/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/test25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:19:45,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:19:45,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:19:45,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:19:45,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:19:45,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:19:45,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:19:45,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:19:45,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:19:45,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:19:45,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:19:45,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:19:45,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:19:45,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:19:45,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:19:45,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:19:45,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:19:45,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:19:45,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:19:45,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:19:45,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:19:45,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:19:45,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:19:45,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:19:45,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:19:45,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:19:45,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:19:45,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:19:45,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:19:45,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:19:45,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:19:45,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:19:45,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:19:45,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:19:45,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:19:45,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:19:45,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:19:45,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:19:45,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:19:45,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:19:45,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:19:45,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:19:45,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:19:45,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:19:45,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:19:45,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:19:45,341 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:19:45,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:19:45,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:19:45,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:19:45,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:19:45,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:19:45,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:19:45,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:19:45,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:19:45,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:19:45,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:19:45,344 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:19:45,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:19:45,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:19:45,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:19:45,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:19:45,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:19:45,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:19:45,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:19:45,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:19:45,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:19:45,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:19:45,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:19:45,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:19:45,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:19:45,347 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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:19:45,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:19:45,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:19:45,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:19:45,913 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:19:45,914 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:19:45,915 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test25-2.c [2020-09-25 12:19:45,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdcbbf449/f9c1a62b763f49cb99e19379a23e33ef/FLAGe1f189fca [2020-09-25 12:19:46,581 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:19:46,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test25-2.c [2020-09-25 12:19:46,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdcbbf449/f9c1a62b763f49cb99e19379a23e33ef/FLAGe1f189fca [2020-09-25 12:19:46,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdcbbf449/f9c1a62b763f49cb99e19379a23e33ef [2020-09-25 12:19:46,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:19:46,943 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:19:46,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:19:46,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:19:46,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:19:46,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:19:46" (1/1) ... [2020-09-25 12:19:46,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@785e5d87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:46, skipping insertion in model container [2020-09-25 12:19:46,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:19:46" (1/1) ... [2020-09-25 12:19:46,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:19:46,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:19:47,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:19:47,263 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:19:47,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:19:47,404 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:19:47,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:47 WrapperNode [2020-09-25 12:19:47,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:19:47,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:19:47,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:19:47,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:19:47,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:47" (1/1) ... [2020-09-25 12:19:47,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:47" (1/1) ... [2020-09-25 12:19:47,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:47" (1/1) ... [2020-09-25 12:19:47,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:47" (1/1) ... [2020-09-25 12:19:47,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:47" (1/1) ... [2020-09-25 12:19:47,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:47" (1/1) ... [2020-09-25 12:19:47,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:47" (1/1) ... [2020-09-25 12:19:47,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:19:47,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:19:47,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:19:47,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:19:47,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:19:47,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:19:47,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:19:47,547 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 12:19:47,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:19:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:19:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:19:47,547 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 12:19:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 12:19:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 12:19:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:19:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 12:19:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 12:19:47,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 12:19:47,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:19:47,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:19:47,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:19:47,909 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:19:47,910 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 12:19:47,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:19:47 BoogieIcfgContainer [2020-09-25 12:19:47,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:19:47,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:19:47,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:19:47,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:19:47,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:19:46" (1/3) ... [2020-09-25 