44:06,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:06,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:06,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:06,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:06,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:06" (1/1) ... [2020-11-06 22:44:06,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:06" (1/1) ... [2020-11-06 22:44:06,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:06" (1/1) ... [2020-11-06 22:44:06,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:06" (1/1) ... [2020-11-06 22:44:06,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:06" (1/1) ... [2020-11-06 22:44:06,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:06" (1/1) ... [2020-11-06 22:44:06,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:06" (1/1) ... [2020-11-06 22:44:06,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:06,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:06,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:06,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:06,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:06" (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 [2020-11-06 22:44:07,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:07,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:07,039 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:07,040 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:44:07,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:07,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:44:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:44:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:44:07,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:07,463 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:07,463 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-06 22:44:07,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:07 BoogieIcfgContainer [2020-11-06 22:44:07,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:07,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:07,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:07,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:07,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:06" (1/3) ... [2020-11-06 22:44:07,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32920024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:07, skipping insertion in model container [2020-11-06 22:44:07,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:06" (2/3) ... [2020-11-06 22:44:07,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32920024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:07, skipping insertion in model container [2020-11-06 22:44:07,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:07" (3/3) ... [2020-11-06 22:44:07,487 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn1f.c [2020-11-06 22:44:07,503 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:07,507 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:07,521 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:07,551 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:07,552 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:07,552 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:07,552 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:07,552 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:07,553 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:07,553 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:07,553 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:07,572 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-11-06 22:44:07,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 22:44:07,578 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:07,579 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] [2020-11-06 22:44:07,579 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:07,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:07,586 INFO L82 PathProgramCache]: Analyzing trace with hash -996507287, now seen corresponding path program 1 times [2020-11-06 22:44:07,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:07,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651573220] [2020-11-06 22:44:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:07,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:07,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:07,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651573220] [2020-11-06 22:44:07,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:07,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:07,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206423720] [2020-11-06 22:44:07,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:07,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:07,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:07,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:07,909 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-11-06 22:44:08,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:08,083 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2020-11-06 22:44:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:08,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-06 22:44:08,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:08,092 INFO L225 Difference]: With dead ends: 67 [2020-11-06 22:44:08,093 INFO L226 Difference]: Without dead ends: 32 [2020-11-06 22:44:08,096 INFO L677 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 [2020-11-06 22:44:08,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-06 22:44:08,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-06 22:44:08,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-06 22:44:08,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-11-06 22:44:08,141 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-11-06 22:44:08,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:08,141 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-11-06 22:44:08,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:08,142 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-11-06 22:44:08,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 22:44:08,143 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:08,143 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] [2020-11-06 22:44:08,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:08,144 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:08,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:08,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1837020483, now seen corresponding path program 1 times [2020-11-06 22:44:08,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:08,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751481042] [2020-11-06 22:44:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:08,187 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:08,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639063482] [2020-11-06 22:44:08,187 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 [2020-11-06 22:44:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:08,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-06 22:44:08,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:44:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:44:08,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751481042] [2020-11-06 22:44:08,373 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-06 22:44:08,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639063482] [2020-11-06 22:44:08,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:08,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:44:08,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295835273] [2020-11-06 22:44:08,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:44:08,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:08,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:44:08,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:44:08,377 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2020-11-06 22:44:08,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:08,471 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-11-06 22:44:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:44:08,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-06 22:44:08,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:08,475 INFO L225 Difference]: With dead ends: 58 [2020-11-06 22:44:08,476 INFO L226 Difference]: Without dead ends: 42 [2020-11-06 22:44:08,477 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 [2020-11-06 22:44:08,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-06 22:44:08,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2020-11-06 22:44:08,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-06 22:44:08,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-11-06 22:44:08,491 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 23 [2020-11-06 22:44:08,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:08,492 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-11-06 22:44:08,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:44:08,492 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-11-06 22:44:08,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-06 22:44:08,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:08,493 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] [2020-11-06 22:44:08,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 22:44:08,709 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:08,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:08,711 INFO L82 PathProgramCache]: Analyzing trace with hash 617062164, now seen corresponding path program 1 times [2020-11-06 22:44:08,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:08,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897063709] [2020-11-06 22:44:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:08,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:08,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:44:08,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897063709] [2020-11-06 22:44:08,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:08,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:44:08,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547714729] [2020-11-06 22:44:08,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:44:08,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:08,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:44:08,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:44:08,825 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-11-06 22:44:08,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:08,958 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2020-11-06 22:44:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:44:08,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-11-06 22:44:08,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:08,961 INFO L225 Difference]: With dead ends: 62 [2020-11-06 22:44:08,961 INFO L226 Difference]: Without dead ends: 42 [2020-11-06 22:44:08,962 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 [2020-11-06 22:44:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-06 22:44:08,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-11-06 22:44:08,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-06 22:44:08,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-11-06 22:44:08,971 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 29 [2020-11-06 22:44:08,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:08,971 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-11-06 22:44:08,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:44:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-11-06 22:44:08,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-06 22:44:08,973 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:08,973 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] [2020-11-06 22:44:08,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:44:08,973 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:08,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1010089174, now seen corresponding path program 1 times [2020-11-06 22:44:08,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:08,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782403335] [2020-11-06 22:44:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:08,995 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-06 22:44:08,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536506746] [2020-11-06 22:44:08,995 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 [2020-11-06 22:44:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:09,066 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:09,089 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:09,119 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:44:09,119 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:44:09,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:44:09,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:09 BoogieIcfgContainer [2020-11-06 22:44:09,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:09,390 INFO L168 Benchmark]: Toolchain (without parser) took 2748.53 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 125.9 MB in the beginning and 150.8 MB in the end (delta: -25.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:09,391 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 122.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:09,392 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.03 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:09,393 INFO L168 Benchmark]: Boogie Preprocessor took 40.28 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 113.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:09,394 INFO L168 Benchmark]: RCFGBuilder took 527.68 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 131.5 MB in the end (delta: -17.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:09,395 INFO L168 Benchmark]: TraceAbstraction took 1921.24 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 131.5 MB in the beginning and 150.8 MB in the end (delta: -19.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:09,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 122.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 248.03 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.28 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 113.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 527.68 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 131.5 MB in the end (delta: -17.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1921.24 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 131.5 MB in the beginning and 150.8 MB in the end (delta: -19.4 MB). Peak memory consumption was 21.0 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)={-1:0}, malloc(sizeof(long long)*N)={-2:0}, N=1] [L31] COND TRUE i