/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=HIGHLEXORDER --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/test26-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:44:16,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:44:16,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:44:16,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:44:16,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:44:16,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:44:16,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:44:16,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:44:16,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:44:16,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:44:16,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:44:16,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:44:16,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:44:16,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:44:16,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:44:16,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:44:16,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:44:16,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:44:16,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:44:16,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:44:16,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:44:16,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:44:16,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:44:16,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:44:16,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:44:16,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:44:16,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:44:16,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:44:16,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:44:16,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 22:44:16,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:44:16,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:44:16,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:44:16,548 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 22:44:16,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:44:16,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:44:16,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:44:16,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:44:16,575 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:44:16,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:44:16,576 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:44:16,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:44:16,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:44:16,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:44:16,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:44:16,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:44:16,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:44:16,581 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:44:16,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:44:16,581 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:44:16,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:44:16,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:44:16,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:44:16,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:44:16,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:44:16,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:44:16,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:44:16,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:44:16,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:44:16,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:44:16,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:44:16,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:44:16,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:44:16,586 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:44:17,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:44:17,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:44:17,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:44:17,150 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:44:17,152 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:44:17,153 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test26-1.c [2020-09-24 22:44:17,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbe8c40d4/19fbb0a4d90d4e23bd5f2f6d18b37498/FLAGda7b537ef [2020-09-24 22:44:17,818 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:44:17,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test26-1.c [2020-09-24 22:44:17,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbe8c40d4/19fbb0a4d90d4e23bd5f2f6d18b37498/FLAGda7b537ef [2020-09-24 22:44:18,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbe8c40d4/19fbb0a4d90d4e23bd5f2f6d18b37498 [2020-09-24 22:44:18,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:44:18,190 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:44:18,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:44:18,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:44:18,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:44:18,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:44:18" (1/1) ... [2020-09-24 22:44:18,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ba14b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:18, skipping insertion in model container [2020-09-24 22:44:18,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:44:18" (1/1) ... [2020-09-24 22:44:18,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:44:18,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:44:18,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:44:18,579 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:44:18,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:44:18,625 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:44:18,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:18 WrapperNode [2020-09-24 22:44:18,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:44:18,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:44:18,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:44:18,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:44:18,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:18" (1/1) ... [2020-09-24 22:44:18,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:18" (1/1) ... [2020-09-24 22:44:18,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:18" (1/1) ... [2020-09-24 22:44:18,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:18" (1/1) ... [2020-09-24 22:44:18,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:18" (1/1) ... [2020-09-24 22:44:18,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:18" (1/1) ... [2020-09-24 22:44:18,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:18" (1/1) ... [2020-09-24 22:44:18,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:44:18,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:44:18,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:44:18,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:44:18,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:18" (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 22:44:18,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:44:18,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:44:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-09-24 22:44:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:44:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:44:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-09-24 22:44:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:44:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:44:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:44:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:44:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:44:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 22:44:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:44:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:44:19,099 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:44:19,099 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:44:19,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:44:19 BoogieIcfgContainer [2020-09-24 22:44:19,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:44:19,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:44:19,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:44:19,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:44:19,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:44:18" (1/3) ... [2020-09-24 22:44:19,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca1c2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:44:19, skipping insertion in model container [2020-09-24 22:44:19,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:18" (2/3) ... [2020-09-24 22:44:19,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca1c2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:44:19, skipping insertion in model container [2020-09-24 22:44:19,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:44:19" (3/3) ... [2020-09-24 22:44:19,116 INFO L109 eAbstractionObserver]: Analyzing ICFG test26-1.c [2020-09-24 22:44:19,129 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:44:19,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:44:19,165 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:44:19,216 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:44:19,216 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:44:19,216 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:44:19,217 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:44:19,217 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:44:19,217 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:44:19,217 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:44:19,218 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:44:19,248 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-24 22:44:19,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 22:44:19,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:19,259 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] [2020-09-24 