/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:51:12,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:51:12,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:51:12,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:51:12,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:51:12,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:51:12,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:51:12,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:51:12,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:51:12,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:51:12,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:51:12,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:51:12,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:51:12,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:51:12,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:51:12,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:51:12,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:51:12,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:51:12,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:51:12,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:51:12,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:51:12,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:51:12,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:51:12,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:51:12,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:51:12,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:51:12,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:51:12,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:51:12,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:51:12,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:51:12,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:51:12,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:51:12,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:51:12,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:51:12,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:51:12,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:51:12,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:51:12,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:51:12,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:51:12,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:51:12,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:51:12,411 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 21:51:12,460 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:51:12,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:51:12,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:51:12,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:51:12,463 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:51:12,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:51:12,464 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:51:12,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:51:12,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:51:12,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:51:12,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:51:12,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:51:12,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:51:12,467 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:51:12,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:51:12,467 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:51:12,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:51:12,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:51:12,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:51:12,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:51:12,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:51:12,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:51:12,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:51:12,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:51:12,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:51:12,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:51:12,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:51:12,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:51:12,470 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:51:12,470 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;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:51:12,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:51:12,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:51:12,945 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:51:12,947 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:51:12,947 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:51:12,949 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i [2020-09-24 21:51:13,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90c683a19/12409d481815490e8c13b2cfac3398d0/FLAG2d3e34333 [2020-09-24 21:51:13,609 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:51:13,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/id_build.i [2020-09-24 21:51:13,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90c683a19/12409d481815490e8c13b2cfac3398d0/FLAG2d3e34333 [2020-09-24 21:51:13,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90c683a19/12409d481815490e8c13b2cfac3398d0 [2020-09-24 21:51:13,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:51:13,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:51:13,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:51:13,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:51:13,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:51:13,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:51:13" (1/1) ... [2020-09-24 21:51:13,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa69d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:13, skipping insertion in model container [2020-09-24 21:51:13,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:51:13" (1/1) ... [2020-09-24 21:51:13,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:51:14,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:51:14,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:51:14,244 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:51:14,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:51:14,284 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:51:14,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:14 WrapperNode [2020-09-24 21:51:14,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:51:14,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:51:14,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:51:14,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:51:14,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:14" (1/1) ... [2020-09-24 21:51:14,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:14" (1/1) ... [2020-09-24 21:51:14,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:14" (1/1) ... [2020-09-24 21:51:14,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:14" (1/1) ... [2020-09-24 21:51:14,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:14" (1/1) ... [2020-09-24 21:51:14,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:14" (1/1) ... [2020-09-24 21:51:14,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:14" (1/1) ... [2020-09-24 21:51:14,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:51:14,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:51:14,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:51:14,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:51:14,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:14" (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 21:51:14,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:51:14,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:51:14,488 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:51:14,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:51:14,488 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:51:14,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:51:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:51:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:51:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:51:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:51:14,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:51:14,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:51:14,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:51:14,728 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:51:14,728 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 21:51:14,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:51:14 BoogieIcfgContainer [2020-09-24 21:51:14,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:51:14,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:51:14,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:51:14,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:51:14,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:51:13" (1/3) ... [2020-09-24 21:51:14,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a51b8c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:51:14, skipping insertion in model container [2020-09-24 21:51:14,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:14" (2/3) ... [2020-09-24 21:51:14,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a51b8c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:51:14, skipping insertion in model container [2020-09-24 21:51:14,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:51:14" (3/3) ... [2020-09-24 