/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=WIDEST --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 [2020-09-25 03:27:47,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:27:47,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:27:47,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:27:47,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:27:47,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:27:47,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:27:47,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:27:47,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:27:47,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:27:47,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:27:47,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:27:47,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:27:47,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:27:47,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:27:47,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:27:47,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:27:47,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:27:47,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:27:47,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:27:47,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:27:47,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:27:47,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:27:47,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:27:47,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:27:47,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:27:47,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:27:47,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:27:47,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:27:47,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:27:47,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:27:47,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:27:47,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:27:47,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:27:47,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:27:47,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:27:47,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:27:47,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:27:47,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:27:47,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:27:47,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:27:47,519 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 [2020-09-25 03:27:47,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:27:47,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:27:47,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:27:47,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:27:47,569 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:27:47,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:27:47,570 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:27:47,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:27:47,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:27:47,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:27:47,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:27:47,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:27:47,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:27:47,572 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:27:47,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:27:47,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:27:47,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:27:47,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:27:47,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:27:47,573 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:27:47,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:27:47,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:27:47,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:27:47,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:27:47,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:27:47,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:27:47,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:27:47,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:27:47,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:27:47,575 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:27:48,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:27:48,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:27:48,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:27:48,033 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:27:48,033 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:27:48,034 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i [2020-09-25 03:27:48,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6894fbf5f/0f36ba7d97c14b989818af032f0a8232/FLAG616cc2b75 [2020-09-25 03:27:48,661 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:27:48,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/id_build.i [2020-09-25 03:27:48,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6894fbf5f/0f36ba7d97c14b989818af032f0a8232/FLAG616cc2b75 [2020-09-25 03:27:49,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6894fbf5f/0f36ba7d97c14b989818af032f0a8232 [2020-09-25 03:27:49,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:27:49,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:27:49,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:27:49,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:27:49,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:27:49,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:27:49" (1/1) ... [2020-09-25 03:27:49,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a95ee96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:49, skipping insertion in model container [2020-09-25 03:27:49,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:27:49" (1/1) ... [2020-09-25 03:27:49,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:27:49,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:27:49,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:27:49,305 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:27:49,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:27:49,345 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:27:49,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:49 WrapperNode [2020-09-25 03:27:49,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:27:49,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:27:49,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:27:49,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:27:49,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:49" (1/1) ... [2020-09-25 03:27:49,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:49" (1/1) ... [2020-09-25 03:27:49,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:49" (1/1) ... [2020-09-25 03:27:49,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:49" (1/1) ... [2020-09-25 03:27:49,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:49" (1/1) ... [2020-09-25 03:27:49,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:49" (1/1) ... [2020-09-25 03:27:49,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:49" (1/1) ... [2020-09-25 03:27:49,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:27:49,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:27:49,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:27:49,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:27:49,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:49" (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 [2020-09-25 03:27:49,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:27:49,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:27:49,548 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 03:27:49,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:27:49,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:27:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:27:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:27:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 03:27:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:27:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:27:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:27:49,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:27:49,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:27:49,772 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:27:49,773 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 03:27:49,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:27:49 BoogieIcfgContainer [2020-09-25 03:27:49,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:27:49,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:27:49,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:27:49,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:27:49,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:27:49" (1/3) ... [2020-09-25 03:27:49,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a51d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:27:49, skipping insertion in model container [2020-09-25 03:27:49,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:49" (2/3) ... [2020-09-25 03:27:49,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a51d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:27:49, skipping insertion in model container [2020-09-25 03:27:49,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:27:49" (3/3) ... [2020-09-25 03:27:49,788 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i [2020-09-25 03:27:49,804 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:27:49,813 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:27:49,840 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:27:49,877 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:27:49,878 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:27:49,878 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:27:49,878 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:27:49,878 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:27:49,878 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:27:49,878 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:27:49,879 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:27:49,904 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-25 03:27:49,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 03:27:49,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:49,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:49,915 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:49,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:49,923 INFO L82 PathProgramCache]: Analyzing trace with hash 2141903635, now seen corresponding path program 1 times [2020-09-25 03:27:49,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:49,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205272971] [2020-09-25 03:27:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:50,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:50,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:50,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 03:27:50,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:50,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 03:27:50,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:50,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:27:50,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:27:50,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:27:50,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:27:50,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:50,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:50,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:50,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:50,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:50,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:27:50,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:50,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:50,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:50,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:50,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:50,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205272971] [2020-09-25 03:27:50,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:50,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:27:50,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564513736] [2020-09-25 03:27:50,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:27:50,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:50,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:27:50,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:27:50,314 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-09-25 03:27:50,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:50,419 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2020-09-25 03:27:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:27:50,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 03:27:50,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:50,433 INFO L225 Difference]: With dead ends: 60 [2020-09-25 03:27:50,433 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 03:27:50,438 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 [2020-09-25 03:27:50,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 03:27:50,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 03:27:50,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 03:27:50,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 03:27:50,498 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 19 [2020-09-25 03:27:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:50,499 