/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 SingleStatement --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/multivar_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:10:35,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:10:35,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:10:35,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:10:35,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:10:35,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:10:35,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:10:35,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:10:35,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:10:35,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:10:35,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:10:35,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:10:35,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:10:35,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:10:35,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:10:35,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:10:35,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:10:35,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:10:35,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:10:35,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:10:35,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:10:35,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:10:35,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:10:35,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:10:35,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:10:35,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:10:35,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:10:35,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:10:35,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:10:35,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:10:35,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:10:35,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:10:35,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:10:35,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:10:35,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:10:35,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:10:35,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:10:35,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:10:35,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:10:35,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:10:35,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:10:35,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:10:35,204 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:10:35,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:10:35,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:10:35,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:10:35,208 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:10:35,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:10:35,208 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:10:35,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:10:35,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:10:35,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:10:35,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:10:35,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:10:35,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:10:35,211 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:10:35,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:10:35,212 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:10:35,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:10:35,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:10:35,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:10:35,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:10:35,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:10:35,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:10:35,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:10:35,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:10:35,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:10:35,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:10:35,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:10:35,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:10:35,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:10:35,214 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 -> SingleStatement 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;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:10:35,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:10:35,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:10:35,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:10:35,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:10:35,709 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:10:35,711 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2020-09-24 16:10:35,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f22c673ea/ae8f15952ec74bf2bf78a559c4999bd5/FLAG734834147 [2020-09-24 16:10:36,330 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:10:36,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2020-09-24 16:10:36,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f22c673ea/ae8f15952ec74bf2bf78a559c4999bd5/FLAG734834147 [2020-09-24 16:10:36,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f22c673ea/ae8f15952ec74bf2bf78a559c4999bd5 [2020-09-24 16:10:36,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:10:36,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:10:36,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:10:36,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:10:36,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:10:36,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:10:36" (1/1) ... [2020-09-24 16:10:36,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658c47e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:36, skipping insertion in model container [2020-09-24 16:10:36,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:10:36" (1/1) ... [2020-09-24 16:10:36,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:10:36,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:10:36,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:10:37,005 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:10:37,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:10:37,044 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:10:37,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:37 WrapperNode [2020-09-24 16:10:37,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:10:37,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:10:37,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:10:37,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:10:37,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:37" (1/1) ... [2020-09-24 16:10:37,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:37" (1/1) ... [2020-09-24 16:10:37,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:37" (1/1) ... [2020-09-24 16:10:37,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:37" (1/1) ... [2020-09-24 16:10:37,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:37" (1/1) ... [2020-09-24 16:10:37,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:37" (1/1) ... [2020-09-24 16:10:37,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:37" (1/1) ... [2020-09-24 16:10:37,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:10:37,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:10:37,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:10:37,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:10:37,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:10:37,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:10:37,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:10:37,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 16:10:37,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:10:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:10:37,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 16:10:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 16:10:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:10:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:10:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:10:37,484 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:10:37,485 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 16:10:37,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:10:37 BoogieIcfgContainer [2020-09-24 16:10:37,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:10:37,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:10:37,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:10:37,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:10:37,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:10:36" (1/3) ... [2020-09-24 16:10:37,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19aca2a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:10:37, skipping insertion in model container [2020-09-24 16:10:37,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:37" (2/3) ... [2020-09-24 16:10:37,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19aca2a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:10:37, skipping insertion in model container [2020-09-24 16:10:37,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:10:37" (3/3) ... [2020-09-24 16:10:37,500 INFO L109 eAbstractionObserver]: Analyzing ICFG multivar_1-1.c [2020-09-24 16:10:37,512 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:10:37,522 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:10:37,542 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:10:37,572 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:10:37,573 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:10:37,573 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:10:37,573 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:10:37,573 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:10:37,573 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:10:37,574 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:10:37,574 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:10:37,593 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-24 16:10:37,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 16:10:37,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:37,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:10:37,601 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:37,609 INFO L82 PathProgramCache]: Analyzing trace with hash 677098305, now seen corresponding path program 1 times [2020-09-24 16:10:37,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:37,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739280884] [2020-09-24 16:10:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:37,735 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:37,736 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:37,736 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:37,736 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:37,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 16:10:37,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 16:10:37,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:10:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:37,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:37,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:10:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:37,773 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:37,773 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:37,773 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:37,774 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:37,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:10:37,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:37,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:10:37,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:37,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:10:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:10:37,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739280884] [2020-09-24 16:10:37,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:10:37,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 16:10:37,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548165429] [2020-09-24 16:10:37,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 16:10:37,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:10:37,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 16:10:37,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 16:10:37,813 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-09-24 16:10:37,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:10:37,837 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-09-24 16:10:37,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 16:10:37,839 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-09-24 16:10:37,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:10:37,850 INFO L225 Difference]: With dead ends: 36 [2020-09-24 16:10:37,851 INFO L226 Difference]: Without dead ends: 19 [2020-09-24 16:10:37,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 16:10:37,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-24 16:10:37,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-09-24 16:10:37,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-24 