21:51:14,745 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i [2020-09-24 21:51:14,761 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:51:14,773 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:51:14,801 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:51:14,846 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:51:14,847 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:51:14,847 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:51:14,847 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:51:14,847 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:51:14,847 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:51:14,848 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:51:14,848 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:51:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-24 21:51:14,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-24 21:51:14,882 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:14,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:51:14,884 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:51:14,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:14,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2141903635, now seen corresponding path program 1 times [2020-09-24 21:51:14,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:14,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021028127] [2020-09-24 21:51:14,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:15,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:15,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:15,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 21:51:15,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:15,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 21:51:15,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:51:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:51:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:51:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:51:15,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:15,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:15,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:15,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:51:15,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:15,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:51:15,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:15,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:15,261 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 21:51:15,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021028127] [2020-09-24 21:51:15,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:15,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:51:15,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92018065] [2020-09-24 21:51:15,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:51:15,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:15,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:51:15,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:51:15,296 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-09-24 21:51:15,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:15,413 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2020-09-24 21:51:15,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:51:15,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-24 21:51:15,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:15,426 INFO L225 Difference]: With dead ends: 60 [2020-09-24 21:51:15,427 INFO L226 Difference]: Without dead ends: 33 [2020-09-24 21:51:15,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:51:15,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-24 21:51:15,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-24 21:51:15,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-24 21:51:15,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-24 21:51:15,485 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 19 [2020-09-24 21:51:15,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:15,486 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-24 21:51:15,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:51:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-24 21:51:15,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 21:51:15,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:15,488 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] [2020-09-24 21:51:15,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:51:15,488 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:51:15,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:15,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1520201371, now seen corresponding path program 1 times [2020-09-24 21:51:15,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:15,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077456955] [2020-09-24 21:51:15,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:15,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:15,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 21:51:15,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:15,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-24 21:51:15,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:15,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:51:15,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:51:15,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:51:15,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:51:15,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:15,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:15,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:15,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:51:15,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:15,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:51:15,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:15,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:15,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:51:15,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 21:51:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:15,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:15,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:15,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:51:15,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:15,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:51:15,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:15,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:51:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:51:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:51:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:51:15,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077456955] [2020-09-24 21:51:15,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:15,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:51:15,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162374986] [2020-09-24 21:51:15,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:51:15,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:15,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:51:15,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:51:15,803 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 5 states. [2020-09-24 21:51:15,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:15,859 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-09-24 21:51:15,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:51:15,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-24 21:51:15,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:15,862 INFO L225 Difference]: With dead ends: 49 [2020-09-24 21:51:15,863 INFO L226 Difference]: Without dead ends: 47 [2020-09-24 21:51:15,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:51:15,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-24 21:51:15,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-09-24 21:51:15,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 21:51:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-09-24 21:51:15,881 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 24 [2020-09-24 21:51:15,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:15,882 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-09-24 21:51:15,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:51:15,882 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-09-24 21:51:15,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 21:51:15,885 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:15,885 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-09-24 21:51:15,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:51:15,885 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:51:15,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:15,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1589830701, now seen corresponding path program 1 times [2020-09-24 21:51:15,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:15,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755707999] [2020-09-24 21:51:15,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:15,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:15,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:16,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:16,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 21:51:16,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:51:16,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-24 