/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/for_bounded_loop1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:06:22,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:06:22,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:06:22,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:06:22,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:06:22,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:06:22,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:06:22,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:06:22,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:06:22,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:06:22,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:06:22,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:06:22,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:06:22,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:06:22,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:06:22,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:06:22,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:06:22,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:06:22,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:06:22,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:06:22,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:06:22,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:06:22,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:06:22,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:06:22,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:06:22,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:06:22,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:06:22,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:06:22,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:06:22,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:06:22,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:06:22,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:06:22,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:06:22,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:06:22,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:06:22,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:06:22,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:06:22,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:06:22,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:06:22,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:06:22,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:06:22,567 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 [2020-08-21 23:06:22,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:06:22,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:06:22,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:06:22,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:06:22,617 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:06:22,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:06:22,618 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:06:22,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:06:22,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:06:22,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:06:22,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:06:22,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:06:22,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:06:22,619 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:06:22,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:06:22,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:06:22,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:06:22,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:06:22,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:06:22,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:06:22,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:06:22,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:06:22,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:06:22,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:06:22,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:06:22,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:06:22,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:06:22,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:06:22,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:06:22,624 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 23:06:22,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:06:22,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:06:22,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:06:22,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:06:22,985 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:06:22,986 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-08-21 23:06:23,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3cee8e23/23f57cc14f5d4203b577c61603b3da8d/FLAG54267799b [2020-08-21 23:06:23,545 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:06:23,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/for_bounded_loop1.c [2020-08-21 23:06:23,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3cee8e23/23f57cc14f5d4203b577c61603b3da8d/FLAG54267799b [2020-08-21 23:06:23,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3cee8e23/23f57cc14f5d4203b577c61603b3da8d [2020-08-21 23:06:23,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:06:23,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:06:23,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:06:23,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:06:23,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:06:23,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:06:23" (1/1) ... [2020-08-21 23:06:23,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c77fbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:23, skipping insertion in model container [2020-08-21 23:06:23,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:06:23" (1/1) ... [2020-08-21 23:06:23,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:06:23,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:06:24,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:06:24,126 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:06:24,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:06:24,160 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:06:24,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:24 WrapperNode [2020-08-21 23:06:24,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:06:24,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:06:24,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:06:24,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:06:24,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:24" (1/1) ... [2020-08-21 23:06:24,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:24" (1/1) ... [2020-08-21 23:06:24,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:24" (1/1) ... [2020-08-21 23:06:24,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:24" (1/1) ... [2020-08-21 23:06:24,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:24" (1/1) ... [2020-08-21 23:06:24,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:24" (1/1) ... [2020-08-21 23:06:24,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:24" (1/1) ... [2020-08-21 23:06:24,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:06:24,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:06:24,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:06:24,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:06:24,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:24" (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 [2020-08-21 23:06:24,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:06:24,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:06:24,347 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 23:06:24,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 23:06:24,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:06:24,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:06:24,348 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 23:06:24,348 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 23:06:24,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 23:06:24,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:06:24,349 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:06:24,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:06:24,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:06:24,639 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:06:24,639 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 23:06:24,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:06:24 BoogieIcfgContainer [2020-08-21 23:06:24,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:06:24,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:06:24,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:06:24,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:06:24,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:06:23" (1/3) ... [2020-08-21 23:06:24,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac571bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:06:24, skipping insertion in model container [2020-08-21 23:06:24,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:06:24" (2/3) ... [2020-08-21 23:06:24,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac571bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:06:24, skipping insertion in model container [2020-08-21 23:06:24,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:06:24" (3/3) ... [2020-08-21 23:06:24,664 INFO L109 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1.c [2020-08-21 23:06:24,675 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:06:24,683 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:06:24,698 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:06:24,722 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:06:24,722 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:06:24,722 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:06:24,722 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:06:24,723 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:06:24,723 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:06:24,723 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:06:24,723 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:06:24,744 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-21 23:06:24,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 23:06:24,751 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:06:24,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:06:24,752 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:06:24,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:06:24,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1474053726, now seen corresponding path program 1 times [2020-08-21 23:06:24,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:06:24,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034313989] [2020-08-21 23:06:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:06:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:24,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:06:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:24,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:06:24,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034313989] [2020-08-21 23:06:24,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:06:24,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-21 23:06:24,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003378252] [2020-08-21 23:06:24,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-21 23:06:24,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:06:24,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-21 23:06:24,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-21 23:06:24,934 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-08-21 23:06:24,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:06:24,961 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2020-08-21 23:06:24,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-21 23:06:24,963 