/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-regression/test13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:14:05,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:14:05,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:14:05,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:14:05,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:14:05,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:14:05,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:14:05,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:14:05,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:14:05,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:14:05,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:14:05,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:14:05,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:14:05,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:14:05,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:14:05,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:14:05,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:14:05,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:14:05,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:14:05,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:14:05,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:14:05,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:14:05,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:14:05,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:14:05,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:14:05,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:14:05,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:14:05,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:14:05,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:14:05,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 01:14:05,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:14:05,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:14:05,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:14:05,263 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 [2020-10-27 01:14:05,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:14:05,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:14:05,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:14:05,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:14:05,291 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:14:05,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:14:05,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:14:05,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:14:05,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:14:05,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:14:05,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:14:05,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:14:05,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:14:05,293 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:14:05,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:14:05,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:14:05,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:14:05,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:14:05,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:14:05,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:14:05,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:14:05,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:14:05,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:14:05,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:14:05,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:14:05,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:14:05,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:14:05,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:14:05,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:14:05,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:14:05,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:14:05,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:14:05,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:14:05,801 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:14:05,802 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:14:05,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test13.c [2020-10-27 01:14:05,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7419651d/177901062776486e9b39e14b4698a94e/FLAGb117746d9 [2020-10-27 01:14:06,519 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:14:06,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test13.c [2020-10-27 01:14:06,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7419651d/177901062776486e9b39e14b4698a94e/FLAGb117746d9 [2020-10-27 01:14:06,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7419651d/177901062776486e9b39e14b4698a94e [2020-10-27 01:14:06,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:14:06,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:14:06,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:14:06,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:14:06,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:14:06,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:14:06" (1/1) ... [2020-10-27 01:14:06,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c45fe72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:06, skipping insertion in model container [2020-10-27 01:14:06,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:14:06" (1/1) ... [2020-10-27 01:14:06,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:14:06,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:14:07,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:14:07,096 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:14:07,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:14:07,129 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:14:07,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:07 WrapperNode [2020-10-27 01:14:07,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:14:07,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:14:07,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:14:07,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:14:07,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:07" (1/1) ... [2020-10-27 01:14:07,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:07" (1/1) ... [2020-10-27 01:14:07,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:07" (1/1) ... [2020-10-27 01:14:07,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:07" (1/1) ... [2020-10-27 01:14:07,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:07" (1/1) ... [2020-10-27 01:14:07,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:07" (1/1) ... [2020-10-27 01:14:07,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:07" (1/1) ... [2020-10-27 01:14:07,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:14:07,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:14:07,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:14:07,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:14:07,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:07" (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 [2020-10-27 01:14:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:14:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:14:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:14:07,249 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 01:14:07,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:14:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:14:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:14:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:14:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:14:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 01:14:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:14:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:14:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:14:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:14:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:14:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:14:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:14:07,526 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:14:07,526 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 01:14:07,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:14:07 BoogieIcfgContainer [2020-10-27 01:14:07,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:14:07,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:14:07,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:14:07,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:14:07,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:14:06" (1/3) ... [2020-10-27 01:14:07,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403f57fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:14:07, skipping insertion in model container [2020-10-27 01:14:07,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:14:07" (2/3) ... [2020-10-27 01:14:07,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403f57fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:14:07, skipping insertion in model container [2020-10-27 01:14:07,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:14:07" (3/3) ... [2020-10-27 01:14:07,537 INFO L111 eAbstractionObserver]: Analyzing ICFG test13.c [2020-10-27 