/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:37:14,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:37:14,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:37:14,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:37:14,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:37:14,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:37:14,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:37:14,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:37:14,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:37:14,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:37:14,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:37:14,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:37:14,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:37:14,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:37:14,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:37:14,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:37:14,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:37:14,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:37:14,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:37:14,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:37:14,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:37:14,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:37:14,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:37:14,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:37:14,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:37:14,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:37:14,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:37:14,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:37:14,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:37:14,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:37:14,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:37:14,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:37:14,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:37:14,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:37:14,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:37:14,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:37:14,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:37:14,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:37:14,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:37:14,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:37:14,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:37:14,771 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 22:37:14,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:37:14,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:37:14,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:37:14,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:37:14,822 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:37:14,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:37:14,822 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:37:14,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:37:14,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:37:14,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:37:14,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:37:14,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:37:14,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:37:14,824 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:37:14,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:37:14,824 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:37:14,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:37:14,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:37:14,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:37:14,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:37:14,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:37:14,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:37:14,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:37:14,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:37:14,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:37:14,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:37:14,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:37:14,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:37:14,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:37:14,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:37:15,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:37:15,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:37:15,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:37:15,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:37:15,291 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:37:15,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2020-10-27 22:37:15,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba6feb165/58456180d7e34ce58cd17e340316e762/FLAG65b6d8e7c [2020-10-27 22:37:15,989 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:37:15,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2020-10-27 22:37:15,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba6feb165/58456180d7e34ce58cd17e340316e762/FLAG65b6d8e7c [2020-10-27 22:37:16,372 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ba6feb165/58456180d7e34ce58cd17e340316e762 [2020-10-27 22:37:16,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:37:16,385 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:37:16,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:37:16,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:37:16,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:37:16,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:37:16" (1/1) ... [2020-10-27 22:37:16,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a16208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:37:16, skipping insertion in model container [2020-10-27 22:37:16,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:37:16" (1/1) ... [2020-10-27 22:37:16,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:37:16,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:37:16,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:37:16,609 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:37:16,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:37:16,655 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:37:16,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:37:16 WrapperNode [2020-10-27 22:37:16,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:37:16,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:37:16,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:37:16,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:37:16,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:37:16" (1/1) ... [2020-10-27 22:37:16,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:37:16" (1/1) ... [2020-10-27 22:37:16,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:37:16" (1/1) ... [2020-10-27 22:37:16,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:37:16" (1/1) ... [2020-10-27 22:37:16,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:37:16" (1/1) ... [2020-10-27 22:37:16,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:37:16" (1/1) ... [2020-10-27 22:37:16,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:37:16" (1/1) ... [2020-10-27 22:37:16,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:37:16,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:37:16,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:37:16,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:37:16,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:37:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:37:16,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:37:16,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:37:16,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:37:16,765 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-27 22:37:16,766 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-10-27 22:37:16,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:37:16,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 22:37:16,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:37:16,766 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:37:16,766 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:37:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:37:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-27 22:37:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-10-27 22:37:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:37:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:37:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:37:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:37:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:37:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:37:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:37:17,026 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:37:17,026 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 22:37:17,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:37:17 BoogieIcfgContainer [2020-10-27 22:37:17,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:37:17,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:37:17,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:37:17,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:37:17,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:37:16" (1/3) ... [2020-10-27 22:37:17,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd37fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:37:17, skipping insertion in model container [2020-10-27 22:37:17,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:37:16" (2/3) ... [2020-10-27 22:37:17,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd37fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:37:17, skipping insertion in model container [2020-10-27 22:37:17,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:37:17" (3/3) ... [2020-10-27 22:37:17,039 INFO L111 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2020-10-27 22:37:17,053 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:37:17,059 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:37:17,102 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:37:17,133 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:37:17,134 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:37:17,134 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:37:17,134 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:37:17,134 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:37:17,134 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:37:17,134 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:37:17,135 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:37:17,155 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-27 22:37:17,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 22:37:17,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:37:17,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:37:17,165 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:37:17,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:37:17,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1481297807, now seen corresponding path program 1 times [2020-10-27 22:37:17,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:37:17,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225048298] [2020-10-27 