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-08-21 23:06:24,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:06:24,973 INFO L225 Difference]: With dead ends: 40 [2020-08-21 23:06:24,973 INFO L226 Difference]: Without dead ends: 19 [2020-08-21 23:06:24,977 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 [2020-08-21 23:06:24,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-21 23:06:25,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-08-21 23:06:25,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-21 23:06:25,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-08-21 23:06:25,022 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2020-08-21 23:06:25,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:06:25,023 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-08-21 23:06:25,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-21 23:06:25,023 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-08-21 23:06:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 23:06:25,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:06:25,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:06:25,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:06:25,025 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:06:25,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:06:25,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1462047953, now seen corresponding path program 1 times [2020-08-21 23:06:25,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:06:25,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872392035] [2020-08-21 23:06:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:06:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:25,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:06:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:06:25,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872392035] [2020-08-21 23:06:25,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:06:25,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:06:25,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727986870] [2020-08-21 23:06:25,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:06:25,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:06:25,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:06:25,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:06:25,096 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2020-08-21 23:06:25,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:06:25,122 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-08-21 23:06:25,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:06:25,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-08-21 23:06:25,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:06:25,124 INFO L225 Difference]: With dead ends: 27 [2020-08-21 23:06:25,124 INFO L226 Difference]: Without dead ends: 20 [2020-08-21 23:06:25,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:06:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-08-21 23:06:25,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-08-21 23:06:25,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-08-21 23:06:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-08-21 23:06:25,133 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2020-08-21 23:06:25,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:06:25,133 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-08-21 23:06:25,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:06:25,134 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-08-21 23:06:25,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 23:06:25,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:06:25,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:06:25,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:06:25,135 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:06:25,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:06:25,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1463775831, now seen corresponding path program 1 times [2020-08-21 23:06:25,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:06:25,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644703827] [2020-08-21 23:06:25,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:06:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:25,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:06:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:06:25,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644703827] [2020-08-21 23:06:25,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:06:25,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:06:25,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126074859] [2020-08-21 23:06:25,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:06:25,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:06:25,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:06:25,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:06:25,272 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2020-08-21 23:06:25,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:06:25,369 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-08-21 23:06:25,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 23:06:25,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-08-21 23:06:25,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:06:25,372 INFO L225 Difference]: With dead ends: 28 [2020-08-21 23:06:25,372 INFO L226 Difference]: Without dead ends: 26 [2020-08-21 23:06:25,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:06:25,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-21 23:06:25,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-08-21 23:06:25,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-21 23:06:25,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-08-21 23:06:25,384 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2020-08-21 23:06:25,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:06:25,385 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-08-21 23:06:25,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:06:25,385 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-08-21 23:06:25,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 23:06:25,386 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:06:25,386 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:06:25,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:06:25,387 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:06:25,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:06:25,387 INFO L82 PathProgramCache]: Analyzing trace with hash -541842987, now seen corresponding path program 1 times [2020-08-21 23:06:25,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:06:25,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911252232] [2020-08-21 23:06:25,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:06:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:25,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:06:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:25,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:06:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:06:25,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:06:25,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911252232] [2020-08-21 23:06:25,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:06:25,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 23:06:25,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639645658] [2020-08-21 23:06:25,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 23:06:25,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:06:25,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 23:06:25,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:06:25,520 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states. [2020-08-21 23:06:25,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:06:25,619 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-08-21 23:06:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 23:06:25,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-21 23:06:25,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:06:25,621 INFO L225 Difference]: With dead ends: 32 [2020-08-21 23:06:25,622 INFO L226 Difference]: Without dead ends: 28 [2020-08-21 23:06:25,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 23:06:25,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-21 23:06:25,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-08-21 23:06:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-21 23:06:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-08-21 23:06:25,630 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 18 [2020-08-21 23:06:25,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:06:25,631 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-08-21 23:06:25,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 23:06:25,631 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-08-21 23:06:25,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 23:06:25,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:06:25,632 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:06:25,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:06:25,633 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:06:25,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:06:25,633 INFO L82 PathProgramCache]: Analyzing trace with hash 814692392, now seen corresponding path program 1 times [2020-08-21 23:06:25,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:06:25,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414944314] [2020-08-21 23:06:25,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:06:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 23:06:25,652 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 23:06:25,652 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:06:25,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:06:25,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:06:25 BoogieIcfgContainer [2020-08-21 23:06:25,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:06:25,675 INFO L168 Benchmark]: Toolchain (without parser) took 1754.51 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 101.7 MB in the beginning and 96.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 66.7 MB. Max. memory is 7.1 GB. [2020-08-21 23:06:25,676 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 23:06:25,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.67 ms. Allocated memory is still 138.4 MB. Free memory was 101.5 MB in the beginning and 92.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-21 23:06:25,678 INFO L168 Benchmark]: Boogie Preprocessor took 111.49 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 91.8 MB in the beginning and 179.7 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-21 23:06:25,679 INFO L168 Benchmark]: RCFGBuilder took 372.39 ms. Allocated memory is still 199.8 MB. Free memory was 179.7 MB in the beginning and 165.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-08-21 23:06:25,680 INFO L168 Benchmark]: TraceAbstraction took 1015.99 ms. Allocated memory is still 199.8 MB. Free memory was 164.5 MB in the beginning and 96.3 MB in the end (delta: 68.1 MB). Peak memory consumption was 68.1 MB. Max. memory is 7.1 GB. [2020-08-21 23:06:25,684 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 138.4 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 240.67 ms. Allocated memory is still 138.4 MB. Free memory was 101.5 MB in the beginning and 92.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.49 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 91.8 MB in the beginning and 179.7 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 372.39 ms. Allocated memory is still 199.8 MB. Free memory was 179.7 MB in the beginning and 165.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1015.99 ms. Allocated memory is still 199.8 MB. Free memory was 164.5 MB in the beginning and 96.3 MB in the end (delta: 68.1 MB). Peak memory consumption was 68.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int i=0, x=0, y=0; [L18] int n=__VERIFIER_nondet_int(); [L19] COND FALSE !(!(n>0)) [L20] i=0 [L20] COND TRUE i