/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invariants/eq1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:49:53,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:49:53,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:49:53,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:49:53,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:49:53,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:49:53,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:49:53,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:49:53,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:49:53,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:49:53,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:49:53,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:49:53,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:49:53,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:49:53,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:49:53,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:49:53,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:49:53,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:49:53,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:49:53,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:49:53,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:49:53,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:49:53,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:49:53,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:49:53,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:49:53,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:49:53,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:49:53,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:49:53,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:49:53,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:49:53,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:49:53,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:49:53,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:49:53,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:49:53,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:49:53,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:49:53,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:49:53,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:49:53,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:49:53,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:49:53,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:49:53,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:49:53,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:49:53,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:49:53,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:49:53,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:49:53,646 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:49:53,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:49:53,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:49:53,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:49:53,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:49:53,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:49:53,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:49:53,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:49:53,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:49:53,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:49:53,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:49:53,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:49:53,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:49:53,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:49:53,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:49:53,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:49:53,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:49:53,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:49:53,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:49:53,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:49:53,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:49:53,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:49:53,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:49:53,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:49:53,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:49:53,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:49:53,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:49:53,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:49:53,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:49:53,960 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:49:53,960 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:49:53,961 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq1.c [2020-10-13 10:49:54,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1f75a9ad/12be62c50a784e188a70f5edb95e207e/FLAGa9eb1a6a7 [2020-10-13 10:49:54,429 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:49:54,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invariants/eq1.c [2020-10-13 10:49:54,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1f75a9ad/12be62c50a784e188a70f5edb95e207e/FLAGa9eb1a6a7 [2020-10-13 10:49:54,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1f75a9ad/12be62c50a784e188a70f5edb95e207e [2020-10-13 10:49:54,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:49:54,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:49:54,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:49:54,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:49:54,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:49:54,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:49:54" (1/1) ... [2020-10-13 10:49:54,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:54, skipping insertion in model container [2020-10-13 10:49:54,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:49:54" (1/1) ... [2020-10-13 10:49:54,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:49:54,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:49:55,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:49:55,059 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:49:55,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:49:55,088 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:49:55,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:55 WrapperNode [2020-10-13 10:49:55,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:49:55,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:49:55,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:49:55,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:49:55,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:55" (1/1) ... [2020-10-13 10:49:55,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:55" (1/1) ... [2020-10-13 10:49:55,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:55" (1/1) ... [2020-10-13 10:49:55,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:55" (1/1) ... [2020-10-13 10:49:55,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:55" (1/1) ... [2020-10-13 10:49:55,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:55" (1/1) ... [2020-10-13 10:49:55,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:55" (1/1) ... [2020-10-13 10:49:55,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:49:55,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:49:55,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:49:55,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:49:55,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:49:55,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:49:55,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:49:55,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 10:49:55,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-13 10:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 10:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:49:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:49:55,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:49:55,446 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:49:55,446 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 10:49:55,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:49:55 BoogieIcfgContainer [2020-10-13 10:49:55,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:49:55,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:49:55,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:49:55,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:49:55,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:49:54" (1/3) ... [2020-10-13 10:49:55,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7711dfbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:49:55, skipping insertion in model container [2020-10-13 10:49:55,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:49:55" (2/3) ... [2020-10-13 10:49:55,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7711dfbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:49:55, skipping insertion in model container [2020-10-13 10:49:55,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:49:55" (3/3) ... [2020-10-13 10:49:55,459 INFO L109 eAbstractionObserver]: Analyzing ICFG eq1.c [2020-10-13 10:49:55,471 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:49:55,478 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:49:55,492 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:49:55,513 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:49:55,514 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:49:55,514 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:49:55,514 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:49:55,514 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:49:55,514 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:49:55,514 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:49:55,515 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:49:55,531 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-13 10:49:55,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 10:49:55,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:49:55,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:49:55,538 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:49:55,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:49:55,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2020-10-13 10:49:55,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:49:55,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955372712] [2020-10-13 10:49:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:49:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:49:55,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:55,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:55,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:49:55,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:49:55,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:49:55,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-13 10:49:55,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:49:55,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:49:55,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:49:55,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:49:55,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:49:55,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:49:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:49:55,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:55,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:49:55,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:49:55,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:49:55,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:49:55,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:49:55,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:49:55,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:49:55,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:49:55,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:49:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:49:55,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955372712] [2020-10-13 10:49:55,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:49:55,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-13 10:49:55,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304301317] [2020-10-13 10:49:55,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-13 10:49:55,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:49:55,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-13 10:49:55,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-13 10:49:55,991 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-13 10:49:56,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:49:56,017 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-10-13 10:49:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-13 10:49:56,019 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-13 10:49:56,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:49:56,029 INFO L225 Difference]: With dead ends: 31 [2020-10-13 10:49:56,029 INFO L226 Difference]: Without dead ends: 12 [2020-10-13 10:49:56,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-13 10:49:56,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-13 