/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-regression/test23-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:19:27,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:19:27,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:19:27,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:19:27,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:19:27,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:19:27,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:19:27,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:19:27,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:19:27,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:19:27,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:19:27,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:19:27,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:19:27,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:19:27,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:19:27,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:19:27,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:19:27,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:19:27,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:19:27,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:19:27,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:19:27,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:19:27,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:19:27,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:19:27,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:19:27,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:19:27,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:19:27,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:19:27,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:19:27,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:19:27,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:19:27,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:19:27,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:19:27,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:19:27,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:19:27,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:19:27,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:19:27,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:19:27,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:19:27,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:19:27,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:19:27,481 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:19:27,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:19:27,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:19:27,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:19:27,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:19:27,558 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:19:27,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:19:27,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:19:27,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:19:27,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:19:27,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:19:27,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:19:27,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:19:27,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:19:27,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:19:27,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:19:27,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:19:27,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:19:27,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:19:27,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:19:27,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:19:27,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:19:27,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:19:27,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:19:27,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:19:27,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:19:27,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:19:27,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:19:27,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:19:27,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:19:27,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:19:27,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:19:28,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:19:28,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:19:28,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:19:28,026 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:19:28,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test23-2.c [2020-10-29 09:19:28,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3e89c659/f6d5e47d0f584bf6b7d33fde33dd0485/FLAGea2b292cf [2020-10-29 09:19:28,801 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:19:28,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test23-2.c [2020-10-29 09:19:28,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3e89c659/f6d5e47d0f584bf6b7d33fde33dd0485/FLAGea2b292cf [2020-10-29 09:19:29,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3e89c659/f6d5e47d0f584bf6b7d33fde33dd0485 [2020-10-29 09:19:29,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:19:29,164 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:19:29,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:19:29,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:19:29,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:19:29,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:19:29" (1/1) ... [2020-10-29 09:19:29,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@189ff166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:29, skipping insertion in model container [2020-10-29 09:19:29,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:19:29" (1/1) ... [2020-10-29 09:19:29,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:19:29,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:19:29,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:19:29,399 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:19:29,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:19:29,442 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:19:29,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:29 WrapperNode [2020-10-29 09:19:29,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:19:29,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:19:29,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:19:29,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:19:29,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:29" (1/1) ... [2020-10-29 09:19:29,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:29" (1/1) ... [2020-10-29 09:19:29,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:29" (1/1) ... [2020-10-29 09:19:29,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:29" (1/1) ... [2020-10-29 09:19:29,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:29" (1/1) ... [2020-10-29 09:19:29,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:29" (1/1) ... [2020-10-29 09:19:29,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:29" (1/1) ... [2020-10-29 09:19:29,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:19:29,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:19:29,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:19:29,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:19:29,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:19:29,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:19:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:19:29,681 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:19:29,682 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 09:19:29,683 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-10-29 09:19:29,684 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 09:19:29,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:19:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:19:29,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:19:29,685 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:19:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:19:29,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:19:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 09:19:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 09:19:29,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:19:29,688 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-10-29 09:19:29,689 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 09:19:29,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:19:29,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:19:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:19:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:19:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:19:29,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:19:30,147 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:19:30,147 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:19:30,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:19:30 BoogieIcfgContainer [2020-10-29 09:19:30,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:19:30,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:19:30,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:19:30,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:19:30,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:19:29" (1/3) ... [2020-10-29 09:19:30,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c832e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:19:30, skipping insertion in model container [2020-10-29 09:19:30,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:19:29" (2/3) ... [2020-10-29 09:19:30,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c832e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:19:30, skipping insertion in model container [2020-10-29 09:19:30,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:19:30" (3/3) ... [2020-10-29 09:19:30,159 INFO L111 eAbstractionObserver]: Analyzing ICFG test23-2.c [2020-10-29 09:19:30,172 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:19:30,177 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:19:30,192 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:19:30,221 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:19:30,221 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:19:30,221 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:19:30,222 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:19:30,222 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:19:30,222 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:19:30,222 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:19:30,222 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:19:30,241 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-29 09:19:30,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:19:30,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:19:30,249 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, 1] [2020-10-29 09:19:30,250 