/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/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:01:27,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:01:27,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:01:27,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:01:27,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:01:27,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:01:27,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:01:27,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:01:27,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:01:27,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:01:27,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:01:27,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:01:27,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:01:27,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:01:27,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:01:27,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:01:27,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:01:27,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:01:27,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:01:27,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:01:27,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:01:27,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:01:27,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:01:27,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:01:27,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:01:27,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:01:27,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:01:27,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:01:27,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:01:27,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:01:27,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:01:27,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:01:27,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:01:27,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:01:27,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:01:27,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:01:27,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:01:27,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:01:27,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:01:27,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:01:27,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:01:27,648 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 16:01:27,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:01:27,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:01:27,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:01:27,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:01:27,698 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:01:27,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:01:27,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:01:27,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:01:27,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:01:27,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:01:27,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:01:27,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:01:27,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:01:27,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:01:27,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:01:27,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:01:27,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:01:27,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:01:27,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:01:27,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:01:27,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:01:27,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:01:27,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:01:27,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:01:27,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:01:27,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:01:27,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:01:27,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:01:27,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:01:27,705 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 16:01:28,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:01:28,190 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:01:28,197 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:01:28,198 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:01:28,200 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:01:28,201 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-24 16:01:28,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dba70ec65/be2949a0fe3d445b86ede4f6773ac187/FLAG6ce16a416 [2020-09-24 16:01:28,880 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:01:28,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-24 16:01:28,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dba70ec65/be2949a0fe3d445b86ede4f6773ac187/FLAG6ce16a416 [2020-09-24 16:01:29,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dba70ec65/be2949a0fe3d445b86ede4f6773ac187 [2020-09-24 16:01:29,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:01:29,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:01:29,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:29,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:01:29,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:01:29,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:29" (1/1) ... [2020-09-24 16:01:29,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240fc400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:29, skipping insertion in model container [2020-09-24 16:01:29,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:01:29" (1/1) ... [2020-09-24 16:01:29,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:01:29,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:01:29,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:29,511 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:01:29,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:01:29,628 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:01:29,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:29 WrapperNode [2020-09-24 16:01:29,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:01:29,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:01:29,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:01:29,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:01:29,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:29" (1/1) ... [2020-09-24 16:01:29,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:29" (1/1) ... [2020-09-24 16:01:29,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:29" (1/1) ... [2020-09-24 16:01:29,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:29" (1/1) ... [2020-09-24 16:01:29,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:29" (1/1) ... [2020-09-24 16:01:29,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:29" (1/1) ... [2020-09-24 16:01:29,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:29" (1/1) ... [2020-09-24 16:01:29,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:01:29,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:01:29,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:01:29,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:01:29,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:29" (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 16:01:29,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:01:29,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:01:29,752 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 16:01:29,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:01:29,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:01:29,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:01:29,753 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 16:01:29,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:01:29,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:01:29,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:01:29,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:01:29,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:01:29,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:01:29,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:01:30,073 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:01:30,074 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 16:01:30,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:30 BoogieIcfgContainer [2020-09-24 16:01:30,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:01:30,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:01:30,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:01:30,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:01:30,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:01:29" (1/3) ... [2020-09-24 16:01:30,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b48e033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:30, skipping insertion in model container [2020-09-24 16:01:30,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:01:29" (2/3) ... [2020-09-24 16:01:30,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b48e033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:01:30, skipping insertion in model container [2020-09-24 16:01:30,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:01:30" (3/3) ... [2020-09-24 16:01:30,090 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-09-24 16:01:30,101 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:01:30,112 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:01:30,133 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:01:30,161 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:01:30,162 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:01:30,162 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:01:30,162 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:01:30,162 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:01:30,162 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:01:30,162 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:01:30,162 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:01:30,184 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-09-24 16:01:30,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 