12:19:47,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3643ce38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:19:47, skipping insertion in model container [2020-09-25 12:19:47,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:47" (2/3) ... [2020-09-25 12:19:47,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3643ce38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:19:47, skipping insertion in model container [2020-09-25 12:19:47,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:19:47" (3/3) ... [2020-09-25 12:19:47,927 INFO L109 eAbstractionObserver]: Analyzing ICFG test25-2.c [2020-09-25 12:19:47,940 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:19:47,951 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:19:47,994 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:19:48,032 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:19:48,032 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:19:48,032 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:19:48,033 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:19:48,033 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:19:48,033 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:19:48,033 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:19:48,033 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:19:48,060 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-09-25 12:19:48,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 12:19:48,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:19:48,070 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:19:48,070 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:19:48,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:19:48,078 INFO L82 PathProgramCache]: Analyzing trace with hash 144198137, now seen corresponding path program 1 times [2020-09-25 12:19:48,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:19:48,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567810080] [2020-09-25 12:19:48,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:19:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:48,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:48,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:48,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:48,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 12:19:48,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:19:48,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-25 12:19:48,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:48,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:48,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 12:19:48,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:48,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 12:19:48,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:19:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:48,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:48,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:48,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:19:48,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:48,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:19:48,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:48,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:48,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:48,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:48,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:19:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:48,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:48,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:48,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:19:48,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:48,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 12:19:48,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:48,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:19:48,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:48,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:19:48,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:19:48,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567810080] [2020-09-25 12:19:48,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:19:48,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:19:48,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164490131] [2020-09-25 12:19:48,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:19:48,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:19:48,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:19:48,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:19:48,859 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2020-09-25 12:19:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:19:49,115 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-09-25 12:19:49,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:19:49,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-09-25 12:19:49,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:19:49,137 INFO L225 Difference]: With dead ends: 124 [2020-09-25 12:19:49,138 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 12:19:49,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:19:49,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 12:19:49,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 12:19:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 12:19:49,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 12:19:49,219 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 44 [2020-09-25 12:19:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:19:49,221 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 12:19:49,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:19:49,222 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 12:19:49,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 12:19:49,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:19:49,226 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:19:49,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:19:49,231 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:19:49,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:19:49,232 INFO L82 PathProgramCache]: Analyzing trace with hash 608042528, now seen corresponding path program 1 times [2020-09-25 12:19:49,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:19:49,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009454383] [2020-09-25 12:19:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:19:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:49,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:49,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:50,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:50,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 12:19:50,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:19:50,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 828 [2020-09-25 12:19:50,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:50,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:19:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 12:19:50,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:19:50,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:19:50,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:19:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:50,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:50,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:50,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:19:50,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:50,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:19:50,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:50,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:50,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:50,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:50,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:19:50,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-25 12:19:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:50,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:50,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:50,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:19:50,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:19:50,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:50,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:50,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:19:50,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:50,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:19:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:19:50,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009454383] [2020-09-25 12:19:50,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:19:50,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 12:19:50,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300309064] [2020-09-25 12:19:50,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:19:50,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:19:50,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:19:50,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:19:50,402 