/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=SHALLOWEST --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 [2020-09-24 23:50:38,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:50:38,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:50:39,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:50:39,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:50:39,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:50:39,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:50:39,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:50:39,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:50:39,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:50:39,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:50:39,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:50:39,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:50:39,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:50:39,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:50:39,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:50:39,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:50:39,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:50:39,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:50:39,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:50:39,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:50:39,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:50:39,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:50:39,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:50:39,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:50:39,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:50:39,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:50:39,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:50:39,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:50:39,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:50:39,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:50:39,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:50:39,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:50:39,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:50:39,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:50:39,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:50:39,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:50:39,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:50:39,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:50:39,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:50:39,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:50:39,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:50:39,161 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:50:39,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:50:39,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:50:39,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:50:39,165 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:50:39,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:50:39,165 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:50:39,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:50:39,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:50:39,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:50:39,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:50:39,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:50:39,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:50:39,168 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:50:39,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:50:39,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:50:39,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:50:39,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:50:39,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:50:39,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:50:39,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:50:39,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:50:39,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:50:39,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:50:39,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:50:39,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:50:39,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:50:39,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:50:39,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:50:39,171 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:50:39,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:50:39,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:50:39,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:50:39,659 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:50:39,659 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:50:39,661 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2020-09-24 23:50:39,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/942c0fc8a/0ffa4b348476459a8da40786f53082b8/FLAG47f339756 [2020-09-24 23:50:40,322 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:50:40,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/1_3.i [2020-09-24 23:50:40,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/942c0fc8a/0ffa4b348476459a8da40786f53082b8/FLAG47f339756 [2020-09-24 23:50:40,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/942c0fc8a/0ffa4b348476459a8da40786f53082b8 [2020-09-24 23:50:40,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:50:40,686 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:50:40,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:50:40,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:50:40,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:50:40,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:50:40" (1/1) ... [2020-09-24 23:50:40,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f49550a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:40, skipping insertion in model container [2020-09-24 23:50:40,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:50:40" (1/1) ... [2020-09-24 23:50:40,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:50:40,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:50:41,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:50:41,054 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:50:41,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:50:41,097 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:50:41,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41 WrapperNode [2020-09-24 23:50:41,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:50:41,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:50:41,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:50:41,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:50:41,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (1/1) ... [2020-09-24 23:50:41,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (1/1) ... [2020-09-24 23:50:41,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (1/1) ... [2020-09-24 23:50:41,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (1/1) ... [2020-09-24 23:50:41,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (1/1) ... [2020-09-24 23:50:41,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (1/1) ... [2020-09-24 23:50:41,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (1/1) ... [2020-09-24 23:50:41,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:50:41,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:50:41,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:50:41,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:50:41,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:50:41,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:50:41,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:50:41,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-24 23:50:41,308 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2020-09-24 23:50:41,308 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2020-09-24 23:50:41,308 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2020-09-24 23:50:41,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:50:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:50:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-24 23:50:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:50:41,309 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 23:50:41,310 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2020-09-24 23:50:41,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 23:50:41,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:50:41,310 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2020-09-24 23:50:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2020-09-24 23:50:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:50:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:50:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:50:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:50:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:50:41,570 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:50:41,570 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:50:41,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:50:41 BoogieIcfgContainer [2020-09-24 23:50:41,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:50:41,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:50:41,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:50:41,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:50:41,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:50:40" (1/3) ... [2020-09-24 23:50:41,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8989d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:50:41, skipping insertion in model container [2020-09-24 23:50:41,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:50:41" (2/3) ... [2020-09-24 23:50:41,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8989d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:50:41, skipping insertion in model container [2020-09-24 23:50:41,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:50:41" (3/3) ... [2020-09-24 23:50:41,610 INFO L109 eAbstractionObserver]: Analyzing ICFG 1_3.i [2020-09-24 23:50:41,624 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:50:41,636 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:50:41,657 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:50:41,689 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:50:41,690 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:50:41,690 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:50:41,690 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:50:41,690 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:50:41,690 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:50:41,690 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:50:41,691 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:50:41,714 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-24 23:50:41,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 23:50:41,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:41,723 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] [2020-09-24 23:50:41,724 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:41,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:41,731 INFO L82 PathProgramCache]: Analyzing trace with hash 538172514, now seen corresponding path program 1 times [2020-09-24 23:50:41,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:41,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824977997] [2020-09-24 23:50:41,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:41,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:42,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:42,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 23:50:42,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:42,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-09-24 23:50:42,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:50:42,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 23:50:42,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:50:42,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:50:42,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:42,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:42,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:42,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:50:42,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:42,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:50:42,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:42,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:42,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 23:50:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:42,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:42,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:42,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 23:50:42,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:42,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 23:50:42,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:50:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 23:50:42,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:42,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:50:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:50:42,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:50:42,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:50:42,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:50:42,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:50:42,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 23:50:42,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:50:42,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:50:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:50:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:50:42,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:50:42,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:50:42,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824977997] [2020-09-24 23:50:42,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:50:42,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 23:50:42,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856006502] [2020-09-24 23:50:42,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:50:42,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:50:42,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:50:42,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:50:42,974 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 11 states. [2020-09-24 23:50:43,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:50:43,452 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-09-24 23:50:43,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 23:50:43,455 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-09-24 23:50:43,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:50:43,468 INFO L225 Difference]: With dead ends: 64 [2020-09-24 23:50:43,468 INFO L226 Difference]: Without dead ends: 39 [2020-09-24 23:50:43,473 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 [2020-09-24 23:50:43,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-24 23:50:43,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-24 23:50:43,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-24 23:50:43,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 38 transitions. [2020-09-24 23:50:43,534 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 38 transitions. Word has length 30 [2020-09-24 23:50:43,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:50:43,535 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 38 transitions. [2020-09-24 23:50:43,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:50:43,535 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 38 transitions. [2020-09-24 23:50:43,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 23:50:43,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:50:43,537 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] [2020-09-24 23:50:43,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:50:43,538 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:50:43,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:50:43,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1533664090, now seen corresponding path program 1 times [2020-09-24 23:50:43,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:50:43,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386990510] [2020-09-24 23:50:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:50:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:50:43,560 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:50:43,560 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:50:43,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:50:43,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:50:43 BoogieIcfgContainer [2020-09-24 23:50:43,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:50:43,595 INFO L168 Benchmark]: Toolchain (without parser) took 2912.30 ms. Allocated memory was 141.0 MB in the beginning and 234.4 MB in the end (delta: 93.3 MB). Free memory was 104.2 MB in the beginning and 161.7 MB in the end (delta: -57.5 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2020-09-24 23:50:43,596 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-24 23:50:43,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.46 ms. Allocated memory is still 141.0 MB. Free memory was 103.3 MB in the beginning and 93.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 23:50:43,598 INFO L168 Benchmark]: Boogie Preprocessor took 124.46 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.6 MB in the beginning and 181.4 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 23:50:43,599 INFO L168 Benchmark]: RCFGBuilder took 353.10 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 166.7 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-09-24 23:50:43,600 INFO L168 Benchmark]: TraceAbstraction took 2005.40 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 165.7 MB in the beginning and 161.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2020-09-24 23:50:43,605 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 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 411.46 ms. Allocated memory is still 141.0 MB. Free memory was 103.3 MB in the beginning and 93.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.46 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 93.6 MB in the beginning and 181.4 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 353.10 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 166.7 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2005.40 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 165.7 MB in the beginning and 161.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 34.4 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, 0.1s 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, 1.0s 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...