/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=DEEPEST --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-invgen/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:18:51,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:18:51,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:18:51,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:18:51,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:18:51,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:18:51,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:18:51,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:18:51,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:18:51,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:18:51,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:18:51,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:18:51,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:18:51,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:18:51,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:18:51,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:18:51,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:18:51,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:18:51,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:18:51,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:18:51,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:18:51,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:18:51,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:18:51,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:18:51,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:18:51,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:18:51,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:18:51,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:18:51,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:18:51,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:18:51,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:18:51,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:18:51,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:18:51,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:18:51,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:18:51,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:18:51,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:18:51,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:18:51,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:18:51,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:18:51,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:18:51,546 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 20:18:51,598 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:18:51,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:18:51,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:18:51,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:18:51,606 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:18:51,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:18:51,607 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:18:51,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:18:51,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:18:51,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:18:51,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:18:51,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:18:51,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:18:51,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:18:51,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:18:51,610 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:18:51,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:18:51,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:18:51,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:18:51,610 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:18:51,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:18:51,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:18:51,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:18:51,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:18:51,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:18:51,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:18:51,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:18:51,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:18:51,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:18:51,613 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:18:52,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:18:52,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:18:52,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:18:52,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:18:52,114 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:18:52,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2020-10-27 20:18:52,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ad6b2b24/249013b4b1d94901b50f4735e5d1bf00/FLAG3ff0aeda1 [2020-10-27 20:18:52,817 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:18:52,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested6.i [2020-10-27 20:18:52,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ad6b2b24/249013b4b1d94901b50f4735e5d1bf00/FLAG3ff0aeda1 [2020-10-27 20:18:52,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ad6b2b24/249013b4b1d94901b50f4735e5d1bf00 [2020-10-27 20:18:52,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:18:52,864 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:18:52,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:18:52,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:18:52,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:18:52,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:18:52" (1/1) ... [2020-10-27 20:18:52,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ebe2121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:52, skipping insertion in model container [2020-10-27 20:18:52,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:18:52" (1/1) ... [2020-10-27 20:18:52,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:18:52,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:18:53,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:18:53,094 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:18:53,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:18:53,141 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:18:53,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:53 WrapperNode [2020-10-27 20:18:53,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:18:53,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:18:53,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:18:53,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:18:53,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:53" (1/1) ... [2020-10-27 20:18:53,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:53" (1/1) ... [2020-10-27 20:18:53,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:53" (1/1) ... [2020-10-27 20:18:53,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:53" (1/1) ... [2020-10-27 20:18:53,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:53" (1/1) ... [2020-10-27 20:18:53,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:53" (1/1) ... [2020-10-27 20:18:53,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:53" (1/1) ... [2020-10-27 20:18:53,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:18:53,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:18:53,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:18:53,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:18:53,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:53" (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 20:18:53,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:18:53,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:18:53,326 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:18:53,327 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 20:18:53,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:18:53,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:18:53,327 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:18:53,328 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:18:53,328 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 20:18:53,328 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 20:18:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:18:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:18:53,329 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 20:18:53,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:18:53,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 20:18:53,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:18:53,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:18:53,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:18:53,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:18:53,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:18:53,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:18:53,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:18:53,913 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:18:53,914 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 20:18:53,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:18:53 BoogieIcfgContainer [2020-10-27 20:18:53,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:18:53,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:18:53,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:18:53,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:18:53,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:18:52" (1/3) ... [2020-10-27 20:18:53,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a249159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:18:53, skipping insertion in