22:37:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:37:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:17,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:17,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:37:17,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:17,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-27 22:37:17,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:17,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:37:17,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 22:37:17,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:37:17,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:37:17,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:37:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:17,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:17,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:17,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:37:17,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:17,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:37:17,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:17,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:17,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:17,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:17,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:17,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:37:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:17,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:17,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:17,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:37:17,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:17,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:37:17,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:17,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:37:17,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:37:17,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:37:17,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:37:17,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225048298] [2020-10-27 22:37:17,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:37:17,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:37:17,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279173071] [2020-10-27 22:37:17,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:37:17,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:37:17,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:37:17,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:37:17,893 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 6 states. [2020-10-27 22:37:18,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:37:18,198 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-27 22:37:18,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:37:18,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-27 22:37:18,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:37:18,210 INFO L225 Difference]: With dead ends: 42 [2020-10-27 22:37:18,211 INFO L226 Difference]: Without dead ends: 26 [2020-10-27 22:37:18,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:37:18,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-27 22:37:18,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-27 22:37:18,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 22:37:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-27 22:37:18,270 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 15 [2020-10-27 22:37:18,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:37:18,270 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-27 22:37:18,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:37:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-27 22:37:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 22:37:18,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:37:18,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:37:18,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:37:18,273 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:37:18,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:37:18,275 INFO L82 PathProgramCache]: Analyzing trace with hash 262491562, now seen corresponding path program 1 times [2020-10-27 22:37:18,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:37:18,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957777923] [2020-10-27 22:37:18,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:37:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:18,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:18,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 22:37:18,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:18,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-27 22:37:18,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:37:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 22:37:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 22:37:18,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:37:18,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:37:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:18,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:18,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:37:18,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:18,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:37:18,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:18,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:18,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:18,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:18,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:18,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:37:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:18,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:18,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 22:37:18,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:18,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 22:37:18,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:18,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:37:18,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:37:18,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:37:18,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:18,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:18,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:18,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:18,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:37:18,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:18,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:37:18,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:18,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:37:18,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:37:18,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:37:18,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957777923] [2020-10-27 22:37:18,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:37:18,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:37:18,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888284373] [2020-10-27 22:37:18,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:37:18,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:37:18,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:37:18,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:37:18,807 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 8 states. [2020-10-27 22:37:19,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:37:19,114 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-10-27 22:37:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 22:37:19,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-27 22:37:19,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:37:19,116 INFO L225 Difference]: With dead ends: 36 [2020-10-27 22:37:19,116 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 22:37:19,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:37:19,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 22:37:19,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-27 22:37:19,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 22:37:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-27 22:37:19,128 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 21 [2020-10-27 22:37:19,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:37:19,128 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-27 22:37:19,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:37:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-27 22:37:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 22:37:19,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:37:19,130 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, 1, 1, 1] [2020-10-27 22:37:19,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:37:19,130 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:37:19,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:37:19,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1067256061, now seen corresponding path program 1 times [2020-10-27 22:37:19,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:37:19,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223796152] [2020-10-27 22:37:19,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:37:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:19,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:19,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:19,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 22:37:19,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 22:37:19,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:37:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 22:37:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:37:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:19,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:37:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:19,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:19,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:19,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:37:19,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:19,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:37:19,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:19,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:19,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:37:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:19,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:19,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:19,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:37:19,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:19,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 22:37:19,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:19,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:37:19,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:37:19,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 22:37:19,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:19,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:19,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:19,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:19,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 