/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/recursive/Ackermann01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 11:58:28,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 11:58:28,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 11:58:28,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 11:58:28,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 11:58:28,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 11:58:28,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 11:58:28,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 11:58:28,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 11:58:28,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 11:58:28,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 11:58:28,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 11:58:28,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 11:58:28,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 11:58:28,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 11:58:28,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 11:58:28,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 11:58:28,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 11:58:28,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 11:58:28,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 11:58:28,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 11:58:28,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 11:58:28,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 11:58:28,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 11:58:28,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 11:58:28,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 11:58:28,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 11:58:28,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 11:58:28,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 11:58:28,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 11:58:28,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 11:58:28,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 11:58:28,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 11:58:28,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 11:58:28,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 11:58:28,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 11:58:28,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 11:58:28,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 11:58:28,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 11:58:28,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 11:58:28,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 11:58:28,675 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 11:58:28,732 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 11:58:28,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 11:58:28,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 11:58:28,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 11:58:28,735 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 11:58:28,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 11:58:28,735 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 11:58:28,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 11:58:28,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 11:58:28,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 11:58:28,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 11:58:28,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 11:58:28,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 11:58:28,737 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 11:58:28,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 11:58:28,737 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 11:58:28,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 11:58:28,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 11:58:28,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 11:58:28,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 11:58:28,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 11:58:28,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 11:58:28,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 11:58:28,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 11:58:28,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 11:58:28,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 11:58:28,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 11:58:28,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 11:58:28,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 11:58:28,740 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 11:58:29,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 11:58:29,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 11:58:29,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 11:58:29,130 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 11:58:29,131 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 11:58:29,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-10-29 11:58:29,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb4753c00/32ca9a89a7f043488ca689104cdae259/FLAGe5bc3dfc2 [2020-10-29 11:58:29,791 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 11:58:29,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-10-29 11:58:29,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb4753c00/32ca9a89a7f043488ca689104cdae259/FLAGe5bc3dfc2 [2020-10-29 11:58:30,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb4753c00/32ca9a89a7f043488ca689104cdae259 [2020-10-29 11:58:30,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 11:58:30,198 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 11:58:30,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 11:58:30,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 11:58:30,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 11:58:30,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:30,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d2bd12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30, skipping insertion in model container [2020-10-29 11:58:30,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:30,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 11:58:30,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 11:58:30,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 11:58:30,415 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 11:58:30,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 11:58:30,451 INFO L208 MainTranslator]: Completed translation [2020-10-29 11:58:30,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30 WrapperNode [2020-10-29 11:58:30,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 11:58:30,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 11:58:30,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 11:58:30,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 11:58:30,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:30,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:30,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:30,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:30,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:30,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:30,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (1/1) ... [2020-10-29 11:58:30,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 11:58:30,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 11:58:30,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 11:58:30,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 11:58:30,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (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 11:58:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 11:58:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 11:58:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 11:58:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-10-29 11:58:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 11:58:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 11:58:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 11:58:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 11:58:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 11:58:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 11:58:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-10-29 11:58:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 11:58:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 11:58:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 11:58:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 11:58:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 11:58:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 11:58:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 11:58:30,868 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 11:58:30,868 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 11:58:30,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 11:58:30 BoogieIcfgContainer [2020-10-29 11:58:30,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 11:58:30,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 11:58:30,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 11:58:30,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 11:58:30,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 11:58:30" (1/3) ... [2020-10-29 11:58:30,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a24405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 11:58:30, skipping insertion in model container [2020-10-29 11:58:30,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 11:58:30" (2/3) ... [2020-10-29 11:58:30,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a24405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 11:58:30, skipping insertion in model container [2020-10-29 11:58:30,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 11:58:30" (3/3) ... [2020-10-29 11:58:30,893 INFO L111 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2020-10-29 11:58:30,921 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 11:58:30,945 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 11:58:30,963 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 11:58:30,995 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 11:58:30,995 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 11:58:30,995 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 11:58:30,995 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 11:58:30,996 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 11:58:30,996 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 11:58:30,996 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 11:58:30,996 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 11:58:31,016 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-29 11:58:31,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 11:58:31,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:31,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:31,025 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:31,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:31,036 INFO L82 PathProgramCache]: Analyzing trace with hash 192942640, now seen corresponding path program 1 times [2020-10-29 11:58:31,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:31,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280899047] [2020-10-29 11:58:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:31,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:31,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:31,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 11:58:31,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:31,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-29 11:58:31,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:31,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 