/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/terminator_02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:05:05,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:05:05,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:05:05,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:05:05,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:05:05,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:05:05,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:05:05,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:05:05,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:05:05,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:05:05,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:05:05,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:05:05,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:05:05,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:05:05,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:05:05,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:05:05,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:05:05,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:05:05,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:05:05,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:05:05,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:05:05,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:05:05,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:05:05,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:05:05,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 02:05:05,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:05:05,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:05:05,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:05:05,574 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 [2020-08-19 02:05:05,596 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:05:05,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:05:05,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:05:05,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:05:05,598 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:05:05,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:05:05,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:05:05,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:05:05,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:05:05,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:05:05,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:05:05,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:05:05,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:05:05,600 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:05:05,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:05:05,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:05:05,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:05:05,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:05:05,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:05:05,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:05:05,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:05:05,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:05:05,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:05:05,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:05:05,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:05:05,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:05:05,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:05:05,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:05:05,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:05:05,603 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 02:05:05,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:05:05,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:05:05,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:05:05,927 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:05:05,928 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:05:05,929 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-1.c [2020-08-19 02:05:05,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10bd9907e/f5e31f26ddfc48e1b11871f71c736768/FLAGa2d77de9f [2020-08-19 02:05:06,477 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:05:06,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/terminator_02-1.c [2020-08-19 02:05:06,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10bd9907e/f5e31f26ddfc48e1b11871f71c736768/FLAGa2d77de9f [2020-08-19 02:05:06,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10bd9907e/f5e31f26ddfc48e1b11871f71c736768 [2020-08-19 02:05:06,818 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:05:06,819 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:05:06,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:05:06,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:05:06,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:05:06,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:05:06" (1/1) ... [2020-08-19 02:05:06,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:06, skipping insertion in model container [2020-08-19 02:05:06,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:05:06" (1/1) ... [2020-08-19 02:05:06,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:05:06,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:05:07,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:05:07,049 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:05:07,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:05:07,074 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:05:07,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:07 WrapperNode [2020-08-19 02:05:07,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:05:07,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:05:07,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:05:07,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:05:07,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:07" (1/1) ... [2020-08-19 02:05:07,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:07" (1/1) ... [2020-08-19 02:05:07,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:07" (1/1) ... [2020-08-19 02:05:07,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:07" (1/1) ... [2020-08-19 02:05:07,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:07" (1/1) ... [2020-08-19 02:05:07,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:07" (1/1) ... [2020-08-19 02:05:07,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:07" (1/1) ... [2020-08-19 02:05:07,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:05:07,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:05:07,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:05:07,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:05:07,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:07" (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 [2020-08-19 02:05:07,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:05:07,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:05:07,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 02:05:07,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:05:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:05:07,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 02:05:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:05:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-19 02:05:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:05:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:05:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:05:07,443 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:05:07,443 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 02:05:07,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:05:07 BoogieIcfgContainer [2020-08-19 02:05:07,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:05:07,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:05:07,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:05:07,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:05:07,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:05:06" (1/3) ... [2020-08-19 02:05:07,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305f75c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:05:07, skipping insertion in model container [2020-08-19 02:05:07,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:07" (2/3) ... [2020-08-19 02:05:07,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305f75c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:05:07, skipping insertion in model container [2020-08-19 02:05:07,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:05:07" (3/3) ... [2020-08-19 02:05:07,456 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2020-08-19 02:05:07,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:05:07,481 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:05:07,493 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:05:07,517 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:05:07,517 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:05:07,517 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:05:07,517 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:05:07,517 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:05:07,517 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:05:07,518 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:05:07,518 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:05:07,534 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-08-19 02:05:07,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-19 02:05:07,540 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:07,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:07,541 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:07,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:07,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2020-08-19 02:05:07,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:07,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437815739] [2020-08-19 02:05:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:07,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:05:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:05:07,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437815739] [2020-08-19 02:05:07,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:05:07,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-19 02:05:07,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291668757] [2020-08-19 02:05:07,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-19 02:05:07,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:05:07,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-19 02:05:07,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-19 02:05:07,691 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-08-19 02:05:07,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:05:07,709 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-08-19 02:05:07,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-19 02:05:07,711 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-08-19 02:05:07,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:05:07,720 INFO L225 Difference]: With dead ends: 31 [2020-08-19 02:05:07,720 INFO L226 Difference]: Without dead ends: 12 [2020-08-19 02:05:07,725 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 [2020-08-19 02:05:07,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-08-19 02:05:07,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-08-19 02:05:07,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-08-19 02:05:07,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-08-19 02:05:07,763 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2020-08-19 02:05:07,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:05:07,764 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-08-19 02:05:07,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-19 02:05:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-08-19 02:05:07,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-19 02:05:07,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:07,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:07,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:05:07,766 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:07,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:07,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1703094711, now seen corresponding path program 1 times [2020-08-19 02:05:07,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:07,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189820649] [2020-08-19 02:05:07,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:05:07,788 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:05:07,788 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:05:07,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:05:07,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:05:07 BoogieIcfgContainer [2020-08-19 02:05:07,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:05:07,810 INFO L168 Benchmark]: Toolchain (without parser) took 990.65 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 148.4 MB in the end (delta: -46.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:05:07,811 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-19 02:05:07,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.70 ms. Allocated memory is still 140.0 MB. Free memory was 102.1 MB in the beginning and 92.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-19 02:05:07,814 INFO L168 Benchmark]: Boogie Preprocessor took 104.52 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 181.6 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:05:07,815 INFO L168 Benchmark]: RCFGBuilder took 267.31 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 169.7 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:05:07,816 INFO L168 Benchmark]: TraceAbstraction took 359.65 ms. Allocated memory is still 202.9 MB. Free memory was 169.0 MB in the beginning and 148.4 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-08-19 02:05:07,820 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 254.70 ms. Allocated memory is still 140.0 MB. Free memory was 102.1 MB in the beginning and 92.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.52 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 181.6 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 267.31 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 169.7 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 359.65 ms. Allocated memory is still 202.9 MB. Free memory was 169.0 MB in the beginning and 148.4 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 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