/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:19:11,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:19:11,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:19:11,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:19:11,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:19:11,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:19:11,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:19:11,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:19:11,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:19:11,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:19:11,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:19:11,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:19:11,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:19:11,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:19:11,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:19:11,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:19:11,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:19:11,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:19:11,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:19:11,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:19:11,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:19:11,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:19:11,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:19:11,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:19:11,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:19:11,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:19:11,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:19:11,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:19:11,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:19:11,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:19:11,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:19:11,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:19:11,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:19:11,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:19:11,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:19:11,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:19:11,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:19:11,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:19:11,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:19:11,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:19:11,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:19:11,102 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 [2020-10-14 19:19:11,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:19:11,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:19:11,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:19:11,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:19:11,126 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:19:11,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:19:11,127 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:19:11,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:19:11,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:19:11,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:19:11,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:19:11,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:19:11,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:19:11,128 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:19:11,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:19:11,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:19:11,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:19:11,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:19:11,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:19:11,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:19:11,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:19:11,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:19:11,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:19:11,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:19:11,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:19:11,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:19:11,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:19:11,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:19:11,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:19:11,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:19:11,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:19:11,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:19:11,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:19:11,467 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:19:11,469 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:19:11,470 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label02.c [2020-10-14 19:19:11,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5513d3bfe/e054850012ba41858ff8d7b254140f60/FLAGcc8016129 [2020-10-14 19:19:12,378 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:19:12,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label02.c [2020-10-14 19:19:12,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5513d3bfe/e054850012ba41858ff8d7b254140f60/FLAGcc8016129 [2020-10-14 19:19:12,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5513d3bfe/e054850012ba41858ff8d7b254140f60 [2020-10-14 19:19:12,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:19:12,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:19:12,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:19:12,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:19:12,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:19:12,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:19:12" (1/1) ... [2020-10-14 19:19:12,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fcb34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:12, skipping insertion in model container [2020-10-14 19:19:12,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:19:12" (1/1) ... [2020-10-14 19:19:12,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:19:13,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:19:14,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:19:14,729 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:19:15,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:19:15,431 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:19:15,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:15 WrapperNode [2020-10-14 19:19:15,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:19:15,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:19:15,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:19:15,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:19:15,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:15" (1/1) ... [2020-10-14 19:19:15,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:15" (1/1) ... [2020-10-14 19:19:15,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:15" (1/1) ... [2020-10-14 19:19:15,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:15" (1/1) ... [2020-10-14 19:19:15,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:15" (1/1) ... [2020-10-14 19:19:15,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:15" (1/1) ... [2020-10-14 19:19:15,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:15" (1/1) ... [2020-10-14 19:19:15,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:19:15,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:19:15,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:19:15,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:19:15,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:15" (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 [2020-10-14 19:19:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:19:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:19:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:19:15,759 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 19:19:15,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 19:19:15,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 19:19:15,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:19:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:19:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 19:19:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 19:19:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 19:19:15,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:19:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:19:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:19:15,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:19:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:19:15,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:19:20,081 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:19:20,082 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:19:20,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:19:20 BoogieIcfgContainer [2020-10-14 19:19:20,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:19:20,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:19:20,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:19:20,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:19:20,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:19:12" (1/3) ... [2020-10-14 19:19:20,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68aadc2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:19:20, skipping insertion in model container [2020-10-14 19:19:20,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:19:15" (2/3) ... [2020-10-14 19:19:20,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68aadc2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:19:20, skipping insertion in model container [2020-10-14 19:19:20,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:19:20" (3/3) ... [2020-10-14 19:19:20,123 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label02.c [2020-10-14 19:19:20,134 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:19:20,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:19:20,162 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:19:20,196 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:19:20,196 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:19:20,196 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:19:20,196 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:19:20,196 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:19:20,197 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:19:20,197 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:19:20,197 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:19:20,234 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 19:19:20,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-10-14 19:19:20,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:19:20,285 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:19:20,285 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:19:20,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:19:20,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1081539403, now seen corresponding path program 1 times [2020-10-14 