22:37:19,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:19,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 22:37:19,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:37:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 22:37:19,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:19,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:19,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:19,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:19,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:37:19,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:19,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:37:19,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:37:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:19,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:37:19,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 22:37:19,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223796152] [2020-10-27 22:37:19,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:37:19,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 22:37:19,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767887412] [2020-10-27 22:37:19,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:37:19,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:37:19,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:37:19,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:37:19,565 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 9 states. [2020-10-27 22:37:19,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:37:19,890 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-27 22:37:19,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 22:37:19,891 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-27 22:37:19,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:37:19,892 INFO L225 Difference]: With dead ends: 42 [2020-10-27 22:37:19,892 INFO L226 Difference]: Without dead ends: 37 [2020-10-27 22:37:19,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:37:19,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-27 22:37:19,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-10-27 22:37:19,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 22:37:19,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-10-27 22:37:19,902 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 27 [2020-10-27 22:37:19,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:37:19,902 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-10-27 22:37:19,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:37:19,903 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-10-27 22:37:19,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 22:37:19,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:37:19,904 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:37:19,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:37:19,904 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:37:19,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:37:19,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1416908450, now seen corresponding path program 1 times [2020-10-27 22:37:19,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:37:19,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512286900] [2020-10-27 22:37:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:37:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:19,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:20,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:20,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 22:37:20,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:20,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 22:37:20,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:20,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:37:20,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 22:37:20,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:37:20,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:20,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:37:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:20,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:20,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:20,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:37:20,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:20,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:37:20,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:20,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:20,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:37:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:20,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:20,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:20,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 22:37:20,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:20,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 22:37:20,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:37:20,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:37:20,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:37:20,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:20,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:20,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:20,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:37:20,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:20,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 22:37:20,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:20,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:37:20,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:20,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:37:20,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:20,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:20,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:20,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:20,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 22:37:20,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:20,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 22:37:20,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:20,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:37:20,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:20,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 22:37:20,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:20,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:20,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:20,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:20,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:37:20,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:20,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:37:20,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:37:20,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:20,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:37:20,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 22:37:20,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512286900] [2020-10-27 22:37:20,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:37:20,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 22:37:20,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189778527] [2020-10-27 22:37:20,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:37:20,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:37:20,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:37:20,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:37:20,417 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 12 states. [2020-10-27 22:37:20,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:37:20,800 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-10-27 22:37:20,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:37:20,801 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-27 22:37:20,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:37:20,802 INFO L225 Difference]: With dead ends: 48 [2020-10-27 22:37:20,803 INFO L226 Difference]: Without dead ends: 43 [2020-10-27 22:37:20,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:37:20,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-27 22:37:20,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2020-10-27 22:37:20,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 22:37:20,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-10-27 22:37:20,813 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 33 [2020-10-27 22:37:20,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:37:20,813 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-10-27 22:37:20,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:37:20,814 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-10-27 22:37:20,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 22:37:20,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:37:20,815 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:37:20,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:37:20,816 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:37:20,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:37:20,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1482575991, now seen corresponding path program 2 times [2020-10-27 22:37:20,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:37:20,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195322628] [2020-10-27 22:37:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:37:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:20,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:21,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:21,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 22:37:21,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-27 22:37:21,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:37:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 22:37:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 22:37:21,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:21,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:37:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:21,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:21,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:21,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:37:21,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:21,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:37:21,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:21,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:21,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:21,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:21,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:37:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:21,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:21,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:21,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 22:37:21,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:21,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 22:37:21,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:37:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:37:21,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:37:21,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:21,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:21,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:21,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 