/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-regression/test08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:19:04,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:19:04,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:19:04,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:19:04,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:19:04,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:19:04,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:19:04,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:19:04,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:19:04,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:19:04,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:19:04,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:19:04,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:19:04,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:19:04,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:19:04,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:19:04,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:19:05,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:19:05,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:19:05,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:19:05,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:19:05,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:19:05,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:19:05,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:19:05,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:19:05,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:19:05,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:19:05,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:19:05,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:19:05,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:19:05,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:19:05,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:19:05,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:19:05,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:19:05,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:19:05,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:19:05,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:19:05,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:19:05,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:19:05,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:19:05,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:19:05,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:19:05,114 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:19:05,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:19:05,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:19:05,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:19:05,120 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:19:05,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:19:05,121 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:19:05,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:19:05,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:19:05,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:19:05,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:19:05,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:19:05,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:19:05,124 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:19:05,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:19:05,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:19:05,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:19:05,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:19:05,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:19:05,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:19:05,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:19:05,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:19:05,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:19:05,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:19:05,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:19:05,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:19:05,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:19:05,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:19:05,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:19:05,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:19:05,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:19:05,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:19:05,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:19:05,604 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:19:05,604 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:19:05,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test08.c [2020-10-29 09:19:05,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65f1f6e16/b6295ea19f13463784be466de6eb76b4/FLAG40ecae458 [2020-10-29 09:19:06,459 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:19:06,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test08.c [2020-10-29 09:19:06,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65f1f6e16/b6295ea19f13463784be466de6eb76b4/FLAG40ecae458 [2020-10-29 09:19:06,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65f1f6e16/b6295ea19f13463784be466de6eb76b4 [2020-10-29 09:19:06,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:19:06,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:19:06,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:19:06,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:19:06,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:19:06,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:19:06" (1/1) ... [2020-10-29 09:19:06,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ddcd2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:06, skipping insertion in model container [2020-10-29 09:19:06,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:19:06" (1/1) ... [2020-10-29 09:19:06,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:19:06,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:19:07,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:19:07,083 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:19:07,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:19:07,123 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:19:07,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:07 WrapperNode [2020-10-29 09:19:07,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:19:07,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:19:07,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:19:07,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:19:07,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:07" (1/1) ... [2020-10-29 09:19:07,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:07" (1/1) ... [2020-10-29 09:19:07,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:07" (1/1) ... [2020-10-29 09:19:07,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:07" (1/1) ... [2020-10-29 09:19:07,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:07" (1/1) ... [2020-10-29 09:19:07,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:07" (1/1) ... [2020-10-29 09:19:07,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:07" (1/1) ... [2020-10-29 09:19:07,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:19:07,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:19:07,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:19:07,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:19:07,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:19:07,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:19:07,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:19:07,258 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:19:07,259 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-29 09:19:07,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:19:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:19:07,259 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:19:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:19:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:19:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-29 09:19:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:19:07,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:19:07,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:19:07,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:19:07,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:19:07,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:19:07,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:19:07,654 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:19:07,654 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 09:19:07,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:19:07 BoogieIcfgContainer [2020-10-29 09:19:07,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:19:07,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:19:07,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:19:07,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:19:07,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:19:06" (1/3) ... [2020-10-29 09:19:07,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405fbba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:19:07, skipping insertion in model container [2020-10-29 09:19:07,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:07" (2/3) ... [2020-10-29 09:19:07,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405fbba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:19:07, skipping insertion in model container [2020-10-29 09:19:07,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:19:07" (3/3) ... [2020-10-29 09:19:07,675 INFO L111 eAbstractionObserver]: Analyzing ICFG test08.c [2020-10-29 09:19:07,706 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:19:07,720 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:19:07,767 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:19:07,837 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:19:07,837 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:19:07,837 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:19:07,838 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:19:07,838 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:19:07,838 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:19:07,838 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:19:07,838 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:19:07,858 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-29 09:19:07,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 09:19:07,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:19:07,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:19:07,866 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:19:07,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:19:07,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1827250340, now seen corresponding path program 1 times [2020-10-29 09:19:07,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:19:07,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506540288] [2020-10-29 09:19:07,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:19:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:19:08,084 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:19:08,085 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:19:08,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:19:08,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:19:08 BoogieIcfgContainer [2020-10-29 09:19:08,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:19:08,115 INFO L168 Benchmark]: Toolchain (without parser) took 1303.21 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 123.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:19:08,116 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 123.4 MB in the end (delta: 77.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:19:08,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.84 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:19:08,122 INFO L168 Benchmark]: Boogie Preprocessor took 40.48 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:19:08,123 INFO L168 Benchmark]: RCFGBuilder took 489.73 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 100.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:19:08,123 INFO L168 Benchmark]: TraceAbstraction took 453.85 ms. Allocated memory is still 151.0 MB. Free memory was 100.5 MB in the beginning and 123.2 MB in the end (delta: -22.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:19:08,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 123.4 MB in the end (delta: 77.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 306.84 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.48 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 489.73 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 100.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 453.85 ms. Allocated memory is still 151.0 MB. Free memory was 100.5 MB in the beginning and 123.2 MB in the end (delta: -22.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] int a, b; [L7] int *p1, *p2; [L21] p1 = &a [L22] p2 = &b [L24] b = 1 [L25] a = 5 [L27] EXPR \read(a) [L27] a-- [L29] CALL, EXPR f() [L10] EXPR \read(*p1) [L10] EXPR \read(*p2) [L10] EXPR \read(a) [L10] int v = *p1 + *p2 - a; [L11] COND TRUE v == 1 [L12] p1 = p2 [L13] return v; [L29] RET, EXPR f() [L29] a = f() [L31] EXPR \read(a) [L31] COND TRUE a && p1 == p2 [L38] CALL reach_error() [L3] __assert_fail("0", "test08.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...