19:19:20,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:19:20,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155763471] [2020-10-14 19:19:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:19:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:21,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:25,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:26,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:26,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 828 [2020-10-14 19:19:26,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:19:26,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5113 [2020-10-14 19:19:26,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:26,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:19:26,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:19:26,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 822 [2020-10-14 19:19:26,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:19:26,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:19:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:26,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:26,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:19:26,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:26,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:19:26,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:26,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:26,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:19:26,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:26,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:19:26,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:19:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:19:28,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155763471] [2020-10-14 19:19:28,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:19:28,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:19:28,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735672965] [2020-10-14 19:19:28,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:19:28,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:19:28,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:19:28,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:19:28,436 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 19:19:36,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:19:36,675 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2020-10-14 19:19:36,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:19:36,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 814 [2020-10-14 19:19:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:19:36,714 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 19:19:36,714 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 19:19:36,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:19:36,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 19:19:36,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2020-10-14 19:19:36,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-10-14 19:19:36,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2729 transitions. [2020-10-14 19:19:36,903 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2729 transitions. Word has length 814 [2020-10-14 19:19:36,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:19:36,905 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 2729 transitions. [2020-10-14 19:19:36,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:19:36,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2729 transitions. [2020-10-14 19:19:36,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2020-10-14 19:19:36,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:19:36,937 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:19:36,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:19:36,938 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:19:36,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:19:36,939 INFO L82 PathProgramCache]: Analyzing trace with hash -219309222, now seen corresponding path program 1 times [2020-10-14 19:19:36,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:19:36,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130240589] [2020-10-14 19:19:36,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:19:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:37,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:42,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:42,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 838 [2020-10-14 19:19:42,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:19:42,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 19:19:42,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:42,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:19:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:19:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 819 [2020-10-14 19:19:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:19:42,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:19:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:42,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:42,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:42,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:19:42,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:42,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:19:42,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:42,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:42,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:19:42,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:42,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:19:42,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:19:42,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:19:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:42,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:42,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:42,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:19:42,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:42,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:19:42,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:42,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:19:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 19:19:42,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:19:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:19:44,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130240589] [2020-10-14 19:19:44,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:19:44,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:19:44,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940941955] [2020-10-14 19:19:44,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:19:44,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:19:44,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:19:44,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:19:44,132 INFO L87 Difference]: Start difference. First operand 1689 states and 2729 transitions. Second operand 5 states. [2020-10-14 19:19:52,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:19:52,843 INFO L93 Difference]: Finished difference Result 5077 states and 8266 transitions. [2020-10-14 19:19:52,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:19:52,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 822 [2020-10-14 19:19:52,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:19:52,864 INFO L225 Difference]: With dead ends: 5077 [2020-10-14 19:19:52,865 INFO L226 Difference]: Without dead ends: 3394 [2020-10-14 19:19:52,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:19:52,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3394 states. [2020-10-14 19:19:52,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3394 to 3390. [2020-10-14 19:19:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3390 states. [2020-10-14 19:19:52,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 5259 transitions. [2020-10-14 19:19:52,963 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 5259 transitions. Word has length 822 [2020-10-14 19:19:52,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:19:52,965 INFO L479 AbstractCegarLoop]: Abstraction has 3390 states and 5259 transitions. [2020-10-14 19:19:52,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:19:52,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 5259 transitions. [2020-10-14 19:19:52,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2020-10-14 19:19:52,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:19:52,981 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:19:52,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:19:52,982 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:19:52,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:19:52,982 INFO L82 PathProgramCache]: Analyzing trace with hash 239626532, now seen corresponding path program 1 times [2020-10-14 19:19:52,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:19:52,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592567811] [2020-10-14 19:19:52,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:19:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:53,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:54,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:55,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:58,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:58,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 845 [2020-10-14 19:19:58,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:19:58,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 19:19:58,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:58,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:19:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:19:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 819 [2020-10-14 19:19:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:19:58,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:19:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:58,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:58,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:58,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:19:58,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:58,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:19:58,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:58,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:19:58,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:58,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:19:58,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:19:58,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:19:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:58,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:58,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:58,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 