/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/terminator_02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:40:01,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:40:01,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:40:01,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:40:01,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:40:01,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:40:01,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:40:01,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:40:01,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:40:01,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:40:01,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:40:01,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:40:01,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:40:01,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:40:01,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:40:01,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:40:01,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:40:01,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:40:01,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:40:01,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:40:01,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:40:01,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:40:01,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:40:01,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:40:01,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 11:40:01,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:40:01,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:40:01,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:40:01,247 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 [2020-07-21 11:40:01,263 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:40:01,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:40:01,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:40:01,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:40:01,266 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:40:01,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:40:01,266 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:40:01,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:40:01,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:40:01,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:40:01,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:40:01,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:40:01,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:40:01,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:40:01,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:40:01,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:40:01,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:40:01,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:40:01,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:40:01,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:40:01,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:40:01,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:40:01,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:40:01,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:40:01,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:40:01,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:40:01,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:40:01,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:40:01,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:40:01,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 11:40:01,598 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:40:01,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:40:01,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:40:01,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:40:01,627 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:40:01,629 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-1.c [2020-07-21 11:40:01,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed253bab6/52330c2f76c94f8b8a308addc397874e/FLAGeec15d0e4 [2020-07-21 11:40:02,247 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:40:02,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-1.c [2020-07-21 11:40:02,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed253bab6/52330c2f76c94f8b8a308addc397874e/FLAGeec15d0e4 [2020-07-21 11:40:02,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed253bab6/52330c2f76c94f8b8a308addc397874e [2020-07-21 11:40:02,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:40:02,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:40:02,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:40:02,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:40:02,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:40:02,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:40:02" (1/1) ... [2020-07-21 11:40:02,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9bb858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:40:02, skipping insertion in model container [2020-07-21 11:40:02,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:40:02" (1/1) ... [2020-07-21 11:40:02,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:40:02,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:40:02,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:40:02,857 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:40:02,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:40:02,888 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:40:02,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:40:02 WrapperNode [2020-07-21 11:40:02,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:40:02,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:40:02,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:40:02,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:40:02,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:40:02" (1/1) ... [2020-07-21 11:40:02,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:40:02" (1/1) ... [2020-07-21 11:40:02,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:40:02" (1/1) ... [2020-07-21 11:40:02,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:40:02" (1/1) ... [2020-07-21 11:40:02,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:40:02" (1/1) ... [2020-07-21 11:40:02,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:40:02" (1/1) ... [2020-07-21 11:40:02,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:40:02" (1/1) ... [2020-07-21 11:40:03,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:40:03,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:40:03,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:40:03,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:40:03,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:40:02" (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 [2020-07-21 11:40:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:40:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:40:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 11:40:03,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:40:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:40:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 11:40:03,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:40:03,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-21 11:40:03,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:40:03,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:40:03,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:40:03,322 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:40:03,322 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 11:40:03,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:40:03 BoogieIcfgContainer [2020-07-21 11:40:03,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:40:03,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:40:03,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:40:03,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:40:03,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:40:02" (1/3) ... [2020-07-21 11:40:03,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e0e094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:40:03, skipping insertion in model container [2020-07-21 11:40:03,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:40:02" (2/3) ... [2020-07-21 11:40:03,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23e0e094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:40:03, skipping insertion in model container [2020-07-21 11:40:03,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:40:03" (3/3) ... [2020-07-21 11:40:03,341 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2020-07-21 11:40:03,355 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:40:03,365 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:40:03,387 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:40:03,427 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:40:03,428 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:40:03,428 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:40:03,429 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:40:03,429 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:40:03,429 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:40:03,429 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:40:03,430 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:40:03,491 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-21 11:40:03,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 11:40:03,510 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:40:03,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:40:03,516 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:40:03,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:40:03,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2020-07-21 11:40:03,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:40:03,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771354168] [2020-07-21 11:40:03,552 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:40:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:40:03,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 11:40:03,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:40:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:40:03,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:40:03,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771354168] [2020-07-21 11:40:03,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:40:03,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 11:40:03,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932606363] [2020-07-21 11:40:03,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 11:40:03,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:40:03,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 11:40:03,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:40:03,663 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-21 11:40:03,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:40:03,693 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-21 11:40:03,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 11:40:03,695 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-21 11:40:03,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:40:03,704 INFO L225 Difference]: With dead ends: 31 [2020-07-21 11:40:03,705 INFO L226 Difference]: Without dead ends: 12 [2020-07-21 11:40:03,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:40:03,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-21 11:40:03,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-21 11:40:03,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-21 11:40:03,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-07-21 11:40:03,752 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2020-07-21 11:40:03,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:40:03,752 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-07-21 11:40:03,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 11:40:03,753 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-07-21 11:40:03,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 11:40:03,753 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:40:03,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:40:03,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:40:03,969 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:40:03,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:40:03,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1703094711, now seen corresponding path program 1 times [2020-07-21 11:40:03,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:40:03,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335599395] [2020-07-21 11:40:03,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:40:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 11:40:04,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 11:40:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 11:40:04,030 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 11:40:04,045 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 11:40:04,045 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 11:40:04,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:40:04,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:40:04 BoogieIcfgContainer [2020-07-21 11:40:04,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:40:04,311 INFO L168 Benchmark]: Toolchain (without parser) took 1734.48 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 100.6 MB in the beginning and 142.9 MB in the end (delta: -42.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-07-21 11:40:04,315 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 11:40:04,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.03 ms. Allocated memory is still 137.4 MB. Free memory was 100.2 MB in the beginning and 90.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-21 11:40:04,321 INFO L168 Benchmark]: Boogie Preprocessor took 120.95 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 90.6 MB in the beginning and 182.5 MB in the end (delta: -91.8 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:40:04,323 INFO L168 Benchmark]: RCFGBuilder took 317.48 ms. Allocated memory is still 202.4 MB. Free memory was 182.1 MB in the beginning and 169.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:40:04,327 INFO L168 Benchmark]: TraceAbstraction took 976.78 ms. Allocated memory is still 202.4 MB. Free memory was 168.5 MB in the beginning and 142.9 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:40:04,342 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 312.03 ms. Allocated memory is still 137.4 MB. Free memory was 100.2 MB in the beginning and 90.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.95 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 90.6 MB in the beginning and 182.5 MB in the end (delta: -91.8 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 317.48 ms. Allocated memory is still 202.4 MB. Free memory was 182.1 MB in the beginning and 169.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 976.78 ms. Allocated memory is still 202.4 MB. Free memory was 168.5 MB in the beginning and 142.9 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int x=__VERIFIER_nondet_int(); [L15] int y=__VERIFIER_nondet_int(); [L16] int z=__VERIFIER_nondet_int(); [L18] COND FALSE !(x<100 && 100