16:10:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-09-24 16:10:37,901 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2020-09-24 16:10:37,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:10:37,901 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-09-24 16:10:37,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 16:10:37,902 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-09-24 16:10:37,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 16:10:37,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:37,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:10:37,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:10:37,903 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:37,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:37,904 INFO L82 PathProgramCache]: Analyzing trace with hash 667863095, now seen corresponding path program 1 times [2020-09-24 16:10:37,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:37,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580577505] [2020-09-24 16:10:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:38,011 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 16:10:38,011 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:38,012 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:38,012 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:38,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 16:10:38,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:38,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 16:10:38,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:10:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 16:10:38,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:10:38,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:38,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:10:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:38,236 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:38,237 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:38,237 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:38,237 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:38,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:10:38,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:38,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:10:38,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:38,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:38,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:38,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:38,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:38,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:10:38,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580577505] [2020-09-24 16:10:38,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:10:38,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 16:10:38,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913833852] [2020-09-24 16:10:38,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 16:10:38,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:10:38,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 16:10:38,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 16:10:38,249 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2020-09-24 16:10:38,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:10:38,422 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-09-24 16:10:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:10:38,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-24 16:10:38,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:10:38,424 INFO L225 Difference]: With dead ends: 27 [2020-09-24 16:10:38,424 INFO L226 Difference]: Without dead ends: 22 [2020-09-24 16:10:38,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:10:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-24 16:10:38,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-09-24 16:10:38,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-24 16:10:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-09-24 16:10:38,433 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2020-09-24 16:10:38,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:10:38,434 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-09-24 16:10:38,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 16:10:38,434 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-09-24 16:10:38,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-24 16:10:38,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:10:38,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:10:38,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:10:38,436 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:10:38,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:10:38,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1021038377, now seen corresponding path program 1 times [2020-09-24 16:10:38,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:10:38,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304430198] [2020-09-24 16:10:38,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:10:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:38,563 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 16:10:38,563 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:38,563 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:38,564 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:38,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 16:10:38,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:38,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-24 16:10:38,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:10:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 16:10:38,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 16:10:38,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:10:38,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:10:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:10:38,805 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:10:38,806 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:10:38,806 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:10:38,806 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:10:38,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:10:38,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:10:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:10:38,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:10:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:10:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:10:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:10:38,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:10:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:10:38,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304430198] [2020-09-24 16:10:38,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:10:38,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 16:10:38,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035250168] [2020-09-24 16:10:38,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:10:38,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:10:38,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:10:38,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:10:38,823 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 9 states. [2020-09-24 16:10:38,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:10:38,984 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-09-24 16:10:38,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:10:38,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-09-24 16:10:38,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:10:38,985 INFO L225 Difference]: With dead ends: 20 [2020-09-24 16:10:38,985 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 16:10:38,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:10:38,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 16:10:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 16:10:38,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 16:10:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 16:10:38,987 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-24 16:10:38,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:10:38,988 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 16:10:38,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:10:38,988 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 16:10:38,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 16:10:38,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:10:38,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 16:10:39,057 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 16:10:39,057 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:10:39,058 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:10:39,058 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 16:10:39,059 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 16:10:39,059 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:10:39,059 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 21) the Hoare annotation is: true [2020-09-24 16:10:39,059 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 21) no Hoare annotation was computed. [2020-09-24 16:10:39,059 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 16:10:39,059 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 16:10:39,060 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 16:10:39,061 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 16:10:39,061 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 16:10:39,061 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 16:10:39,061 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 16:10:39,061 INFO L264 CegarLoopResult]: At program point L15-2(lines 15 18) the Hoare annotation is: (= main_~y~0 main_~x~0) [2020-09-24 16:10:39,061 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 21) no Hoare annotation was computed. [2020-09-24 16:10:39,062 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 16:10:39,062 INFO L264 CegarLoopResult]: At program point L15-3(lines 15 18) the Hoare annotation is: (let ((.cse1 (* 4294967296 (div main_~x~0 4294967296))) (.cse0 (+ main_~x~0 (* 4294967296 (div main_~y~0 4294967296))))) (and (< .cse0 (+ main_~y~0 .cse1 1)) (<= (+ main_~y~0 .cse1) .cse0) (<= main_~y~0 main_~x~0))) [2020-09-24 16:10:39,063 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-09-24 16:10:39,063 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-24 16:10:39,063 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 16:10:39,064 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-09-24 16:10:39,064 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-24 16:10:39,064 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-09-24 16:10:39,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:10:39 BoogieIcfgContainer [2020-09-24 16:10:39,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:10:39,094 INFO L168 Benchmark]: Toolchain (without parser) took 2384.32 ms. Allocated memory was 140.0 MB in the beginning and 234.9 MB in the end (delta: 94.9 MB). Free memory was 102.0 MB in the beginning and 194.3 MB in the end (delta: -92.3 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:39,098 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 16:10:39,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.98 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 92.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:39,102 INFO L168 Benchmark]: Boogie Preprocessor took 154.81 ms. Allocated memory was 140.0 MB in the beginning and 205.5 MB in the end (delta: 65.5 MB). Free memory was 92.0 MB in the beginning and 185.5 MB in the end (delta: -93.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:39,104 INFO L168 Benchmark]: RCFGBuilder took 288.90 ms. Allocated memory is still 205.5 MB. Free memory was 185.5 MB in the beginning and 173.1 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:39,111 INFO L168 Benchmark]: TraceAbstraction took 1596.67 ms. Allocated memory was 205.5 MB in the beginning and 234.9 MB in the end (delta: 29.4 MB). Free memory was 172.5 MB in the beginning and 194.3 MB in the end (delta: -21.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:10:39,123 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 333.98 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 92.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.81 ms. Allocated memory was 140.0 MB in the beginning and 205.5 MB in the end (delta: 65.5 MB). Free memory was 92.0 MB in the beginning and 185.5 MB in the end (delta: -93.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 288.90 ms. Allocated memory is still 205.5 MB. Free memory was 185.5 MB in the beginning and 173.1 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1596.67 ms. Allocated memory was 205.5 MB in the beginning and 234.9 MB in the end (delta: 29.4 MB). Free memory was 172.5 MB in the beginning and 194.3 MB in the end (delta: -21.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: y == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 9 SDslu, 93 SDs, 0 SdLazy, 71 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 43 HoareAnnotationTreeSize, 9 FomulaSimplifications, 39 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 3914 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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 correct! Received shutdown request...