/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:23:37,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:23:37,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:23:37,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:23:37,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:23:37,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:23:37,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:23:37,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:23:37,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:23:37,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:23:37,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:23:37,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:23:37,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:23:37,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:23:38,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:23:38,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:23:38,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:23:38,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:23:38,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:23:38,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:23:38,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:23:38,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:23:38,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:23:38,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:23:38,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:23:38,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:23:38,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:23:38,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:23:38,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:23:38,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:23:38,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:23:38,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:23:38,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:23:38,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:23:38,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:23:38,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:23:38,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:23:38,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:23:38,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:23:38,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:23:38,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:23:38,060 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 19:23:38,112 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:23:38,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:23:38,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:23:38,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:23:38,115 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:23:38,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:23:38,116 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:23:38,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:23:38,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:23:38,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:23:38,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:23:38,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:23:38,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:23:38,119 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:23:38,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:23:38,119 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:23:38,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:23:38,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:23:38,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:23:38,120 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:23:38,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:23:38,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:23:38,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:23:38,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:23:38,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:23:38,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:23:38,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:23:38,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:23:38,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:23:38,123 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:23:38,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:23:38,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:23:38,574 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:23:38,576 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:23:38,577 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:23:38,578 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test15.c [2020-09-24 19:23:38,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7035ba2fe/6cc46f307f904d8f83aabd929647622a/FLAG0a6121b42 [2020-09-24 19:23:39,218 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:23:39,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test15.c [2020-09-24 19:23:39,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7035ba2fe/6cc46f307f904d8f83aabd929647622a/FLAG0a6121b42 [2020-09-24 19:23:39,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7035ba2fe/6cc46f307f904d8f83aabd929647622a [2020-09-24 19:23:39,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:23:39,617 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:23:39,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:23:39,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:23:39,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:23:39,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:23:39" (1/1) ... [2020-09-24 19:23:39,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa107a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:39, skipping insertion in model container [2020-09-24 19:23:39,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:23:39" (1/1) ... [2020-09-24 19:23:39,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:23:39,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:23:39,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:23:39,940 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:23:39,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:23:39,973 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:23:39,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:39 WrapperNode [2020-09-24 19:23:39,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:23:39,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:23:39,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:23:39,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:23:40,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:39" (1/1) ... [2020-09-24 19:23:40,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:39" (1/1) ... [2020-09-24 19:23:40,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:39" (1/1) ... [2020-09-24 19:23:40,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:39" (1/1) ... [2020-09-24 19:23:40,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:39" (1/1) ... [2020-09-24 19:23:40,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:39" (1/1) ... [2020-09-24 19:23:40,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:39" (1/1) ... [2020-09-24 19:23:40,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:23:40,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:23:40,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:23:40,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:23:40,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:39" (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 19:23:40,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:23:40,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:23:40,168 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-09-24 19:23:40,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:23:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:23:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:23:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-09-24 19:23:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:23:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:23:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:23:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:23:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:23:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:23:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:23:40,460 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:23:40,461 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 19:23:40,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:23:40 BoogieIcfgContainer [2020-09-24 19:23:40,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:23:40,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:23:40,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:23:40,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:23:40,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:23:39" (1/3) ... [2020-09-24 19:23:40,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d4f0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:23:40, skipping insertion in model container [2020-09-24 19:23:40,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:23:39" (2/3) ... [2020-09-24 19:23:40,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d4f0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:23:40, skipping insertion in model container [2020-09-24 19:23:40,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:23:40" (3/3) ... [2020-09-24 19:23:40,494 INFO L109 eAbstractionObserver]: Analyzing ICFG test15.c [2020-09-24 19:23:40,504 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:23:40,514 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:23:40,535 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:23:40,568 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:23:40,569 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:23:40,569 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:23:40,569 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:23:40,569 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:23:40,570 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:23:40,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:23:40,570 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:23:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-24 19:23:40,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 19:23:40,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:23:40,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:23:40,603 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:23:40,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:23:40,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1875144090, now seen