11:58:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 11:58:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 11:58:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 11:58:31,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:31,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:31,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:31,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:31,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:31,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 11:58:31,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:31,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:31,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:31,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:31,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 11:58:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:31,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:31,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 11:58:31,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 11:58:31,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:31,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:31,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 11:58:31,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:31,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 11:58:31,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 11:58:31,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280899047] [2020-10-29 11:58:31,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:31,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 11:58:31,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216362603] [2020-10-29 11:58:31,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 11:58:31,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:31,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 11:58:31,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 11:58:31,941 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 7 states. [2020-10-29 11:58:32,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:32,621 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-10-29 11:58:32,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 11:58:32,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-10-29 11:58:32,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:32,643 INFO L225 Difference]: With dead ends: 45 [2020-10-29 11:58:32,644 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 11:58:32,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-29 11:58:32,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 11:58:32,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-29 11:58:32,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-29 11:58:32,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2020-10-29 11:58:32,701 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2020-10-29 11:58:32,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:32,701 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2020-10-29 11:58:32,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 11:58:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2020-10-29 11:58:32,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 11:58:32,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:32,705 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:32,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 11:58:32,705 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:32,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:32,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1691639833, now seen corresponding path program 1 times [2020-10-29 11:58:32,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:32,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535029814] [2020-10-29 11:58:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:32,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:33,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:33,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 11:58:33,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:33,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-29 11:58:33,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:33,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:33,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 11:58:33,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 11:58:33,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 11:58:33,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:33,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:33,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:33,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:33,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:33,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:33,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 11:58:33,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:33,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:33,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:33,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:33,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 11:58:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:33,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:33,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:33,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 11:58:33,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:33,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 11:58:33,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:33,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:33,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 11:58:33,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:33,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 11:58:33,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:33,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:33,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:33,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:33,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 11:58:33,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:33,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 11:58:33,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:33,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 11:58:33,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:33,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 11:58:33,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 11:58:33,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535029814] [2020-10-29 11:58:33,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 11:58:33,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 11:58:33,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469564158] [2020-10-29 11:58:33,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 11:58:33,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:33,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 11:58:33,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 11:58:33,314 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 9 states. [2020-10-29 11:58:33,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:33,883 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-10-29 11:58:33,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 11:58:33,884 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-29 11:58:33,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:33,886 INFO L225 Difference]: With dead ends: 35 [2020-10-29 11:58:33,886 INFO L226 Difference]: Without dead ends: 30 [2020-10-29 11:58:33,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-29 11:58:33,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-29 11:58:33,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-10-29 11:58:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-29 11:58:33,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-10-29 11:58:33,899 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 24 [2020-10-29 11:58:33,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:33,900 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-10-29 11:58:33,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 11:58:33,900 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-10-29 11:58:33,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 11:58:33,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:33,902 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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 11:58:33,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 11:58:33,902 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:33,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:33,903 INFO L82 PathProgramCache]: Analyzing trace with hash -118590102, now seen corresponding path program 1 times [2020-10-29 11:58:33,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:33,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567357128] [2020-10-29 11:58:33,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:34,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:34,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 11:58:34,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 11:58:34,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-29 11:58:34,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:34,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:34,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 11:58:34,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 11:58:34,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 11:58:34,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:34,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:34,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:34,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:34,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:34,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:34,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 11:58:34,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:34,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:34,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 11:58:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:34,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:34,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:34,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 11:58:34,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 11:58:34,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 11:58:34,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:34,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:34,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 11:58:34,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 11:58:34,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 11:58:34,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:34,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:34,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:34,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:34,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 11:58:34,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:34,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 11:58:34,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:34,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 11:58:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 11:58:34,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:34,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 11:58:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:34,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:34,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:34,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 