/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/loops/sum03-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:43:12,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:43:12,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:43:12,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:43:12,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:43:12,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:43:12,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:43:12,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:43:12,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:43:12,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:43:12,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:43:12,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:43:12,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:43:12,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:43:12,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:43:12,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:43:12,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:43:12,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:43:12,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:43:12,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:43:12,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:43:12,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:43:12,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:43:12,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:43:12,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:43:12,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:43:12,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:43:12,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:43:12,592 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 18:43:12,650 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:43:12,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:43:12,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:43:12,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:43:12,656 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:43:12,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:43:12,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:43:12,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:43:12,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:43:12,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:43:12,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:43:12,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:43:12,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:43:12,660 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:43:12,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:43:12,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:43:12,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:43:12,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:43:12,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:43:12,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:43:12,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:43:12,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:43:12,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:43:12,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:43:12,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:43:12,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:43:12,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:43:12,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:43:12,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:43:12,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:43:13,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:43:13,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:43:13,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:43:13,107 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:43:13,112 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:43:13,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-2.i [2020-10-23 18:43:13,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64f94c1da/f03a397a1e9a4903bc8fa05f4ca48ac1/FLAG7ff84c227 [2020-10-23 18:43:13,774 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:43:13,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-2.i [2020-10-23 18:43:13,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64f94c1da/f03a397a1e9a4903bc8fa05f4ca48ac1/FLAG7ff84c227 [2020-10-23 18:43:14,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64f94c1da/f03a397a1e9a4903bc8fa05f4ca48ac1 [2020-10-23 18:43:14,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:43:14,141 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:43:14,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:14,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:43:14,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:43:14,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:14" (1/1) ... [2020-10-23 18:43:14,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e822ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:14, skipping insertion in model container [2020-10-23 18:43:14,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:14" (1/1) ... [2020-10-23 18:43:14,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:43:14,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:43:14,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:14,386 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:43:14,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:14,420 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:43:14,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:14 WrapperNode [2020-10-23 18:43:14,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:14,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:43:14,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:43:14,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:43:14,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:14" (1/1) ... [2020-10-23 18:43:14,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:14" (1/1) ... [2020-10-23 18:43:14,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:14" (1/1) ... [2020-10-23 18:43:14,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:14" (1/1) ... [2020-10-23 18:43:14,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:14" (1/1) ... [2020-10-23 18:43:14,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:14" (1/1) ... [2020-10-23 18:43:14,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:14" (1/1) ... [2020-10-23 18:43:14,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:43:14,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:43:14,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:43:14,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:43:14,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:14" (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 18:43:14,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:43:14,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:43:14,529 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:43:14,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:43:14,529 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:43:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:43:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:43:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 18:43:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 18:43:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:43:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:43:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:43:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 18:43:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:43:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:43:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:43:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:43:14,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:43:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:43:14,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:43:14,966 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:43:14,966 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:43:14,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:14 BoogieIcfgContainer [2020-10-23 18:43:14,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:43:14,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:43:14,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:43:14,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:43:14,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:43:14" (1/3) ... [2020-10-23 18:43:14,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790b623b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:14, skipping insertion in model container [2020-10-23 18:43:14,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:14" (2/3) ... [2020-10-23 18:43:14,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790b623b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:14, skipping insertion in model container [2020-10-23 18:43:14,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:14" (3/3) ... [2020-10-23 18:43:14,992 INFO L111 eAbstractionObserver]: Analyzing ICFG sum03-2.i [2020-10-23 18:43:15,030 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:43:15,039 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:43:15,054 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:43:15,098 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:43:15,098 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:43:15,099 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:43:15,099 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:43:15,099 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:43:15,099 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:43:15,099 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:43:15,099 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:43:15,124 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-23 18:43:15,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-23 18:43:15,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:15,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:15,133 