/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:01:45,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:01:45,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:01:45,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:01:45,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:01:45,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:01:45,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:01:45,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:01:45,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:01:45,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:01:45,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:01:45,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:01:45,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:01:45,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:01:45,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:01:45,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:01:45,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:01:45,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:01:45,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:01:45,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:01:45,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:01:45,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:01:45,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:01:45,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:01:45,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:01:45,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:01:45,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:01:45,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:01:45,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:01:45,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:01:45,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:01:45,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:01:45,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:01:45,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:01:45,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:01:45,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:01:45,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:01:45,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:01:45,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:01:45,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:01:45,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:01:45,471 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 [2020-10-28 15:01:45,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:01:45,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:01:45,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:01:45,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:01:45,502 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:01:45,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:01:45,503 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:01:45,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:01:45,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:01:45,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:01:45,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:01:45,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:01:45,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:01:45,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:01:45,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:01:45,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:01:45,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:01:45,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:01:45,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:01:45,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:01:45,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:01:45,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:01:45,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:01:45,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:01:45,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:01:45,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:01:45,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:01:45,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:01:45,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:01:45,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:01:45,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:01:45,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:01:45,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:01:45,920 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:01:45,921 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:01:45,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-10-28 15:01:46,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbbb301a1/515ef107fb3945a7bf9998f7d5aeeeff/FLAG516236d5e [2020-10-28 15:01:46,645 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:01:46,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-10-28 15:01:46,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbbb301a1/515ef107fb3945a7bf9998f7d5aeeeff/FLAG516236d5e [2020-10-28 15:01:47,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbbb301a1/515ef107fb3945a7bf9998f7d5aeeeff [2020-10-28 15:01:47,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:01:47,017 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:01:47,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:01:47,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:01:47,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:01:47,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:01:47" (1/1) ... [2020-10-28 15:01:47,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a78c7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:47, skipping insertion in model container [2020-10-28 15:01:47,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:01:47" (1/1) ... [2020-10-28 15:01:47,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:01:47,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:01:47,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:01:47,232 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:01:47,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:01:47,270 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:01:47,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:47 WrapperNode [2020-10-28 15:01:47,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:01:47,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:01:47,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:01:47,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:01:47,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:47" (1/1) ... [2020-10-28 15:01:47,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:47" (1/1) ... [2020-10-28 15:01:47,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:47" (1/1) ... [2020-10-28 15:01:47,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:47" (1/1) ... [2020-10-28 15:01:47,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:47" (1/1) ... [2020-10-28 15:01:47,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:47" (1/1) ... [2020-10-28 15:01:47,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:47" (1/1) ... [2020-10-28 15:01:47,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:01:47,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:01:47,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:01:47,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:01:47,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:47" (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 [2020-10-28 15:01:47,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:01:47,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:01:47,401 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:01:47,402 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 15:01:47,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 15:01:47,403 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:01:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:01:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:01:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 15:01:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 15:01:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:01:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:01:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 15:01:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:01:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 15:01:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:01:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:01:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:01:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:01:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:01:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:01:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:01:47,957 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:01:47,957 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 15:01:47,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:01:47 BoogieIcfgContainer [2020-10-28 15:01:47,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:01:47,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:01:47,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:01:47,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:01:47,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:01:47" (1/3) ... [2020-10-28 15:01:47,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e18f888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:01:47, skipping insertion in model container [2020-10-28 15:01:47,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:01:47" (2/3) ... [2020-10-28 15:01:47,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e18f888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:01:47, skipping insertion in model container [2020-10-28 15:01:47,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:01:47" (3/3) ... [2020-10-28 15:01:47,976 INFO L111 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2020-10-28 15:01:48,001 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:01:48,010 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:01:48,024 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:01:48,069 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:01:48,069 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:01:48,069 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:01:48,070 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:01:48,070 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:01:48,070 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:01:48,070 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:01:48,070 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:01:48,095 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-28 15:01:48,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 15:01:48,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:01:48,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:01:48,104 