22:37:21,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:21,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 22:37:21,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:21,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:37:21,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:21,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 22:37:21,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:21,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:21,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:21,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:21,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:37:21,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:21,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 22:37:21,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:21,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:37:21,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:21,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:37:21,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:21,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:21,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:21,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:21,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 22:37:21,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:21,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 22:37:21,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:37:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 22:37:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:21,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:21,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:21,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:21,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:37:21,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:21,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:37:21,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:37:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:21,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:37:21,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 22:37:21,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195322628] [2020-10-27 22:37:21,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:37:21,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 22:37:21,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66735019] [2020-10-27 22:37:21,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:37:21,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:37:21,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:37:21,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:37:21,482 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 13 states. [2020-10-27 22:37:22,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:37:22,007 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-10-27 22:37:22,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 22:37:22,008 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-10-27 22:37:22,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:37:22,010 INFO L225 Difference]: With dead ends: 54 [2020-10-27 22:37:22,010 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 22:37:22,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:37:22,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 22:37:22,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-10-27 22:37:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 22:37:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-27 22:37:22,020 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 39 [2020-10-27 22:37:22,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:37:22,020 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-27 22:37:22,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:37:22,020 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-27 22:37:22,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 22:37:22,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:37:22,022 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:37:22,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:37:22,022 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:37:22,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:37:22,023 INFO L82 PathProgramCache]: Analyzing trace with hash -487565550, now seen corresponding path program 2 times [2020-10-27 22:37:22,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:37:22,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358386360] [2020-10-27 22:37:22,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:37:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:22,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:22,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:22,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 22:37:22,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:22,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-27 22:37:22,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:22,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:37:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 22:37:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 22:37:22,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:22,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:37:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:22,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:22,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:22,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:37:22,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:22,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:37:22,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:22,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:22,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:37:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:22,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:22,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:22,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 22:37:22,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:22,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 22:37:22,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:37:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:22,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 22:37:22,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:22,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:22,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:22,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:22,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 22:37:22,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:22,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 22:37:22,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:22,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:37:22,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:22,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 22:37:22,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:22,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:22,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:22,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:22,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 22:37:22,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:22,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 22:37:22,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:22,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:37:22,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:22,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 22:37:22,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:22,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:22,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:22,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:22,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:37:22,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:22,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 22:37:22,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:37:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 22:37:22,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:22,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:22,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:22,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:22,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 22:37:22,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:22,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:37:22,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:37:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 22:37:22,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:37:22,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:22,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:22,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:22,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:37:22,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:22,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:37:22,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:22,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:37:22,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:22,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:37:22,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 22:37:23,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358386360] [2020-10-27 22:37:23,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:37:23,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 22:37:23,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588092800] [2020-10-27 22:37:23,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 22:37:23,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:37:23,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 22:37:23,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:37:23,024 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 16 states. [2020-10-27 22:37:24,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:37:24,136 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-10-27 22:37:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:37:24,136 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-27 22:37:24,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:37:24,139 INFO L225 Difference]: With dead ends: 60 [2020-10-27 22:37:24,139 INFO L226 Difference]: Without dead ends: 55 [2020-10-27 22:37:24,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-10-27 22:37:24,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-27 22:37:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2020-10-27 22:37:24,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 22:37:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-27 22:37:24,150 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 45 [2020-10-27 22:37:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:37:24,150 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-27 22:37:24,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 22:37:24,151 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-27 22:37:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 22:37:24,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:37:24,152 