19:19:58,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:58,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:19:58,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:58,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:58,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:19:58,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:58,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 19:19:58,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:19:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:19:59,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592567811] [2020-10-14 19:19:59,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:19:59,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:19:59,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709281263] [2020-10-14 19:19:59,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:19:59,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:19:59,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:19:59,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:19:59,080 INFO L87 Difference]: Start difference. First operand 3390 states and 5259 transitions. Second operand 6 states. [2020-10-14 19:20:09,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:20:09,137 INFO L93 Difference]: Finished difference Result 10155 states and 15929 transitions. [2020-10-14 19:20:09,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:20:09,141 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 829 [2020-10-14 19:20:09,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:20:09,175 INFO L225 Difference]: With dead ends: 10155 [2020-10-14 19:20:09,175 INFO L226 Difference]: Without dead ends: 6771 [2020-10-14 19:20:09,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:20:09,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2020-10-14 19:20:09,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 6767. [2020-10-14 19:20:09,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6767 states. [2020-10-14 19:20:09,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6767 states to 6767 states and 9392 transitions. [2020-10-14 19:20:09,351 INFO L78 Accepts]: Start accepts. Automaton has 6767 states and 9392 transitions. Word has length 829 [2020-10-14 19:20:09,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:20:09,353 INFO L479 AbstractCegarLoop]: Abstraction has 6767 states and 9392 transitions. [2020-10-14 19:20:09,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:20:09,353 INFO L276 IsEmpty]: Start isEmpty. Operand 6767 states and 9392 transitions. [2020-10-14 19:20:09,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2020-10-14 19:20:09,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:20:09,376 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:20:09,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:20:09,377 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:20:09,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:20:09,378 INFO L82 PathProgramCache]: Analyzing trace with hash -674315011, now seen corresponding path program 1 times [2020-10-14 19:20:09,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:20:09,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619629741] [2020-10-14 19:20:09,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:20:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:09,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:09,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:10,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:14,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:14,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 883 [2020-10-14 19:20:14,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:20:14,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 19:20:14,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:14,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 19:20:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 19:20:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 689 [2020-10-14 19:20:14,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:18,602 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-10-14 19:20:18,799 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2020-10-14 19:20:19,052 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 52 [2020-10-14 19:20:19,219 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2020-10-14 19:20:19,505 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-14 19:20:19,703 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-10-14 19:20:19,985 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 47 [2020-10-14 19:20:20,243 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 43 [2020-10-14 19:20:20,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:20:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:20,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:20,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:20,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:20:20,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:20,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:20:20,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:20,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:20,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:20,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:20,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:20:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:20,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:20,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:20,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:20:20,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:20,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:20:20,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:20,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:20,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:20,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:20,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:20,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:20:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:20,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:20,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:20,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 19:20:20,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:20,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 19:20:20,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:20,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:20,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:20:20,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:20,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 19:20:20,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:20:27,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619629741] [2020-10-14 19:20:27,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:20:27,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 19:20:27,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066681297] [2020-10-14 19:20:27,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 19:20:27,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:20:27,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 19:20:27,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-14 19:20:28,000 INFO L87 Difference]: Start difference. First operand 6767 states and 9392 transitions. Second operand 19 states. [2020-10-14 19:20:29,116 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-14 19:20:29,321 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:20:33,583 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2020-10-14 19:20:35,136 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2020-10-14 19:20:37,732 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-14 19:20:37,930 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-14 19:20:45,869 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-14 19:20:46,084 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-14 19:20:48,124 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2020-10-14 19:20:49,708 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-10-14 19:20:51,737 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-10-14 19:20:55,192 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 19:20:55,355 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-14 19:20:57,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:20:57,244 INFO L93 Difference]: Finished difference Result 14212 states and 20190 transitions. [2020-10-14 19:20:57,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 19:20:57,245 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 865 [2020-10-14 19:20:57,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:20:57,277 INFO L225 Difference]: With dead ends: 14212 [2020-10-14 19:20:57,277 INFO L226 Difference]: Without dead ends: 7451 [2020-10-14 19:20:57,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992 [2020-10-14 19:20:57,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7451 states. [2020-10-14 19:20:57,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7451 to 7447. [2020-10-14 19:20:57,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7447 states. [2020-10-14 19:20:57,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7447 states to 7447 states and 10086 transitions. [2020-10-14 19:20:57,456 INFO L78 Accepts]: Start accepts. Automaton has 7447 states and 10086 transitions. Word has length 865 [2020-10-14 19:20:57,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:20:57,457 INFO L479 AbstractCegarLoop]: Abstraction has 7447 states and 10086 transitions. [2020-10-14 19:20:57,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 19:20:57,457 INFO L276 IsEmpty]: Start isEmpty. Operand 7447 states and 10086 transitions. [2020-10-14 19:20:57,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2020-10-14 19:20:57,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:20:57,488 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:20:57,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:20:57,488 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:20:57,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:20:57,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1364384107, now seen corresponding path program 1 times [2020-10-14 19:20:57,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:20:57,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286612715] [2020-10-14 19:20:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:20:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:57,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:57,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:00,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:02,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:02,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 890 [2020-10-14 19:21:02,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:21:02,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 19:21:02,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:02,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:02,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:21:02,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 