/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 05:28:42,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 05:28:42,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 05:28:43,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 05:28:43,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 05:28:43,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 05:28:43,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 05:28:43,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 05:28:43,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 05:28:43,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 05:28:43,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 05:28:43,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 05:28:43,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 05:28:43,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 05:28:43,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 05:28:43,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 05:28:43,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 05:28:43,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 05:28:43,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 05:28:43,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 05:28:43,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 05:28:43,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 05:28:43,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 05:28:43,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 05:28:43,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 05:28:43,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 05:28:43,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 05:28:43,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 05:28:43,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 05:28:43,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 05:28:43,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 05:28:43,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 05:28:43,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 05:28:43,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 05:28:43,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 05:28:43,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 05:28:43,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 05:28:43,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 05:28:43,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 05:28:43,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 05:28:43,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 05:28:43,089 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 [2020-10-13 05:28:43,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 05:28:43,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 05:28:43,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 05:28:43,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 05:28:43,136 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 05:28:43,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 05:28:43,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 05:28:43,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 05:28:43,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 05:28:43,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 05:28:43,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 05:28:43,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 05:28:43,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 05:28:43,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 05:28:43,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 05:28:43,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 05:28:43,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 05:28:43,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 05:28:43,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 05:28:43,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 05:28:43,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 05:28:43,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 05:28:43,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 05:28:43,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 05:28:43,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 05:28:43,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 05:28:43,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 05:28:43,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 05:28:43,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 05:28:43,142 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.rcfgbuilder: Size of a code block -> SequenceOfStatements 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 05:28:43,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 05:28:43,470 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 05:28:43,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 05:28:43,474 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 05:28:43,475 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 05:28:43,475 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-10-13 05:28:43,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed20e6fba/829d82fd5c974026887840378fd90a38/FLAG8181d0b0a [2020-10-13 05:28:43,959 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 05:28:43,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-10-13 05:28:43,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed20e6fba/829d82fd5c974026887840378fd90a38/FLAG8181d0b0a [2020-10-13 05:28:44,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed20e6fba/829d82fd5c974026887840378fd90a38 [2020-10-13 05:28:44,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 05:28:44,358 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 05:28:44,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 05:28:44,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 05:28:44,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 05:28:44,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:28:44" (1/1) ... [2020-10-13 05:28:44,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c11530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:44, skipping insertion in model container [2020-10-13 05:28:44,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:28:44" (1/1) ... [2020-10-13 05:28:44,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 05:28:44,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 05:28:44,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:28:44,574 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 05:28:44,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 05:28:44,611 INFO L208 MainTranslator]: Completed translation [2020-10-13 05:28:44,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:44 WrapperNode [2020-10-13 05:28:44,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 05:28:44,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 05:28:44,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 05:28:44,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 05:28:44,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:44" (1/1) ... [2020-10-13 05:28:44,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:44" (1/1) ... [2020-10-13 05:28:44,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:44" (1/1) ... [2020-10-13 05:28:44,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:44" (1/1) ... [2020-10-13 05:28:44,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:44" (1/1) ... [2020-10-13 05:28:44,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:44" (1/1) ... [2020-10-13 05:28:44,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:44" (1/1) ... [2020-10-13 05:28:44,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 05:28:44,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 05:28:44,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 05:28:44,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 05:28:44,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:44" (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 [2020-10-13 05:28:44,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 05:28:44,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 05:28:44,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 05:28:44,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 05:28:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 05:28:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-13 05:28:44,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 05:28:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 05:28:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 05:28:44,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 05:28:45,038 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 05:28:45,039 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 05:28:45,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:28:45 BoogieIcfgContainer [2020-10-13 05:28:45,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 05:28:45,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 05:28:45,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 05:28:45,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 05:28:45,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:28:44" (1/3) ... [2020-10-13 05:28:45,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a67a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:28:45, skipping insertion in model container [2020-10-13 05:28:45,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:28:44" (2/3) ... [2020-10-13 05:28:45,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a67a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:28:45, skipping insertion in model container [2020-10-13 05:28:45,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:28:45" (3/3) ... [2020-10-13 05:28:45,051 INFO L109 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2020-10-13 05:28:45,061 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 05:28:45,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 05:28:45,082 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 05:28:45,105 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 05:28:45,105 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 05:28:45,105 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 05:28:45,106 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 05:28:45,106 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 05:28:45,106 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 05:28:45,106 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 05:28:45,106 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 05:28:45,123 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-13 05:28:45,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 