/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/loops-crafted-1/mono-crafted_12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:50:07,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:50:07,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:50:07,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:50:07,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:50:07,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:50:07,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:50:07,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:50:07,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:50:07,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:50:07,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:50:07,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:50:07,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:50:07,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:50:07,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:50:07,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:50:07,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:50:07,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:50:07,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:50:07,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:50:07,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:50:07,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:50:07,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:50:07,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:50:07,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:50:07,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:50:07,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:50:07,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:50:07,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:50:07,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:50:07,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:50:07,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:50:07,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:50:07,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:50:07,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:50:07,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:50:07,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:50:07,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:50:07,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:50:07,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:50:07,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:50:07,872 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 01:50:07,898 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:50:07,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:50:07,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:50:07,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:50:07,901 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:50:07,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:50:07,901 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:50:07,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:50:07,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:50:07,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:50:07,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:50:07,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:50:07,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:50:07,903 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:50:07,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:50:07,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:50:07,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:50:07,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:50:07,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:50:07,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:50:07,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:50:07,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:50:07,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:50:07,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:50:07,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:50:07,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:50:07,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:50:07,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:50:07,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:50:07,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:50:08,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:50:08,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:50:08,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:50:08,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:50:08,322 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:50:08,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c [2020-10-27 01:50:08,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7606165ad/02c06a6634804ba98176ed71165c9daa/FLAG6a97e761c [2020-10-27 01:50:09,076 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:50:09,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c [2020-10-27 01:50:09,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7606165ad/02c06a6634804ba98176ed71165c9daa/FLAG6a97e761c [2020-10-27 01:50:09,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7606165ad/02c06a6634804ba98176ed71165c9daa [2020-10-27 01:50:09,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:50:09,465 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:50:09,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:50:09,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:50:09,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:50:09,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:50:09" (1/1) ... [2020-10-27 01:50:09,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323deba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:09, skipping insertion in model container [2020-10-27 01:50:09,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:50:09" (1/1) ... [2020-10-27 01:50:09,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:50:09,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:50:09,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:50:09,679 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:50:09,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:50:09,710 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:50:09,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:09 WrapperNode [2020-10-27 01:50:09,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:50:09,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:50:09,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:50:09,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:50:09,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:09" (1/1) ... [2020-10-27 01:50:09,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:09" (1/1) ... [2020-10-27 01:50:09,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:09" (1/1) ... [2020-10-27 01:50:09,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:09" (1/1) ... [2020-10-27 01:50:09,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:09" (1/1) ... [2020-10-27 01:50:09,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:09" (1/1) ... [2020-10-27 01:50:09,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:09" (1/1) ... [2020-10-27 01:50:09,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:50:09,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:50:09,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:50:09,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:50:09,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:09" (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 01:50:09,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:50:09,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:50:09,810 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:50:09,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 01:50:09,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:50:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:50:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:50:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:50:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:50:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:50:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:50:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:50:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:50:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:50:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:50:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:50:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:50:10,253 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:50:10,254 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 01:50:10,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:50:10 BoogieIcfgContainer [2020-10-27 01:50:10,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:50:10,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:50:10,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:50:10,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:50:10,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:50:09" (1/3) ... [2020-10-27 