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:19:30,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:19:30,260 INFO L82 PathProgramCache]: Analyzing trace with hash -2067776934, now seen corresponding path program 1 times [2020-10-29 09:19:30,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:19:30,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413165324] [2020-10-29 09:19:30,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:19:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:30,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:30,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:30,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 09:19:30,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:30,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-29 09:19:30,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:30,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 09:19:30,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:30,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 09:19:30,906 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-10-29 09:19:30,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:19:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:30,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:30,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:30,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:30,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:30,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:19:30,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:30,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:30,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:30,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:30,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:30,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:30,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:19:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:30,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:30,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:30,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:30,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 09:19:30,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:30,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:30,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:30,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:19:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:31,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:31,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:31,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:19:31,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:31,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:19:31,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:31,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:31,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:31,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:31,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:31,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:31,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:19:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:31,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:31,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:31,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:19:31,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:31,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:19:31,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:31,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:31,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:31,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:31,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:31,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:31,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 09:19:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:31,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:31,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:31,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:31,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:31,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:19:31,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:31,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:31,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:31,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:19:31,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:31,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 09:19:31,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413165324] [2020-10-29 09:19:31,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:19:31,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:19:31,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601495699] [2020-10-29 09:19:31,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:19:31,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:19:31,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:19:31,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:19:31,116 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2020-10-29 09:19:31,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:19:31,296 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-10-29 09:19:31,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:19:31,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-29 09:19:31,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:19:31,308 INFO L225 Difference]: With dead ends: 51 [2020-10-29 09:19:31,308 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 09:19:31,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:19:31,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 09:19:31,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-29 09:19:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 09:19:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-29 09:19:31,365 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 31 [2020-10-29 09:19:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:19:31,367 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-29 09:19:31,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:19:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-29 09:19:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 09:19:31,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:19:31,370 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, 1, 1] [2020-10-29 09:19:31,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:19:31,371 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:19:31,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:19:31,372 INFO L82 PathProgramCache]: Analyzing trace with hash -721992407, now seen corresponding path program 1 times [2020-10-29 09:19:31,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:19:31,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274532027] [2020-10-29 09:19:31,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:19:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:31,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:31,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:31,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 09:19:31,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:31,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-29 09:19:31,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:31,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:19:31,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 09:19:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 09:19:31,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:31,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:19:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:31,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:31,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:31,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:31,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:19:31,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:31,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:31,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:31,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:31,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:19:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:31,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:31,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:31,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:31,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:31,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:19:31,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:31,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:31,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:19:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:31,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:31,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:19:31,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:31,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:19:31,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:31,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:31,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:31,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:19:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:31,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:31,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:31,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:19:31,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:19:31,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:31,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:31,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:31,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 09:19:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:31,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:31,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:31,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:31,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:31,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:19:31,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:31,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:31,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:31,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:19:31,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:31,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:31,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 09:19:31,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274532027] [2020-10-29 09:19:31,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:19:31,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:19:31,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422097662] [2020-10-29 09:19:31,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:19:31,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:19:31,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:19:31,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:19:31,923 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 6 