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 9 states. [2020-09-25 12:19:50,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:19:50,843 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2020-09-25 12:19:50,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:19:50,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-09-25 12:19:50,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:19:50,846 INFO L225 Difference]: With dead ends: 81 [2020-09-25 12:19:50,846 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 12:19:50,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:19:50,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 12:19:50,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2020-09-25 12:19:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 12:19:50,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-25 12:19:50,868 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 46 [2020-09-25 12:19:50,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:19:50,870 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-25 12:19:50,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:19:50,871 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-25 12:19:50,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 12:19:50,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:19:50,876 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1] [2020-09-25 12:19:50,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:19:50,876 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:19:50,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:19:50,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1603707080, now seen corresponding path program 1 times [2020-09-25 12:19:50,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:19:50,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283830054] [2020-09-25 12:19:50,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:19:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:50,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:50,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:51,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:53,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:53,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:19:53,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:19:53,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2526 [2020-09-25 12:19:53,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:53,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:53,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:19:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 12:19:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:19:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:53,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:19:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:53,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:53,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:53,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:19:53,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:53,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:19:53,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:53,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:53,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:53,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:53,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:53,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:53,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 12:19:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:53,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:53,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:53,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:19:53,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:53,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 12:19:53,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:53,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:19:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:53,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:19:53,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:19:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:19:53,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283830054] [2020-09-25 12:19:53,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:19:53,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:19:53,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031351571] [2020-09-25 12:19:53,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:19:53,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:19:53,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:19:53,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:19:53,919 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 16 states. [2020-09-25 12:19:54,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:19:54,640 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2020-09-25 12:19:54,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:19:54,641 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2020-09-25 12:19:54,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:19:54,641 INFO L225 Difference]: With dead ends: 62 [2020-09-25 12:19:54,642 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 12:19:54,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2020-09-25 12:19:54,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 12:19:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 12:19:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 12:19:54,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 12:19:54,644 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2020-09-25 12:19:54,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:19:54,644 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 12:19:54,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:19:54,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 12:19:54,645 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 12:19:54,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:19:54,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 12:19:54,738 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 12:19:54,738 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 12:19:54,739 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:19:54,739 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 12:19:54,739 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:19:54,739 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:19:54,739 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 12:19:54,740 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 12:19:54,740 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:19:54,740 INFO L268 CegarLoopResult]: For program point L35-2(lines 35 43) no Hoare annotation was computed. [2020-09-25 12:19:54,740 INFO L268 CegarLoopResult]: For program point L35-3(line 35) no Hoare annotation was computed. [2020-09-25 12:19:54,740 INFO L268 CegarLoopResult]: For program point L35-4(line 35) no Hoare annotation was computed. [2020-09-25 12:19:54,740 INFO L268 CegarLoopResult]: For program point L35-6(line 35) no Hoare annotation was computed. [2020-09-25 12:19:54,741 INFO L268 CegarLoopResult]: For program point L35-7(line 35) no Hoare annotation was computed. [2020-09-25 12:19:54,741 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 12:19:54,741 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 50) no Hoare annotation was computed. [2020-09-25 12:19:54,741 INFO L268 CegarLoopResult]: For program point L27-3(lines 27 30) no Hoare annotation was computed. [2020-09-25 12:19:54,741 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 12:19:54,741 INFO L268 CegarLoopResult]: For program point L27-4(line 27) no Hoare annotation was computed. [2020-09-25 12:19:54,741 INFO L268 CegarLoopResult]: For program point L27-5(line 27) no Hoare annotation was computed. [2020-09-25 12:19:54,742 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 12:19:54,742 INFO L271 CegarLoopResult]: At program point L27-6(lines 27 30) the Hoare annotation is: true [2020-09-25 12:19:54,742 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 12:19:54,742 INFO L268 CegarLoopResult]: For program point L27-7(lines 21 50) no Hoare annotation was computed. [2020-09-25 12:19:54,742 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-25 12:19:54,742 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-25 12:19:54,742 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-25 12:19:54,743 INFO L268 CegarLoopResult]: For program point L40-1(lines 40 42) no Hoare annotation was computed. [2020-09-25 12:19:54,743 INFO L268 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2020-09-25 12:19:54,743 INFO L268 CegarLoopResult]: For program point L40-3(line 40) no Hoare annotation was computed. [2020-09-25 12:19:54,743 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-25 12:19:54,743 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-09-25 12:19:54,743 INFO L268 CegarLoopResult]: For program point L36-2(line 