/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loop-acceleration/overflow_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:32:48,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:32:48,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:32:48,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:32:48,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:32:48,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:32:48,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:32:48,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:32:48,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:32:48,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:32:48,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:32:48,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:32:48,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:32:48,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:32:48,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:32:48,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:32:48,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:32:48,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:32:48,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:32:48,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:32:48,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:32:48,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:32:48,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:32:48,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:32:48,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:32:48,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:32:48,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:32:48,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:32:48,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:32:48,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:32:48,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:32:48,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:32:48,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:32:48,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:32:48,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:32:48,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:32:48,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:32:48,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:32:48,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:32:48,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:32:48,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:32:48,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:32:48,960 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:32:48,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:32:48,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:32:48,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:32:48,966 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:32:48,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:32:48,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:32:48,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:32:48,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:32:48,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:32:48,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:32:48,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:32:48,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:32:48,969 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:32:48,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:32:48,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:32:48,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:32:48,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:32:48,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:32:48,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:32:48,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:32:48,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:32:48,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:32:48,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:32:48,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:32:48,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:32:48,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:32:48,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:32:48,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:32:48,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:32:49,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:32:49,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:32:49,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:32:49,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:32:49,472 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:32:49,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/overflow_1-1.c [2020-10-27 01:32:49,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/121dd6b81/0c56d62400654f6b82f682e011b53cfc/FLAG1f525cc64 [2020-10-27 01:32:50,245 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:32:50,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/overflow_1-1.c [2020-10-27 01:32:50,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/121dd6b81/0c56d62400654f6b82f682e011b53cfc/FLAG1f525cc64 [2020-10-27 01:32:50,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/121dd6b81/0c56d62400654f6b82f682e011b53cfc [2020-10-27 01:32:50,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:32:50,605 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:32:50,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:32:50,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:32:50,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:32:50,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:32:50" (1/1) ... [2020-10-27 01:32:50,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3ff60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:32:50, skipping insertion in model container [2020-10-27 01:32:50,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:32:50" (1/1) ... [2020-10-27 01:32:50,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:32:50,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:32:50,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:32:50,893 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:32:50,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:32:50,932 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:32:50,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:32:50 WrapperNode [2020-10-27 01:32:50,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:32:50,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:32:50,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:32:50,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:32:50,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:32:50" (1/1) ... [2020-10-27 01:32:50,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:32:50" (1/1) ... [2020-10-27 01:32:50,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:32:50" (1/1) ... [2020-10-27 01:32:50,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:32:50" (1/1) ... [2020-10-27 01:32:50,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:32:50" (1/1) ... [2020-10-27 01:32:50,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:32:50" (1/1) ... [2020-10-27 01:32:50,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:32:50" (1/1) ... [2020-10-27 01:32:50,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:32:50,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:32:51,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:32:51,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:32:51,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:32:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:32:51,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:32:51,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:32:51,158 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:32:51,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 01:32:51,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:32:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:32:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:32:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:32:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:32:51,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:32:51,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:32:51,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:32:51,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:32:51,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:32:51,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:32:51,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:32:51,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:32:51,622 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:32:51,622 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 01:32:51,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:32:51 BoogieIcfgContainer [2020-10-27 01:32:51,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:32:51,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:32:51,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:32:51,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:32:51,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:32:50" (1/3) ... [2020-10-27 01:32:51,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e56c465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:32:51, skipping insertion in model container [2020-10-27 01:32:51,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:32:50" (2/3) ... [2020-10-27 01:32:51,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e56c465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:32:51, skipping insertion in model container [2020-10-27 