16:01:30,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:30,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:30,194 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:30,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:30,200 INFO L82 PathProgramCache]: Analyzing trace with hash 606292035, now seen corresponding path program 1 times [2020-09-24 16:01:30,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:30,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152742325] [2020-09-24 16:01:30,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:30,367 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:30,368 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:30,368 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:30,368 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:30,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 16:01:30,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:30,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 16:01:30,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:30,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:30,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 16:01:30,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:30,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:30,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:30,455 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:30,456 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:30,456 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:30,456 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:30,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:30,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:30,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:30,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:30,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:30,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 16:01:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:30,478 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:30,479 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:30,479 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:30,479 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:30,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:30,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:30,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:30,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:30,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:30,502 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 16:01:30,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152742325] [2020-09-24 16:01:30,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:30,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:01:30,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314064220] [2020-09-24 16:01:30,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:01:30,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:30,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:01:30,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:01:30,533 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-09-24 16:01:30,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:30,669 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-09-24 16:01:30,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:01:30,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-09-24 16:01:30,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:30,684 INFO L225 Difference]: With dead ends: 73 [2020-09-24 16:01:30,685 INFO L226 Difference]: Without dead ends: 41 [2020-09-24 16:01:30,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:01:30,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-24 16:01:30,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-24 16:01:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-24 16:01:30,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-24 16:01:30,743 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2020-09-24 16:01:30,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:30,743 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-24 16:01:30,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:01:30,744 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-24 16:01:30,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 16:01:30,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:30,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:30,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:01:30,746 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:30,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:30,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1986388344, now seen corresponding path program 1 times [2020-09-24 16:01:30,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:30,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787759034] [2020-09-24 16:01:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:30,865 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 16:01:30,866 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:30,866 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:30,866 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:30,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 16:01:30,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:30,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 16:01:30,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:01:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 16:01:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 16:01:30,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:30,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:30,986 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:30,986 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:30,986 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:30,987 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:30,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:30,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:30,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:30,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:30,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:30,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:30,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:30,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:30,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 16:01:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:30,999 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:30,999 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,000 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,000 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:31,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:31,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:01:31,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:31,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:01:31,012 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 16:01:31,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787759034] [2020-09-24 16:01:31,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:01:31,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 16:01:31,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351607031] [2020-09-24 16:01:31,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 16:01:31,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:31,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 16:01:31,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 16:01:31,023 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 8 states. [2020-09-24 16:01:31,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:31,306 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2020-09-24 16:01:31,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 16:01:31,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-24 16:01:31,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:31,309 INFO L225 Difference]: With dead ends: 60 [2020-09-24 16:01:31,309 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 16:01:31,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:01:31,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 16:01:31,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-09-24 16:01:31,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 16:01:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-09-24 16:01:31,319 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 36 [2020-09-24 16:01:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:31,320 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-09-24 16:01:31,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 16:01:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-09-24 16:01:31,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 16:01:31,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:01:31,322 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:01:31,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:01:31,322 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:01:31,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:01:31,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1471095088, now seen corresponding path program 1 times [2020-09-24 16:01:31,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:01:31,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421264724] [2020-09-24 16:01:31,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:01:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,601 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 16:01:31,602 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -9 [2020-09-24 16:01:31,602 FATAL L256 erpolLogProxyWrapper]: Difference in width: 9 [2020-09-24 16:01:31,603 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 16:01:31,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-24 16:01:31,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 16:01:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 16:01:31,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 16:01:31,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:31,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:01:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,867 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,867 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,868 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,868 