/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/brs3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:43:53,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:43:53,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:43:53,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:43:53,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:43:53,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:43:53,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:43:53,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:43:53,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:43:53,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:43:53,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:43:53,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:43:53,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:43:53,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:43:53,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:43:53,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:43:53,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:43:53,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:43:53,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:43:53,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:43:53,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:43:53,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:43:53,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:43:53,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:43:53,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:43:53,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:43:53,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:43:53,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:43:53,721 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 22:43:53,775 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:43:53,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:43:53,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:43:53,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:43:53,780 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:43:53,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:43:53,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:43:53,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:43:53,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:43:53,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:43:53,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:43:53,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:43:53,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:43:53,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:43:53,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:43:53,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:43:53,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:43:53,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:43:53,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:43:53,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:43:53,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:43:53,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:43:53,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:43:53,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:43:53,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:43:53,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:43:53,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:43:53,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:43:53,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:43:53,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:43:54,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:43:54,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:43:54,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:43:54,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:43:54,260 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:43:54,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs3f.c [2020-11-06 22:43:54,350 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a873a4ca/eb504644ef8e465bacefc8ae20bbdf81/FLAGf7aba4432 [2020-11-06 22:43:54,969 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:43:54,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs3f.c [2020-11-06 22:43:54,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a873a4ca/eb504644ef8e465bacefc8ae20bbdf81/FLAGf7aba4432 [2020-11-06 22:43:55,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a873a4ca/eb504644ef8e465bacefc8ae20bbdf81 [2020-11-06 22:43:55,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:43:55,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:43:55,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:43:55,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:43:55,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:43:55,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:55" (1/1) ... [2020-11-06 22:43:55,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a79778e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:55, skipping insertion in model container [2020-11-06 22:43:55,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:55" (1/1) ... [2020-11-06 22:43:55,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:43:55,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:43:55,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:43:55,728 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:43:55,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:43:55,802 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:43:55,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:55 WrapperNode [2020-11-06 22:43:55,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:43:55,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:43:55,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:43:55,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:43:55,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:55" (1/1) ... [2020-11-06 22:43:55,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:55" (1/1) ... [2020-11-06 22:43:55,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:55" (1/1) ... [2020-11-06 22:43:55,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:55" (1/1) ... [2020-11-06 22:43:55,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:55" (1/1) ... [2020-11-06 22:43:55,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:55" (1/1) ... [2020-11-06 22:43:55,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:55" (1/1) ... [2020-11-06 22:43:55,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:43:55,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:43:55,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:43:55,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:43:55,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:55" (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 22:43:55,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:43:55,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:43:55,980 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:43:55,980 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:43:55,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:43:55,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:43:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:43:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:43:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:43:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:43:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:43:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:43:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:43:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:43:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:43:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:43:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:43:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:43:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:43:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:43:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:43:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:43:56,434 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:43:56,434 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-06 22:43:56,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:56 BoogieIcfgContainer [2020-11-06 22:43:56,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:43:56,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:43:56,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:43:56,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:43:56,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:43:55" (1/3) ... [2020-11-06 22:43:56,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30419e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:56, skipping insertion in model container [2020-11-06 22:43:56,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:55" (2/3) ... [2020-11-06 22:43:56,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30419e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:56, skipping insertion in model container [2020-11-06 22:43:56,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:56" (3/3) ... [2020-11-06 22:43:56,447 INFO L111 eAbstractionObserver]: Analyzing ICFG brs3f.c [2020-11-06 22:43:56,462 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:43:56,465 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:43:56,476 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:43:56,504 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:43:56,505 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:43:56,505 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:43:56,505 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:43:56,505 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:43:56,505 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:43:56,505 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:43:56,506 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:43:56,525 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-11-06 22:43:56,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-06 22:43:56,532 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:56,533 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] [2020-11-06 22:43:56,533 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:56,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:56,540 INFO L82 PathProgramCache]: Analyzing trace with hash 288317380, now seen corresponding path program 1 times [2020-11-06 22:43:56,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:56,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427276688] [2020-11-06 22:43:56,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:56,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:56,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:43:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:56,928 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 22:43:56,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427276688] [2020-11-06 22:43:56,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:43:56,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:43:56,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566791271] [2020-11-06 22:43:56,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:43:56,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:56,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:43:56,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:43:56,957 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-11-06 22:43:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:57,115 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-11-06 22:43:57,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:43:57,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-11-06 22:43:57,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:57,128 INFO L225 Difference]: With dead ends: 61 [2020-11-06 22:43:57,128 INFO L226 Difference]: Without dead ends: 27 [2020-11-06 22:43:57,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:43:57,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-06 22:43:57,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-06 22:43:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-06 22:43:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-11-06 22:43:57,205 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 22 [2020-11-06 22:43:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:57,206 