states. [2020-10-29 09:19:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:19:32,130 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-10-29 09:19:32,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:19:32,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-29 09:19:32,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:19:32,133 INFO L225 Difference]: With dead ends: 40 [2020-10-29 09:19:32,133 INFO L226 Difference]: Without dead ends: 31 [2020-10-29 09:19:32,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:19:32,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-29 09:19:32,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-29 09:19:32,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 09:19:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-29 09:19:32,153 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 32 [2020-10-29 09:19:32,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:19:32,154 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-29 09:19:32,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:19:32,154 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-29 09:19:32,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:19:32,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:19:32,156 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1] [2020-10-29 09:19:32,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:19:32,156 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:19:32,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:19:32,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1217317746, now seen corresponding path program 1 times [2020-10-29 09:19:32,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:19:32,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507589568] [2020-10-29 09:19:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:19:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:32,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:32,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:32,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 09:19:32,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:32,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-29 09:19:32,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:32,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:19:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 09:19:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:19:32,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:32,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:19:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:32,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:32,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:32,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:32,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:32,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:19:32,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:32,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:32,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:32,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:32,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:32,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:32,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:19:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:32,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:32,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:32,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:32,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:32,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:19:32,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:32,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:32,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:32,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:19:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:32,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:32,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:32,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:19:32,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:32,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:19:32,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:32,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:32,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:32,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:32,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:19:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:32,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:32,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:32,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:19:32,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:32,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:19:32,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:32,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:32,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:32,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:32,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:32,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:32,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-29 09:19:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:32,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:32,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:32,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:32,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:32,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:19:32,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:32,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:19:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:32,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 09:19:32,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507589568] [2020-10-29 09:19:32,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:19:32,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:19:32,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251713470] [2020-10-29 09:19:32,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:19:32,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:19:32,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:19:32,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:19:32,642 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 7 states. [2020-10-29 09:19:32,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:19:32,853 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-29 09:19:32,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:19:32,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-10-29 09:19:32,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:19:32,855 INFO L225 Difference]: With dead ends: 42 [2020-10-29 09:19:32,855 INFO L226 Difference]: Without dead ends: 33 [2020-10-29 09:19:32,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:19:32,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-29 09:19:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-29 09:19:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 09:19:32,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-29 09:19:32,865 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 34 [2020-10-29 09:19:32,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:19:32,865 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-29 09:19:32,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:19:32,866 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-29 09:19:32,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 09:19:32,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:19:32,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:19:32,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:19:32,868 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:19:32,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:19:32,868 INFO L82 PathProgramCache]: Analyzing trace with hash -483598669, now seen corresponding path program 2 times [2020-10-29 09:19:32,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:19:32,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850683220] [2020-10-29 09:19:32,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:19:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:32,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:33,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:33,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:33,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 09:19:33,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:19:33,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 587 [2020-10-29 09:19:33,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:33,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:33,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:19:33,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 09:19:33,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:19:33,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:33,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:19:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:33,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:33,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:33,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:33,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:33,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:19:33,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:33,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:33,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:33,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:33,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:33,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 09:19:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:33,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:33,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:33,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:33,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:33,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:19:33,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:33,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:33,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:33,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:33,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:19:33,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 09:19:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:33,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:33,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:33,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:19:33,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:33,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:19:33,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:33,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:33,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:33,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:33,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:33,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:33,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:19:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:33,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:33,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:33,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:19:33,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:19:33,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:33,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:33,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:19:33,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:33,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:19:33,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:19:33,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 