10:49:56,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-13 10:49:56,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-13 10:49:56,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-10-13 10:49:56,070 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2020-10-13 10:49:56,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:49:56,071 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-10-13 10:49:56,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-13 10:49:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-10-13 10:49:56,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 10:49:56,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:49:56,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:49:56,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:49:56,073 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:49:56,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:49:56,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1703094711, now seen corresponding path program 1 times [2020-10-13 10:49:56,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:49:56,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431663888] [2020-10-13 10:49:56,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:49:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:49:56,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:56,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:49:56,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:49:56,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:49:56,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-13 10:49:56,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:49:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:49:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:49:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:49:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:49:56,538 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 30 [2020-10-13 10:49:56,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:49:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:49:56,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:56,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:49:56,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:49:56,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:49:56,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:49:56,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:49:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:49:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:49:56,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:49:56,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:49:56,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:49:56,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431663888] [2020-10-13 10:49:56,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:49:56,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:49:56,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851743632] [2020-10-13 10:49:56,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:49:56,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:49:56,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:49:56,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:49:56,574 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 5 states. [2020-10-13 10:49:58,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:49:58,707 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-10-13 10:49:58,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:49:58,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-13 10:49:58,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:49:58,709 INFO L225 Difference]: With dead ends: 19 [2020-10-13 10:49:58,709 INFO L226 Difference]: Without dead ends: 14 [2020-10-13 10:49:58,710 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 [2020-10-13 10:49:58,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-13 10:49:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-13 10:49:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-13 10:49:58,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-10-13 10:49:58,716 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2020-10-13 10:49:58,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:49:58,717 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-10-13 10:49:58,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:49:58,717 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-10-13 10:49:58,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-13 10:49:58,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:49:58,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:49:58,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:49:58,718 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:49:58,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:49:58,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1394515186, now seen corresponding path program 1 times [2020-10-13 10:49:58,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:49:58,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184189162] [2020-10-13 10:49:58,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:49:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:49:58,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:58,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:49:58,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:49:58,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:49:58,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 10:49:58,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:49:58,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:49:58,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:49:58,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:49:58,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:49:59,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:49:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:49:59,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:49:59,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:49:59,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 10:49:59,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:49:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:49:59,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:49:59,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:49:59,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:49:59,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:49:59,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:49:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:49:59,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184189162] [2020-10-13 10:49:59,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:49:59,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 10:49:59,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180260603] [2020-10-13 10:49:59,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:49:59,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:49:59,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:49:59,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:49:59,058 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 6 states. [2020-10-13 10:49:59,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:49:59,098 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-10-13 10:49:59,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:49:59,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-13 10:49:59,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:49:59,099 INFO L225 Difference]: With dead ends: 14 [2020-10-13 10:49:59,099 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 10:49:59,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:49:59,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 10:49:59,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 10:49:59,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 10:49:59,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 10:49:59,102 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-13 10:49:59,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:49:59,102 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 10:49:59,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:49:59,102 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 10:49:59,102 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 10:49:59,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:49:59,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-13 10:49:59,234 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-13 10:49:59,234 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-13 10:49:59,235 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-13 10:49:59,235 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-13 10:49:59,235 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-13 10:49:59,235 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-13 10:49:59,235 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 23) the Hoare annotation is: true [2020-10-13 10:49:59,236 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 23) no Hoare annotation was computed. [2020-10-13 10:49:59,236 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-10-13 10:49:59,236 INFO L268 CegarLoopResult]: For program point L15(lines 15 19) no Hoare annotation was computed. [2020-10-13 10:49:59,236 INFO L264 CegarLoopResult]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (= main_~x~0 main_~w~0) (= main_~z~0 main_~y~0)) [2020-10-13 10:49:59,237 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 9 23) no Hoare annotation was computed. [2020-10-13 10:49:59,237 INFO L264 CegarLoopResult]: At program point L14-2(lines 14 20) the Hoare annotation is: (let ((.cse5 (div main_~w~0 4294967296)) (.cse4 (div main_~x~0 4294967296))) (let ((.cse1 (+ main_~y~0 (* 4294967296 (div main_~z~0 4294967296)))) (.cse0 (* 4294967296 (div main_~y~0 4294967296))) (.cse3 (+ main_~w~0 (* 4294967296 .cse4))) (.cse2 (* 4294967296 .cse5))) (and (<= (+ main_~z~0 .cse0) .cse1) (< .cse1 (+ main_~z~0 .cse0 1)) (<= (+ main_~x~0 .cse2) .cse3) (<= main_~z~0 main_~y~0) (<= .cse4 .cse5) (< .cse3 (+ main_~x~0 .cse2 1))))) [2020-10-13 10:49:59,237 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-10-13 10:49:59,237 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-10-13 10:49:59,238 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-10-13 10:49:59,238 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-10-13 10:49:59,238 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-13 10:49:59,238 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-10-13 10:49:59,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:49:59 BoogieIcfgContainer [2020-10-13 10:49:59,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:49:59,260 INFO L168 Benchmark]: Toolchain (without parser) took 4451.38 ms. Allocated memory was 140.5 MB in the beginning and 234.9 MB in the end (delta: 94.4 MB). Free memory was 100.9 MB in the beginning and 178.7 MB in the end (delta: -77.8 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:49:59,260 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 119.2 MB in the beginning and 118.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:49:59,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.45 ms. Allocated memory is still 140.5 MB. Free memory was 100.7 MB in the beginning and 91.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:49:59,262 INFO L168 Benchmark]: Boogie Preprocessor took 109.07 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 91.2 MB in the beginning and 180.8 MB in the end (delta: -89.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:49:59,263 INFO L168 Benchmark]: RCFGBuilder took 251.65 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 168.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:49:59,264 INFO L168 Benchmark]: TraceAbstraction took 3805.46 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 168.5 MB in the beginning and 178.7 MB in the end (delta: -10.2 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-13 10:49:59,268 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 119.2 MB in the beginning and 118.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.45 ms. Allocated memory is still 140.5 MB. Free memory was 100.7 MB in the beginning and 91.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.07 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 91.2 MB in the beginning and 180.8 MB in the end (delta: -89.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 251.65 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 168.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3805.46 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 168.5 MB in the beginning and 178.7 MB in the end (delta: -10.2 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 14]: Loop Invariant Derived loop invariant: x == w && z == y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 5 SDslu, 52 SDs, 0 SdLazy, 22 SolverSat, 4 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 85 HoareAnnotationTreeSize, 9 FomulaSimplifications, 80 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 2777 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...