11:58:34,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:34,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 11:58:34,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:34,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:34,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 11:58:34,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 11:58:34,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 11:58:34,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 11:58:34,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567357128] [2020-10-29 11:58:34,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 11:58:34,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 11:58:34,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292690966] [2020-10-29 11:58:34,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 11:58:34,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:34,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 11:58:34,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 11:58:34,469 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 6 states. [2020-10-29 11:58:34,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:34,758 INFO L93 Difference]: Finished difference Result 54 states and 79 transitions. [2020-10-29 11:58:34,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 11:58:34,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-29 11:58:34,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:34,761 INFO L225 Difference]: With dead ends: 54 [2020-10-29 11:58:34,761 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 11:58:34,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 11:58:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 11:58:34,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-29 11:58:34,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 11:58:34,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2020-10-29 11:58:34,778 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 48 transitions. Word has length 30 [2020-10-29 11:58:34,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:34,778 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 48 transitions. [2020-10-29 11:58:34,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 11:58:34,778 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 48 transitions. [2020-10-29 11:58:34,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 11:58:34,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:34,781 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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 11:58:34,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 11:58:34,781 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:34,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:34,782 INFO L82 PathProgramCache]: Analyzing trace with hash 936683835, now seen corresponding path program 1 times [2020-10-29 11:58:34,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:34,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017985028] [2020-10-29 11:58:34,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:34,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:35,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:35,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 11:58:35,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:35,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-29 11:58:35,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:35,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:35,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 11:58:35,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 11:58:35,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 11:58:35,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 11:58:35,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:35,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:35,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:35,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:35,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:35,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 11:58:35,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:35,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:35,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:35,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:35,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:35,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:35,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 11:58:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:35,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:35,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:35,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 11:58:35,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:35,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 11:58:35,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:35,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:35,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 11:58:35,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:35,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 11:58:35,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:35,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:35,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:35,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:35,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 11:58:35,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:35,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 11:58:35,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:35,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 11:58:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 11:58:35,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:35,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:35,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:35,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:35,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 11:58:35,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:35,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 11:58:35,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:35,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:35,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 11:58:35,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:35,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 11:58:35,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:35,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 11:58:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:35,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:35,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:35,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 11:58:35,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 11:58:35,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:35,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:35,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 11:58:35,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:35,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 11:58:35,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 11:58:35,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017985028] [2020-10-29 11:58:35,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 11:58:35,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 11:58:35,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708236051] [2020-10-29 11:58:35,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 11:58:35,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:35,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 11:58:35,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-29 11:58:35,586 INFO L87 Difference]: Start difference. First operand 35 states and 48 transitions. Second operand 12 states. [2020-10-29 11:58:36,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:36,492 INFO L93 Difference]: Finished difference Result 57 states and 91 transitions. [2020-10-29 11:58:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 11:58:36,493 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-29 11:58:36,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:36,496 INFO L225 Difference]: With dead ends: 57 [2020-10-29 11:58:36,496 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 11:58:36,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-10-29 11:58:36,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 11:58:36,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-10-29 11:58:36,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 11:58:36,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 75 transitions. [2020-10-29 11:58:36,517 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 75 transitions. Word has length 37 [2020-10-29 11:58:36,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:36,518 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 75 transitions. [2020-10-29 11:58:36,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 11:58:36,518 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 75 transitions. [2020-10-29 11:58:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 11:58:36,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:36,521 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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 11:58:36,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 11:58:36,521 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:36,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:36,522 INFO L82 PathProgramCache]: Analyzing trace with hash 653664217, now seen corresponding path program 2 times [2020-10-29 11:58:36,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:36,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951031759] [2020-10-29 11:58:36,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:36,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:36,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:36,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:37,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:38,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:38,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 11:58:38,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 11:58:38,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1695 [2020-10-29 11:58:38,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:38,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:38,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 11:58:38,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 11:58:38,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 11:58:38,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:38,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:38,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:38,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:38,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:38,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:38,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 11:58:38,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:38,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:38,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:38,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 11:58:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:38,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:38,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:38,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:38,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 11:58:38,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 11:58:38,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 