36) no Hoare annotation was computed. [2020-09-25 12:19:54,744 INFO L268 CegarLoopResult]: For program point L32(lines 32 44) no Hoare annotation was computed. [2020-09-25 12:19:54,744 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 12:19:54,744 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-09-25 12:19:54,744 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-25 12:19:54,744 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 12:19:54,744 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-25 12:19:54,744 INFO L264 CegarLoopResult]: At program point L41(lines 21 50) the Hoare annotation is: false [2020-09-25 12:19:54,745 INFO L268 CegarLoopResult]: For program point L37-1(lines 37 39) no Hoare annotation was computed. [2020-09-25 12:19:54,745 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed. [2020-09-25 12:19:54,745 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 12:19:54,745 INFO L268 CegarLoopResult]: For program point L37-4(line 37) no Hoare annotation was computed. [2020-09-25 12:19:54,745 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 12:19:54,745 INFO L264 CegarLoopResult]: At program point L37-5(lines 37 39) the Hoare annotation is: (let ((.cse0 (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))) (and (<= main_~pa~0.offset .cse0) (= (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|) main_~pa~0.base) (<= .cse0 main_~pa~0.offset) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)))) [2020-09-25 12:19:54,746 INFO L264 CegarLoopResult]: At program point L37-6(lines 37 39) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (.cse1 (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))) (and (= main_~i~0 (select (select |#memory_int| .cse0) .cse1)) (<= main_~pa~0.offset .cse1) (= .cse0 main_~pa~0.base) (<= .cse1 main_~pa~0.offset))) [2020-09-25 12:19:54,746 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 12:19:54,746 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-25 12:19:54,746 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-09-25 12:19:54,746 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 12:19:54,747 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-25 12:19:54,747 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-25 12:19:54,747 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 50) no Hoare annotation was computed. [2020-09-25 12:19:54,747 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 12:19:54,747 INFO L268 CegarLoopResult]: For program point L38-1(line 38) no Hoare annotation was computed. [2020-09-25 12:19:54,747 INFO L268 CegarLoopResult]: For program point L38-2(line 38) no Hoare annotation was computed. [2020-09-25 12:19:54,747 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 12:19:54,748 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-09-25 12:19:54,748 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2020-09-25 12:19:54,748 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 20 50) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 12:19:54,748 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 12:19:54,748 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 12:19:54,749 INFO L268 CegarLoopResult]: For program point L22-2(line 22) no Hoare annotation was computed. [2020-09-25 12:19:54,749 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 12:19:54,749 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 12:19:54,749 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 12:19:54,749 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-09-25 12:19:54,749 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 12:19:54,749 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 12:19:54,749 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 15 18) the Hoare annotation is: true [2020-09-25 12:19:54,750 INFO L268 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-09-25 12:19:54,750 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 12:19:54,750 INFO L268 CegarLoopResult]: For program point L17-3(line 17) no Hoare annotation was computed. [2020-09-25 12:19:54,750 INFO L268 CegarLoopResult]: For program point L17-4(line 17) no Hoare annotation was computed. [2020-09-25 12:19:54,750 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 15 18) no Hoare annotation was computed. [2020-09-25 12:19:54,750 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 15 18) no Hoare annotation was computed. [2020-09-25 12:19:54,776 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 12:19:54,778 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 12:19:54,779 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 12:19:54,785 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 12:19:54,786 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 12:19:54,786 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 12:19:54,786 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 12:19:54,788 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 12:19:54,788 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 12:19:54,788 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 12:19:54,789 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 12:19:54,789 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 12:19:54,789 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 12:19:54,790 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 12:19:54,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:19:54 BoogieIcfgContainer [2020-09-25 12:19:54,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:19:54,802 INFO L168 Benchmark]: Toolchain (without parser) took 7859.53 ms. Allocated memory was 146.3 MB in the beginning and 278.9 MB in the end (delta: 132.6 MB). Free memory was 100.8 MB in the beginning and 114.3 MB in the end (delta: -13.5 MB). Peak memory consumption was 119.1 MB. Max. memory is 7.1 GB. [2020-09-25 12:19:54,803 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-25 12:19:54,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.09 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.3 MB in the beginning and 181.0 MB in the end (delta: -80.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-09-25 12:19:54,809 INFO L168 Benchmark]: Boogie Preprocessor took 55.36 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 178.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-25 12:19:54,810 INFO L168 Benchmark]: RCFGBuilder took 455.27 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 156.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-25 12:19:54,815 INFO L168 Benchmark]: TraceAbstraction took 6876.80 ms. Allocated memory was 202.4 MB in the beginning and 278.9 MB in the end (delta: 76.5 MB). Free memory was 156.6 MB in the beginning and 114.3 MB in the end (delta: 42.4 MB). Peak memory consumption was 118.9 MB. Max. memory is 7.1 GB. [2020-09-25 12:19:54,821 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.3 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 462.09 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.3 MB in the beginning and 181.0 MB in the end (delta: -80.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.36 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 178.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 455.27 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 156.6 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6876.80 ms. Allocated memory was 202.4 MB in the beginning and 278.9 MB in the end (delta: 76.5 MB). Free memory was 156.6 MB in the beginning and 114.3 MB in the end (delta: 42.4 MB). Peak memory consumption was 118.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant [2020-09-25 12:19:54,842 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 12:19:54,843 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 12:19:54,847 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 12:19:54,847 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 12:19:54,848 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 12:19:54,848 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 12:19:54,848 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 12:19:54,851 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 12:19:54,852 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 12:19:54,852 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 12:19:54,853 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 12:19:54,853 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 12:19:54,853 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 12:19:54,854 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((pa <= #memory_$Pointer$[cont][cont] + 4 && #memory_$Pointer$[cont][cont] == pa) && #memory_$Pointer$[cont][cont] + 4 <= pa) && i <= unknown-#memory_int-unknown[pa][pa] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 170 SDtfs, 76 SDslu, 521 SDs, 0 SdLazy, 545 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 14 NumberOfFragments, 94 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 52 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 47332 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 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...