05:28:45,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:45,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:45,133 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:45,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:45,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1906239810, now seen corresponding path program 1 times [2020-10-13 05:28:45,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:45,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835066513] [2020-10-13 05:28:45,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:45,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:45,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 05:28:45,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:45,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 05:28:45,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:45,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:45,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 05:28:45,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:45,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:45,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:45,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:45,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:45,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:45,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 05:28:45,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:28:45,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835066513] [2020-10-13 05:28:45,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:45,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-13 05:28:45,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825865155] [2020-10-13 05:28:45,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-13 05:28:45,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:45,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-13 05:28:45,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-13 05:28:45,349 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-10-13 05:28:45,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:45,372 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2020-10-13 05:28:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-13 05:28:45,373 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-13 05:28:45,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:45,381 INFO L225 Difference]: With dead ends: 38 [2020-10-13 05:28:45,381 INFO L226 Difference]: Without dead ends: 21 [2020-10-13 05:28:45,388 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 [2020-10-13 05:28:45,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-13 05:28:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-13 05:28:45,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-13 05:28:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2020-10-13 05:28:45,424 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 10 [2020-10-13 05:28:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:45,424 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2020-10-13 05:28:45,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-13 05:28:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2020-10-13 05:28:45,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 05:28:45,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:45,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:45,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 05:28:45,426 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:45,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:45,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1847134466, now seen corresponding path program 1 times [2020-10-13 05:28:45,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:45,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376888260] [2020-10-13 05:28:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:45,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:45,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 05:28:45,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:45,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-13 05:28:45,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:45,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:28:45,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 05:28:45,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:45,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:45,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:45,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:45,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:45,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:28:45,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376888260] [2020-10-13 05:28:45,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:45,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 05:28:45,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786338504] [2020-10-13 05:28:45,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 05:28:45,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:45,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 05:28:45,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:28:45,692 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand 3 states. [2020-10-13 05:28:45,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:45,776 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-10-13 05:28:45,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 05:28:45,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-13 05:28:45,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:45,781 INFO L225 Difference]: With dead ends: 28 [2020-10-13 05:28:45,782 INFO L226 Difference]: Without dead ends: 23 [2020-10-13 05:28:45,784 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 [2020-10-13 05:28:45,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-13 05:28:45,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-13 05:28:45,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-13 05:28:45,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2020-10-13 05:28:45,793 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 10 [2020-10-13 05:28:45,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:45,793 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2020-10-13 05:28:45,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 05:28:45,793 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2020-10-13 05:28:45,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 05:28:45,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:45,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:45,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 05:28:45,796 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:45,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:45,796 INFO L82 PathProgramCache]: Analyzing trace with hash -129940435, now seen corresponding path program 1 times [2020-10-13 05:28:45,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:45,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028023613] [2020-10-13 05:28:45,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:45,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:46,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 05:28:46,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:46,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-10-13 05:28:46,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:46,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:46,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 05:28:46,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 05:28:46,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:46,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:46,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:46,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:46,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:46,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:46,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:46,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:46,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:46,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:28:46,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028023613] [2020-10-13 05:28:46,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:46,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 05:28:46,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79510288] [2020-10-13 05:28:46,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 05:28:46,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:46,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 05:28:46,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:28:46,639 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand 3 states. [2020-10-13 05:28:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:46,740 INFO L93 Difference]: Finished difference Result 50 states and 81 transitions. [2020-10-13 05:28:46,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 05:28:46,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-13 05:28:46,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:46,743 INFO L225 Difference]: With dead ends: 50 [2020-10-13 05:28:46,743 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 05:28:46,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:28:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 05:28:46,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 05:28:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 05:28:46,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2020-10-13 05:28:46,752 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 21 [2020-10-13 05:28:46,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:46,752 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2020-10-13 05:28:46,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 05:28:46,752 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2020-10-13 05:28:46,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 05:28:46,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:46,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:46,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 05:28:46,754 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:46,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:46,754 INFO L82 PathProgramCache]: Analyzing trace with hash 263086575, now seen corresponding path program 1 times [2020-10-13 05:28:46,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:46,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465421191] [2020-10-13 