11:58:38,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:38,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:38,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 11:58:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 11:58:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 11:58:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:38,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:38,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:38,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:38,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 11:58:38,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:38,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 11:58:38,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:38,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:38,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 11:58:38,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:38,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 11:58:38,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:38,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-29 11:58:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:38,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:38,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:38,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 11:58:38,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:38,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 11:58:38,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:38,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 11:58:38,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 11:58:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 11:58:38,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 11:58:38,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:38,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:38,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:38,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 11:58:38,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:38,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 11:58:38,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:38,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:38,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:38,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:38,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 11:58:38,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:38,655 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 11:58:38,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951031759] [2020-10-29 11:58:38,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 11:58:38,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 11:58:38,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493867032] [2020-10-29 11:58:38,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 11:58:38,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:38,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 11:58:38,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 11:58:38,658 INFO L87 Difference]: Start difference. First operand 46 states and 75 transitions. Second operand 8 states. [2020-10-29 11:58:39,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:39,093 INFO L93 Difference]: Finished difference Result 90 states and 190 transitions. [2020-10-29 11:58:39,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 11:58:39,094 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-10-29 11:58:39,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:39,099 INFO L225 Difference]: With dead ends: 90 [2020-10-29 11:58:39,099 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 11:58:39,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-29 11:58:39,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 11:58:39,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-10-29 11:58:39,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 11:58:39,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-10-29 11:58:39,120 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 37 [2020-10-29 11:58:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:39,120 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-10-29 11:58:39,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 11:58:39,121 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-10-29 11:58:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 11:58:39,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:39,123 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:39,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 11:58:39,124 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:39,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:39,125 INFO L82 PathProgramCache]: Analyzing trace with hash -561126020, now seen corresponding path program 3 times [2020-10-29 11:58:39,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:39,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906164169] [2020-10-29 11:58:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:39,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:39,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:39,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 11:58:39,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:39,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-29 11:58:39,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:39,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:39,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 11:58:39,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 11:58:39,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 11:58:39,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:39,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:39,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:39,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:39,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:39,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:39,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 11:58:39,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:39,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:39,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:39,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:39,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:39,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:39,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 11:58:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:39,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:39,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:39,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 11:58:39,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 11:58:39,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:39,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 11:58:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 11:58:39,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:39,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:39,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:39,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:39,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 11:58:39,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:39,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 11:58:39,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:39,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 11:58:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:39,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 11:58:39,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:39,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:39,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:39,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:39,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 11:58:39,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:39,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 11:58:39,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:39,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:39,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 11:58:39,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:39,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 11:58:39,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:39,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:39,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:39,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:39,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 11:58:39,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:39,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 11:58:39,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:39,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:39,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 11:58:39,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:39,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 11:58:39,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:39,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 11:58:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:39,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:39,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:39,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 11:58:39,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 11:58:39,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:39,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 11:58:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 11:58:39,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 11:58:39,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906164169] [2020-10-29 11:58:39,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 11:58:39,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 11:58:39,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163843413] [2020-10-29 11:58:39,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 11:58:39,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:39,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 11:58:39,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 11:58:39,923 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 14 states. [2020-10-29 11:58:40,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:40,713 INFO L93 Difference]: Finished difference Result 74 states and 138 transitions. [2020-10-29 11:58:40,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 11:58:40,715 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-10-29 11:58:40,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:40,721 INFO L225 Difference]: With dead ends: 74 [2020-10-29 11:58:40,722 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 11:58:40,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2020-10-29 11:58:40,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 11:58:40,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2020-10-29 11:58:40,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 11:58:40,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 82 transitions. [2020-10-29 11:58:40,764 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 82 transitions. Word has length 44 [2020-10-29 11:58:40,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:40,768 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 82 transitions. [2020-10-29 11:58:40,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 11:58:40,768 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 82 transitions. [2020-10-29 11:58:40,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 11:58:40,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:40,770 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:40,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 