/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/s1liff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:44:30,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:30,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:30,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:44:30,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:44:30,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:44:30,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:44:30,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:44:30,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:44:30,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:44:30,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:44:30,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:44:30,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:44:30,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:44:30,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:44:30,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:44:30,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:44:30,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:44:30,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:44:30,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:44:30,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:44:30,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:44:30,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:44:30,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:44:30,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:44:30,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:30,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:30,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:30,855 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 22:44:30,916 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:30,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:30,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:30,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:30,921 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:30,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:30,922 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:30,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:30,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:30,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:30,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:30,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:30,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:30,925 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:30,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:30,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:30,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:30,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:30,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:30,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:30,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:30,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:30,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:30,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:30,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:30,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:30,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:30,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:30,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:30,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:31,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:31,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:31,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:31,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:31,381 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:31,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1liff.c [2020-11-06 22:44:31,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c69accdff/884bc9417ce34daea006b1dcaa4f4017/FLAGb76f9a4fd [2020-11-06 22:44:32,021 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:32,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s1liff.c [2020-11-06 22:44:32,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c69accdff/884bc9417ce34daea006b1dcaa4f4017/FLAGb76f9a4fd [2020-11-06 22:44:32,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c69accdff/884bc9417ce34daea006b1dcaa4f4017 [2020-11-06 22:44:32,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:32,402 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:32,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:32,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:32,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:32,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:32" (1/1) ... [2020-11-06 22:44:32,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3700ee28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:32, skipping insertion in model container [2020-11-06 22:44:32,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:32" (1/1) ... [2020-11-06 22:44:32,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:32,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:32,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:32,647 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:32,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:32,694 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:32,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:32 WrapperNode [2020-11-06 22:44:32,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:32,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:32,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:32,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:32,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:32" (1/1) ... [2020-11-06 22:44:32,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:32" (1/1) ... [2020-11-06 22:44:32,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:32" (1/1) ... [2020-11-06 22:44:32,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:32" (1/1) ... [2020-11-06 22:44:32,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:32" (1/1) ... [2020-11-06 22:44:32,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:32" (1/1) ... [2020-11-06 22:44:32,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:32" (1/1) ... [2020-11-06 22:44:32,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:32,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:32,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:32,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:32,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:32" (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 22:44:32,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:32,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:32,881 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:32,881 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:44:32,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:32,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:32,882 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:32,882 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:32,882 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:32,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:32,883 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:44:32,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:32,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:32,884 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:44:32,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:32,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:44:32,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:32,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:32,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:32,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:32,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:32,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:33,324 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:33,325 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-06 22:44:33,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:33 BoogieIcfgContainer [2020-11-06 22:44:33,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:33,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:33,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:33,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:33,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:32" (1/3) ... [2020-11-06 22:44:33,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6f98e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:33, skipping insertion in model container [2020-11-06 22:44:33,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:32" (2/3) ... [2020-11-06 22:44:33,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6f98e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:33, skipping insertion in model container [2020-11-06 22:44:33,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:33" (3/3) ... [2020-11-06 22:44:33,336 INFO L111 eAbstractionObserver]: Analyzing ICFG s1liff.c [2020-11-06 22:44:33,365 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:33,368 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:33,380 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:33,439 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:33,439 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:33,439 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:33,439 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:33,439 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:33,440 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:33,440 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:33,440 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:33,469 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-06 22:44:33,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-06 22:44:33,482 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:33,483 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] [2020-11-06 22:44:33,484 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:33,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:33,496 INFO L82 PathProgramCache]: Analyzing trace with hash 371341983, now seen corresponding path program 1 times [2020-11-06 22:44:33,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:33,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776230487] [2020-11-06 22:44:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:33,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:33,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:33,927 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 22:44:33,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776230487] [2020-11-06 22:44:33,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:33,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:33,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243646872] [2020-11-06 22:44:33,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:33,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:33,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:33,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:33,960 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2020-11-06 22:44:34,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:34,185 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2020-11-06 22:44:34,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:34,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-06 22:44:34,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:34,195 INFO L225 Difference]: With dead ends: 65 [2020-11-06 22:44:34,195 INFO L226 Difference]: Without dead ends: 29 [2020-11-06 22:44:34,199 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 22:44:34,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-06 22:44:34,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-06 22:44:34,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-06 22:44:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-11-06 22:44:34,246 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 24 [2020-11-06 22:44:34,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:34,246 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-11-06 22:44:34,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:34,246 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-11-06 22:44:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-06 22:44:34,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:34,248 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] [2020-11-06 22:44:34,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:34,248 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:34,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:34,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1793608214, now seen corresponding path program 1 times [2020-11-06 22:44:34,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:34,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138635582] [2020-11-06 22:44:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:34,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:34,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:34,477 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 22:44:34,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138635582] [2020-11-06 22:44:34,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:34,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:44:34,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759534992] [2020-11-06 22:44:34,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:44:34,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:34,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:44:34,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:44:34,482 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2020-11-06 22:44:34,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:34,655 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2020-11-06 22:44:34,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:44:34,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-11-06 22:44:34,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:34,658 INFO L225 Difference]: With dead ends: 50 [2020-11-06 22:44:34,658 INFO L226 Difference]: Without dead ends: 36 [2020-11-06 22:44:34,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:44:34,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-06 22:44:34,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-11-06 22:44:34,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-06 22:44:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-11-06 22:44:34,669 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-11-06 22:44:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:34,670 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-11-06 22:44:34,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:44:34,670 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-11-06 22:44:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-06 22:44:34,671 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:34,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:44:34,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:44:34,672 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:34,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:34,673 INFO L82 PathProgramCache]: Analyzing trace with hash -2090381425, now seen corresponding path program 1 times [2020-11-06 22:44:34,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:34,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623808589] [2020-11-06 22:44:34,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:34,745 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:34,809 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:34,842 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:44:34,843 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:44:34,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:44:34,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:34 BoogieIcfgContainer [2020-11-06 22:44:34,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:34,892 INFO L168 Benchmark]: Toolchain (without parser) took 2493.93 ms. Allocated memory is still 152.0 MB. Free memory was 127.6 MB in the beginning and 85.5 MB in the end (delta: 42.2 MB). Peak memory consumption was 41.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:34,893 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 152.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:34,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.34 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 116.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:34,899 INFO L168 Benchmark]: Boogie Preprocessor took 88.94 ms. Allocated memory is still 152.0 MB. Free memory was 116.8 MB in the beginning and 115.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:34,902 INFO L168 Benchmark]: RCFGBuilder took 537.86 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 98.0 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:34,903 INFO L168 Benchmark]: TraceAbstraction took 1560.67 ms. Allocated memory is still 152.0 MB. Free memory was 97.5 MB in the beginning and 85.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:34,910 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 152.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 292.34 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 116.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.94 ms. Allocated memory is still 152.0 MB. Free memory was 116.8 MB in the beginning and 115.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 537.86 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 98.0 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1560.67 ms. Allocated memory is still 152.0 MB. Free memory was 97.5 MB in the beginning and 85.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 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)=51, 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 sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = N [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={11:0}] [L32] COND TRUE i