09:19:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:19:33,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:19:33,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:19:33,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:19:33,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:19:33,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 09:19:33,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:19:33,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:19:33,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:19:33,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:19:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:19:33,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:19:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 09:19:33,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850683220] [2020-10-29 09:19:33,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:19:33,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:19:33,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989619722] [2020-10-29 09:19:33,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:19:33,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:19:33,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:19:33,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:19:33,928 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2020-10-29 09:19:34,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:19:34,439 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-10-29 09:19:34,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:19:34,441 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-29 09:19:34,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:19:34,442 INFO L225 Difference]: With dead ends: 33 [2020-10-29 09:19:34,442 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:19:34,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:19:34,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:19:34,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:19:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:19:34,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:19:34,446 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-10-29 09:19:34,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:19:34,446 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:19:34,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:19:34,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:19:34,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:19:34,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:19:34,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:19:34,711 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-29 09:19:34,711 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-29 09:19:34,711 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-29 09:19:34,711 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-29 09:19:34,712 INFO L274 CegarLoopResult]: For program point initEXIT(lines 14 21) no Hoare annotation was computed. [2020-10-29 09:19:34,712 INFO L270 CegarLoopResult]: At program point initENTRY(lines 14 21) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-29 09:19:34,712 INFO L274 CegarLoopResult]: For program point initFINAL(lines 14 21) no Hoare annotation was computed. [2020-10-29 09:19:34,712 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:19:34,712 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#memory_int| |old(#memory_int)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#d2~0.base| |old(~#d2~0.base)|) (= |~#d1~0.base| |old(~#d1~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |~#d2~0.offset| |old(~#d2~0.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#d1~0.offset| |old(~#d1~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-29 09:19:34,713 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:19:34,713 INFO L274 CegarLoopResult]: For program point get_dummyFINAL(lines 23 26) no Hoare annotation was computed. [2020-10-29 09:19:34,713 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-10-29 09:19:34,713 INFO L277 CegarLoopResult]: At program point get_dummyENTRY(lines 23 26) the Hoare annotation is: true [2020-10-29 09:19:34,713 INFO L274 CegarLoopResult]: For program point get_dummyEXIT(lines 23 26) no Hoare annotation was computed. [2020-10-29 09:19:34,713 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:19:34,714 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 09:19:34,714 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:19:34,714 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:19:34,714 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 33 54) no Hoare annotation was computed. [2020-10-29 09:19:34,714 INFO L274 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-10-29 09:19:34,714 INFO L270 CegarLoopResult]: At program point L46(lines 34 54) the Hoare annotation is: false [2020-10-29 09:19:34,714 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 33 54) no Hoare annotation was computed. [2020-10-29 09:19:34,715 INFO L274 CegarLoopResult]: For program point L42-1(lines 42 44) no Hoare annotation was computed. [2020-10-29 09:19:34,715 INFO L270 CegarLoopResult]: At program point L42-3(lines 42 44) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= main_~i~0 .cse0) (= (+ main_~pd2~0.offset (* .cse0 4) 8) main_~pa~0.offset) (= main_~pd2~0.base main_~pa~0.base))) [2020-10-29 09:19:34,715 INFO L274 CegarLoopResult]: For program point L38(lines 38 48) no Hoare annotation was computed. [2020-10-29 09:19:34,715 INFO L270 CegarLoopResult]: At program point L42-4(lines 42 44) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= main_~i~0 (select (select |#memory_int| main_~pd2~0.base) (+ main_~pd2~0.offset (* main_~i~0 4) 8))) (= (+ main_~pd2~0.offset (* 4 .cse0) 8) main_~pa~0.offset) (<= main_~i~0 .cse0) (= main_~pd2~0.base main_~pa~0.base))) [2020-10-29 09:19:34,715 INFO L274 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-10-29 09:19:34,716 INFO L274 CegarLoopResult]: For program point L38-2(lines 38 48) no Hoare annotation was computed. [2020-10-29 09:19:34,716 INFO L277 CegarLoopResult]: At program point L36-1(line 36) the Hoare annotation is: true [2020-10-29 09:19:34,716 INFO L274 CegarLoopResult]: For program point L36-2(line 36) no Hoare annotation was computed. [2020-10-29 09:19:34,716 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 33 54) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-29 09:19:34,716 INFO L274 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-10-29 09:19:34,716 INFO L274 CegarLoopResult]: For program point L45-1(lines 45 47) no Hoare annotation was computed. [2020-10-29 09:19:34,716 INFO L277 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true [2020-10-29 09:19:34,717 INFO L277 CegarLoopResult]: At program point checkENTRY(lines 28 31) the Hoare annotation is: true [2020-10-29 09:19:34,717 INFO L274 CegarLoopResult]: For program point checkFINAL(lines 28 31) no Hoare annotation was computed. [2020-10-29 09:19:34,717 INFO L274 CegarLoopResult]: For program point checkEXIT(lines 28 31) no Hoare annotation was computed. [2020-10-29 09:19:34,729 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-29 09:19:34,730 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-29 09:19:34,737 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-29 09:19:34,737 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-29 09:19:34,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:19:34 BoogieIcfgContainer [2020-10-29 09:19:34,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:19:34,743 INFO L168 Benchmark]: Toolchain (without parser) took 5583.35 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 108.6 MB in the beginning and 82.8 MB in the end (delta: 25.8 MB). Peak memory consumption was 56.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:19:34,743 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:19:34,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.93 ms. Allocated memory is still 151.0 MB. Free memory was 108.0 MB in the beginning and 97.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:19:34,745 INFO L168 Benchmark]: Boogie Preprocessor took 132.92 ms. Allocated memory is still 151.0 MB. Free memory was 97.3 MB in the beginning and 134.0 MB in the end (delta: -36.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:19:34,746 INFO L168 Benchmark]: RCFGBuilder took 571.38 ms. Allocated memory is still 151.0 MB. Free memory was 134.0 MB in the beginning and 116.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:19:34,747 INFO L168 Benchmark]: TraceAbstraction took 4588.95 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 116.5 MB in the beginning and 82.8 MB in the end (delta: 33.7 MB). Peak memory consumption was 64.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:19:34,751 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.93 ms. Allocated memory is still 151.0 MB. Free memory was 108.0 MB in the beginning and 97.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 132.92 ms. Allocated memory is still 151.0 MB. Free memory was 97.3 MB in the beginning and 134.0 MB in the end (delta: -36.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 571.38 ms. Allocated memory is still 151.0 MB. Free memory was 134.0 MB in the beginning and 116.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4588.95 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 116.5 MB in the beginning and 82.8 MB in the end (delta: 33.7 MB). Peak memory consumption was 64.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant [2020-10-29 09:19:34,759 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-29 09:19:34,759 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-29 09:19:34,760 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-29 09:19:34,760 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (i <= unknown-#memory_int-unknown[pa][pa] && pd2 + unknown-#memory_int-unknown[pa][pa] * 4 + 8 == pa) && pd2 == pa - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 34 SDslu, 180 SDs, 0 SdLazy, 300 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 20 PreInvPairs, 23 NumberOfFragments, 118 HoareAnnotationTreeSize, 20 FomulaSimplifications, 65 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 13 FomulaSimplificationsInter, 176 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 17554 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 18/24 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...