/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/sina2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:44:42,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:42,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:42,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:44:42,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:44:42,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:44:42,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:44:42,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:44:42,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:44:42,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:44:42,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:44:42,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:44:42,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:44:42,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:44:42,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:44:42,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:44:42,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:44:42,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:44:42,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:44:42,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:44:42,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:44:42,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:44:42,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:44:42,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:44:42,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:44:42,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:42,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:42,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:42,904 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 22:44:42,957 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:42,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:42,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:42,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:42,960 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:42,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:42,960 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:42,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:42,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:42,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:42,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:42,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:42,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:42,962 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:42,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:42,962 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:42,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:42,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:42,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:42,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:42,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:42,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:42,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:42,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:42,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:42,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:42,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:42,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:42,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:42,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:43,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:43,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:43,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:43,460 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:43,460 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:43,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina2f.c [2020-11-06 22:44:43,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff6063d44/d9f44e4d9d884f5b84f2d503120fff61/FLAGb01956a88 [2020-11-06 22:44:44,162 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:44,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina2f.c [2020-11-06 22:44:44,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff6063d44/d9f44e4d9d884f5b84f2d503120fff61/FLAGb01956a88 [2020-11-06 22:44:44,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff6063d44/d9f44e4d9d884f5b84f2d503120fff61 [2020-11-06 22:44:44,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:44,543 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:44,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:44,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:44,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:44,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:44" (1/1) ... [2020-11-06 22:44:44,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c8d31ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:44, skipping insertion in model container [2020-11-06 22:44:44,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:44" (1/1) ... [2020-11-06 22:44:44,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:44,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:44,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:44,775 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:44,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:44,818 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:44,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:44 WrapperNode [2020-11-06 22:44:44,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:44,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:44,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:44,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:44,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:44" (1/1) ... [2020-11-06 22:44:44,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:44" (1/1) ... [2020-11-06 22:44:44,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:44" (1/1) ... [2020-11-06 22:44:44,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:44" (1/1) ... [2020-11-06 22:44:44,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:44" (1/1) ... [2020-11-06 22:44:44,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:44" (1/1) ... [2020-11-06 22:44:44,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:44" (1/1) ... [2020-11-06 22:44:44,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:44,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:44,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:44,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:44,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:44" (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 22:44:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:44:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:44:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:44:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:44:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:45,456 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:45,456 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-06 22:44:45,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:45 BoogieIcfgContainer [2020-11-06 22:44:45,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:45,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:45,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:45,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:45,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:44" (1/3) ... [2020-11-06 22:44:45,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44583150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:45, skipping insertion in model container [2020-11-06 22:44:45,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:44" (2/3) ... [2020-11-06 22:44:45,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44583150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:45, skipping insertion in model container [2020-11-06 22:44:45,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:45" (3/3) ... [2020-11-06 22:44:45,472 INFO L111 eAbstractionObserver]: Analyzing ICFG sina2f.c [2020-11-06 22:44:45,487 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:45,490 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:45,503 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:45,532 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:45,532 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:45,532 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:45,532 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:45,532 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:45,533 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:45,533 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:45,533 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:45,550 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-06 22:44:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-06 22:44:45,557 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:45,558 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] [2020-11-06 22:44:45,558 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:45,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:45,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1041170357, now seen corresponding path program 1 times [2020-11-06 22:44:45,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:45,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754710094] [2020-11-06 22:44:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:45,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:45,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:45,900 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 22:44:45,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754710094] [2020-11-06 22:44:45,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:45,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:45,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283742111] [2020-11-06 22:44:45,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:45,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:45,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:45,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:45,933 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-11-06 22:44:46,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:46,097 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2020-11-06 22:44:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:46,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-06 22:44:46,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:46,121 INFO L225 Difference]: With dead ends: 69 [2020-11-06 22:44:46,125 INFO L226 Difference]: Without dead ends: 33 [2020-11-06 22:44:46,129 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 22:44:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-06 22:44:46,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-06 22:44:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-06 22:44:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-11-06 22:44:46,190 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 25 [2020-11-06 22:44:46,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:46,191 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-11-06 22:44:46,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-11-06 22:44:46,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-06 22:44:46,193 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:46,193 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] [2020-11-06 22:44:46,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:46,195 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:46,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:46,196 INFO L82 PathProgramCache]: Analyzing trace with hash 20102003, now seen corresponding path program 1 times [2020-11-06 22:44:46,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:46,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902509022] [2020-11-06 22:44:46,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:46,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:46,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:46,350 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 22:44:46,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902509022] [2020-11-06 22:44:46,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:46,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:44:46,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545502548] [2020-11-06 22:44:46,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:44:46,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:46,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:44:46,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:44:46,355 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 5 states. [2020-11-06 22:44:46,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:46,565 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-11-06 22:44:46,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:44:46,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-11-06 22:44:46,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:46,569 INFO L225 Difference]: With dead ends: 61 [2020-11-06 22:44:46,569 INFO L226 Difference]: Without dead ends: 43 [2020-11-06 22:44:46,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:44:46,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-06 22:44:46,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-11-06 22:44:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-06 22:44:46,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-11-06 22:44:46,586 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2020-11-06 22:44:46,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:46,586 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-11-06 22:44:46,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:44:46,587 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-11-06 22:44:46,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-06 22:44:46,588 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:46,588 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 22:44:46,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:44:46,589 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:46,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:46,590 INFO L82 PathProgramCache]: Analyzing trace with hash -968536487, now seen corresponding path program 1 times [2020-11-06 22:44:46,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:46,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429412857] [2020-11-06 22:44:46,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:46,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:46,758 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:46,806 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:44:46,807 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:44:46,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:44:46,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:46 BoogieIcfgContainer [2020-11-06 22:44:46,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:46,880 INFO L168 Benchmark]: Toolchain (without parser) took 2340.67 ms. Allocated memory was 162.5 MB in the beginning and 213.9 MB in the end (delta: 51.4 MB). Free memory was 137.8 MB in the beginning and 189.9 MB in the end (delta: -52.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:46,881 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 162.5 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:46,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.10 ms. Allocated memory is still 162.5 MB. Free memory was 137.2 MB in the beginning and 127.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:46,883 INFO L168 Benchmark]: Boogie Preprocessor took 45.75 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 125.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:46,884 INFO L168 Benchmark]: RCFGBuilder took 591.79 ms. Allocated memory is still 162.5 MB. Free memory was 125.7 MB in the beginning and 142.8 MB in the end (delta: -17.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:46,885 INFO L168 Benchmark]: TraceAbstraction took 1414.67 ms. Allocated memory was 162.5 MB in the beginning and 213.9 MB in the end (delta: 51.4 MB). Free memory was 142.3 MB in the beginning and 189.9 MB in the end (delta: -47.6 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:46,890 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 162.5 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 274.10 ms. Allocated memory is still 162.5 MB. Free memory was 137.2 MB in the beginning and 127.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.75 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 125.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 591.79 ms. Allocated memory is still 162.5 MB. Free memory was 125.7 MB in the beginning and 142.8 MB in the end (delta: -17.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1414.67 ms. Allocated memory was 162.5 MB in the beginning and 213.9 MB in the end (delta: 51.4 MB). Free memory was 142.3 MB in the beginning and 189.9 MB in the end (delta: -47.6 MB). Peak memory consumption was 4.3 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] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 1 [L32] i=0 VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={4:0}] [L32] COND TRUE i