01:50:10,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b773314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:50:10, skipping insertion in model container [2020-10-27 01:50:10,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:50:09" (2/3) ... [2020-10-27 01:50:10,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b773314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:50:10, skipping insertion in model container [2020-10-27 01:50:10,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:50:10" (3/3) ... [2020-10-27 01:50:10,268 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_12.c [2020-10-27 01:50:10,281 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:50:10,287 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:50:10,301 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:50:10,338 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:50:10,338 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:50:10,338 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:50:10,339 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:50:10,339 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:50:10,339 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:50:10,339 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:50:10,339 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:50:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-27 01:50:10,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 01:50:10,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:50:10,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:50:10,362 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:50:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:50:10,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1507135652, now seen corresponding path program 1 times [2020-10-27 01:50:10,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:50:10,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112198611] [2020-10-27 01:50:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:50:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:50:10,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:50:10,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:50:10,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:50:10,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:50:10,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:50:10,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-27 01:50:10,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:50:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:50:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:50:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 01:50:10,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:50:11,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:50:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:50:11,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:50:11,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:50:11,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:50:11,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:50:11,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:50:11,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:50:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:50:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:50:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:50:11,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:50:11,088 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 01:50:11,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112198611] [2020-10-27 01:50:11,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:50:11,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:50:11,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669775424] [2020-10-27 01:50:11,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:50:11,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:50:11,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:50:11,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:50:11,115 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-10-27 01:50:11,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:50:11,451 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-27 01:50:11,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:50:11,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-27 01:50:11,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:50:11,462 INFO L225 Difference]: With dead ends: 49 [2020-10-27 01:50:11,462 INFO L226 Difference]: Without dead ends: 18 [2020-10-27 01:50:11,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:50:11,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-27 01:50:11,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-27 01:50:11,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-27 01:50:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-10-27 01:50:11,511 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2020-10-27 01:50:11,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:50:11,511 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-10-27 01:50:11,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:50:11,512 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-10-27 01:50:11,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 01:50:11,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:50:11,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:50:11,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:50:11,514 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:50:11,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:50:11,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1953512822, now seen corresponding path program 1 times [2020-10-27 01:50:11,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:50:11,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068614026] [2020-10-27 01:50:11,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:50:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:50:11,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:50:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:50:11,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:50:11,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:50:11,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:50:11,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-27 01:50:11,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:50:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:50:11,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:50:11,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 01:50:11,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:50:11,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:50:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:50:11,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:50:11,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:50:11,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:50:11,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:50:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:50:11,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:50:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:50:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:50:11,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:50:11,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:50:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:50:11,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068614026] [2020-10-27 01:50:11,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:50:11,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:50:11,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520720665] [2020-10-27 01:50:11,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:50:11,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:50:11,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:50:11,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:50:11,965 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2020-10-27 01:50:12,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:50:12,045 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-10-27 01:50:12,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:50:12,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-27 01:50:12,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:50:12,047 INFO L225 Difference]: With dead ends: 30 [2020-10-27 01:50:12,047 INFO L226 Difference]: Without dead ends: 21 [2020-10-27 01:50:12,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:50:12,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-27 01:50:12,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-10-27 01:50:12,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-27 01:50:12,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-27 01:50:12,057 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2020-10-27 01:50:12,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:50:12,057 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-27 01:50:12,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:50:12,058 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-27 01:50:12,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 01:50:12,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:50:12,059 