/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/s22iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:42:22,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:42:22,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:42:22,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:42:22,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:42:22,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:42:22,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:42:22,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:42:22,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:42:22,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:42:22,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:42:22,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:42:22,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:42:22,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:42:22,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:42:22,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:42:22,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:42:22,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:42:22,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:42:22,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:42:22,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:42:22,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:42:22,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:42:22,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:42:22,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:42:22,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:42:22,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:42:22,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:42:22,276 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 18:42:22,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:42:22,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:42:22,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:42:22,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:42:22,306 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:42:22,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:42:22,307 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:42:22,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:42:22,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:42:22,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:42:22,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:42:22,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:42:22,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:42:22,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:42:22,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:42:22,309 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:42:22,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:42:22,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:42:22,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:42:22,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:42:22,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:42:22,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:22,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:42:22,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:42:22,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:42:22,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:42:22,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:42:22,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:42:22,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:42:22,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:42:22,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:42:22,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:42:22,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:42:22,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:42:22,770 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:42:22,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s22iff.c [2020-10-23 18:42:22,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d090788c/91b07885ba5c41b0ad62a57405d2216c/FLAGd906136ba [2020-10-23 18:42:23,428 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:42:23,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s22iff.c [2020-10-23 18:42:23,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d090788c/91b07885ba5c41b0ad62a57405d2216c/FLAGd906136ba [2020-10-23 18:42:23,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d090788c/91b07885ba5c41b0ad62a57405d2216c [2020-10-23 18:42:23,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:42:23,831 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:42:23,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:23,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:42:23,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:42:23,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:23" (1/1) ... [2020-10-23 18:42:23,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767ac476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:23, skipping insertion in model container [2020-10-23 18:42:23,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:23" (1/1) ... [2020-10-23 18:42:23,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:42:23,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:42:24,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:24,134 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:42:24,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:24,203 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:42:24,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:24 WrapperNode [2020-10-23 18:42:24,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:24,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:42:24,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:42:24,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:42:24,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:24" (1/1) ... [2020-10-23 18:42:24,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:24" (1/1) ... [2020-10-23 18:42:24,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:24" (1/1) ... [2020-10-23 18:42:24,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:24" (1/1) ... [2020-10-23 18:42:24,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:24" (1/1) ... [2020-10-23 18:42:24,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:24" (1/1) ... [2020-10-23 18:42:24,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:24" (1/1) ... [2020-10-23 18:42:24,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:42:24,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:42:24,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:42:24,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:42:24,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:24" (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 18:42:24,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:42:24,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:42:24,376 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:42:24,376 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:42:24,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:42:24,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:42:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:42:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:42:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:42:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:42:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:42:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:42:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:42:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:42:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:42:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:42:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:42:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:42:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:42:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:42:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:42:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:42:24,795 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:42:24,796 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 18:42:24,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:24 BoogieIcfgContainer [2020-10-23 18:42:24,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:42:24,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:42:24,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:42:24,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:42:24,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:23" (1/3) ... [2020-10-23 18:42:24,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fa09be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:24, skipping insertion in model container [2020-10-23 18:42:24,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:24" (2/3) ... [2020-10-23 18:42:24,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fa09be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:24, skipping insertion in model container [2020-10-23 18:42:24,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:24" (3/3) ... [2020-10-23 18:42:24,813 INFO