19:21:02,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 555 [2020-10-14 19:21:02,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:04,771 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-14 19:21:04,947 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-10-14 19:21:05,135 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2020-10-14 19:21:05,420 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 52 [2020-10-14 19:21:05,576 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 35 [2020-10-14 19:21:06,068 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 39 [2020-10-14 19:21:06,260 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 40 [2020-10-14 19:21:06,583 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 47 [2020-10-14 19:21:06,810 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 44 [2020-10-14 19:21:06,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:21:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:06,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:06,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:06,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:21:06,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:06,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:21:06,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:06,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:06,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:06,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:06,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:21:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:06,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:06,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:06,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:21:06,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:06,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:21:06,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:06,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:06,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:06,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:06,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:06,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:21:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:06,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:06,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:06,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 19:21:06,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:06,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 19:21:06,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:06,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:06,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:21:06,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:06,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 19:21:06,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:21:11,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286612715] [2020-10-14 19:21:11,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:21:11,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 19:21:11,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303101451] [2020-10-14 19:21:11,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 19:21:11,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:21:11,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 19:21:11,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:21:11,387 INFO L87 Difference]: Start difference. First operand 7447 states and 10086 transitions. Second operand 17 states. [2020-10-14 19:21:12,102 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-14 19:21:12,280 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-14 19:21:13,645 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 100 [2020-10-14 19:21:14,502 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-10-14 19:21:18,530 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 19:21:21,029 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-14 19:21:24,397 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-14 19:21:24,551 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-14 19:21:25,688 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2020-10-14 19:21:26,532 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-10-14 19:21:29,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:21:29,553 INFO L93 Difference]: Finished difference Result 15440 states and 21306 transitions. [2020-10-14 19:21:29,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:21:29,559 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 872 [2020-10-14 19:21:29,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:21:29,590 INFO L225 Difference]: With dead ends: 15440 [2020-10-14 19:21:29,590 INFO L226 Difference]: Without dead ends: 7999 [2020-10-14 19:21:29,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2020-10-14 19:21:29,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7999 states. [2020-10-14 19:21:29,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7999 to 7995. [2020-10-14 19:21:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7995 states. [2020-10-14 19:21:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7995 states to 7995 states and 10645 transitions. [2020-10-14 19:21:29,762 INFO L78 Accepts]: Start accepts. Automaton has 7995 states and 10645 transitions. Word has length 872 [2020-10-14 19:21:29,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:21:29,763 INFO L479 AbstractCegarLoop]: Abstraction has 7995 states and 10645 transitions. [2020-10-14 19:21:29,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 19:21:29,763 INFO L276 IsEmpty]: Start isEmpty. Operand 7995 states and 10645 transitions. [2020-10-14 19:21:29,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2020-10-14 19:21:29,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:21:29,788 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:21:29,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:21:29,789 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:21:29,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:21:29,790 INFO L82 PathProgramCache]: Analyzing trace with hash -2042471075, now seen corresponding path program 1 times [2020-10-14 19:21:29,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:21:29,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127735938] [2020-10-14 19:21:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:21:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:29,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:30,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:33,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:33,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:34,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:34,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 918 [2020-10-14 19:21:34,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:21:34,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-14 19:21:34,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:34,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:21:34,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 19:21:34,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 819 [2020-10-14 19:21:34,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:21:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:35,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:35,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:35,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:21:35,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:35,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:21:35,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:35,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:35,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:35,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:35,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:21:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:35,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:35,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:35,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:21:35,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:35,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:21:35,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:35,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:35,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:35,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:21:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:35,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:35,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:35,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 19:21:35,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 19:21:35,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:35,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:21:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 19:21:35,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:21:35,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127735938] [2020-10-14 19:21:35,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:21:35,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:21:35,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832869544] [2020-10-14 19:21:35,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:21:35,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:21:35,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:21:35,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:21:35,868 INFO L87 Difference]: Start difference. First operand 7995 states and 10645 transitions. Second operand 5 states. [2020-10-14 19:21:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:21:46,481 INFO L93 Difference]: Finished difference Result 19362 states and 26713 transitions. [2020-10-14 19:21:46,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:21:46,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 900 [2020-10-14 19:21:46,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:21:46,522 INFO L225 Difference]: With dead ends: 19362 [2020-10-14 19:21:46,522 INFO L226 Difference]: Without dead ends: 11373 [2020-10-14 19:21:46,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:21:46,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11373 states. [2020-10-14 19:21:46,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11373 to 11369. [2020-10-14 19:21:46,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11369 states. [2020-10-14 19:21:46,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11369 states to 11369 states and 14870 transitions. [2020-10-14 19:21:46,801 INFO L78 Accepts]: Start accepts. Automaton has 11369 states and 14870 transitions. Word has length 900 [2020-10-14 19:21:46,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:21:46,804 INFO L479 AbstractCegarLoop]: Abstraction has 11369 states and 14870 transitions. [2020-10-14 