model container [2020-10-27 20:18:53,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:53" (2/3) ... [2020-10-27 20:18:53,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a249159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:18:53, skipping insertion in model container [2020-10-27 20:18:53,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:18:53" (3/3) ... [2020-10-27 20:18:53,945 INFO L111 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-10-27 20:18:53,962 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:18:53,971 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:18:53,990 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:18:54,044 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:18:54,045 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:18:54,045 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:18:54,045 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:18:54,045 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:18:54,046 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:18:54,046 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:18:54,046 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:18:54,076 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 20:18:54,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 20:18:54,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:18:54,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:18:54,091 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:18:54,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:18:54,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1957209487, now seen corresponding path program 1 times [2020-10-27 20:18:54,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:18:54,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697745812] [2020-10-27 20:18:54,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:18:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:18:54,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:54,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:18:54,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 20:18:54,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:18:54,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-27 20:18:54,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:18:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:18:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:18:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:18:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 20:18:54,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:18:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:18:54,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:54,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:18:54,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:18:54,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:18:54,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:18:54,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:18:54,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:18:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:18:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:18:54,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:18:54,850 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 20:18:54,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697745812] [2020-10-27 20:18:54,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:18:54,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:18:54,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725945806] [2020-10-27 20:18:54,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:18:54,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:18:54,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:18:54,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:18:54,876 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 6 states. [2020-10-27 20:18:55,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:18:55,251 INFO L93 Difference]: Finished difference Result 65 states and 91 transitions. [2020-10-27 20:18:55,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:18:55,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-27 20:18:55,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:18:55,262 INFO L225 Difference]: With dead ends: 65 [2020-10-27 20:18:55,263 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 20:18:55,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:18:55,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 20:18:55,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-27 20:18:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 20:18:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 20:18:55,317 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 18 [2020-10-27 20:18:55,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:18:55,317 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 20:18:55,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:18:55,318 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 20:18:55,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 20:18:55,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:18:55,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:18:55,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:18:55,321 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:18:55,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:18:55,322 INFO L82 PathProgramCache]: Analyzing trace with hash 807153860, now seen corresponding path program 1 times [2020-10-27 20:18:55,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:18:55,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410578404] [2020-10-27 20:18:55,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:18:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:18:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:55,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:18:55,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 20:18:55,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:18:55,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-27 20:18:55,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:18:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:18:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:18:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 20:18:55,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:18:55,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:18:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:18:55,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:55,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:18:55,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:18:55,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:18:55,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:18:55,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:18:55,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:18:55,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:18:55,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:18:55,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:18:55,605 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 20:18:55,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410578404] [2020-10-27 20:18:55,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:18:55,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:18:55,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007820948] [2020-10-27 20:18:55,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:18:55,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:18:55,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:18:55,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:18:55,609 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-27 20:18:56,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:18:56,106 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2020-10-27 20:18:56,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:18:56,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-27 20:18:56,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:18:56,110 INFO L225 Difference]: With dead ends: 55 [2020-10-27 20:18:56,111 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 20:18:56,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:18:56,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 20:18:56,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2020-10-27 20:18:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 20:18:56,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-10-27 20:18:56,155 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 19 [2020-10-27 20:18:56,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:18:56,155 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-10-27 20:18:56,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:18:56,156 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-10-27 20:18:56,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 20:18:56,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:18:56,159 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:18:56,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:18:56,160 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:18:56,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:18:56,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1528075300, now seen corresponding path program 1 times [2020-10-27 20:18:56,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:18:56,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101197269] [2020-10-27 20:18:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:18:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:18:56,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:56,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:18:56,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 