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-11-06 22:43:57,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:43:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-11-06 22:43:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-06 22:43:57,208 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:57,208 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] [2020-11-06 22:43:57,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:43:57,210 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:57,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:57,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1231035376, now seen corresponding path program 1 times [2020-11-06 22:43:57,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:57,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689259515] [2020-11-06 22:43:57,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:57,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:57,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:43:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:57,525 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 22:43:57,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689259515] [2020-11-06 22:43:57,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:43:57,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:43:57,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379209239] [2020-11-06 22:43:57,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:43:57,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:57,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:43:57,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:43:57,533 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-11-06 22:43:57,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:57,747 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-11-06 22:43:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:43:57,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-11-06 22:43:57,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:57,751 INFO L225 Difference]: With dead ends: 47 [2020-11-06 22:43:57,751 INFO L226 Difference]: Without dead ends: 33 [2020-11-06 22:43:57,752 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 22:43:57,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-06 22:43:57,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-11-06 22:43:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-06 22:43:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-06 22:43:57,768 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2020-11-06 22:43:57,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:57,769 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-06 22:43:57,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:43:57,769 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-06 22:43:57,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-06 22:43:57,773 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:57,773 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] [2020-11-06 22:43:57,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:43:57,773 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:57,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:57,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1894992585, now seen corresponding path program 1 times [2020-11-06 22:43:57,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:57,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223130441] [2020-11-06 22:43:57,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:57,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:57,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:43:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:57,958 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 22:43:57,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223130441] [2020-11-06 22:43:57,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:43:57,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 22:43:57,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317465289] [2020-11-06 22:43:57,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:43:57,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:57,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:43:57,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:43:57,962 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2020-11-06 22:43:58,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:58,293 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-11-06 22:43:58,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:43:58,294 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-11-06 22:43:58,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:58,295 INFO L225 Difference]: With dead ends: 41 [2020-11-06 22:43:58,295 INFO L226 Difference]: Without dead ends: 34 [2020-11-06 22:43:58,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-11-06 22:43:58,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-06 22:43:58,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-11-06 22:43:58,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-06 22:43:58,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-11-06 22:43:58,304 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 28 [2020-11-06 22:43:58,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:58,305 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-11-06 22:43:58,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:43:58,305 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-11-06 22:43:58,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-06 22:43:58,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:58,307 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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 22:43:58,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:43:58,307 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:58,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:58,308 INFO L82 PathProgramCache]: Analyzing trace with hash 427046459, now seen corresponding path program 1 times [2020-11-06 22:43:58,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:58,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880884153] [2020-11-06 22:43:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:58,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:43:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:58,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:43:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:43:58,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880884153] [2020-11-06 22:43:58,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445128300] [2020-11-06 22:43:58,603 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 22:43:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:43:58,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-06 22:43:58,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:43:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:43:58,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:43:58,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-11-06 22:43:58,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691599337] [2020-11-06 22:43:58,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 22:43:58,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:43:58,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 22:43:58,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:43:58,859 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 11 states. [2020-11-06 22:43:59,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:43:59,126 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-11-06 22:43:59,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 22:43:59,127 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-11-06 22:43:59,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:43:59,129 INFO L225 Difference]: With dead ends: 57 [2020-11-06 22:43:59,129 INFO L226 Difference]: Without dead ends: 40 [2020-11-06 22:43:59,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-11-06 22:43:59,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-06 22:43:59,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2020-11-06 22:43:59,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-06 22:43:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-11-06 22:43:59,139 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 31 [2020-11-06 22:43:59,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:43:59,139 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-11-06 22:43:59,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 22:43:59,139 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-11-06 22:43:59,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-06 22:43:59,141 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:43:59,141 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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 22:43:59,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:43:59,353 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:43:59,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:43:59,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1229914284, now seen corresponding path program 1 times [2020-11-06 22:43:59,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:43:59,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83438785] [2020-11-06 22:43:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:43:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:43:59,401 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:43:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:43:59,439 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:43:59,475 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:43:59,475 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:43:59,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 22:43:59,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:43:59 BoogieIcfgContainer [2020-11-06 22:43:59,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:43:59,559 INFO L168 Benchmark]: Toolchain (without parser) took 4206.64 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 134.1 MB in the beginning and 131.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 36.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:43:59,561 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 106.8 MB in the beginning and 106.7 MB in the end (delta: 131.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:43:59,564 INFO L168 Benchmark]: CACSL2BoogieTranslator took 445.61 ms. Allocated memory is still 158.3 MB. Free memory was 133.5 MB in the beginning and 123.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:43:59,564 INFO L168 Benchmark]: Boogie Preprocessor took 79.98 ms. Allocated memory is still 158.3 MB. Free memory was 123.6 MB in the beginning and 122.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:43:59,566 INFO L168 Benchmark]: RCFGBuilder took 548.51 ms. Allocated memory is still 158.3 MB. Free memory was 122.0 MB in the beginning and 135.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:43:59,570 INFO L168 Benchmark]: TraceAbstraction took 3117.29 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 135.0 MB in the beginning and 131.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 37.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:43:59,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 106.8 MB in the beginning and 106.7 MB in the end (delta: 131.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 445.61 ms. Allocated memory is still 158.3 MB. Free memory was 133.5 MB in the beginning and 123.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.98 ms. Allocated memory is still 158.3 MB. Free memory was 123.6 MB in the beginning and 122.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 548.51 ms. Allocated memory is still 158.3 MB. Free memory was 122.0 MB in the beginning and 135.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3117.29 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 135.0 MB in the beginning and 131.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 37.8 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=2] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=2] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=2] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=2] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=2, sum={5:0}] [L31] COND TRUE i