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 03:27:50,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:27:50,500 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 03:27:50,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 03:27:50,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:50,501 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] [2020-09-25 03:27:50,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:27:50,502 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:50,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:50,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1520201371, now seen corresponding path program 1 times [2020-09-25 03:27:50,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:50,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61273980] [2020-09-25 03:27:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:50,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:50,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:50,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 03:27:50,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:50,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 03:27:50,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:27:50,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:27:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 03:27:50,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:50,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:50,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:50,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:50,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:50,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:50,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:27:50,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:50,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:50,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:50,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:50,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 03:27:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:50,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:50,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:50,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:50,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 03:27:50,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:50,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:50,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:50,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61273980] [2020-09-25 03:27:50,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:50,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:27:50,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014095286] [2020-09-25 03:27:50,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:27:50,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:50,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:27:50,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:27:50,766 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 5 states. [2020-09-25 03:27:50,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:50,822 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-09-25 03:27:50,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:27:50,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-25 03:27:50,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:50,826 INFO L225 Difference]: With dead ends: 49 [2020-09-25 03:27:50,826 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 03:27:50,827 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 [2020-09-25 03:27:50,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 03:27:50,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-09-25 03:27:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 03:27:50,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-09-25 03:27:50,845 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 24 [2020-09-25 03:27:50,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:50,845 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-09-25 03:27:50,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:27:50,846 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-09-25 03:27:50,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 03:27:50,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:50,849 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] [2020-09-25 03:27:50,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:27:50,849 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:50,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:50,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1589830701, now seen corresponding path program 1 times [2020-09-25 03:27:50,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:50,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287731255] [2020-09-25 03:27:50,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:50,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:51,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:51,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 03:27:51,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:51,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-09-25 03:27:51,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:27:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:27:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:27:51,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:27:51,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:51,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:51,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:51,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:51,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:27:51,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:51,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:27:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:51,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:51,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:51,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:51,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:27:51,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:51,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:51,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:51,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:51,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287731255] [2020-09-25 03:27:51,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:51,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:27:51,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789330765] [2020-09-25 03:27:51,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:27:51,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:51,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:27:51,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:27:51,278 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 7 states. [2020-09-25 03:27:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:51,375 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-09-25 03:27:51,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:27:51,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-09-25 03:27:51,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:51,377 INFO L225 Difference]: With dead ends: 47 [2020-09-25 03:27:51,377 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 03:27:51,378 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 [2020-09-25 03:27:51,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 03:27:51,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 03:27:51,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 03:27:51,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 03:27:51,379 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-09-25 03:27:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:51,379 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 03:27:51,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:27:51,380 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 03:27:51,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 03:27:51,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:27:51,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 03:27:51,485 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 03:27:51,485 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:27:51,485 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:27:51,485 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 03:27:51,486 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 03:27:51,486 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 03:27:51,486 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 03:27:51,486 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 03:27:51,486 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 03:27:51,486 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 03:27:51,487 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 03:27:51,487 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 23) no Hoare annotation was computed. [2020-09-25 03:27:51,487 INFO L268 CegarLoopResult]: For program point L19(lines 17 20) no Hoare annotation was computed. [2020-09-25 03:27:51,487 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 03:27:51,487 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 03:27:51,488 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 03:27:51,488 INFO L268 CegarLoopResult]: For program point L17-3(line 17) no Hoare annotation was computed. [2020-09-25 03:27:51,488 INFO L268 CegarLoopResult]: For program point L17-4(line 17) no Hoare annotation was computed. [2020-09-25 03:27:51,488 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 23) no Hoare annotation was computed. [2020-09-25 03:27:51,488 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)) [2020-09-25 03:27:51,488 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 23) the Hoare annotation is: true [2020-09-25 03:27:51,489 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (<= 0 main_~i~0) (< main_~i~0 main_~nlen~0)) [2020-09-25 03:27:51,489 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)) [2020-09-25 03:27:51,489 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 03:27:51,489 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 03:27:51,489 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 03:27:51,490 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 21) no Hoare annotation was computed. [2020-09-25 03:27:51,490 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 03:27:51,490 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-25 03:27:51,490 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-25 03:27:51,490 INFO L268 CegarLoopResult]: For program point L16-5(line 16) no Hoare annotation was computed. [2020-09-25 03:27:51,491 INFO L264 CegarLoopResult]: At program point L16-6(lines 16 21) the Hoare annotation is: (<= 0 main_~i~0) [2020-09-25 03:27:51,491 INFO L268 CegarLoopResult]: For program point L16-7(lines 16 21) no Hoare annotation was computed. [2020-09-25 03:27:51,491 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 03:27:51,491 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 03:27:51,491 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 03:27:51,491 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 03:27:51,492 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 03:27:51,492 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 03:27:51,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:27:51 BoogieIcfgContainer [2020-09-25 03:27:51,514 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:27:51,518 INFO L168 Benchmark]: Toolchain (without parser) took 2496.04 ms. Allocated memory was 141.0 MB in the beginning and 233.3 MB in the end (delta: 92.3 MB). Free memory was 103.0 MB in the beginning and 173.5 MB in the end (delta: -70.5 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-25 03:27:51,518 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:27:51,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.37 ms. Allocated memory is still 141.0 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 03:27:51,521 INFO L168 Benchmark]: Boogie Preprocessor took 115.55 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.9 MB in the beginning and 184.5 MB in the end (delta: -91.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:27:51,521 INFO L168 Benchmark]: RCFGBuilder took 315.74 ms. Allocated memory is still 204.5 MB. Free memory was 184.5 MB in the beginning and 170.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:27:51,523 INFO L168 Benchmark]: TraceAbstraction took 1734.01 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 169.3 MB in the beginning and 173.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:27:51,527 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.37 ms. Allocated memory is still 141.0 MB. Free memory was 102.5 MB in the beginning and 92.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.55 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.9 MB in the beginning and 184.5 MB in the end (delta: -91.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 315.74 ms. Allocated memory is still 204.5 MB. Free memory was 184.5 MB in the beginning and 170.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1734.01 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 169.3 MB in the beginning and 173.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 24.7 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: 1.5s, 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, 0.8s 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...