22:44:19,259 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:19,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:19,268 INFO L82 PathProgramCache]: Analyzing trace with hash 584275181, now seen corresponding path program 1 times [2020-09-24 22:44:19,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:19,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338176771] [2020-09-24 22:44:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:19,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:20,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:20,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:44:20,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:20,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-09-24 22:44:20,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:44:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 22:44:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 22:44:20,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 22:44:20,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:20,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:20,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:20,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:44:20,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:20,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:44:20,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:20,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:20,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:44:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:20,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:20,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:20,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:44:20,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:20,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-24 22:44:20,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:20,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:44:20,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:20,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 22:44:20,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:20,691 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 22:44:20,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338176771] [2020-09-24 22:44:20,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:44:20,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 22:44:20,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403213644] [2020-09-24 22:44:20,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 22:44:20,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:20,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 22:44:20,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:44:20,730 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 12 states. [2020-09-24 22:44:21,199 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-09-24 22:44:21,331 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-09-24 22:44:21,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:21,699 INFO L93 Difference]: Finished difference Result 38 states and 37 transitions. [2020-09-24 22:44:21,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 22:44:21,701 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-09-24 22:44:21,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:21,711 INFO L225 Difference]: With dead ends: 38 [2020-09-24 22:44:21,711 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 22:44:21,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2020-09-24 22:44:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 22:44:21,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 22:44:21,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 22:44:21,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 22:44:21,752 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-09-24 22:44:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:21,753 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 22:44:21,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 22:44:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 22:44:21,753 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 22:44:21,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:44:21,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 22:44:21,875 INFO L268 CegarLoopResult]: For program point L3-2(lines 3 5) no Hoare annotation was computed. [2020-09-24 22:44:21,875 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 22:44:21,875 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 22:44:21,876 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(lines 3 5) no Hoare annotation was computed. [2020-09-24 22:44:21,876 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |~#global~0.base| |old(~#global~0.base)|) (= |old(#length)| |#length|) (= |~#global~0.offset| |old(~#global~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 22:44:21,876 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed. [2020-09-24 22:44:21,877 INFO L268 CegarLoopResult]: For program point L3-1(lines 3 5) no Hoare annotation was computed. [2020-09-24 22:44:21,877 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 22:44:21,877 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 22:44:21,877 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 22:44:21,877 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 22:44:21,877 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 22:44:21,878 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 24) no Hoare annotation was computed. [2020-09-24 22:44:21,878 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 26) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-24 22:44:21,878 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 22:44:21,878 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 26) no Hoare annotation was computed. [2020-09-24 22:44:21,879 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 22:44:21,879 INFO L264 CegarLoopResult]: At program point L19(lines 13 26) the Hoare annotation is: false [2020-09-24 22:44:21,879 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 22:44:21,879 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 20) no Hoare annotation was computed. [2020-09-24 22:44:21,879 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (<= main_~pd~0.offset |~#global~0.offset|) (= |#memory_int| |old(#memory_int)|) (<= |~#global~0.offset| main_~pd~0.offset) (= |~#global~0.base| main_~pd~0.base)) [2020-09-24 22:44:21,880 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 22:44:21,880 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 22:44:21,880 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-09-24 22:44:21,880 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-24 22:44:21,880 INFO L268 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed. [2020-09-24 22:44:21,880 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 26) no Hoare annotation was computed. [2020-09-24 22:44:21,881 INFO L268 CegarLoopResult]: For program point assignEXIT(lines 7 10) no Hoare annotation was computed. [2020-09-24 22:44:21,881 INFO L264 CegarLoopResult]: At program point assignENTRY(lines 7 10) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-24 22:44:21,881 INFO L268 CegarLoopResult]: For program point assignFINAL(lines 7 10) no Hoare annotation was computed. [2020-09-24 22:44:21,881 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 22:44:21,881 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 22:44:21,882 INFO L268 CegarLoopResult]: For program point L7(lines 7 10) no Hoare annotation was computed. [2020-09-24 22:44:21,882 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 22:44:21,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:44:21 BoogieIcfgContainer [2020-09-24 22:44:21,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:44:21,900 INFO L168 Benchmark]: Toolchain (without parser) took 3715.32 ms. Allocated memory was 140.5 MB in the beginning and 245.4 MB in the end (delta: 104.9 MB). Free memory was 102.6 MB in the beginning and 197.6 MB in the end (delta: -95.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-24 22:44:21,901 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 22:44:21,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.20 ms. Allocated memory is still 140.5 MB. Free memory was 101.9 MB in the beginning and 92.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 22:44:21,903 INFO L168 Benchmark]: Boogie Preprocessor took 136.06 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 92.1 MB in the beginning and 179.9 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-24 22:44:21,904 INFO L168 Benchmark]: RCFGBuilder took 340.59 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 165.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:44:21,906 INFO L168 Benchmark]: TraceAbstraction took 2791.36 ms. Allocated memory was 202.4 MB in the beginning and 245.4 MB in the end (delta: 43.0 MB). Free memory was 165.0 MB in the beginning and 197.6 MB in the end (delta: -32.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:44:21,910 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 436.20 ms. Allocated memory is still 140.5 MB. Free memory was 101.9 MB in the beginning and 92.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.06 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 92.1 MB in the beginning and 179.9 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.59 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 165.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2791.36 ms. Allocated memory was 202.4 MB in the beginning and 245.4 MB in the end (delta: 43.0 MB). Free memory was 165.0 MB in the beginning and 197.6 MB in the end (delta: -32.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: 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: 13]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 48 SDslu, 30 SDs, 0 SdLazy, 167 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 41 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 59 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 4656 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...