19:21:46,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:21:46,805 INFO L276 IsEmpty]: Start isEmpty. Operand 11369 states and 14870 transitions. [2020-10-14 19:21:46,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2020-10-14 19:21:46,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:21:46,843 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:21:46,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:21:46,844 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:21:46,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:21:46,844 INFO L82 PathProgramCache]: Analyzing trace with hash -210292268, now seen corresponding path program 1 times [2020-10-14 19:21:46,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:21:46,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126201559] [2020-10-14 19:21:46,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:21:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:46,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:47,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:49,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:51,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:51,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:51,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 940 [2020-10-14 19:21:51,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:21:51,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 19:21:51,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:51,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:21:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:21:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 19:21:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:52,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:21:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:52,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:52,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:21:52,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:52,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:21:52,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:52,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:21:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:21:52,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:21:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:21:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:52,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:52,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:52,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 19:21:52,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:21:52,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:52,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:21:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:21:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 19:21:52,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:52,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 19:21:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:52,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:52,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:52,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:52,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 19:21:52,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:21:52,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 19:21:52,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:52,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:21:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:21:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 19:21:52,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:52,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 19:21:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:21:52,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:21:52,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:21:52,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:21:52,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:21:52,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:21:52,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:21:52,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:21:52,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:21:52,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:21:52,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 19:21:52,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:21:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 107 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 19:21:52,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126201559] [2020-10-14 19:21:52,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:21:52,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:21:52,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712096728] [2020-10-14 19:21:52,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:21:52,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:21:52,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:21:52,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:21:52,651 INFO L87 Difference]: Start difference. First operand 11369 states and 14870 transitions. Second operand 7 states. [2020-10-14 19:22:04,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:22:04,205 INFO L93 Difference]: Finished difference Result 22900 states and 30000 transitions. [2020-10-14 19:22:04,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:22:04,211 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 920 [2020-10-14 19:22:04,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:22:04,244 INFO L225 Difference]: With dead ends: 22900 [2020-10-14 19:22:04,245 INFO L226 Difference]: Without dead ends: 11537 [2020-10-14 19:22:04,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:22:04,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11537 states. [2020-10-14 19:22:04,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11537 to 11517. [2020-10-14 19:22:04,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11517 states. [2020-10-14 19:22:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11517 states to 11517 states and 13592 transitions. [2020-10-14 19:22:04,470 INFO L78 Accepts]: Start accepts. Automaton has 11517 states and 13592 transitions. Word has length 920 [2020-10-14 19:22:04,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:22:04,471 INFO L479 AbstractCegarLoop]: Abstraction has 11517 states and 13592 transitions. [2020-10-14 19:22:04,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:22:04,471 INFO L276 IsEmpty]: Start isEmpty. Operand 11517 states and 13592 transitions. [2020-10-14 19:22:04,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2020-10-14 19:22:04,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:22:04,505 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:22:04,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:22:04,505 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:22:04,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:22:04,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1723997869, now seen corresponding path program 1 times [2020-10-14 19:22:04,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:22:04,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384054808] [2020-10-14 19:22:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:22:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:04,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:04,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:08,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:09,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:09,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 974 [2020-10-14 19:22:09,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:22:09,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-14 19:22:09,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:09,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:22:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-14 19:22:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 819 [2020-10-14 19:22:09,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:09,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:22:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:09,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:09,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:09,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:22:09,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:09,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 19:22:09,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:09,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:09,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:09,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:09,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:09,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:10,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:22:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:10,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:10,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:10,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 19:22:10,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 19:22:10,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:10,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:10,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:22:10,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 19:22:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:10,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:10,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:10,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 19:22:10,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:22:10,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:10,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:22:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 19:22:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 19:22:10,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384054808] [2020-10-14 19:22:10,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:22:10,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:22:10,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868797383] [2020-10-14 19:22:10,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:22:10,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:22:10,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:22:10,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:22:10,677 INFO L87 Difference]: Start difference. First operand 11517 states and 13592 transitions. Second operand 5 states. [2020-10-14 19:22:19,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:22:19,809 INFO L93 Difference]: Finished difference Result 32334 states and 38910 transitions. [2020-10-14 19:22:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:22:19,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 956 [2020-10-14 19:22:19,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:22:19,863 