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:50:12,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:50:12,059 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:50:12,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:50:12,060 INFO L82 PathProgramCache]: Analyzing trace with hash 556673393, now seen corresponding path program 1 times [2020-10-27 01:50:12,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:50:12,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72787013] [2020-10-27 01:50:12,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:50:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:50:12,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:50:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:50:12,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:50:12,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:50:12,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 01:50:12,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:50:12,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-27 01:50:12,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:50:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:50:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:50:12,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:50:12,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:50:12,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:50:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:50:12,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:50:12,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:50:12,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:50:12,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:50:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:50:12,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:50:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:50:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:50:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:50:12,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:50:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 01:50:12,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72787013] [2020-10-27 01:50:12,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:50:12,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 01:50:12,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232102100] [2020-10-27 01:50:12,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 01:50:12,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:50:12,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 01:50:12,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:50:12,603 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 7 states. [2020-10-27 01:50:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:50:12,837 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-10-27 01:50:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:50:12,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-27 01:50:12,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:50:12,838 INFO L225 Difference]: With dead ends: 20 [2020-10-27 01:50:12,838 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 01:50:12,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 01:50:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 01:50:12,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 01:50:12,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 01:50:12,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 01:50:12,841 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-27 01:50:12,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:50:12,841 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 01:50:12,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 01:50:12,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 01:50:12,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 01:50:12,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:50:12,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 01:50:13,123 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 01:50:13,124 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 01:50:13,124 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 01:50:13,124 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 01:50:13,125 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:50:13,125 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 01:50:13,125 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:50:13,125 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:50:13,125 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 01:50:13,125 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 01:50:13,126 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:50:13,126 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 6 17) the Hoare annotation is: true [2020-10-27 01:50:13,126 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 6 17) no Hoare annotation was computed. [2020-10-27 01:50:13,126 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-27 01:50:13,126 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 6 17) no Hoare annotation was computed. [2020-10-27 01:50:13,126 INFO L274 CegarLoopResult]: For program point L11(lines 11 12) no Hoare annotation was computed. [2020-10-27 01:50:13,126 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2020-10-27 01:50:13,127 INFO L270 CegarLoopResult]: At program point L10-2(lines 10 14) the Hoare annotation is: (or (let ((.cse0 (div main_~z~0 2))) (and (<= main_~z~0 (* 2 .cse0)) (< 0 .cse0))) (= main_~z~0 0)) [2020-10-27 01:50:13,127 INFO L270 CegarLoopResult]: At program point L10-3(lines 10 14) the Hoare annotation is: (or (let ((.cse0 (div main_~z~0 2))) (and (<= main_~z~0 (* 2 .cse0)) (< 0 .cse0))) (= main_~z~0 0)) [2020-10-27 01:50:13,127 INFO L274 CegarLoopResult]: For program point L4-4(line 4) no Hoare annotation was computed. [2020-10-27 01:50:13,127 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 4) the Hoare annotation is: true [2020-10-27 01:50:13,127 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 4) no Hoare annotation was computed. [2020-10-27 01:50:13,128 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-27 01:50:13,128 INFO L270 CegarLoopResult]: At program point L4-1(line 4) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-27 01:50:13,128 INFO L274 CegarLoopResult]: For program point L4-2(line 4) no Hoare annotation was computed. [2020-10-27 01:50:13,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:50:13 BoogieIcfgContainer [2020-10-27 01:50:13,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:50:13,149 INFO L168 Benchmark]: Toolchain (without parser) took 3687.50 ms. Allocated memory was 156.2 MB in the beginning and 194.0 MB in the end (delta: 37.7 MB). Free memory was 132.0 MB in the beginning and 136.1 MB in the end (delta: -4.1 MB). Peak memory consumption was 34.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:50:13,149 INFO L168 Benchmark]: CDTParser took 1.55 ms. Allocated memory is still 156.2 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:50:13,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.06 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 122.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:50:13,151 INFO L168 Benchmark]: Boogie Preprocessor took 34.43 ms. Allocated memory is still 156.2 MB. Free memory was 122.3 MB in the beginning and 120.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:50:13,152 INFO L168 Benchmark]: RCFGBuilder took 508.82 ms. Allocated memory is still 156.2 MB. Free memory was 120.8 MB in the beginning and 108.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:50:13,153 INFO L168 Benchmark]: TraceAbstraction took 2886.34 ms. Allocated memory was 156.2 MB in the beginning and 194.0 MB in the end (delta: 37.7 MB). Free memory was 107.6 MB in the beginning and 136.1 MB in the end (delta: -28.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:50:13,158 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.55 ms. Allocated memory is still 156.2 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 245.06 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 122.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.43 ms. Allocated memory is still 156.2 MB. Free memory was 122.3 MB in the beginning and 120.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 508.82 ms. Allocated memory is still 156.2 MB. Free memory was 120.8 MB in the beginning and 108.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2886.34 ms. Allocated memory was 156.2 MB in the beginning and 194.0 MB in the end (delta: 37.7 MB). Free memory was 107.6 MB in the beginning and 136.1 MB in the end (delta: -28.5 MB). Peak memory consumption was 10.6 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: 10]: Loop Invariant Derived loop invariant: (z <= 2 * (z / 2) && 0 < z / 2) || z == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 57 SDslu, 55 SDs, 0 SdLazy, 110 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 22 NumberOfFragments, 73 HoareAnnotationTreeSize, 17 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 241 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 3334 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 3/6 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...