11:58:40,774 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:40,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:40,775 INFO L82 PathProgramCache]: Analyzing trace with hash 605433576, now seen corresponding path program 4 times [2020-10-29 11:58:40,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:40,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721844253] [2020-10-29 11:58:40,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:40,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:40,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:40,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:41,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:43,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:43,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 11:58:43,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 11:58:43,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2788 [2020-10-29 11:58:43,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:43,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 11:58:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 11:58:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 11:58:43,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:43,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:43,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:43,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:43,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:43,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:43,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 11:58:43,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:43,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:43,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:43,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:43,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 11:58:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:43,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:43,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:43,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:44,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:44,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 11:58:44,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 11:58:44,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-29 11:58:44,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:44,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 11:58:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 11:58:44,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 11:58:44,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:44,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:44,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:44,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:44,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 11:58:44,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:44,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 11:58:44,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:44,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 11:58:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:44,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 11:58:44,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:44,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:44,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:44,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:44,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 11:58:44,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:44,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 11:58:44,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:44,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 11:58:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 11:58:44,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:44,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 11:58:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:44,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:44,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:44,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:44,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 11:58:44,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 11:58:44,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 11:58:44,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:44,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 11:58:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 11:58:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 11:58:44,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:44,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:44,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:44,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:44,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 11:58:44,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:44,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 11:58:44,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:44,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:44,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 11:58:44,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 11:58:44,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721844253] [2020-10-29 11:58:44,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 11:58:44,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 11:58:44,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028450989] [2020-10-29 11:58:44,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 11:58:44,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:44,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 11:58:44,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 11:58:44,308 INFO L87 Difference]: Start difference. First operand 50 states and 82 transitions. Second operand 8 states. [2020-10-29 11:58:44,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:44,776 INFO L93 Difference]: Finished difference Result 95 states and 192 transitions. [2020-10-29 11:58:44,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 11:58:44,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-29 11:58:44,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:44,779 INFO L225 Difference]: With dead ends: 95 [2020-10-29 11:58:44,780 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 11:58:44,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-29 11:58:44,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 11:58:44,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-29 11:58:44,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 11:58:44,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 80 transitions. [2020-10-29 11:58:44,806 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 80 transitions. Word has length 44 [2020-10-29 11:58:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:44,810 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 80 transitions. [2020-10-29 11:58:44,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 11:58:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 80 transitions. [2020-10-29 11:58:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 11:58:44,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 11:58:44,816 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 11:58:44,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 11:58:44,816 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 11:58:44,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 11:58:44,817 INFO L82 PathProgramCache]: Analyzing trace with hash -239584131, now seen corresponding path program 5 times [2020-10-29 11:58:44,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 11:58:44,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313607862] [2020-10-29 11:58:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 11:58:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:44,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:44,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:47,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:47,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 11:58:47,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 11:58:47,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2852 [2020-10-29 11:58:47,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:47,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 11:58:47,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 11:58:47,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 11:58:47,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:47,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 11:58:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:47,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:47,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:47,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 11:58:47,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 11:58:47,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:47,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 11:58:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 11:58:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:47,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 11:58:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:47,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:47,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:47,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 11:58:47,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:47,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 11:58:47,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:47,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:47,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 11:58:47,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 11:58:47,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 11:58:47,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:47,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:47,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:48,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:48,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 11:58:48,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:48,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 11:58:48,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:48,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:48,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 11:58:48,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:48,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 11:58:48,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:48,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:48,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:48,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:48,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 11:58:48,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:48,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 11:58:48,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:48,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 11:58:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 11:58:48,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:48,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:48,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:48,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:48,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 11:58:48,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:48,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 11:58:48,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:48,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:48,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 