corresponding path program 1 times [2020-09-24 19:23:40,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:23:40,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685165110] [2020-09-24 19:23:40,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:23:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:23:40,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:23:41,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:23:41,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 19:23:41,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:23:41,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-09-24 19:23:41,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:23:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 19:23:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 19:23:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 19:23:41,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:23:41,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:23:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:23:41,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:23:41,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:23:41,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:23:41,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:23:41,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:23:41,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:23:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:23:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:23:41,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:23:41,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:23:41,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 19:23:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:23:41,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:23:41,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:23:41,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:23:41,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:23:41,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 19:23:41,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:23:41,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:23:41,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:23:41,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:23:41,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:23:41,849 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 19:23:41,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685165110] [2020-09-24 19:23:41,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:23:41,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 19:23:41,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020362674] [2020-09-24 19:23:41,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 19:23:41,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:23:41,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 19:23:41,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:23:41,889 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 11 states. [2020-09-24 19:23:42,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:23:42,521 INFO L93 Difference]: Finished difference Result 47 states and 46 transitions. [2020-09-24 19:23:42,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:23:42,523 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-09-24 19:23:42,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:23:42,533 INFO L225 Difference]: With dead ends: 47 [2020-09-24 19:23:42,533 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:23:42,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2020-09-24 19:23:42,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:23:42,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:23:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:23:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:23:42,571 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-09-24 19:23:42,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:23:42,572 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:23:42,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 19:23:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:23:42,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:23:42,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:23:42,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:23:42,664 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 19:23:42,665 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 19:23:42,665 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:23:42,665 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 19:23:42,666 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:23:42,666 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:23:42,666 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 19:23:42,666 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 19:23:42,666 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:23:42,667 INFO L268 CegarLoopResult]: For program point L10-9(line 10) no Hoare annotation was computed. [2020-09-24 19:23:42,667 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 21) no Hoare annotation was computed. [2020-09-24 19:23:42,667 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 19:23:42,667 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 19:23:42,667 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 9 21) no Hoare annotation was computed. [2020-09-24 19:23:42,667 INFO L268 CegarLoopResult]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2020-09-24 19:23:42,668 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 19:23:42,668 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-24 19:23:42,668 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-24 19:23:42,668 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-24 19:23:42,668 INFO L268 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-09-24 19:23:42,669 INFO L268 CegarLoopResult]: For program point L13-5(line 13) no Hoare annotation was computed. [2020-09-24 19:23:42,669 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-09-24 19:23:42,669 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 9 21) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 19:23:42,669 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 19:23:42,669 INFO L264 CegarLoopResult]: At program point L14(lines 9 21) the Hoare annotation is: false [2020-09-24 19:23:42,670 INFO L271 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-09-24 19:23:42,670 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 19:23:42,670 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 19:23:42,670 INFO L268 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-09-24 19:23:42,670 INFO L268 CegarLoopResult]: For program point L10-2(line 10) no Hoare annotation was computed. [2020-09-24 19:23:42,670 INFO L268 CegarLoopResult]: For program point L10-3(line 10) no Hoare annotation was computed. [2020-09-24 19:23:42,671 INFO L268 CegarLoopResult]: For program point L10-4(line 10) no Hoare annotation was computed. [2020-09-24 19:23:42,671 INFO L268 CegarLoopResult]: For program point L10-5(line 10) no Hoare annotation was computed. [2020-09-24 19:23:42,671 INFO L268 CegarLoopResult]: For program point L10-6(line 10) no Hoare annotation was computed. [2020-09-24 19:23:42,671 INFO L268 CegarLoopResult]: For program point L10-7(line 10) no Hoare annotation was computed. [2020-09-24 19:23:42,671 INFO L268 CegarLoopResult]: For program point L10-8(line 10) no Hoare annotation was computed. [2020-09-24 19:23:42,671 INFO L268 CegarLoopResult]: For program point assignEXIT(lines 5 7) no Hoare annotation was computed. [2020-09-24 19:23:42,672 INFO L264 CegarLoopResult]: At program point assignENTRY(lines 5 7) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-24 19:23:42,672 INFO L268 CegarLoopResult]: For program point assignFINAL(lines 5 7) no Hoare annotation was computed. [2020-09-24 19:23:42,672 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 19:23:42,672 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-09-24 19:23:42,672 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 19:23:42,673 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-09-24 19:23:42,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:23:42 BoogieIcfgContainer [2020-09-24 19:23:42,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:23:42,690 INFO L168 Benchmark]: Toolchain (without parser) took 3075.14 ms. Allocated memory was 141.0 MB in the beginning and 232.8 MB in the end (delta: 91.8 MB). Free memory was 104.2 MB in the beginning and 122.3 MB in the end (delta: -18.1 MB). Peak memory consumption was 73.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:23:42,693 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:23:42,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.19 ms. Allocated memory is still 141.0 MB. Free memory was 103.6 MB in the beginning and 94.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-24 19:23:42,696 INFO L168 Benchmark]: Boogie Preprocessor took 117.33 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 94.2 MB in the beginning and 182.5 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 19:23:42,697 INFO L168 Benchmark]: RCFGBuilder took 374.01 ms. Allocated memory is still 203.9 MB. Free memory was 182.5 MB in the beginning and 166.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-09-24 19:23:42,698 INFO L168 Benchmark]: TraceAbstraction took 2209.53 ms. Allocated memory was 203.9 MB in the beginning and 232.8 MB in the end (delta: 28.8 MB). Free memory was 166.1 MB in the beginning and 122.3 MB in the end (delta: 43.8 MB). Peak memory consumption was 72.6 MB. Max. memory is 7.1 GB. [2020-09-24 19:23:42,702 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 356.19 ms. Allocated memory is still 141.0 MB. Free memory was 103.6 MB in the beginning and 94.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.33 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 94.2 MB in the beginning and 182.5 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 374.01 ms. Allocated memory is still 203.9 MB. Free memory was 182.5 MB in the beginning and 166.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2209.53 ms. Allocated memory was 203.9 MB in the beginning and 232.8 MB in the end (delta: 28.8 MB). Free memory was 166.1 MB in the beginning and 122.3 MB in the end (delta: 43.8 MB). Peak memory consumption was 72.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 9]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 32 SDslu, 103 SDs, 0 SdLazy, 151 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 24 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 4275 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 correct! Received shutdown request...