20:18:56,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:18:56,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 20:18:56,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:18:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:18:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:18:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 20:18:56,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:18:56,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:18:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:18:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:56,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:18:56,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:18:56,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:18:56,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:18:56,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:18:56,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:18:56,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:18:56,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:18:56,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:18:56,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-27 20:18:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:18:56,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:56,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:18:56,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:18:56,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:18:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:18:56,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:18:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:18:56,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:18:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:18:56,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:18:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:18:56,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101197269] [2020-10-27 20:18:56,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:18:56,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:18:56,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516253744] [2020-10-27 20:18:56,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:18:56,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:18:56,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:18:56,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:18:56,483 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 6 states. [2020-10-27 20:18:56,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:18:56,767 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2020-10-27 20:18:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:18:56,767 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-27 20:18:56,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:18:56,769 INFO L225 Difference]: With dead ends: 57 [2020-10-27 20:18:56,769 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 20:18:56,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:18:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 20:18:56,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-27 20:18:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-27 20:18:56,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2020-10-27 20:18:56,784 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 23 [2020-10-27 20:18:56,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:18:56,785 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-10-27 20:18:56,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:18:56,785 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2020-10-27 20:18:56,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 20:18:56,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:18:56,786 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:18:56,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:18:56,787 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:18:56,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:18:56,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1147956109, now seen corresponding path program 1 times [2020-10-27 20:18:56,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:18:56,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750177714] [2020-10-27 20:18:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:18:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:18:56,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:56,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:56,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:56,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:57,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:57,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:18:57,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 20:18:57,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:18:57,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-27 20:18:57,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:18:57,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:18:57,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 20:18:57,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:18:57,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 20:18:57,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:18:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:18:57,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:58,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:18:58,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:18:58,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:18:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:18:58,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:18:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:18:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:18:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:18:58,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:18:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:18:58,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750177714] [2020-10-27 20:18:58,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:18:58,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 20:18:58,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802168872] [2020-10-27 20:18:58,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:18:58,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:18:58,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:18:58,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:18:58,027 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand 7 states. [2020-10-27 20:18:58,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:18:58,330 INFO L93 Difference]: Finished difference Result 95 states and 119 transitions. [2020-10-27 20:18:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:18:58,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-27 20:18:58,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:18:58,333 INFO L225 Difference]: With dead ends: 95 [2020-10-27 20:18:58,333 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 20:18:58,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:18:58,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 20:18:58,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2020-10-27 20:18:58,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-27 20:18:58,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2020-10-27 20:18:58,361 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 23 [2020-10-27 20:18:58,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:18:58,362 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2020-10-27 20:18:58,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:18:58,362 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2020-10-27 20:18:58,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 20:18:58,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:18:58,367 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:18:58,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:18:58,367 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:18:58,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:18:58,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1848767554, now seen corresponding path program 1 times [2020-10-27 20:18:58,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:18:58,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685534709] [2020-10-27 20:18:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:18:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:18:58,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:58,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:58,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:58,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:58,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:58,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:58,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:59,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:59,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:59,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:18:59,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:02,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:02,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 20:19:02,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 20:19:02,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3624 [2020-10-27 20:19:02,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 20:19:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 20:19:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 