/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/sina4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:44:45,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:44:45,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:44:45,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:44:45,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:44:45,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:44:45,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:44:45,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:44:45,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:44:45,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:44:45,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:44:45,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:44:45,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:44:45,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:44:45,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:44:45,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:44:45,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:44:45,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:44:45,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:44:45,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:44:45,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:44:45,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:44:45,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:44:45,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:44:45,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:44:45,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:44:45,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:44:45,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:44:45,161 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 22:44:45,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:44:45,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:44:45,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:44:45,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:44:45,215 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:44:45,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:44:45,216 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:44:45,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:44:45,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:44:45,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:44:45,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:44:45,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:44:45,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:44:45,218 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:44:45,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:44:45,218 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:44:45,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:44:45,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:44:45,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:44:45,219 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:44:45,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:44:45,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:44:45,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:44:45,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:44:45,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:44:45,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:44:45,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:44:45,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:44:45,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:44:45,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:44:45,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:44:45,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:44:45,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:44:45,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:44:45,615 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:44:45,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina4f.c [2020-11-06 22:44:45,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66026ed27/fb565ca6afb7475b90221d914c6bab49/FLAG36cf475a9 [2020-11-06 22:44:46,351 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:44:46,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina4f.c [2020-11-06 22:44:46,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66026ed27/fb565ca6afb7475b90221d914c6bab49/FLAG36cf475a9 [2020-11-06 22:44:46,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66026ed27/fb565ca6afb7475b90221d914c6bab49 [2020-11-06 22:44:46,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:44:46,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:44:46,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:46,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:44:46,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:44:46,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:46" (1/1) ... [2020-11-06 22:44:46,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a577e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:46, skipping insertion in model container [2020-11-06 22:44:46,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:46" (1/1) ... [2020-11-06 22:44:46,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:44:46,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:44:46,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:46,985 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:44:47,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:44:47,026 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:44:47,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:47 WrapperNode [2020-11-06 22:44:47,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:44:47,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:44:47,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:44:47,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:44:47,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:47" (1/1) ... [2020-11-06 22:44:47,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:47" (1/1) ... [2020-11-06 22:44:47,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:47" (1/1) ... [2020-11-06 22:44:47,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:47" (1/1) ... [2020-11-06 22:44:47,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:47" (1/1) ... [2020-11-06 22:44:47,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:47" (1/1) ... [2020-11-06 22:44:47,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:47" (1/1) ... [2020-11-06 22:44:47,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:44:47,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:44:47,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:44:47,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:44:47,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:47" (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 22:44:47,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:44:47,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:44:47,157 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:44:47,157 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:44:47,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:44:47,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:44:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:44:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:44:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:44:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:44:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:44:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:44:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:44:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:44:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:44:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:44:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:44:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:44:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:44:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:44:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:44:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:44:47,572 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:44:47,573 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-06 22:44:47,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:47 BoogieIcfgContainer [2020-11-06 22:44:47,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:44:47,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:44:47,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:44:47,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:44:47,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:46" (1/3) ... [2020-11-06 22:44:47,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4615587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:47, skipping insertion in model container [2020-11-06 22:44:47,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:47" (2/3) ... [2020-11-06 22:44:47,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4615587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:47, skipping insertion in model container [2020-11-06 22:44:47,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:47" (3/3) ... [2020-11-06 22:44:47,585 INFO L111 eAbstractionObserver]: Analyzing ICFG sina4f.c [2020-11-06 22:44:47,602 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:44:47,607 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:44:47,634 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:44:47,685 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:44:47,685 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:44:47,685 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:44:47,686 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:44:47,686 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:44:47,686 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:44:47,686 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:44:47,687 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:44:47,714 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-06 22:44:47,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-06 22:44:47,726 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:47,727 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] [2020-11-06 22:44:47,728 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:47,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:47,740 INFO L82 PathProgramCache]: Analyzing trace with hash -386611775, now seen corresponding path program 1 times [2020-11-06 22:44:47,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:47,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292154651] [2020-11-06 22:44:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:48,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:48,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:48,170 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 22:44:48,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292154651] [2020-11-06 22:44:48,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:48,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:44:48,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150658247] [2020-11-06 22:44:48,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:44:48,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:48,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:44:48,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:44:48,197 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-11-06 22:44:48,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:48,421 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2020-11-06 22:44:48,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:44:48,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-06 22:44:48,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:48,443 INFO L225 Difference]: With dead ends: 75 [2020-11-06 22:44:48,447 INFO L226 Difference]: Without dead ends: 36 [2020-11-06 22:44:48,451 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 22:44:48,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-06 22:44:48,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-06 22:44:48,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-06 22:44:48,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-11-06 22:44:48,513 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 27 [2020-11-06 22:44:48,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:48,513 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-11-06 22:44:48,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:44:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-11-06 22:44:48,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-06 22:44:48,515 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:48,516 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] [2020-11-06 22:44:48,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:44:48,516 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:48,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:48,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1914210815, now seen corresponding path program 1 times [2020-11-06 22:44:48,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:48,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489706970] [2020-11-06 22:44:48,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:48,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:44:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:48,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:44:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:44:48,719 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 22:44:48,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489706970] [2020-11-06 22:44:48,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:44:48,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:44:48,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175265899] [2020-11-06 22:44:48,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:44:48,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:44:48,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:44:48,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:44:48,727 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2020-11-06 22:44:49,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:44:49,209 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-11-06 22:44:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:44:49,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-11-06 22:44:49,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:44:49,224 INFO L225 Difference]: With dead ends: 69 [2020-11-06 22:44:49,224 INFO L226 Difference]: Without dead ends: 48 [2020-11-06 22:44:49,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:44:49,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-06 22:44:49,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2020-11-06 22:44:49,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-06 22:44:49,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-11-06 22:44:49,241 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 27 [2020-11-06 22:44:49,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:44:49,242 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-11-06 22:44:49,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:44:49,242 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-11-06 22:44:49,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-06 22:44:49,243 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:44:49,243 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] [2020-11-06 22:44:49,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:44:49,244 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:44:49,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:44:49,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1148507143, now seen corresponding path program 1 times [2020-11-06 22:44:49,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:44:49,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816080325] [2020-11-06 22:44:49,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:44:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:49,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:44:49,359 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:44:49,400 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:44:49,401 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:44:49,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:44:49,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:44:49 BoogieIcfgContainer [2020-11-06 22:44:49,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:44:49,458 INFO L168 Benchmark]: Toolchain (without parser) took 2708.49 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.2 MB in the beginning and 151.5 MB in the end (delta: -25.3 MB). Peak memory consumption was 5.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:49,459 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:49,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.83 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:49,461 INFO L168 Benchmark]: Boogie Preprocessor took 44.59 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 113.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:49,461 INFO L168 Benchmark]: RCFGBuilder took 501.33 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 95.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-11-06 22:44:49,462 INFO L168 Benchmark]: TraceAbstraction took 1878.20 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 95.3 MB in the beginning and 151.5 MB in the end (delta: -56.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:44:49,466 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 269.83 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.59 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 113.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 501.33 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 95.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1878.20 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 95.3 MB in the beginning and 151.5 MB in the end (delta: -56.2 MB). There was no memory consumed. 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); [L30] long long *b = malloc(sizeof(long long)*N); [L32] sum[0] = 0 [L33] i=0 VAL [\old(N)=0, a={-1:0}, b={-2:0}, i=0, malloc(sizeof(long long)*N)={-2:0}, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={4:0}] [L33] COND TRUE i