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:37:24,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:37:24,153 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:37:24,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:37:24,153 INFO L82 PathProgramCache]: Analyzing trace with hash 720493547, now seen corresponding path program 3 times [2020-10-27 22:37:24,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:37:24,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259347244] [2020-10-27 22:37:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:37:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:24,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:24,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:24,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:24,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 22:37:24,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:37:24,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-27 22:37:24,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:24,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:37:24,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 22:37:24,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 22:37:24,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:37:24,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:37:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:24,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:24,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:24,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:37:24,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:24,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:37:24,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:24,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:24,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:24,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:24,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:24,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:37:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:24,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:24,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:24,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 22:37:24,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:24,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 22:37:24,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:37:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:37:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 22:37:24,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:24,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:25,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:25,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 22:37:25,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:25,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 22:37:25,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:25,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:37:25,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:25,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:37:25,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:25,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:25,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:25,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:25,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 22:37:25,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:25,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 22:37:25,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:25,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:37:25,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:25,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 22:37:25,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:25,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:25,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:25,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:25,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 22:37:25,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:25,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 22:37:25,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:25,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:37:25,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:25,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 22:37:25,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:25,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:25,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:25,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:25,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:37:25,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:25,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 22:37:25,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:25,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:37:25,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:37:25,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:25,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:25,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:25,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:25,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 22:37:25,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:25,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:37:25,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:37:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 22:37:25,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:37:25,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:25,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:25,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:25,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:37:25,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:25,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:37:25,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:37:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:37:25,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:25,484 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 22:37:25,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259347244] [2020-10-27 22:37:25,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:37:25,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 22:37:25,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092782282] [2020-10-27 22:37:25,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 22:37:25,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:37:25,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 22:37:25,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:37:25,487 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 15 states. [2020-10-27 22:37:26,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:37:26,217 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2020-10-27 22:37:26,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 22:37:26,217 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-27 22:37:26,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:37:26,219 INFO L225 Difference]: With dead ends: 66 [2020-10-27 22:37:26,219 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 22:37:26,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2020-10-27 22:37:26,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 22:37:26,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-27 22:37:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 22:37:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-10-27 22:37:26,228 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 51 [2020-10-27 22:37:26,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:37:26,229 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-10-27 22:37:26,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 22:37:26,229 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-10-27 22:37:26,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 22:37:26,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:37:26,231 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:37:26,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:37:26,231 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:37:26,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:37:26,232 INFO L82 PathProgramCache]: Analyzing trace with hash -803455290, now seen corresponding path program 3 times [2020-10-27 22:37:26,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:37:26,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206047170] [2020-10-27 22:37:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:37:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:26,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:26,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:26,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:26,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 22:37:26,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:37:26,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-10-27 22:37:26,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:26,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:37:26,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 22:37:26,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 22:37:26,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:26,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:37:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:26,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:26,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:26,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:37:26,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:26,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:37:26,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:37:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:37:26,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:26,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 22:37:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:26,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:27,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:27,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 22:37:27,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:27,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-27 22:37:27,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:27,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:37:27,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:37:27,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 22:37:27,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:27,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:27,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:27,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:27,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 22:37:27,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:27,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 22:37:27,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:37:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 22:37:27,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:27,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:27,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:27,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:27,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 