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:01:31,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:01:31,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:01:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:01:31,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:31,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 16:01:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:01:31,903 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:01:31,903 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:01:31,903 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:01:31,903 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:01:31,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:01:31,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:01:31,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 16:01:31,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:01:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:01:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:01:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 16:01:31,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:01:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:01:32,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421264724] [2020-09-24 16:01:32,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:01:32,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 16:01:32,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291770990] [2020-09-24 16:01:32,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 16:01:32,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:01:32,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 16:01:32,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:01:32,039 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 14 states. [2020-09-24 16:01:32,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:01:32,763 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-09-24 16:01:32,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 16:01:32,770 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-09-24 16:01:32,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:01:32,771 INFO L225 Difference]: With dead ends: 43 [2020-09-24 16:01:32,771 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 16:01:32,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-09-24 16:01:32,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 16:01:32,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 16:01:32,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 16:01:32,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 16:01:32,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-09-24 16:01:32,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:01:32,774 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 16:01:32,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 16:01:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 16:01:32,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 16:01:32,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:01:32,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 16:01:32,877 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 16:01:32,877 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 16:01:32,877 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:01:32,877 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 16:01:32,878 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:01:32,878 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:01:32,878 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 16:01:32,878 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 16:01:32,878 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:01:32,878 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 16:01:32,878 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-24 16:01:32,879 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-24 16:01:32,879 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2020-09-24 16:01:32,879 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 16:01:32,879 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 16:01:32,879 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 16:01:32,879 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-24 16:01:32,879 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-24 16:01:32,880 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 16:01:32,880 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 16:01:32,880 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 16:01:32,880 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-09-24 16:01:32,880 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-24 16:01:32,880 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 16:01:32,881 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 16:01:32,881 INFO L268 CegarLoopResult]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2020-09-24 16:01:32,881 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-09-24 16:01:32,881 INFO L268 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-09-24 16:01:32,881 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 16:01:32,881 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 16:01:32,881 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 16:01:32,882 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-09-24 16:01:32,882 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2020-09-24 16:01:32,882 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 16:01:32,882 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 16:01:32,882 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2020-09-24 16:01:32,882 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-09-24 16:01:32,883 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-09-24 16:01:32,883 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 16:01:32,883 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2020-09-24 16:01:32,883 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-24 16:01:32,883 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 16:01:32,883 INFO L268 CegarLoopResult]: For program point L26-4(line 26) no Hoare annotation was computed. [2020-09-24 16:01:32,884 INFO L264 CegarLoopResult]: At program point L26-5(lines 26 28) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= main_~pa~0.base |main_~#ad1~0.base|) (= (+ (* .cse0 8) |main_~#ad1~0.offset|) main_~pa~0.offset) (<= (* 8 main_~i~0) (* 8 .cse0)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base))) [2020-09-24 16:01:32,884 INFO L264 CegarLoopResult]: At program point L26-6(lines 26 28) the Hoare annotation is: (let ((.cse0 (* 8 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)))) (and (= main_~pa~0.base |main_~#ad1~0.base|) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (= (+ .cse0 |main_~#ad1~0.offset|) main_~pa~0.offset) (<= (* 8 main_~i~0) .cse0) (= main_~ad2~0.offset |main_~#ad1~0.offset|) (= |main_~#ad1~0.base| main_~ad2~0.base))) [2020-09-24 16:01:32,884 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-09-24 16:01:32,884 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 16:01:32,885 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-24 16:01:32,885 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-09-24 16:01:32,885 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-09-24 16:01:32,885 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2020-09-24 16:01:32,885 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2020-09-24 16:01:32,903 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 16:01:32,904 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 16:01:32,909 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 16:01:32,910 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 16:01:32,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:01:32 BoogieIcfgContainer [2020-09-24 16:01:32,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:01:32,917 INFO L168 Benchmark]: Toolchain (without parser) took 3705.78 ms. Allocated memory was 139.5 MB in the beginning and 246.9 MB in the end (delta: 107.5 MB). Free memory was 101.4 MB in the beginning and 169.6 MB in the end (delta: -68.2 MB). Peak memory consumption was 39.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:32,918 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:01:32,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.60 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.7 MB in the beginning and 181.3 MB in the end (delta: -80.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:32,920 INFO L168 Benchmark]: Boogie Preprocessor took 41.09 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 179.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:32,921 INFO L168 Benchmark]: RCFGBuilder took 408.32 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 162.5 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:32,922 INFO L168 Benchmark]: TraceAbstraction took 2831.96 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 161.9 MB in the beginning and 169.6 MB in the end (delta: -7.7 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:01:32,926 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 415.60 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 100.7 MB in the beginning and 181.3 MB in the end (delta: -80.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.09 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 179.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 408.32 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 162.5 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2831.96 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 161.9 MB in the beginning and 169.6 MB in the end (delta: -7.7 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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: 0 - InvariantResult [Line: 26]: Loop Invariant [2020-09-24 16:01:32,937 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 16:01:32,937 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 16:01:32,938 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 16:01:32,938 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((pa == ad1 && unknown-#memory_int-unknown[pa][pa] * 8 + ad1 == pa) && 8 * i <= 8 * unknown-#memory_int-unknown[pa][pa]) && ad1 == ad2) && ad1 == ad2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 107 SDtfs, 74 SDslu, 246 SDs, 0 SdLazy, 350 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 92 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 47 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 22687 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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...