/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/terminator_02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:43:18,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:43:18,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:43:18,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:43:18,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:43:18,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:43:18,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:43:18,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:43:18,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:43:18,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:43:18,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:43:18,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:43:18,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:43:18,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:43:18,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:43:18,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:43:18,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:43:18,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:43:18,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:43:18,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:43:18,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:43:18,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:43:18,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:43:18,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:43:18,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:43:18,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:43:18,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:43:18,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:43:18,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:43:18,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:43:18,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:43:18,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:43:18,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:43:18,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:43:18,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:43:18,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:43:18,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:43:18,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:43:18,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:43:18,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:43:18,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:43:18,765 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:43:18,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:43:18,766 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:43:18,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:43:18,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:43:18,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:43:18,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:43:18,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:43:18,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:43:18,767 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:43:18,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:43:18,768 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:43:18,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:43:18,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:43:18,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:43:18,768 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:43:18,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:43:18,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:43:18,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:43:18,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:43:18,769 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:43:18,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:43:18,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:43:18,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:43:18,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:43:18,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:43:19,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:43:19,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:43:19,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:43:19,291 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:43:19,292 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:43:19,293 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-1.c [2020-09-04 13:43:19,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37b05b5c8/d13cfcaddd1f4d968575d9695766821a/FLAG637f94ba3 [2020-09-04 13:43:19,890 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:43:19,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/terminator_02-1.c [2020-09-04 13:43:19,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37b05b5c8/d13cfcaddd1f4d968575d9695766821a/FLAG637f94ba3 [2020-09-04 13:43:20,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37b05b5c8/d13cfcaddd1f4d968575d9695766821a [2020-09-04 13:43:20,243 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:43:20,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:43:20,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:43:20,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:43:20,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:43:20,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:43:20" (1/1) ... [2020-09-04 13:43:20,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:20, skipping insertion in model container [2020-09-04 13:43:20,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:43:20" (1/1) ... [2020-09-04 13:43:20,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:43:20,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:43:20,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:43:20,555 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:43:20,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:43:20,592 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:43:20,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:20 WrapperNode [2020-09-04 13:43:20,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:43:20,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:43:20,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:43:20,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:43:20,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:20" (1/1) ... [2020-09-04 13:43:20,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:20" (1/1) ... [2020-09-04 13:43:20,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:20" (1/1) ... [2020-09-04 13:43:20,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:20" (1/1) ... [2020-09-04 13:43:20,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:20" (1/1) ... [2020-09-04 13:43:20,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:20" (1/1) ... [2020-09-04 13:43:20,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:20" (1/1) ... [2020-09-04 13:43:20,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:43:20,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:43:20,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:43:20,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:43:20,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:43:20,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:43:20,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:43:20,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:43:20,800 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:43:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:43:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:43:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:43:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-04 13:43:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:43:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:43:20,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:43:21,026 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:43:21,027 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 13:43:21,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:43:21 BoogieIcfgContainer [2020-09-04 13:43:21,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:43:21,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:43:21,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:43:21,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:43:21,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:43:20" (1/3) ... [2020-09-04 13:43:21,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76afa7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:43:21, skipping insertion in model container [2020-09-04 13:43:21,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:43:20" (2/3) ... [2020-09-04 13:43:21,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76afa7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:43:21, skipping insertion in model container [2020-09-04 13:43:21,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:43:21" (3/3) ... [2020-09-04 13:43:21,041 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2020-09-04 13:43:21,052 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:43:21,062 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:43:21,084 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:43:21,114 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:43:21,114 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:43:21,114 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:43:21,114 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:43:21,115 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:43:21,115 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:43:21,115 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:43:21,115 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:43:21,135 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-09-04 13:43:21,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-04 13:43:21,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:21,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:21,143 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:21,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:21,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2020-09-04 13:43:21,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:21,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778686672] [2020-09-04 13:43:21,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:21,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:43:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:43:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:43:21,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778686672] [2020-09-04 13:43:21,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:43:21,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 13:43:21,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83826038] [2020-09-04 13:43:21,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 13:43:21,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:43:21,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 13:43:21,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 13:43:21,322 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-09-04 13:43:21,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:43:21,350 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-09-04 13:43:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 13:43:21,352 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-04 13:43:21,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:43:21,362 INFO L225 Difference]: With dead ends: 31 [2020-09-04 13:43:21,362 INFO L226 Difference]: Without dead ends: 12 [2020-09-04 13:43:21,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 13:43:21,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-09-04 13:43:21,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-09-04 13:43:21,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-09-04 13:43:21,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-09-04 13:43:21,413 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2020-09-04 13:43:21,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:43:21,414 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-09-04 13:43:21,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 13:43:21,414 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-09-04 13:43:21,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-04 13:43:21,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:43:21,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:43:21,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:43:21,416 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:43:21,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:43:21,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1703094711, now seen corresponding path program 1 times [2020-09-04 13:43:21,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:43:21,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197439729] [2020-09-04 13:43:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:43:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:43:21,437 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:43:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:43:21,449 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:43:21,472 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:43:21,472 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:43:21,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:43:21,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:43:21 BoogieIcfgContainer [2020-09-04 13:43:21,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:43:21,500 INFO L168 Benchmark]: Toolchain (without parser) took 1254.13 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 102.1 MB in the beginning and 144.9 MB in the end (delta: -42.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:21,501 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-04 13:43:21,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.79 ms. Allocated memory is still 138.4 MB. Free memory was 101.9 MB in the beginning and 92.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:21,504 INFO L168 Benchmark]: Boogie Preprocessor took 115.75 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 92.3 MB in the beginning and 179.8 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:21,505 INFO L168 Benchmark]: RCFGBuilder took 321.59 ms. Allocated memory is still 200.8 MB. Free memory was 179.8 MB in the beginning and 166.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:21,505 INFO L168 Benchmark]: TraceAbstraction took 463.84 ms. Allocated memory is still 200.8 MB. Free memory was 166.3 MB in the beginning and 144.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:43:21,510 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 346.79 ms. Allocated memory is still 138.4 MB. Free memory was 101.9 MB in the beginning and 92.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.75 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 92.3 MB in the beginning and 179.8 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 321.59 ms. Allocated memory is still 200.8 MB. Free memory was 179.8 MB in the beginning and 166.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 463.84 ms. Allocated memory is still 200.8 MB. Free memory was 166.3 MB in the beginning and 144.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 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