/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/1_3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:06:05,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:06:05,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:06:05,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:06:05,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:06:05,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:06:05,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:06:05,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:06:05,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:06:05,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:06:05,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:06:05,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:06:05,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:06:05,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:06:05,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:06:05,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:06:05,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:06:05,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:06:05,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:06:05,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:06:05,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:06:05,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:06:05,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:06:05,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:06:05,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:06:05,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:06:05,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:06:05,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:06:05,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:06:05,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:06:05,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:06:05,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:06:06,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:06:06,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:06:06,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:06:06,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:06:06,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:06:06,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:06:06,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:06:06,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:06:06,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:06:06,007 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:06:06,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:06:06,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:06:06,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:06:06,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:06:06,035 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:06:06,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:06:06,036 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:06:06,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:06:06,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:06:06,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:06:06,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:06:06,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:06:06,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:06:06,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:06:06,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:06:06,038 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:06:06,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:06:06,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:06:06,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:06:06,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:06:06,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:06:06,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:06:06,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:06:06,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:06:06,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:06:06,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:06:06,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:06:06,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:06:06,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:06:06,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 02:06:06,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:06:06,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:06:06,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:06:06,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:06:06,577 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:06:06,578 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2020-09-25 02:06:06,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9189860e1/da349a9a430f4257aa68a26436f6e968/FLAGb47f67dfa [2020-09-25 02:06:07,253 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:06:07,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/1_3.i [2020-09-25 02:06:07,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9189860e1/da349a9a430f4257aa68a26436f6e968/FLAGb47f67dfa [2020-09-25 02:06:07,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9189860e1/da349a9a430f4257aa68a26436f6e968 [2020-09-25 02:06:07,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:06:07,608 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:06:07,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:06:07,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:06:07,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:06:07,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:06:07" (1/1) ... [2020-09-25 02:06:07,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d2c9f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:07, skipping insertion in model container [2020-09-25 02:06:07,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:06:07" (1/1) ... [2020-09-25 02:06:07,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:06:07,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:06:07,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:06:07,898 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:06:07,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:06:07,938 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:06:07,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:07 WrapperNode [2020-09-25 02:06:07,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:06:07,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:06:07,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:06:07,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:06:08,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:07" (1/1) ... [2020-09-25 02:06:08,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:07" (1/1) ... [2020-09-25 02:06:08,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:07" (1/1) ... [2020-09-25 02:06:08,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:07" (1/1) ... [2020-09-25 02:06:08,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:07" (1/1) ... [2020-09-25 02:06:08,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:07" (1/1) ... [2020-09-25 02:06:08,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:07" (1/1) ... [2020-09-25 02:06:08,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:06:08,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:06:08,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:06:08,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:06:08,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:07" (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 [2020-09-25 02:06:08,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:06:08,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:06:08,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-25 02:06:08,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2020-09-25 02:06:08,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2020-09-25 02:06:08,139 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2020-09-25 02:06:08,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:06:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:06:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-25 02:06:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:06:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:06:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2020-09-25 02:06:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:06:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:06:08,141 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2020-09-25 02:06:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2020-09-25 02:06:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:06:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:06:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:06:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:06:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:06:08,403 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:06:08,403 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:06:08,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:06:08 BoogieIcfgContainer [2020-09-25 02:06:08,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:06:08,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:06:08,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:06:08,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:06:08,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:06:07" (1/3) ... [2020-09-25 