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:01:48,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:01:48,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1858276272, now seen corresponding path program 1 times [2020-10-28 15:01:48,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:01:48,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903795667] [2020-10-28 15:01:48,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:01:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:48,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:48,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:48,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 15:01:48,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:48,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-28 15:01:48,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:48,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:01:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 15:01:48,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:01:48,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-28 15:01:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:01:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:48,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:48,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:48,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:01:48,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:01:48,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:48,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:01:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:01:48,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:48,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:01:48,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903795667] [2020-10-28 15:01:48,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:01:48,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:01:48,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803709019] [2020-10-28 15:01:48,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:01:48,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:01:48,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:01:48,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:01:48,870 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 6 states. [2020-10-28 15:01:49,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:01:49,302 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2020-10-28 15:01:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:01:49,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-28 15:01:49,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:01:49,315 INFO L225 Difference]: With dead ends: 56 [2020-10-28 15:01:49,315 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 15:01:49,319 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 [2020-10-28 15:01:49,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 15:01:49,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-28 15:01:49,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 15:01:49,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-28 15:01:49,374 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 15 [2020-10-28 15:01:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:01:49,375 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-28 15:01:49,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:01:49,375 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-28 15:01:49,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 15:01:49,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:01:49,377 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:01:49,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:01:49,378 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:01:49,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:01:49,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1093378590, now seen corresponding path program 1 times [2020-10-28 15:01:49,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:01:49,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269776243] [2020-10-28 15:01:49,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:01:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:49,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:49,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:49,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 15:01:49,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:01:49,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-28 15:01:49,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:49,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:01:49,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:01:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 15:01:49,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 15:01:49,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:01:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:49,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:49,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:49,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:01:49,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:49,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:01:49,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:49,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:49,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:01:49,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:49,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:01:49,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:49,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:01:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:49,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:50,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:50,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:50,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:50,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:01:50,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:50,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:50,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:50,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:50,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:50,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:01:50,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269776243] [2020-10-28 15:01:50,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:01:50,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 15:01:50,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100680764] [2020-10-28 15:01:50,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:01:50,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:01:50,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:01:50,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:01:50,015 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-10-28 15:01:50,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:01:50,458 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-10-28 15:01:50,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:01:50,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-28 15:01:50,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:01:50,461 INFO L225 Difference]: With dead ends: 36 [2020-10-28 15:01:50,461 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 15:01:50,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-28 15:01:50,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 15:01:50,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 15:01:50,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 15:01:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-10-28 15:01:50,473 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 20 [2020-10-28 15:01:50,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:01:50,474 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-10-28 15:01:50,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:01:50,474 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-10-28 15:01:50,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 15:01:50,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:01:50,475 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:01:50,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:01:50,476 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:01:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:01:50,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1089500752, now seen corresponding path program 1 times [2020-10-28 15:01:50,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:01:50,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245805677] [2020-10-28 15:01:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:01:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:50,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:50,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:50,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:50,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 15:01:50,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:01:50,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-28 15:01:50,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:50,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:50,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:01:50,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 15:01:50,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 15:01:50,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:50,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:01:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:50,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:50,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:50,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:01:50,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 15:01:50,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:50,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:01:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:01:50,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:50,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:01:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:50,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:50,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:50,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:50,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:50,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:01:50,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:01:50,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:50,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:50,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:50,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:50,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:50,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:50,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 