22:37:27,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:27,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 22:37:27,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:27,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:37:27,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 22:37:27,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:27,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:27,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:27,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:27,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 22:37:27,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:27,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 22:37:27,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:37:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 22:37:27,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:27,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:27,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:27,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:27,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 22:37:27,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:27,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 22:37:27,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:37:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:27,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 22:37:27,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:27,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:27,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:27,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:27,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 22:37:27,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:27,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 22:37:27,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:37:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:27,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 22:37:27,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:27,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:27,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:27,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:27,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 22:37:27,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:27,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 22:37:27,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:27,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:37:27,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 22:37:27,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:27,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 22:37:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:37:27,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:37:27,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:37:27,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:37:27,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:37:27,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:37:27,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:37:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:37:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:37:27,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:37:27,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:37:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 22:37:27,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206047170] [2020-10-27 22:37:27,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:37:27,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 22:37:27,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524273377] [2020-10-27 22:37:27,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 22:37:27,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:37:27,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 22:37:27,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:37:27,869 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 16 states. [2020-10-27 22:37:28,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:37:28,609 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2020-10-27 22:37:28,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:37:28,615 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-27 22:37:28,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:37:28,616 INFO L225 Difference]: With dead ends: 41 [2020-10-27 22:37:28,616 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 22:37:28,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2020-10-27 22:37:28,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 22:37:28,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 22:37:28,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 22:37:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 22:37:28,618 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-10-27 22:37:28,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:37:28,618 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 22:37:28,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 22:37:28,618 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 22:37:28,618 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 22:37:28,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:37:28,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 22:37:28,815 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-27 22:37:28,816 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-27 22:37:28,816 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-27 22:37:28,816 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-27 22:37:28,816 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 22:37:28,816 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 22:37:28,816 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 22:37:28,817 INFO L270 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= id2_~x |id2_#in~x|) [2020-10-27 22:37:28,817 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-27 22:37:28,817 INFO L274 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-10-27 22:37:28,819 INFO L274 CegarLoopResult]: For program point id2EXIT(lines 14 17) no Hoare annotation was computed. [2020-10-27 22:37:28,819 INFO L277 CegarLoopResult]: At program point id2ENTRY(lines 14 17) the Hoare annotation is: true [2020-10-27 22:37:28,819 INFO L274 CegarLoopResult]: For program point id2FINAL(lines 14 17) no Hoare annotation was computed. [2020-10-27 22:37:28,819 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 22:37:28,819 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 22:37:28,819 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 22:37:28,819 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 22:37:28,820 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 19 25) the Hoare annotation is: true [2020-10-27 22:37:28,820 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 19 25) no Hoare annotation was computed. [2020-10-27 22:37:28,820 INFO L270 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: false [2020-10-27 22:37:28,820 INFO L274 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-10-27 22:37:28,820 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-10-27 22:37:28,820 INFO L270 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (<= main_~input~0 5) (<= 5 main_~input~0)) [2020-10-27 22:37:28,820 INFO L274 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-10-27 22:37:28,821 INFO L274 CegarLoopResult]: For program point L22-2(lines 19 25) no Hoare annotation was computed. [2020-10-27 22:37:28,821 INFO L274 CegarLoopResult]: For program point idFINAL(lines 9 12) no Hoare annotation was computed. [2020-10-27 22:37:28,821 INFO L270 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (= |id_#in~x| id_~x) [2020-10-27 22:37:28,821 INFO L274 CegarLoopResult]: For program point idEXIT(lines 9 12) no Hoare annotation was computed. [2020-10-27 22:37:28,821 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-10-27 22:37:28,821 INFO L274 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-10-27 22:37:28,821 INFO L277 CegarLoopResult]: At program point idENTRY(lines 9 12) the Hoare annotation is: true [2020-10-27 22:37:28,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 10:37:28 BoogieIcfgContainer [2020-10-27 22:37:28,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 22:37:28,840 INFO L168 Benchmark]: Toolchain (without parser) took 12452.05 ms. Allocated memory was 156.2 MB in the beginning and 270.5 MB in the end (delta: 114.3 MB). Free memory was 131.5 MB in the beginning and 126.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 120.8 MB. Max. memory is 8.0 GB. [2020-10-27 22:37:28,840 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 125.8 MB. Free memory is still 101.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 22:37:28,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.71 ms. Allocated memory is still 156.2 MB. Free memory was 131.0 MB in the beginning and 121.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 22:37:28,844 INFO L168 Benchmark]: Boogie Preprocessor took 33.01 ms. Allocated memory is still 156.2 MB. Free memory was 121.8 MB in the beginning and 120.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 22:37:28,844 INFO L168 Benchmark]: RCFGBuilder took 338.17 ms. Allocated memory is still 156.2 MB. Free memory was 120.3 MB in the beginning and 107.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 22:37:28,845 INFO L168 Benchmark]: TraceAbstraction took 11798.67 ms. Allocated memory was 156.2 MB in the beginning and 270.5 MB in the end (delta: 114.3 MB). Free memory was 106.9 MB in the beginning and 126.0 MB in the end (delta: -19.1 MB). Peak memory consumption was 95.6 MB. Max. memory is 8.0 GB. [2020-10-27 22:37:28,853 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 125.8 MB. Free memory is still 101.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.71 ms. Allocated memory is still 156.2 MB. Free memory was 131.0 MB in the beginning and 121.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.01 ms. Allocated memory is still 156.2 MB. Free memory was 121.8 MB in the beginning and 120.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 338.17 ms. Allocated memory is still 156.2 MB. Free memory was 120.3 MB in the beginning and 107.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11798.67 ms. Allocated memory was 156.2 MB in the beginning and 270.5 MB in the end (delta: 114.3 MB). Free memory was 106.9 MB in the beginning and 126.0 MB in the end (delta: -19.1 MB). Peak memory consumption was 95.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.4s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 176 SDtfs, 250 SDslu, 422 SDs, 0 SdLazy, 1437 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 20 PreInvPairs, 20 NumberOfFragments, 51 HoareAnnotationTreeSize, 20 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 188 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 288 NumberOfCodeBlocks, 288 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 280 ConstructedInterpolants, 0 QuantifiedInterpolants, 36764 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 123/180 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...