20:19:02,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:02,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:02,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:02,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:02,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:02,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:02,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:19:02,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:02,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:02,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 20:19:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:02,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:02,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:02,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:19:02,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:02,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 20:19:02,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 20:19:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:02,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 20:19:02,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685534709] [2020-10-27 20:19:02,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:02,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:19:02,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657598848] [2020-10-27 20:19:02,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:19:02,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:02,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:19:02,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:19:02,079 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand 5 states. [2020-10-27 20:19:02,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:02,228 INFO L93 Difference]: Finished difference Result 90 states and 113 transitions. [2020-10-27 20:19:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 20:19:02,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-27 20:19:02,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:02,230 INFO L225 Difference]: With dead ends: 90 [2020-10-27 20:19:02,230 INFO L226 Difference]: Without dead ends: 55 [2020-10-27 20:19:02,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:19:02,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-27 20:19:02,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-27 20:19:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-27 20:19:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2020-10-27 20:19:02,242 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 30 [2020-10-27 20:19:02,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:02,243 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2020-10-27 20:19:02,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:19:02,243 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2020-10-27 20:19:02,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 20:19:02,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:02,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:02,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:19:02,245 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:02,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:02,245 INFO L82 PathProgramCache]: Analyzing trace with hash -377330401, now seen corresponding path program 1 times [2020-10-27 20:19:02,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:02,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634769044] [2020-10-27 20:19:02,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:02,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:02,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:02,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:02,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:03,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:03,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 20:19:03,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:19:03,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-10-27 20:19:03,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 20:19:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 20:19:03,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 20:19:03,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:03,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:03,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:03,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:03,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:03,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:03,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 20:19:03,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:03,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:03,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:03,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:03,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:19:03,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:19:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:03,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:03,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:03,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:19:03,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 20:19:03,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:19:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:19:03,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 20:19:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:03,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634769044] [2020-10-27 20:19:03,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:19:03,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 20:19:03,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795642478] [2020-10-27 20:19:03,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:19:03,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:03,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:19:03,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:19:03,505 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 11 states. [2020-10-27 20:19:04,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:04,376 INFO L93 Difference]: Finished difference Result 82 states and 103 transitions. [2020-10-27 20:19:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 20:19:04,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-27 20:19:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:04,380 INFO L225 Difference]: With dead ends: 82 [2020-10-27 20:19:04,380 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 20:19:04,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-10-27 20:19:04,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 20:19:04,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 47. [2020-10-27 20:19:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-27 20:19:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-10-27 20:19:04,409 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2020-10-27 20:19:04,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:04,409 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-10-27 20:19:04,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:19:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-10-27 20:19:04,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 20:19:04,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:04,411 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:04,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:19:04,411 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:04,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:04,412 INFO L82 PathProgramCache]: Analyzing trace with hash -750574849, now seen corresponding path program 1 times [2020-10-27 20:19:04,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:04,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855328030] [2020-10-27 20:19:04,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:04,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:04,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:04,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:04,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:06,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:06,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 20:19:06,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 20:19:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1822 [2020-10-27 20:19:06,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:19:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 20:19:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 20:19:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:06,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:06,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:06,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:06,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:06,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:06,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:19:06,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:06,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:06,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:06,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:06,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:06,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:19:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:06,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:06,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:06,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:19:06,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:06,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:19:06,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:19:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:19:06,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:06,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 