01:32:51,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:32:51" (3/3) ... [2020-10-27 01:32:51,646 INFO L111 eAbstractionObserver]: Analyzing ICFG overflow_1-1.c [2020-10-27 01:32:51,660 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:32:51,665 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:32:51,682 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:32:51,725 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:32:51,725 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:32:51,726 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:32:51,726 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:32:51,726 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:32:51,726 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:32:51,726 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:32:51,727 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:32:51,755 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-27 01:32:51,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 01:32:51,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:32:51,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:32:51,763 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:32:51,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:32:51,773 INFO L82 PathProgramCache]: Analyzing trace with hash 783588435, now seen corresponding path program 1 times [2020-10-27 01:32:51,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:32:51,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918826302] [2020-10-27 01:32:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:32:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:32:51,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:32:52,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:32:52,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:32:52,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:32:52,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:32:52,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-27 01:32:52,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:32:52,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:32:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:32:52,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:32:52,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:32:52,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:32:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:32:52,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:32:52,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:32:52,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:32:52,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:32:52,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:32:52,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:32:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:32:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:32:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:32:52,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:32:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:32:52,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918826302] [2020-10-27 01:32:52,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:32:52,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:32:52,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091955723] [2020-10-27 01:32:52,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:32:52,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:32:52,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:32:52,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:32:52,658 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 6 states. [2020-10-27 01:32:52,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:32:52,867 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-10-27 01:32:52,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:32:52,869 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-27 01:32:52,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:32:52,876 INFO L225 Difference]: With dead ends: 31 [2020-10-27 01:32:52,876 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 01:32:52,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:32:52,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 01:32:52,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 01:32:52,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 01:32:52,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 01:32:52,908 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-27 01:32:52,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:32:52,909 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 01:32:52,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:32:52,909 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 01:32:52,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 01:32:52,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:32:52,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 01:32:53,048 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 01:32:53,049 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 01:32:53,049 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 01:32:53,050 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 01:32:53,050 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:32:53,050 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 01:32:53,050 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:32:53,051 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:32:53,051 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 01:32:53,051 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 01:32:53,051 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:32:53,051 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 12 20) the Hoare annotation is: true [2020-10-27 01:32:53,052 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 12 20) no Hoare annotation was computed. [2020-10-27 01:32:53,052 INFO L270 CegarLoopResult]: At program point L15-2(lines 15 17) the Hoare annotation is: (let ((.cse0 (div main_~x~0 2))) (and (<= main_~x~0 (* 2 .cse0)) (< 4 .cse0))) [2020-10-27 01:32:53,052 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 12 20) no Hoare annotation was computed. [2020-10-27 01:32:53,052 INFO L270 CegarLoopResult]: At program point L15-3(lines 15 17) the Hoare annotation is: (let ((.cse0 (div main_~x~0 2))) (and (<= main_~x~0 (* 2 .cse0)) (< 4 .cse0))) [2020-10-27 01:32:53,052 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-27 01:32:53,053 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-27 01:32:53,053 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-27 01:32:53,053 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-27 01:32:53,053 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-27 01:32:53,053 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-27 01:32:53,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:32:53 BoogieIcfgContainer [2020-10-27 01:32:53,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:32:53,075 INFO L168 Benchmark]: Toolchain (without parser) took 2473.35 ms. Allocated memory was 157.3 MB in the beginning and 199.2 MB in the end (delta: 41.9 MB). Free memory was 138.9 MB in the beginning and 138.8 MB in the end (delta: 87.2 kB). Peak memory consumption was 41.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:32:53,076 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 157.3 MB. Free memory is still 129.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:32:53,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.66 ms. Allocated memory is still 157.3 MB. Free memory was 138.2 MB in the beginning and 128.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:32:53,078 INFO L168 Benchmark]: Boogie Preprocessor took 63.24 ms. Allocated memory is still 157.3 MB. Free memory was 128.7 MB in the beginning and 127.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:32:53,079 INFO L168 Benchmark]: RCFGBuilder took 628.06 ms. Allocated memory is still 157.3 MB. Free memory was 127.1 MB in the beginning and 129.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 2.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:32:53,080 INFO L168 Benchmark]: TraceAbstraction took 1442.20 ms. Allocated memory was 157.3 MB in the beginning and 199.2 MB in the end (delta: 41.9 MB). Free memory was 128.7 MB in the beginning and 138.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 31.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:32:53,085 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 157.3 MB. Free memory is still 129.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 325.66 ms. Allocated memory is still 157.3 MB. Free memory was 138.2 MB in the beginning and 128.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.24 ms. Allocated memory is still 157.3 MB. Free memory was 128.7 MB in the beginning and 127.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 628.06 ms. Allocated memory is still 157.3 MB. Free memory was 127.1 MB in the beginning and 129.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 2.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1442.20 ms. Allocated memory was 157.3 MB in the beginning and 199.2 MB in the end (delta: 41.9 MB). Free memory was 128.7 MB in the beginning and 138.8 MB in the end (delta: -10.1 MB). Peak memory consumption was 31.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x <= 2 * (x / 2) && 4 < x / 2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 13 SDslu, 23 SDs, 0 SdLazy, 24 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 12 NumberOfFragments, 65 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 128 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 781 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...