/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-b8ad66e [2020-10-23 18:42:38,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:42:38,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:42:38,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:42:38,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:42:38,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:42:38,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:42:38,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:42:38,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:42:38,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:42:38,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:42:38,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:42:38,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:42:38,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:42:38,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:42:38,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:42:38,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:42:38,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:42:38,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:42:38,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:42:38,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:42:38,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:42:38,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:42:38,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:42:38,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:42:38,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:42:38,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:42:38,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:42:38,580 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 18:42:38,638 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:42:38,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:42:38,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:42:38,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:42:38,642 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:42:38,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:42:38,643 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:42:38,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:42:38,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:42:38,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:42:38,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:42:38,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:42:38,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:42:38,645 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:42:38,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:42:38,646 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:42:38,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:42:38,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:42:38,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:42:38,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:42:38,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:42:38,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:42:38,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:42:38,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:42:38,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:42:38,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:42:38,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:42:38,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:42:38,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:42:38,649 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:42:39,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:42:39,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:42:39,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:42:39,118 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:42:39,119 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:42:39,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina4f.c [2020-10-23 18:42:39,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb4b293ef/5b4246c7859c4923a86dc7bd2ec54ef2/FLAGa40533314 [2020-10-23 18:42:39,786 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:42:39,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina4f.c [2020-10-23 18:42:39,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb4b293ef/5b4246c7859c4923a86dc7bd2ec54ef2/FLAGa40533314 [2020-10-23 18:42:40,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb4b293ef/5b4246c7859c4923a86dc7bd2ec54ef2 [2020-10-23 18:42:40,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:42:40,164 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:42:40,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:40,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:42:40,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:42:40,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:40" (1/1) ... [2020-10-23 18:42:40,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@786f2e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40, skipping insertion in model container [2020-10-23 18:42:40,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:42:40" (1/1) ... [2020-10-23 18:42:40,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:42:40,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:42:40,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:40,392 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:42:40,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:42:40,440 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:42:40,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40 WrapperNode [2020-10-23 18:42:40,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:42:40,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:42:40,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:42:40,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:42:40,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2020-10-23 18:42:40,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2020-10-23 18:42:40,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2020-10-23 18:42:40,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2020-10-23 18:42:40,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2020-10-23 18:42:40,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2020-10-23 18:42:40,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (1/1) ... [2020-10-23 18:42:40,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:42:40,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:42:40,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:42:40,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:42:40,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (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 18:42:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:42:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:42:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:42:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:42:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:42:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:42:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:42:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:42:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:42:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:42:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:42:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:42:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:42:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:42:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:42:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:42:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:42:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:42:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:42:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:42:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:42:40,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:42:41,224 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:42:41,225 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 18:42:41,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:41 BoogieIcfgContainer [2020-10-23 18:42:41,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:42:41,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:42:41,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:42:41,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:42:41,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:42:40" (1/3) ... [2020-10-23 18:42:41,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7912ae17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:41, skipping insertion in model container [2020-10-23 18:42:41,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:42:40" (2/3) ... [2020-10-23 18:42:41,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7912ae17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:42:41, skipping insertion in model container [2020-10-23 18:42:41,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:42:41" (3/3) ... [2020-10-23 18:42:41,243 INFO L111 eAbstractionObserver]: Analyzing ICFG sina4f.c [2020-10-23 18:42:41,257 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:42:41,264 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:42:41,279 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:42:41,325 