20:19:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:06,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:06,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:06,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:19:06,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:19:06,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:06,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:19:06,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:19:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 20:19:06,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855328030] [2020-10-27 20:19:06,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:06,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:19:06,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154161532] [2020-10-27 20:19:06,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:19:06,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:06,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:19:06,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:19:06,347 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 7 states. [2020-10-27 20:19:06,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:06,620 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-10-27 20:19:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 20:19:06,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-10-27 20:19:06,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:06,621 INFO L225 Difference]: With dead ends: 47 [2020-10-27 20:19:06,621 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 20:19:06,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:19:06,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 20:19:06,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 20:19:06,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 20:19:06,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 20:19:06,622 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-10-27 20:19:06,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:06,623 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 20:19:06,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:19:06,623 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 20:19:06,623 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 20:19:06,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 20:19:06,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 20:19:07,255 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-27 20:19:07,255 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-27 20:19:07,256 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-27 20:19:07,256 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-27 20:19:07,256 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-27 20:19:07,256 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:19:07,256 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-27 20:19:07,256 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:19:07,256 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:19:07,256 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 20:19:07,257 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 20:19:07,257 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:19:07,257 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-27 20:19:07,257 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-27 20:19:07,257 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-27 20:19:07,257 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-27 20:19:07,257 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 48) no Hoare annotation was computed. [2020-10-27 20:19:07,257 INFO L270 CegarLoopResult]: At program point L36-2(lines 36 38) the Hoare annotation is: (and (let ((.cse1 (* 2 main_~i~0))) (let ((.cse0 (<= .cse1 main_~k~0)) (.cse2 (<= (+ main_~j~0 1) main_~n~0))) (or (and .cse0 (<= (+ .cse1 1) main_~j~0) .cse2) (and .cse0 .cse2 (= (* main_~i~0 2) main_~j~0))))) (<= main_~k~0 main_~n~0)) [2020-10-27 20:19:07,258 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-10-27 20:19:07,258 INFO L270 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-10-27 20:19:07,258 INFO L270 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~j~0 1) main_~n~0) (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-10-27 20:19:07,258 INFO L270 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= (+ main_~k~0 1) main_~n~0) (let ((.cse1 (* 2 main_~i~0))) (let ((.cse0 (<= .cse1 main_~k~0))) (or (and .cse0 (<= (+ .cse1 1) main_~j~0) (<= (+ main_~j~0 1) main_~n~0)) (and .cse0 (= (* main_~i~0 2) main_~j~0)))))) [2020-10-27 20:19:07,258 INFO L274 CegarLoopResult]: For program point L37-1(lines 36 38) no Hoare annotation was computed. [2020-10-27 20:19:07,258 INFO L274 CegarLoopResult]: For program point L33-2(lines 33 45) no Hoare annotation was computed. [2020-10-27 20:19:07,259 INFO L270 CegarLoopResult]: At program point L33-3(lines 33 45) the Hoare annotation is: (and (<= main_~n~0 main_~k~0) (<= main_~k~0 main_~n~0)) [2020-10-27 20:19:07,259 INFO L274 CegarLoopResult]: For program point L29(lines 29 32) no Hoare annotation was computed. [2020-10-27 20:19:07,259 INFO L274 CegarLoopResult]: For program point L29-1(lines 29 32) no Hoare annotation was computed. [2020-10-27 20:19:07,259 INFO L277 CegarLoopResult]: At program point L46(lines 24 48) the Hoare annotation is: true [2020-10-27 20:19:07,259 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 48) no Hoare annotation was computed. [2020-10-27 20:19:07,259 INFO L274 CegarLoopResult]: For program point L42(lines 34 44) no Hoare annotation was computed. [2020-10-27 20:19:07,259 INFO L270 CegarLoopResult]: At program point L34-2(lines 34 44) the Hoare annotation is: (and (let ((.cse0 (<= main_~n~0 main_~k~0))) (or (and (<= (+ (* 2 main_~i~0) 1) main_~j~0) .cse0) (and .cse0 (= (* main_~i~0 2) main_~j~0)))) (<= main_~k~0 main_~n~0)) [2020-10-27 20:19:07,259 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 48) the Hoare annotation is: true [2020-10-27 20:19:07,259 INFO L274 CegarLoopResult]: For program point L35(lines 35 43) no Hoare annotation was computed. [2020-10-27 20:19:07,259 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-27 20:19:07,260 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-27 20:19:07,260 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-27 20:19:07,260 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-27 20:19:07,260 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-27 20:19:07,260 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-27 20:19:07,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:19:07 BoogieIcfgContainer [2020-10-27 20:19:07,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:19:07,284 INFO L168 Benchmark]: Toolchain (without parser) took 14424.27 ms. Allocated memory was 151.0 MB in the beginning and 323.0 MB in the end (delta: 172.0 MB). Free memory was 126.4 MB in the beginning and 202.4 MB in the end (delta: -76.0 MB). Peak memory consumption was 96.6 MB. Max. memory is 8.0 GB. [2020-10-27 20:19:07,285 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 122.2 MB in the beginning and 122.1 MB in the end (delta: 76.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:19:07,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.71 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 116.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:19:07,287 INFO L168 Benchmark]: Boogie Preprocessor took 75.43 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 20:19:07,287 INFO L168 Benchmark]: RCFGBuilder took 695.93 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 98.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-27 20:19:07,288 INFO L168 Benchmark]: TraceAbstraction took 13347.51 ms. Allocated memory was 151.0 MB in the beginning and 323.0 MB in the end (delta: 172.0 MB). Free memory was 134.0 MB in the beginning and 202.4 MB in the end (delta: -68.4 MB). Peak memory consumption was 103.3 MB. Max. memory is 8.0 GB. [2020-10-27 20:19:07,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 122.2 MB in the beginning and 122.1 MB in the end (delta: 76.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 276.71 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 116.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.43 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 695.93 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 98.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13347.51 ms. Allocated memory was 151.0 MB in the beginning and 323.0 MB in the end (delta: 172.0 MB). Free memory was 134.0 MB in the beginning and 202.4 MB in the end (delta: -68.4 MB). Peak memory consumption was 103.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 36]: Loop Invariant Derived loop invariant: (((2 * i <= k && 2 * i + 1 <= j) && j + 1 <= n) || ((2 * i <= k && j + 1 <= n) && i * 2 == j)) && k <= n - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: n <= k && k <= n - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((2 * i + 1 <= j && n <= k) || (n <= k && i * 2 == j)) && k <= n - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.5s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 176 SDtfs, 238 SDslu, 225 SDs, 0 SdLazy, 861 SolverSat, 152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 50 PreInvPairs, 63 NumberOfFragments, 175 HoareAnnotationTreeSize, 50 FomulaSimplifications, 2371 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 14 FomulaSimplificationsInter, 531 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 12330 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 25/31 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...