01:14:07,548 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:14:07,553 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:14:07,567 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:14:07,594 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:14:07,595 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:14:07,595 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:14:07,595 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:14:07,595 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:14:07,595 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:14:07,595 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:14:07,596 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:14:07,612 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-27 01:14:07,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-27 01:14:07,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:14:07,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:14:07,618 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:14:07,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:14:07,624 INFO L82 PathProgramCache]: Analyzing trace with hash -2068287604, now seen corresponding path program 1 times [2020-10-27 01:14:07,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:14:07,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830940509] [2020-10-27 01:14:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:14:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:08,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:08,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:14:08,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:08,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-27 01:14:08,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:14:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 01:14:08,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:14:08,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:14:08,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:14:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:14:08,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:14:08,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:14:08,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:14:08,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:14:08,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 01:14:08,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:14:08,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:14:08,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:14:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:14:08,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:14:08,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:14:08,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830940509] [2020-10-27 01:14:08,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:14:08,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:14:08,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242912146] [2020-10-27 01:14:08,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:14:08,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:14:08,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:14:08,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:14:08,589 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2020-10-27 01:14:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:14:08,964 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-10-27 01:14:08,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:14:08,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-27 01:14:08,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:14:08,974 INFO L225 Difference]: With dead ends: 28 [2020-10-27 01:14:08,974 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 01:14:08,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:14:08,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 01:14:09,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 01:14:09,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 01:14:09,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 01:14:09,009 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-27 01:14:09,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:14:09,009 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 01:14:09,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:14:09,010 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 01:14:09,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 01:14:09,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:14:09,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 01:14:09,179 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 01:14:09,180 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 01:14:09,180 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 01:14:09,180 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 01:14:09,180 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:14:09,181 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~pa~0.base |old(~pa~0.base)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~pb~0.base |old(~pb~0.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-27 01:14:09,181 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:14:09,181 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:14:09,182 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) [2020-10-27 01:14:09,182 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 01:14:09,182 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:14:09,182 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 19 22) the Hoare annotation is: true [2020-10-27 01:14:09,183 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 19 22) no Hoare annotation was computed. [2020-10-27 01:14:09,183 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 19 22) no Hoare annotation was computed. [2020-10-27 01:14:09,183 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-10-27 01:14:09,183 INFO L277 CegarLoopResult]: At program point checkENTRY(lines 6 14) the Hoare annotation is: true [2020-10-27 01:14:09,183 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-27 01:14:09,184 INFO L270 CegarLoopResult]: At program point L8(lines 6 14) the Hoare annotation is: (or (not (= |~#a~0.offset| ~pa~0.offset)) (not (= |~#a~0.base| ~pa~0.base)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= |check_#in~a.base| |check_#in~b.base|))) [2020-10-27 01:14:09,184 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-27 01:14:09,184 INFO L274 CegarLoopResult]: For program point checkFINAL(lines 6 14) no Hoare annotation was computed. [2020-10-27 01:14:09,184 INFO L274 CegarLoopResult]: For program point checkEXIT(lines 6 14) no Hoare annotation was computed. [2020-10-27 01:14:09,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:14:09 BoogieIcfgContainer [2020-10-27 01:14:09,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:14:09,207 INFO L168 Benchmark]: Toolchain (without parser) took 2314.26 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 136.8 MB in the beginning and 161.9 MB in the end (delta: -25.2 MB). Peak memory consumption was 85.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:14:09,208 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 160.4 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:14:09,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.91 ms. Allocated memory is still 160.4 MB. Free memory was 136.1 MB in the beginning and 127.3 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:14:09,210 INFO L168 Benchmark]: Boogie Preprocessor took 34.36 ms. Allocated memory is still 160.4 MB. Free memory was 127.3 MB in the beginning and 125.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:14:09,211 INFO L168 Benchmark]: RCFGBuilder took 362.38 ms. Allocated memory is still 160.4 MB. Free memory was 125.8 MB in the beginning and 112.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:14:09,213 INFO L168 Benchmark]: TraceAbstraction took 1673.93 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 112.3 MB in the beginning and 161.9 MB in the end (delta: -49.6 MB). Peak memory consumption was 60.9 MB. Max. memory is 8.0 GB. [2020-10-27 01:14:09,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 160.4 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 231.91 ms. Allocated memory is still 160.4 MB. Free memory was 136.1 MB in the beginning and 127.3 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.36 ms. Allocated memory is still 160.4 MB. Free memory was 127.3 MB in the beginning and 125.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 362.38 ms. Allocated memory is still 160.4 MB. Free memory was 125.8 MB in the beginning and 112.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1673.93 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 112.3 MB in the beginning and 161.9 MB in the end (delta: -49.6 MB). Peak memory consumption was 60.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 6]: Loop Invariant Derived loop invariant: ((!(a == pa) || !(a == pa)) || !(b == a)) || !(a == b) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 16 SDslu, 14 SDs, 0 SdLazy, 18 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 83 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 152 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 891 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...