/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/indp5f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:42:02,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:42:02,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:42:02,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:42:02,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:42:02,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:42:02,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:42:02,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:42:02,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:42:02,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:42:02,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:42:02,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:42:02,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:42:02,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:42:02,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:42:02,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:42:02,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:42:02,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:42:02,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:42:02,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:42:02,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:42:02,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:42:02,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:42:02,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:42:02,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:42:02,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:42:02,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:42:02,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:42:02,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:42:02,851 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:42:02,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:42:02,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:42:02,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:42:02,857 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:42:02,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:42:02,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:42:02,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:42:02,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:42:02,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:42:02,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:42:02,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:42:02,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:42:02,860 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:42:02,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:42:02,861 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:42:02,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:42:02,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:42:02,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:42:02,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:42:02,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:42:02,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:02,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:42:02,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:42:02,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:42:02,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:42:02,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:42:02,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:42:02,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:42:02,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:42:03,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:42:03,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:42:03,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:42:03,347 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:42:03,348 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:42:03,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp5f.c [2020-10-23 18:42:03,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a5f09120/8440c35eae1c4f92aed8c807a6f01a26/FLAG92cd7fc3e [2020-10-23 18:42:04,041 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:42:04,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp5f.c [2020-10-23 18:42:04,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a5f09120/8440c35eae1c4f92aed8c807a6f01a26/FLAG92cd7fc3e [2020-10-23 18:42:04,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a5f09120/8440c35eae1c4f92aed8c807a6f01a26 [2020-10-23 18:42:04,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:42:04,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:42:04,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:04,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:42:04,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:42:04,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1743d1ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04, skipping insertion in model container [2020-10-23 18:42:04,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:42:04,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:42:04,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:04,668 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:42:04,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:04,728 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:42:04,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04 WrapperNode [2020-10-23 18:42:04,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:04,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:42:04,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:42:04,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:42:04,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (1/1) ... [2020-10-23 18:42:04,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:42:04,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:42:04,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:42:04,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:42:04,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:04,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:42:04,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:42:04,917 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:42:04,918 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:42:04,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:42:04,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:42:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:42:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:42:04,919 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:42:04,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:42:04,919 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:42:04,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:42:04,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:42:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:42:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:42:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:42:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:42:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:42:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:42:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:42:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:42:04,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:42:05,502 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:42:05,503 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 18:42:05,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:05 BoogieIcfgContainer [2020-10-23 18:42:05,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:42:05,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:42:05,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:42:05,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:42:05,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:04" (1/3) ... [2020-10-23 18:42:05,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de2981b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:05, skipping insertion in model container [2020-10-23 18:42:05,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:04" (2/3) ... [2020-10-23 18:42:05,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de2981b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:05, skipping insertion in model container [2020-10-23 18:42:05,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:05" (3/3) ... [2020-10-23 18:42:05,520 INFO L111 eAbstractionObserver]: Analyzing ICFG indp5f.c [2020-10-23 18:42:05,534 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:42:05,541 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:42:05,558 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:42:05,604 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:42:05,605 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:42:05,605 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:42:05,605 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:42:05,605 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:42:05,605 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:42:05,606 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:42:05,606 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:42:05,630 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-23 18:42:05,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 18:42:05,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:05,643 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] [2020-10-23 18:42:05,644 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:05,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:05,654 INFO L82 PathProgramCache]: Analyzing trace with hash -462952442, now seen corresponding path program 1 times [2020-10-23 18:42:05,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:05,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721865408] [2020-10-23 18:42:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:05,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:05,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:42:06,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721865408] [2020-10-23 18:42:06,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:06,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:42:06,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753378680] [2020-10-23 18:42:06,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:42:06,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:06,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:42:06,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:06,043 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-23 18:42:06,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:06,185 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2020-10-23 18:42:06,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:42:06,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-23 18:42:06,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:06,199 INFO L225 Difference]: With dead ends: 75 [2020-10-23 18:42:06,199 INFO L226 Difference]: Without dead ends: 34 [2020-10-23 18:42:06,206 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 [2020-10-23 18:42:06,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-23 18:42:06,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-23 18:42:06,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-23 18:42:06,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-23 18:42:06,257 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 28 [2020-10-23 18:42:06,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:06,258 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-23 18:42:06,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:42:06,258 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-23 18:42:06,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 18:42:06,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:06,259 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] [2020-10-23 18:42:06,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:42:06,260 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:06,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:06,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1113016322, now seen corresponding path program 1 times [2020-10-23 18:42:06,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:06,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925172772] [2020-10-23 18:42:06,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:06,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:06,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:06,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:42:06,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925172772] [2020-10-23 18:42:06,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:06,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:42:06,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218723640] [2020-10-23 18:42:06,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:42:06,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:06,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:42:06,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:42:06,482 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-10-23 18:42:06,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:06,730 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-10-23 18:42:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:42:06,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-23 18:42:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:06,733 INFO L225 Difference]: With dead ends: 63 [2020-10-23 18:42:06,733 INFO L226 Difference]: Without dead ends: 44 [2020-10-23 18:42:06,734 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 [2020-10-23 18:42:06,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-23 18:42:06,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-23 18:42:06,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-23 18:42:06,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-23 18:42:06,746 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 28 [2020-10-23 18:42:06,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:06,747 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-23 18:42:06,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:42:06,747 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-23 18:42:06,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-23 18:42:06,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:06,749 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:42:06,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:42:06,749 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:06,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:06,750 INFO L82 PathProgramCache]: Analyzing trace with hash 849595736, now seen corresponding path program 1 times [2020-10-23 18:42:06,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:06,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065743058] [2020-10-23 18:42:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:06,773 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:42:06,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300557997] [2020-10-23 18:42:06,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:42:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:06,902 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:06,940 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:06,981 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:42:06,981 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:42:07,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-23 18:42:07,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:07 BoogieIcfgContainer [2020-10-23 18:42:07,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:42:07,254 INFO L168 Benchmark]: Toolchain (without parser) took 2825.20 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 86.1 MB in the end (delta: 41.0 MB). Peak memory consumption was 41.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:07,255 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory was 102.0 MB in the beginning and 101.9 MB in the end (delta: 68.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:42:07,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.16 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:07,257 INFO L168 Benchmark]: Boogie Preprocessor took 89.39 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:07,258 INFO L168 Benchmark]: RCFGBuilder took 686.76 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 130.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:07,259 INFO L168 Benchmark]: TraceAbstraction took 1739.39 ms. Allocated memory is still 151.0 MB. Free memory was 130.0 MB in the beginning and 86.1 MB in the end (delta: 43.9 MB). Peak memory consumption was 44.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:07,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory was 102.0 MB in the beginning and 101.9 MB in the end (delta: 68.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 294.16 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 89.39 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 686.76 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 130.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1739.39 ms. Allocated memory is still 151.0 MB. Free memory was 130.0 MB in the beginning and 86.1 MB in the end (delta: 43.9 MB). Peak memory consumption was 44.2 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)=18, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long sum[1]; [L31] sum[0] = 1 [L32] i=0 VAL [\old(N)=0, a={1:0}, i=0, malloc(sizeof(long long)*N)={1:0}, N=1, sum={4:0}] [L32] COND TRUE i