02:06:08,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f588431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:06:08, skipping insertion in model container [2020-09-25 02:06:08,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:07" (2/3) ... [2020-09-25 02:06:08,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f588431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:06:08, skipping insertion in model container [2020-09-25 02:06:08,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:06:08" (3/3) ... [2020-09-25 02:06:08,419 INFO L109 eAbstractionObserver]: Analyzing ICFG 1_3.i [2020-09-25 02:06:08,431 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:06:08,443 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:06:08,467 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:06:08,501 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:06:08,502 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:06:08,502 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:06:08,502 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:06:08,502 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:06:08,502 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:06:08,502 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:06:08,502 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:06:08,526 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-25 02:06:08,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 02:06:08,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:08,535 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] [2020-09-25 02:06:08,536 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:08,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:08,543 INFO L82 PathProgramCache]: Analyzing trace with hash 538172514, now seen corresponding path program 1 times [2020-09-25 02:06:08,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:08,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420768827] [2020-09-25 02:06:08,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:08,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:09,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:09,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 02:06:09,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-09-25 02:06:09,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:09,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:06:09,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 02:06:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 02:06:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:06:09,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:09,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:09,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:09,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:09,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:09,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:06:09,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:09,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:06:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:09,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:09,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:09,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 02:06:09,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:09,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 02:06:09,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:09,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:06:09,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:09,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 02:06:09,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:09,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:09,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:09,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:09,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:06:09,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:09,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:06:09,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:09,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420768827] [2020-09-25 02:06:09,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:06:09,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 02:06:09,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129617582] [2020-09-25 02:06:09,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:06:09,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:09,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:06:09,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:06:09,664 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 11 states. [2020-09-25 02:06:10,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:10,199 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-09-25 02:06:10,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 02:06:10,201 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-09-25 02:06:10,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:10,213 INFO L225 Difference]: With dead ends: 64 [2020-09-25 02:06:10,213 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 02:06:10,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:06:10,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 02:06:10,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-25 02:06:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 02:06:10,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 38 transitions. [2020-09-25 02:06:10,279 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 38 transitions. Word has length 30 [2020-09-25 02:06:10,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:10,280 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 38 transitions. [2020-09-25 02:06:10,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:06:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 38 transitions. [2020-09-25 02:06:10,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 02:06:10,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:10,282 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-09-25 02:06:10,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:06:10,283 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:10,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:10,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1533664090, now seen corresponding path program 1 times [2020-09-25 02:06:10,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:10,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424933753] [2020-09-25 02:06:10,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:06:10,313 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:06:10,313 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:06:10,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:06:10,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:06:10 BoogieIcfgContainer [2020-09-25 02:06:10,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:06:10,359 INFO L168 Benchmark]: Toolchain (without parser) took 2755.14 ms. Allocated memory was 138.4 MB in the beginning and 232.3 MB in the end (delta: 93.8 MB). Free memory was 101.4 MB in the beginning and 163.4 MB in the end (delta: -62.0 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:10,360 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 02:06:10,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.73 ms. Allocated memory is still 138.4 MB. Free memory was 100.7 MB in the beginning and 90.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:10,362 INFO L168 Benchmark]: Boogie Preprocessor took 122.50 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 90.9 MB in the beginning and 178.7 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:10,363 INFO L168 Benchmark]: RCFGBuilder took 346.52 ms. Allocated memory is still 200.8 MB. Free memory was 178.7 MB in the beginning and 163.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:10,364 INFO L168 Benchmark]: TraceAbstraction took 1945.25 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 162.4 MB in the beginning and 163.4 MB in the end (delta: -999.7 kB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:10,368 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.73 ms. Allocated memory is still 138.4 MB. Free memory was 100.7 MB in the beginning and 90.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.50 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 90.9 MB in the beginning and 178.7 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 346.52 ms. Allocated memory is still 200.8 MB. Free memory was 178.7 MB in the beginning and 163.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1945.25 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 162.4 MB in the beginning and 163.4 MB in the end (delta: -999.7 kB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L50] rr * ptr1 = 0; [L51] CALL, EXPR getPtr() [L37] CALL, EXPR getrr() [L30] rr * r = (rr *)malloc(sizeof *r); [L31] r -> state = 0 [L32] return r; [L37] RET, EXPR getrr() [L37] rr * r = getrr(); [L38] r -> state = 1 [L39] return r; [L51] RET, EXPR getPtr() [L51] ptr1 = getPtr() [L52] CALL freePtr(ptr1) [L44] EXPR ptr -> state [L44] (ptr -> state == 1) ? (0) : __blast_assert () [L45] ptr -> state = 2 [L52] RET freePtr(ptr1) [L54] CALL freePtr(ptr1) [L44] EXPR ptr -> state [L44] (ptr -> state == 1) ? (0) : __blast_assert () [L44] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 35 SDslu, 157 SDs, 0 SdLazy, 178 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 3074 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...