21:51:16,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:16,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:51:16,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:51:16,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 21:51:16,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:51:16,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:16,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:16,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:16,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:51:16,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:16,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:51:16,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:16,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:16,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:16,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:16,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:51:16,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:51:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:16,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:16,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:16,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:51:16,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:16,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 21:51:16,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:16,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:51:16,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:16,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:51:16,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:51:16,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755707999] [2020-09-24 21:51:16,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:16,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:51:16,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166926168] [2020-09-24 21:51:16,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:51:16,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:16,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:51:16,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:51:16,284 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 7 states. [2020-09-24 21:51:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:16,440 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-09-24 21:51:16,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:51:16,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-09-24 21:51:16,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:16,447 INFO L225 Difference]: With dead ends: 47 [2020-09-24 21:51:16,447 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 21:51:16,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:51:16,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 21:51:16,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 21:51:16,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 21:51:16,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 21:51:16,453 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-09-24 21:51:16,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:16,453 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 21:51:16,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:51:16,453 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 21:51:16,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 21:51:16,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:51:16,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 21:51:16,642 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 21:51:16,642 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:51:16,642 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:51:16,643 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 21:51:16,643 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 21:51:16,643 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:51:16,643 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 21:51:16,643 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 21:51:16,643 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 21:51:16,644 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 21:51:16,644 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 21:51:16,644 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 23) no Hoare annotation was computed. [2020-09-24 21:51:16,644 INFO L268 CegarLoopResult]: For program point L19(lines 17 20) no Hoare annotation was computed. [2020-09-24 21:51:16,644 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 21:51:16,644 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 21:51:16,645 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 21:51:16,645 INFO L268 CegarLoopResult]: For program point L17-3(line 17) no Hoare annotation was computed. [2020-09-24 21:51:16,645 INFO L268 CegarLoopResult]: For program point L17-4(line 17) no Hoare annotation was computed. [2020-09-24 21:51:16,645 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 23) no Hoare annotation was computed. [2020-09-24 21:51:16,645 INFO L264 CegarLoopResult]: At program point L17-5(lines 17 20) the Hoare annotation is: (and (<= 0 main_~i~0) (< main_~i~0 main_~nlen~0)) [2020-09-24 21:51:16,646 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 23) the Hoare annotation is: true [2020-09-24 21:51:16,646 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (<= 0 main_~i~0) (< main_~i~0 main_~nlen~0)) [2020-09-24 21:51:16,646 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (and (<= 0 main_~i~0) (< main_~i~0 main_~nlen~0)) [2020-09-24 21:51:16,646 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 21:51:16,646 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 21:51:16,646 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 21:51:16,647 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 21) no Hoare annotation was computed. [2020-09-24 21:51:16,647 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-24 21:51:16,647 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-24 21:51:16,647 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-24 21:51:16,647 INFO L268 CegarLoopResult]: For program point L16-5(line 16) no Hoare annotation was computed. [2020-09-24 21:51:16,648 INFO L264 CegarLoopResult]: At program point L16-6(lines 16 21) the Hoare annotation is: (<= 0 main_~i~0) [2020-09-24 21:51:16,648 INFO L268 CegarLoopResult]: For program point L16-7(lines 16 21) no Hoare annotation was computed. [2020-09-24 21:51:16,648 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 21:51:16,648 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 21:51:16,648 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 21:51:16,648 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 21:51:16,648 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 21:51:16,649 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 21:51:16,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:51:16 BoogieIcfgContainer [2020-09-24 21:51:16,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:51:16,676 INFO L168 Benchmark]: Toolchain (without parser) took 2724.48 ms. Allocated memory was 140.5 MB in the beginning and 234.9 MB in the end (delta: 94.4 MB). Free memory was 103.0 MB in the beginning and 178.3 MB in the end (delta: -75.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:51:16,677 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 21:51:16,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.39 ms. Allocated memory is still 140.5 MB. Free memory was 102.3 MB in the beginning and 92.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:51:16,679 INFO L168 Benchmark]: Boogie Preprocessor took 126.53 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 92.8 MB in the beginning and 183.5 MB in the end (delta: -90.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:51:16,680 INFO L168 Benchmark]: RCFGBuilder took 321.10 ms. Allocated memory is still 203.9 MB. Free memory was 183.5 MB in the beginning and 169.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:51:16,681 INFO L168 Benchmark]: TraceAbstraction took 1936.99 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 169.3 MB in the beginning and 178.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-09-24 21:51:16,686 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 331.39 ms. Allocated memory is still 140.5 MB. Free memory was 102.3 MB in the beginning and 92.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.53 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 92.8 MB in the beginning and 183.5 MB in the end (delta: -90.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 321.10 ms. Allocated memory is still 203.9 MB. Free memory was 183.5 MB in the beginning and 169.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1936.99 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 169.3 MB in the beginning and 178.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 17]: Loop Invariant Derived loop invariant: 0 <= i && i < nlen - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 <= i - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 34 SDslu, 279 SDs, 0 SdLazy, 87 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 14 PreInvPairs, 22 NumberOfFragments, 29 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 49 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 3284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 7/7 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...