INFO L225 Difference]: With dead ends: 32334 [2020-10-14 19:22:19,864 INFO L226 Difference]: Without dead ends: 20823 [2020-10-14 19:22:19,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:22:19,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20823 states. [2020-10-14 19:22:20,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20823 to 20811. [2020-10-14 19:22:20,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20811 states. [2020-10-14 19:22:20,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20811 states to 20811 states and 24025 transitions. [2020-10-14 19:22:20,232 INFO L78 Accepts]: Start accepts. Automaton has 20811 states and 24025 transitions. Word has length 956 [2020-10-14 19:22:20,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:22:20,233 INFO L479 AbstractCegarLoop]: Abstraction has 20811 states and 24025 transitions. [2020-10-14 19:22:20,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:22:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 20811 states and 24025 transitions. [2020-10-14 19:22:20,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2020-10-14 19:22:20,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:22:20,277 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:22:20,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:22:20,277 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:22:20,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:22:20,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1919753642, now seen corresponding path program 1 times [2020-10-14 19:22:20,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:22:20,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855353302] [2020-10-14 19:22:20,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:22:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:20,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:20,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:20,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:22,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:25,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:25,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 981 [2020-10-14 19:22:25,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:22:25,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 19:22:25,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:25,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:25,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:22:25,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 19:22:25,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 19:22:25,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:25,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:22:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:25,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:25,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:25,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:22:25,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:22:25,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:25,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:25,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:25,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:22:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:25,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:25,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:25,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 19:22:25,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:25,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 19:22:25,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:25,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:22:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 19:22:25,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:25,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 19:22:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:25,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:25,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:25,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:25,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 19:22:25,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:22:25,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 19:22:25,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:25,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:22:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:22:25,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 19:22:25,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:25,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 19:22:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:25,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:25,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:25,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 19:22:25,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:25,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:22:25,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:25,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:25,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:22:25,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:22:25,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:22:25,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 215 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 19:22:26,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855353302] [2020-10-14 19:22:26,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:22:26,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:22:26,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937795028] [2020-10-14 19:22:26,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:22:26,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:22:26,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:22:26,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:22:26,360 INFO L87 Difference]: Start difference. First operand 20811 states and 24025 transitions. Second operand 8 states. [2020-10-14 19:22:37,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:22:37,204 INFO L93 Difference]: Finished difference Result 56968 states and 66921 transitions. [2020-10-14 19:22:37,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:22:37,205 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 961 [2020-10-14 19:22:37,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:22:37,295 INFO L225 Difference]: With dead ends: 56968 [2020-10-14 19:22:37,295 INFO L226 Difference]: Without dead ends: 31649 [2020-10-14 19:22:37,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:22:37,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31649 states. [2020-10-14 19:22:37,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31649 to 29046. [2020-10-14 19:22:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29046 states. [2020-10-14 19:22:37,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29046 states to 29046 states and 30835 transitions. [2020-10-14 19:22:37,907 INFO L78 Accepts]: Start accepts. Automaton has 29046 states and 30835 transitions. Word has length 961 [2020-10-14 19:22:37,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:22:37,908 INFO L479 AbstractCegarLoop]: Abstraction has 29046 states and 30835 transitions. [2020-10-14 19:22:37,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:22:37,908 INFO L276 IsEmpty]: Start isEmpty. Operand 29046 states and 30835 transitions. [2020-10-14 19:22:37,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2020-10-14 19:22:37,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:22:37,944 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:22:37,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:22:37,945 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:22:37,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:22:37,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1372723161, now seen corresponding path program 1 times [2020-10-14 19:22:37,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:22:37,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059133908] [2020-10-14 19:22:37,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:22:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:38,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:38,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:38,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:43,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:43,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1048 [2020-10-14 19:22:43,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:22:43,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 19:22:43,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:43,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 19:22:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-14 19:22:43,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 614 [2020-10-14 19:22:43,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:44,325 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 35 [2020-10-14 19:22:44,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:22:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:44,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:44,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:44,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:22:44,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:44,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:22:44,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:44,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:44,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:44,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:22:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:44,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:44,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:44,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 19:22:44,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:22:44,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:44,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:22:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:22:44,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:22:44,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 19:22:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:22:44,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:22:44,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:22:44,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 19:22:44,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:22:44,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 19:22:44,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:22:44,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:22:44,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:22:44,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:22:44,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 19:22:44,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0