15:01:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:50,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:50,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:50,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:50,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:50,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:01:50,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:50,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:50,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:01:50,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 15:01:50,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245805677] [2020-10-28 15:01:50,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:01:50,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 15:01:50,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387566455] [2020-10-28 15:01:50,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:01:50,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:01:50,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:01:50,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:01:50,865 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2020-10-28 15:01:51,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:01:51,217 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-10-28 15:01:51,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:01:51,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-28 15:01:51,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:01:51,219 INFO L225 Difference]: With dead ends: 40 [2020-10-28 15:01:51,219 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 15:01:51,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:01:51,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 15:01:51,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-28 15:01:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 15:01:51,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-10-28 15:01:51,229 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 27 [2020-10-28 15:01:51,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:01:51,230 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-10-28 15:01:51,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:01:51,230 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-10-28 15:01:51,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 15:01:51,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:01:51,231 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:01:51,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:01:51,232 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:01:51,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:01:51,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1123935262, now seen corresponding path program 2 times [2020-10-28 15:01:51,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:01:51,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225415363] [2020-10-28 15:01:51,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:01:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:51,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:51,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:51,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:51,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 15:01:51,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:01:51,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 15:01:51,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:51,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:01:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 15:01:51,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 15:01:51,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:51,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:01:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:51,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:51,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:51,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:01:51,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:51,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:01:51,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:51,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:51,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:01:51,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:51,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:01:51,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:51,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:01:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:51,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:51,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:51,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:51,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:51,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:01:51,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:51,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:51,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:51,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:51,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 15:01:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:51,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:51,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:51,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:51,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:51,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:01:51,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:51,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:51,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:51,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:51,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 15:01:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:51,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:51,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:51,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:51,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:51,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:01:51,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:51,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:51,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:51,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:51,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:51,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 15:01:51,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225415363] [2020-10-28 15:01:51,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:01:51,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 15:01:51,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814217710] [2020-10-28 15:01:51,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:01:51,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:01:51,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:01:51,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:01:51,571 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 8 states. [2020-10-28 15:01:51,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:01:51,960 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-10-28 15:01:51,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:01:51,961 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-28 15:01:51,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:01:51,962 INFO L225 Difference]: With dead ends: 48 [2020-10-28 15:01:51,962 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 15:01:51,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-28 15:01:51,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 15:01:51,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-28 15:01:51,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 15:01:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-10-28 15:01:51,986 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 32 [2020-10-28 15:01:51,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:01:51,986 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-10-28 15:01:51,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:01:51,986 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-10-28 15:01:51,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-28 15:01:51,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:01:51,990 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:01:51,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 15:01:51,990 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:01:51,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:01:51,991 INFO L82 PathProgramCache]: Analyzing trace with hash -511891938, now seen corresponding path program 3 times [2020-10-28 15:01:51,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:01:51,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237793986] [2020-10-28 15:01:51,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:01:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:52,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:52,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:52,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 15:01:52,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:52,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 15:01:52,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:52,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:01:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 15:01:52,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 15:01:52,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 15:01:52,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:01:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:52,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:52,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:52,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:01:52,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:52,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:01:52,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:52,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:01:52,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:52,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:01:52,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:52,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 15:01:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:52,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:52,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:52,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:52,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:01:52,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:52,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:52,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:52,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-28 