11:58:48,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:48,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 11:58:48,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:48,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:48,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:48,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:48,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 11:58:48,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:48,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 11:58:48,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:48,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 11:58:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 11:58:48,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:48,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 11:58:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:48,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:48,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:48,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 11:58:48,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:48,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 11:58:48,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:48,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 11:58:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 11:58:48,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:48,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 11:58:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:48,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:48,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:48,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 11:58:48,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:48,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 11:58:48,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:48,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 11:58:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 11:58:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 11:58:48,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:48,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-29 11:58:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 11:58:48,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 11:58:48,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 11:58:48,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 11:58:48,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 11:58:48,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 11:58:48,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 11:58:48,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 11:58:48,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 11:58:48,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 11:58:48,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 11:58:48,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 11:58:48,373 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 47 proven. 39 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-29 11:58:48,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313607862] [2020-10-29 11:58:48,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 11:58:48,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 11:58:48,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444445777] [2020-10-29 11:58:48,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 11:58:48,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 11:58:48,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 11:58:48,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-29 11:58:48,375 INFO L87 Difference]: Start difference. First operand 54 states and 80 transitions. Second operand 17 states. [2020-10-29 11:58:49,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 11:58:49,479 INFO L93 Difference]: Finished difference Result 97 states and 185 transitions. [2020-10-29 11:58:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 11:58:49,480 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-10-29 11:58:49,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 11:58:49,481 INFO L225 Difference]: With dead ends: 97 [2020-10-29 11:58:49,481 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 11:58:49,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2020-10-29 11:58:49,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 11:58:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 11:58:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 11:58:49,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 11:58:49,485 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2020-10-29 11:58:49,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 11:58:49,485 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 11:58:49,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 11:58:49,485 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 11:58:49,485 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 11:58:49,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 11:58:49,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 11:58:49,952 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 13 [2020-10-29 11:58:50,140 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 19 [2020-10-29 11:58:50,293 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 17 [2020-10-29 11:58:50,343 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-29 11:58:50,344 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-29 11:58:50,344 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-29 11:58:50,345 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-29 11:58:50,345 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 11:58:50,345 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-29 11:58:50,345 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 11:58:50,345 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 11:58:50,345 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 11:58:50,345 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 11:58:50,345 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 11:58:50,346 INFO L274 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-10-29 11:58:50,346 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 28 48) the Hoare annotation is: true [2020-10-29 11:58:50,346 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 28 48) no Hoare annotation was computed. [2020-10-29 11:58:50,346 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: false [2020-10-29 11:58:50,347 INFO L274 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-10-29 11:58:50,347 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 28 48) no Hoare annotation was computed. [2020-10-29 11:58:50,347 INFO L274 CegarLoopResult]: For program point L43(lines 43 47) no Hoare annotation was computed. [2020-10-29 11:58:50,347 INFO L277 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: true [2020-10-29 11:58:50,347 INFO L274 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-10-29 11:58:50,347 INFO L274 CegarLoopResult]: For program point L36(lines 36 41) no Hoare annotation was computed. [2020-10-29 11:58:50,347 INFO L274 CegarLoopResult]: For program point ackermannEXIT(lines 17 25) no Hoare annotation was computed. [2020-10-29 11:58:50,347 INFO L270 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (and (or (< 0 ackermann_~n) (<= (+ ackermann_~n 1) 0)) (<= ackermann_~n |ackermann_#in~n|) (<= |ackermann_#in~n| ackermann_~n) (= ackermann_~m |ackermann_#in~m|) (not (= |ackermann_#in~m| 0))) [2020-10-29 11:58:50,348 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-10-29 11:58:50,348 INFO L270 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (<= |ackermann_#in~n| 0) (<= ackermann_~n |ackermann_#in~n|) (<= |ackermann_#in~n| ackermann_~n) (= ackermann_~m |ackermann_#in~m|) (<= 0 |ackermann_#in~n|) (not (= |ackermann_#in~m| 0))) [2020-10-29 11:58:50,349 INFO L270 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: (and (or (< 0 ackermann_~n) (<= (+ ackermann_~n 1) 0)) (<= ackermann_~n |ackermann_#in~n|) (<= |ackermann_#in~n| ackermann_~n) (<= 2 |ackermann_#t~ret8|) (= ackermann_~m |ackermann_#in~m|) (not (= |ackermann_#in~m| 0))) [2020-10-29 11:58:50,350 INFO L277 CegarLoopResult]: At program point ackermannENTRY(lines 17 25) the Hoare annotation is: true [2020-10-29 11:58:50,350 INFO L274 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-10-29 11:58:50,350 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-10-29 11:58:50,350 INFO L274 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-10-29 11:58:50,350 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-29 11:58:50,350 INFO L274 CegarLoopResult]: For program point ackermannFINAL(lines 17 25) no Hoare annotation was computed. [2020-10-29 11:58:50,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 11:58:50 BoogieIcfgContainer [2020-10-29 11:58:50,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 11:58:50,366 INFO L168 Benchmark]: Toolchain (without parser) took 20168.32 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 127.2 MB in the beginning and 127.5 MB in the end (delta: -255.6 kB). Peak memory consumption was 164.1 MB. Max. memory is 8.0 GB. [2020-10-29 11:58:50,367 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 124.4 MB in the end (delta: 112.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 11:58:50,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.20 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 117.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 11:58:50,370 INFO L168 Benchmark]: Boogie Preprocessor took 34.80 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 115.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 11:58:50,370 INFO L168 Benchmark]: RCFGBuilder took 387.39 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 102.1 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-29 11:58:50,374 INFO L168 Benchmark]: TraceAbstraction took 19481.10 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 101.7 MB in the beginning and 127.5 MB in the end (delta: -25.8 MB). Peak memory consumption was 138.9 MB. Max. memory is 8.0 GB. [2020-10-29 11:58:50,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 124.4 MB in the end (delta: 112.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 251.20 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 117.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.80 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 115.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 387.39 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 102.1 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 19481.10 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 101.7 MB in the beginning and 127.5 MB in the end (delta: -25.8 MB). Peak memory consumption was 138.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.4s, OverallIterations: 8, TraceHistogramMax: 8, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 177 SDtfs, 269 SDslu, 304 SDs, 0 SdLazy, 1555 SolverSat, 323 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 92 SyntacticMatches, 3 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 30 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 134 PreInvPairs, 173 NumberOfFragments, 107 HoareAnnotationTreeSize, 134 FomulaSimplifications, 1871 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 11 FomulaSimplificationsInter, 1183 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 12.4s InterpolantComputationTime, 297 NumberOfCodeBlocks, 297 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 36711 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 205/288 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...