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:15,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:15,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1870094040, now seen corresponding path program 1 times [2020-10-23 18:43:15,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:15,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965652250] [2020-10-23 18:43:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:15,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:15,577 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 18:43:15,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965652250] [2020-10-23 18:43:15,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:15,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 18:43:15,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822615182] [2020-10-23 18:43:15,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 18:43:15,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:15,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 18:43:15,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:43:15,604 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 7 states. [2020-10-23 18:43:17,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:17,952 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2020-10-23 18:43:17,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 18:43:17,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-23 18:43:17,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:17,965 INFO L225 Difference]: With dead ends: 40 [2020-10-23 18:43:17,966 INFO L226 Difference]: Without dead ends: 23 [2020-10-23 18:43:17,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-23 18:43:17,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-23 18:43:18,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-23 18:43:18,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-23 18:43:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-23 18:43:18,036 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2020-10-23 18:43:18,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:18,036 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-23 18:43:18,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 18:43:18,037 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-23 18:43:18,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-23 18:43:18,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:18,038 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:18,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:43:18,038 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:18,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:18,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1762573448, now seen corresponding path program 1 times [2020-10-23 18:43:18,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:18,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021883692] [2020-10-23 18:43:18,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:18,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:18,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:43:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:18,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021883692] [2020-10-23 18:43:18,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031047560] [2020-10-23 18:43:18,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:43:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:18,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-23 18:43:18,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:43:18,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:18,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:43:18,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2020-10-23 18:43:18,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993283593] [2020-10-23 18:43:18,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 18:43:18,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:18,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 18:43:18,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-23 18:43:18,504 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 12 states. [2020-10-23 18:43:18,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:18,843 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-10-23 18:43:18,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:43:18,844 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-23 18:43:18,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:18,845 INFO L225 Difference]: With dead ends: 25 [2020-10-23 18:43:18,845 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:43:18,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-10-23 18:43:18,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:43:18,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:43:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:43:18,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:43:18,848 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-23 18:43:18,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:18,849 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:43:18,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 18:43:18,849 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:43:18,849 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:43:19,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-23 18:43:19,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:43:19,268 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-23 18:43:19,268 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 18:43:19,269 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-23 18:43:19,269 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-23 18:43:19,269 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-23 18:43:19,269 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:43:19,270 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-23 18:43:19,270 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:43:19,270 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:43:19,270 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:43:19,270 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:43:19,270 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:43:19,270 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 20 29) the Hoare annotation is: true [2020-10-23 18:43:19,271 INFO L270 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (let ((.cse0 (* 2 main_~x~0))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0))) [2020-10-23 18:43:19,271 INFO L270 CegarLoopResult]: At program point L27-1(lines 24 28) the Hoare annotation is: (let ((.cse0 (* 2 main_~x~0))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0))) [2020-10-23 18:43:19,271 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 20 29) no Hoare annotation was computed. [2020-10-23 18:43:19,271 INFO L274 CegarLoopResult]: For program point L24-2(lines 20 29) no Hoare annotation was computed. [2020-10-23 18:43:19,271 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-23 18:43:19,272 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 13 18) the Hoare annotation is: true [2020-10-23 18:43:19,272 INFO L274 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:43:19,272 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-23 18:43:19,272 INFO L274 CegarLoopResult]: For program point L14-2(lines 13 18) no Hoare annotation was computed. [2020-10-23 18:43:19,272 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 13 18) no Hoare annotation was computed. [2020-10-23 18:43:19,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:43:19 BoogieIcfgContainer [2020-10-23 18:43:19,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:43:19,290 INFO L168 Benchmark]: Toolchain (without parser) took 5155.95 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 54.7 MB in the end (delta: 71.5 MB). Peak memory consumption was 72.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:19,291 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 122.9 MB in the beginning and 122.8 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:43:19,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.52 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 116.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:19,293 INFO L168 Benchmark]: Boogie Preprocessor took 33.35 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 115.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:19,294 INFO L168 Benchmark]: RCFGBuilder took 516.53 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 101.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:19,294 INFO L168 Benchmark]: TraceAbstraction took 4309.74 ms. Allocated memory is still 151.0 MB. Free memory was 101.4 MB in the beginning and 54.7 MB in the end (delta: 46.7 MB). Peak memory consumption was 47.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:19,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 122.9 MB in the beginning and 122.8 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 276.52 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 116.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.35 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 115.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 516.53 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 101.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4309.74 ms. Allocated memory is still 151.0 MB. Free memory was 101.4 MB in the beginning and 54.7 MB in the end (delta: 46.7 MB). Peak memory consumption was 47.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 2 * x <= sn && sn <= 2 * x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 28 SDslu, 47 SDs, 0 SdLazy, 97 SolverSat, 30 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 23 NumberOfFragments, 56 HoareAnnotationTreeSize, 16 FomulaSimplifications, 285 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 355 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 4056 SizeOfPredicates, 2 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...