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:42:41,325 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:42:41,326 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:42:41,326 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:42:41,326 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:42:41,326 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:42:41,326 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:42:41,326 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:42:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-23 18:42:41,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-23 18:42:41,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:41,364 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] [2020-10-23 18:42:41,365 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:41,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:41,374 INFO L82 PathProgramCache]: Analyzing trace with hash -386611775, now seen corresponding path program 1 times [2020-10-23 18:42:41,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:41,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332272971] [2020-10-23 18:42:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:41,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:41,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:41,742 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 18:42:41,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332272971] [2020-10-23 18:42:41,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:41,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:42:41,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627340538] [2020-10-23 18:42:41,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:42:41,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:41,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:42:41,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:42:41,768 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-10-23 18:42:41,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:41,899 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2020-10-23 18:42:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:42:41,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-23 18:42:41,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:41,910 INFO L225 Difference]: With dead ends: 75 [2020-10-23 18:42:41,910 INFO L226 Difference]: Without dead ends: 36 [2020-10-23 18:42:41,914 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 18:42:41,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-23 18:42:41,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-23 18:42:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-23 18:42:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-23 18:42:41,960 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 27 [2020-10-23 18:42:41,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:41,961 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-23 18:42:41,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:42:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-23 18:42:41,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-23 18:42:41,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:41,962 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] [2020-10-23 18:42:41,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:42:41,963 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:41,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:41,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1914210815, now seen corresponding path program 1 times [2020-10-23 18:42:41,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:41,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389735189] [2020-10-23 18:42:41,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:42,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:42:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:42,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:42:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:42:42,173 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 18:42:42,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389735189] [2020-10-23 18:42:42,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:42:42,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:42:42,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192332949] [2020-10-23 18:42:42,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:42:42,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:42:42,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:42:42,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:42:42,185 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2020-10-23 18:42:42,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:42:42,445 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-10-23 18:42:42,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:42:42,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-23 18:42:42,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:42:42,449 INFO L225 Difference]: With dead ends: 69 [2020-10-23 18:42:42,450 INFO L226 Difference]: Without dead ends: 48 [2020-10-23 18:42:42,451 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 18:42:42,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-23 18:42:42,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2020-10-23 18:42:42,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-23 18:42:42,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-23 18:42:42,466 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 27 [2020-10-23 18:42:42,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:42:42,467 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-23 18:42:42,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:42:42,467 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-23 18:42:42,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-23 18:42:42,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:42:42,469 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] [2020-10-23 18:42:42,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:42:42,469 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:42:42,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:42:42,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1148507143, now seen corresponding path program 1 times [2020-10-23 18:42:42,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:42:42,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8380204] [2020-10-23 18:42:42,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:42:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:42,538 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:42:42,618 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:42:42,668 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:42:42,668 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:42:42,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:42:42,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:42:42 BoogieIcfgContainer [2020-10-23 18:42:42,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:42:42,756 INFO L168 Benchmark]: Toolchain (without parser) took 2595.46 ms. Allocated memory is still 170.9 MB. Free memory was 145.6 MB in the beginning and 71.1 MB in the end (delta: 74.5 MB). Peak memory consumption was 74.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:42,757 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 170.9 MB. Free memory is still 143.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:42:42,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.61 ms. Allocated memory is still 170.9 MB. Free memory was 145.0 MB in the beginning and 134.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:42,759 INFO L168 Benchmark]: Boogie Preprocessor took 50.42 ms. Allocated memory is still 170.9 MB. Free memory was 134.9 MB in the beginning and 133.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:42,760 INFO L168 Benchmark]: RCFGBuilder took 733.43 ms. Allocated memory is still 170.9 MB. Free memory was 133.2 MB in the beginning and 151.9 MB in the end (delta: -18.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:42,761 INFO L168 Benchmark]: TraceAbstraction took 1519.77 ms. Allocated memory is still 170.9 MB. Free memory was 151.4 MB in the beginning and 71.1 MB in the end (delta: 80.2 MB). Peak memory consumption was 79.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:42:42,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 170.9 MB. Free memory is still 143.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 274.61 ms. Allocated memory is still 170.9 MB. Free memory was 145.0 MB in the beginning and 134.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.42 ms. Allocated memory is still 170.9 MB. Free memory was 134.9 MB in the beginning and 133.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 733.43 ms. Allocated memory is still 170.9 MB. Free memory was 133.2 MB in the beginning and 151.9 MB in the end (delta: -18.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1519.77 ms. Allocated memory is still 170.9 MB. Free memory was 151.4 MB in the beginning and 71.1 MB in the end (delta: 80.2 MB). Peak memory consumption was 79.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [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)={-1:0}, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={4:0}] [L33] COND TRUE i