/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/phases_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:19:28,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:19:28,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:19:28,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:19:28,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:19:28,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:19:28,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:19:28,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:19:28,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:19:28,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:19:28,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:19:28,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:19:28,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:19:28,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:19:28,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:19:28,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:19:28,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:19:28,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:19:28,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:19:28,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:19:28,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:19:28,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:19:28,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:19:28,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:19:28,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:19:28,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:19:28,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:19:28,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:19:28,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:19:28,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:19:28,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:19:28,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:19:28,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:19:28,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:19:28,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:19:28,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:19:28,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:19:28,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:19:28,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:19:28,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:19:28,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:19:28,495 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 02:19:28,540 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:19:28,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:19:28,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:19:28,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:19:28,543 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:19:28,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:19:28,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:19:28,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:19:28,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:19:28,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:19:28,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:19:28,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:19:28,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:19:28,546 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:19:28,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:19:28,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:19:28,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:19:28,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:19:28,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:19:28,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:19:28,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:19:28,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:19:28,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:19:28,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:19:28,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:19:28,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:19:28,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:19:28,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:19:28,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:19:28,550 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:19:29,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:19:29,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:19:29,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:19:29,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:19:29,025 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:19:29,027 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-1.c [2020-09-25 02:19:29,120 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a6a49375/269d2a7893b2415eaf2581f3b87d4fdf/FLAGc1e98fd5d [2020-09-25 02:19:29,650 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:19:29,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/phases_2-1.c [2020-09-25 02:19:29,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a6a49375/269d2a7893b2415eaf2581f3b87d4fdf/FLAGc1e98fd5d [2020-09-25 02:19:29,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a6a49375/269d2a7893b2415eaf2581f3b87d4fdf [2020-09-25 02:19:30,008 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:19:30,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:19:30,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:30,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:19:30,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:19:30,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:29" (1/1) ... [2020-09-25 02:19:30,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:30, skipping insertion in model container [2020-09-25 02:19:30,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:29" (1/1) ... [2020-09-25 02:19:30,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:19:30,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:19:30,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:30,282 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:19:30,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:30,321 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:19:30,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:30 WrapperNode [2020-09-25 02:19:30,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:30,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:19:30,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:19:30,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:19:30,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:30" (1/1) ... [2020-09-25 02:19:30,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:30" (1/1) ... [2020-09-25 02:19:30,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:30" (1/1) ... [2020-09-25 02:19:30,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:30" (1/1) ... [2020-09-25 02:19:30,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:30" (1/1) ... [2020-09-25 02:19:30,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:30" (1/1) ... [2020-09-25 02:19:30,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:30" (1/1) ... [2020-09-25 02:19:30,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:19:30,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:19:30,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:19:30,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:19:30,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:30" (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 02:19:30,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:19:30,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:19:30,517 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:19:30,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:19:30,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:19:30,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:19:30,518 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:19:30,518 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:19:30,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 02:19:30,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:19:30,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:19:30,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:19:30,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:19:30,740 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:19:30,741 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:19:30,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:30 BoogieIcfgContainer [2020-09-25 02:19:30,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:19:30,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:19:30,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:19:30,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:19:30,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:19:29" (1/3) ... [2020-09-25 02:19:30,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f281d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:30, skipping insertion in model container [2020-09-25 02:19:30,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:30" (2/3) ... [2020-09-25 02:19:30,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f281d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:30, skipping insertion in model container [2020-09-25 02:19:30,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:30" (3/3) ... [2020-09-25 02:19:30,758 INFO L109 eAbstractionObserver]: Analyzing ICFG phases_2-1.c [2020-09-25 02:19:30,778 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:19:30,788 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:19:30,815 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:19:30,852 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:19:30,854 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:19:30,854 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:19:30,854 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:19:30,855 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:19:30,855 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:19:30,855 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:19:30,855 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:19:30,885 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-09-25 02:19:30,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-25 02:19:30,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:30,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:30,900 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:30,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:30,911 INFO L82 PathProgramCache]: Analyzing trace with hash 31250732, now seen corresponding path program 1 times [2020-09-25 02:19:30,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:30,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708660312] [2020-09-25 02:19:30,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:31,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:31,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:31,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:19:31,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:31,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 02:19:31,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 02:19:31,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:31,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:19:31,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:31,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:31,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:31,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:19:31,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:31,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:19:31,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:31,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:31,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:19:31,166 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 02:19:31,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708660312] [2020-09-25 02:19:31,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:31,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 02:19:31,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645393395] [2020-09-25 02:19:31,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 02:19:31,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:31,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 02:19:31,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 02:19:31,199 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-09-25 02:19:31,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:31,227 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-09-25 02:19:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 02:19:31,228 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-09-25 02:19:31,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:31,238 INFO L225 Difference]: With dead ends: 37 [2020-09-25 02:19:31,238 INFO L226 Difference]: Without dead ends: 19 [2020-09-25 02:19:31,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 02:19:31,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-25 02:19:31,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-09-25 02:19:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-25 02:19:31,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-09-25 02:19:31,283 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2020-09-25 02:19:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:31,283 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-09-25 02:19:31,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 02:19:31,283 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-09-25 02:19:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-25 02:19:31,284 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:31,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:31,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:19:31,285 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:31,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:31,286 INFO L82 PathProgramCache]: Analyzing trace with hash 18321438, now seen corresponding path program 1 times [2020-09-25 02:19:31,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:31,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474611053] [2020-09-25 02:19:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:19:31,310 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:19:31,310 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:19:31,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:19:31,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:19:31 BoogieIcfgContainer [2020-09-25 02:19:31,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:19:31,335 INFO L168 Benchmark]: Toolchain (without parser) took 1324.83 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 104.3 MB in the beginning and 144.8 MB in the end (delta: -40.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:31,337 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 02:19:31,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.99 ms. Allocated memory is still 141.6 MB. Free memory was 103.6 MB in the beginning and 94.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:31,339 INFO L168 Benchmark]: Boogie Preprocessor took 113.41 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.1 MB in the beginning and 183.1 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:31,340 INFO L168 Benchmark]: RCFGBuilder took 310.66 ms. Allocated memory is still 204.5 MB. Free memory was 182.7 MB in the beginning and 170.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:31,343 INFO L168 Benchmark]: TraceAbstraction took 583.71 ms. Allocated memory is still 204.5 MB. Free memory was 169.5 MB in the beginning and 144.8 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:31,350 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 306.99 ms. Allocated memory is still 141.6 MB. Free memory was 103.6 MB in the beginning and 94.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.41 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.1 MB in the beginning and 183.1 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 310.66 ms. Allocated memory is still 204.5 MB. Free memory was 182.7 MB in the beginning and 170.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 583.71 ms. Allocated memory is still 204.5 MB. Free memory was 169.5 MB in the beginning and 144.8 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] unsigned int x = 1; [L17] unsigned int y = __VERIFIER_nondet_uint(); [L19] COND FALSE !(!(y > 0)) [L21] COND FALSE !(x < y) [L29] CALL __VERIFIER_assert(x != y) [L9] COND TRUE !(cond) [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...