15:01:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:52,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:52,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:52,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:52,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:52,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 15:01:52,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:52,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:52,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:52,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:52,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:52,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:52,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 15:01:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:52,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:52,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:52,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:52,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:52,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 15:01:52,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:52,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:52,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:52,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:52,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:52,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:52,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 15:01:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:52,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:52,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:52,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:52,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:52,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:01:52,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:52,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:52,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:52,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 15:01:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:01:52,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:01:52,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:01:52,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:01:52,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:01:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:01:52,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:01:52,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:01:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:01:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:01:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:01:52,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:01:52,311 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-28 15:01:52,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237793986] [2020-10-28 15:01:52,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:01:52,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 15:01:52,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759599268] [2020-10-28 15:01:52,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:01:52,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:01:52,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:01:52,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:01:52,314 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 7 states. [2020-10-28 15:01:52,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:01:52,535 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-10-28 15:01:52,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:01:52,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-10-28 15:01:52,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:01:52,538 INFO L225 Difference]: With dead ends: 43 [2020-10-28 15:01:52,538 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 15:01:52,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:01:52,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 15:01:52,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 15:01:52,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 15:01:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 15:01:52,540 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-10-28 15:01:52,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:01:52,542 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 15:01:52,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:01:52,544 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 15:01:52,544 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 15:01:52,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 15:01:52,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 15:01:52,906 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-28 15:01:52,906 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-28 15:01:52,907 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-28 15:01:52,907 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-28 15:01:52,907 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-28 15:01:52,907 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:01:52,907 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)|)) [2020-10-28 15:01:52,907 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:01:52,908 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:01:52,908 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 15:01:52,908 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 15:01:52,908 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:01:52,908 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-28 15:01:52,908 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-28 15:01:52,908 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-28 15:01:52,908 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-28 15:01:52,909 INFO L274 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-10-28 15:01:52,909 INFO L274 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-10-28 15:01:52,909 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 45) the Hoare annotation is: true [2020-10-28 15:01:52,909 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 45) no Hoare annotation was computed. [2020-10-28 15:01:52,909 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 45) no Hoare annotation was computed. [2020-10-28 15:01:52,909 INFO L277 CegarLoopResult]: At program point L44(lines 25 45) the Hoare annotation is: true [2020-10-28 15:01:52,909 INFO L274 CegarLoopResult]: For program point L42(lines 38 43) no Hoare annotation was computed. [2020-10-28 15:01:52,910 INFO L270 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (let ((.cse0 (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0))) (or (and (<= 1 main_~glob2_p_off~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) .cse0) (and .cse0 (<= (+ main_~glob2_p_off~0 1) main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)))) [2020-10-28 15:01:52,910 INFO L270 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (let ((.cse0 (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0))) (or (and (<= 1 main_~glob2_p_off~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) .cse0) (and .cse0 (<= (+ main_~glob2_p_off~0 1) main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)))) [2020-10-28 15:01:52,910 INFO L270 CegarLoopResult]: At program point L38-2(lines 38 43) the Hoare annotation is: (let ((.cse0 (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0))) (or (and (<= 1 main_~MAXPATHLEN~0) (<= 1 main_~glob2_p_off~0) .cse0) (and .cse0 (<= (+ main_~glob2_p_off~0 1) main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)))) [2020-10-28 15:01:52,910 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-28 15:01:52,910 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-28 15:01:52,911 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-28 15:01:52,911 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-28 15:01:52,911 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-28 15:01:52,911 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-28 15:01:52,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:01:52 BoogieIcfgContainer [2020-10-28 15:01:52,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:01:52,934 INFO L168 Benchmark]: Toolchain (without parser) took 5920.48 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 130.3 MB in the beginning and 106.1 MB in the end (delta: 24.2 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:52,934 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory is still 126.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:01:52,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.00 ms. Allocated memory is still 154.1 MB. Free memory was 129.8 MB in the beginning and 119.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:52,936 INFO L168 Benchmark]: Boogie Preprocessor took 38.91 ms. Allocated memory is still 154.1 MB. Free memory was 119.7 MB in the beginning and 118.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:52,937 INFO L168 Benchmark]: RCFGBuilder took 648.23 ms. Allocated memory is still 154.1 MB. Free memory was 118.2 MB in the beginning and 104.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:52,938 INFO L168 Benchmark]: TraceAbstraction took 4965.36 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 104.0 MB in the beginning and 106.1 MB in the end (delta: -2.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:01:52,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory is still 126.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 252.00 ms. Allocated memory is still 154.1 MB. Free memory was 129.8 MB in the beginning and 119.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.91 ms. Allocated memory is still 154.1 MB. Free memory was 119.7 MB in the beginning and 118.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 648.23 ms. Allocated memory is still 154.1 MB. Free memory was 118.2 MB in the beginning and 104.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4965.36 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 104.0 MB in the beginning and 106.1 MB in the end (delta: -2.1 MB). Peak memory consumption was 30.4 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: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((1 <= MAXPATHLEN && 1 <= glob2_p_off) && glob2_pathlim_off <= MAXPATHLEN) || ((glob2_pathlim_off <= MAXPATHLEN && glob2_p_off + 1 <= MAXPATHLEN) && 0 <= glob2_p_off) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 5, TraceHistogramMax: 6, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 101 SDslu, 136 SDs, 0 SdLazy, 338 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 29 PreInvPairs, 38 NumberOfFragments, 104 HoareAnnotationTreeSize, 29 FomulaSimplifications, 174 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 301 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 10219 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 86/93 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...