L111 eAbstractionObserver]: Analyzing ICFG s22iff.c [2020-10-23 18:42:24,826 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:42:24,832 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:42:24,843 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:42:24,875 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:42:24,875 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:42:24,875 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:42:24,875 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:42:24,875 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:42:24,876 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:42:24,876 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:42:24,876 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:42:24,894 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-23 18:42:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 18:42:24,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:24,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:42:24,902 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:24,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:24,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1702539242, now seen corresponding path program 1 times [2020-10-23 18:42:24,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:24,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356269165] [2020-10-23 18:42:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:25,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:25,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:25,266 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 18:42:25,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356269165] [2020-10-23 18:42:25,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:25,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:42:25,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15421800] [2020-10-23 18:42:25,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:42:25,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:25,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:42:25,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:25,300 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-10-23 18:42:25,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:25,547 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2020-10-23 18:42:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:42:25,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-23 18:42:25,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:25,562 INFO L225 Difference]: With dead ends: 67 [2020-10-23 18:42:25,563 INFO L226 Difference]: Without dead ends: 30 [2020-10-23 18:42:25,569 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 18:42:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-23 18:42:25,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-23 18:42:25,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-23 18:42:25,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-23 18:42:25,625 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2020-10-23 18:42:25,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:25,626 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-23 18:42:25,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:42:25,626 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-23 18:42:25,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 18:42:25,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:25,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:42:25,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:42:25,628 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:25,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:25,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1952199574, now seen corresponding path program 1 times [2020-10-23 18:42:25,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:25,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425751276] [2020-10-23 18:42:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:25,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:25,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:25,821 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 18:42:25,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425751276] [2020-10-23 18:42:25,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:25,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:42:25,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656965712] [2020-10-23 18:42:25,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:42:25,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:25,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:42:25,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:42:25,826 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-10-23 18:42:26,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:26,120 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2020-10-23 18:42:26,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:42:26,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-23 18:42:26,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:26,123 INFO L225 Difference]: With dead ends: 53 [2020-10-23 18:42:26,123 INFO L226 Difference]: Without dead ends: 38 [2020-10-23 18:42:26,124 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 18:42:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-23 18:42:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-10-23 18:42:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-23 18:42:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-23 18:42:26,139 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-10-23 18:42:26,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:26,140 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-23 18:42:26,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:42:26,140 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-23 18:42:26,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-23 18:42:26,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:26,142 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] [2020-10-23 18:42:26,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:42:26,142 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:26,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:26,143 INFO L82 PathProgramCache]: Analyzing trace with hash -856996485, now seen corresponding path program 1 times [2020-10-23 18:42:26,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:26,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939842103] [2020-10-23 18:42:26,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:26,250 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:26,298 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:26,343 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:42:26,344 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:42:26,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:42:26,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:26 BoogieIcfgContainer [2020-10-23 18:42:26,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:42:26,441 INFO L168 Benchmark]: Toolchain (without parser) took 2610.89 ms. Allocated memory is still 155.2 MB. Free memory was 130.9 MB in the beginning and 61.3 MB in the end (delta: 69.5 MB). Peak memory consumption was 70.8 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:26,443 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 155.2 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:42:26,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.21 ms. Allocated memory is still 155.2 MB. Free memory was 130.4 MB in the beginning and 120.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:26,447 INFO L168 Benchmark]: Boogie Preprocessor took 81.07 ms. Allocated memory is still 155.2 MB. Free memory was 120.2 MB in the beginning and 118.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:26,448 INFO L168 Benchmark]: RCFGBuilder took 512.58 ms. Allocated memory is still 155.2 MB. Free memory was 118.4 MB in the beginning and 134.7 MB in the end (delta: -16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:26,450 INFO L168 Benchmark]: TraceAbstraction took 1630.84 ms. Allocated memory is still 155.2 MB. Free memory was 134.2 MB in the beginning and 61.3 MB in the end (delta: 72.9 MB). Peak memory consumption was 73.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:26,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 155.2 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 370.21 ms. Allocated memory is still 155.2 MB. Free memory was 130.4 MB in the beginning and 120.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 81.07 ms. Allocated memory is still 155.2 MB. Free memory was 120.2 MB in the beginning and 118.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 512.58 ms. Allocated memory is still 155.2 MB. Free memory was 118.4 MB in the beginning and 134.7 MB in the end (delta: -16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1630.84 ms. Allocated memory is still 155.2 MB. Free memory was 134.2 MB in the beginning and 61.3 MB in the end (delta: 72.9 MB). Peak memory consumption was 73.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}] [L32] COND TRUE i