05:28:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:46,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:47,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 05:28:47,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:47,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-13 05:28:47,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:47,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 05:28:47,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 05:28:47,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 05:28:47,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 05:28:47,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:47,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:47,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:47,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 05:28:47,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:28:47,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465421191] [2020-10-13 05:28:47,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 05:28:47,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 05:28:47,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372840395] [2020-10-13 05:28:47,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 05:28:47,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:47,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 05:28:47,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:28:47,331 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 13 states. [2020-10-13 05:28:47,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:47,545 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2020-10-13 05:28:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 05:28:47,546 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2020-10-13 05:28:47,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:47,548 INFO L225 Difference]: With dead ends: 51 [2020-10-13 05:28:47,548 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 05:28:47,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-13 05:28:47,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 05:28:47,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-13 05:28:47,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 05:28:47,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2020-10-13 05:28:47,562 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 21 [2020-10-13 05:28:47,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:47,562 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2020-10-13 05:28:47,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 05:28:47,562 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2020-10-13 05:28:47,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 05:28:47,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:47,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:47,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 05:28:47,566 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:47,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:47,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1016777103, now seen corresponding path program 1 times [2020-10-13 05:28:47,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:47,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376340348] [2020-10-13 05:28:47,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:47,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:47,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 05:28:47,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 05:28:47,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-13 05:28:47,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:47,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 05:28:47,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 05:28:47,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 05:28:47,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:48,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 05:28:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 05:28:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 05:28:48,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 05:28:48,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 05:28:48,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 05:28:48,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 05:28:48,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 05:28:48,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 05:28:48,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 05:28:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 05:28:48,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 05:28:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 05:28:48,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376340348] [2020-10-13 05:28:48,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 05:28:48,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 05:28:48,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511053614] [2020-10-13 05:28:48,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 05:28:48,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 05:28:48,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 05:28:48,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 05:28:48,022 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand 3 states. [2020-10-13 05:28:48,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 05:28:48,097 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-10-13 05:28:48,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 05:28:48,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-13 05:28:48,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 05:28:48,100 INFO L225 Difference]: With dead ends: 61 [2020-10-13 05:28:48,100 INFO L226 Difference]: Without dead ends: 45 [2020-10-13 05:28:48,101 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 [2020-10-13 05:28:48,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-13 05:28:48,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-13 05:28:48,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 05:28:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-10-13 05:28:48,112 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 21 [2020-10-13 05:28:48,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 05:28:48,113 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-10-13 05:28:48,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 05:28:48,113 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-10-13 05:28:48,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 05:28:48,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 05:28:48,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 05:28:48,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 05:28:48,114 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 05:28:48,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 05:28:48,117 INFO L82 PathProgramCache]: Analyzing trace with hash -345519953, now seen corresponding path program 1 times [2020-10-13 05:28:48,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 05:28:48,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681648489] [2020-10-13 05:28:48,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 05:28:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 05:28:48,135 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 05:28:48,136 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 05:28:48,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 05:28:48,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:28:48 BoogieIcfgContainer [2020-10-13 05:28:48,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 05:28:48,168 INFO L168 Benchmark]: Toolchain (without parser) took 3809.63 ms. Allocated memory was 142.1 MB in the beginning and 241.2 MB in the end (delta: 99.1 MB). Free memory was 103.6 MB in the beginning and 113.4 MB in the end (delta: -9.8 MB). Peak memory consumption was 89.3 MB. Max. memory is 7.1 GB. [2020-10-13 05:28:48,169 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 142.1 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 05:28:48,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.96 ms. Allocated memory is still 142.1 MB. Free memory was 103.4 MB in the beginning and 93.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-13 05:28:48,170 INFO L168 Benchmark]: Boogie Preprocessor took 113.98 ms. Allocated memory was 142.1 MB in the beginning and 202.9 MB in the end (delta: 60.8 MB). Free memory was 93.3 MB in the beginning and 181.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-10-13 05:28:48,171 INFO L168 Benchmark]: RCFGBuilder took 316.48 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 165.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2020-10-13 05:28:48,172 INFO L168 Benchmark]: TraceAbstraction took 3121.16 ms. Allocated memory was 202.9 MB in the beginning and 241.2 MB in the end (delta: 38.3 MB). Free memory was 164.7 MB in the beginning and 113.4 MB in the end (delta: 51.3 MB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. [2020-10-13 05:28:48,176 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 142.1 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.96 ms. Allocated memory is still 142.1 MB. Free memory was 103.4 MB in the beginning and 93.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.98 ms. Allocated memory was 142.1 MB in the beginning and 202.9 MB in the end (delta: 60.8 MB). Free memory was 93.3 MB in the beginning and 181.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 316.48 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 165.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3121.16 ms. Allocated memory was 202.9 MB in the beginning and 241.2 MB in the end (delta: 38.3 MB). Free memory was 164.7 MB in the beginning and 113.4 MB in the end (delta: 51.3 MB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = 0; [L13] unsigned int y = __VERIFIER_nondet_uint(); [L15] COND TRUE x < 99 [L16] COND FALSE !(y % 2 == 0) [L17] x += 2 [L19] COND FALSE !(y % 2 == 0) [L20] x -= 2 [L22] COND FALSE !(y % 2 == 0) [L23] x += 2 [L25] COND FALSE !(y % 2 == 0) [L26] x -= 2 [L28] COND FALSE !(y % 2 == 0) [L29] x += 2 [L31] COND FALSE !(y % 2 == 0) [L32] x -= 4 [L34] COND FALSE !(y % 2 == 0) [L35] x += 4 [L37] COND FALSE !(y % 2 == 0) [L38] x += 2 [L40] COND FALSE !(y % 2 == 0) [L41] x -= 4 [L43] COND FALSE !(y % 2 == 0) [L44] x -= 4 [L15] COND FALSE !(x < 99) [L47] CALL __VERIFIER_assert((x % 2) == (y % 2)) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 129 SDtfs, 24 SDslu, 52 SDs, 0 SdLazy, 244 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 3416 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...