/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/Problem16_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:14:11,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:14:11,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:14:11,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:14:11,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:14:11,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:14:11,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:14:11,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:14:11,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:14:11,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:14:11,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:14:11,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:14:11,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:14:11,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:14:11,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:14:11,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:14:11,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:14:11,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:14:11,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:14:11,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:14:11,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:14:11,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:14:11,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:14:11,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:14:11,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:14:11,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:14:11,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:14:11,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:14:11,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:14:11,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:14:11,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:14:11,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:14:11,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:14:11,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:14:11,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:14:11,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:14:11,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:14:11,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:14:11,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:14:11,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:14:11,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:14:11,067 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 22:14:11,113 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:14:11,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:14:11,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:14:11,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:14:11,118 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:14:11,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:14:11,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:14:11,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:14:11,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:14:11,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:14:11,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:14:11,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:14:11,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:14:11,119 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:14:11,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:14:11,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:14:11,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:14:11,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:14:11,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:14:11,120 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:14:11,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:14:11,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:14:11,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:14:11,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:14:11,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:14:11,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:14:11,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:14:11,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:14:11,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:14:11,124 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 22:14:11,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:14:11,491 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:14:11,494 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:14:11,496 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:14:11,496 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:14:11,497 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label25.c [2020-10-14 22:14:11,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcb088b44/108e0de9a325465a8b6a8bd068bebcaf/FLAG4d1894f25 [2020-10-14 22:14:12,239 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:14:12,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label25.c [2020-10-14 22:14:12,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcb088b44/108e0de9a325465a8b6a8bd068bebcaf/FLAG4d1894f25 [2020-10-14 22:14:12,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcb088b44/108e0de9a325465a8b6a8bd068bebcaf [2020-10-14 22:14:12,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:14:12,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:14:12,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:14:12,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:14:12,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:14:12,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:14:12" (1/1) ... [2020-10-14 22:14:12,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8c36e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:14:12, skipping insertion in model container [2020-10-14 22:14:12,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:14:12" (1/1) ... [2020-10-14 22:14:12,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:14:12,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:14:13,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:14:13,290 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:14:13,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:14:13,671 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:14:13,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:14:13 WrapperNode [2020-10-14 22:14:13,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:14:13,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:14:13,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:14:13,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:14:13,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:14:13" (1/1) ... [2020-10-14 22:14:13,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:14:13" (1/1) ... [2020-10-14 22:14:13,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:14:13" (1/1) ... [2020-10-14 22:14:13,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:14:13" (1/1) ... [2020-10-14 22:14:13,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:14:13" (1/1) ... [2020-10-14 22:14:13,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:14:13" (1/1) ... [2020-10-14 22:14:13,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:14:13" (1/1) ... [2020-10-14 22:14:13,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:14:13,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:14:13,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:14:13,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:14:13,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:14:13" (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 22:14:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:14:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:14:13,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:14:13,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:14:13,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:14:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:14:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:14:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:14:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:14:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:14:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:14:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:14:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:14:16,345 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:14:16,345 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:14:16,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:14:16 BoogieIcfgContainer [2020-10-14 22:14:16,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:14:16,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:14:16,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:14:16,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:14:16,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:14:12" (1/3) ... [2020-10-14 22:14:16,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e47dc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:14:16, skipping insertion in model container [2020-10-14 22:14:16,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:14:13" (2/3) ... [2020-10-14 22:14:16,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e47dc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:14:16, skipping insertion in model container [2020-10-14 22:14:16,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:14:16" (3/3) ... [2020-10-14 22:14:16,364 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label25.c [2020-10-14 22:14:16,376 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:14:16,391 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:14:16,406 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:14:16,444 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:14:16,444 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:14:16,444 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:14:16,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:14:16,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:14:16,445 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:14:16,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:14:16,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:14:16,473 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-14 22:14:16,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 22:14:16,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:16,484 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] [2020-10-14 22:14:16,484 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:16,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:16,491 INFO L82 PathProgramCache]: Analyzing trace with hash 134360965, now seen corresponding path program 1 times [2020-10-14 22:14:16,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:16,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093262711] [2020-10-14 22:14:16,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:16,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:17,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:17,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 22:14:17,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:17,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-14 22:14:17,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:17,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:17,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:14:17,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:14:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 22:14:17,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:14:17,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:17,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:17,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:17,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:17,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:17,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:14:17,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:17,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:17,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:14:17,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:17,259 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 22:14:17,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093262711] [2020-10-14 22:14:17,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:14:17,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:14:17,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722443341] [2020-10-14 22:14:17,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:14:17,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:17,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:14:17,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:14:17,287 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-14 22:14:20,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:20,625 INFO L93 Difference]: Finished difference Result 1169 states and 2165 transitions. [2020-10-14 22:14:20,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:14:20,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-14 22:14:20,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:20,649 INFO L225 Difference]: With dead ends: 1169 [2020-10-14 22:14:20,649 INFO L226 Difference]: Without dead ends: 696 [2020-10-14 22:14:20,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:14:20,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-14 22:14:20,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 689. [2020-10-14 22:14:20,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-14 22:14:20,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1077 transitions. [2020-10-14 22:14:20,799 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1077 transitions. Word has length 56 [2020-10-14 22:14:20,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:20,800 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 1077 transitions. [2020-10-14 22:14:20,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:14:20,801 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1077 transitions. [2020-10-14 22:14:20,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 22:14:20,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:20,816 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:14:20,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:14:20,816 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:20,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:20,817 INFO L82 PathProgramCache]: Analyzing trace with hash 157682093, now seen corresponding path program 1 times [2020-10-14 22:14:20,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:20,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27400171] [2020-10-14 22:14:20,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:20,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:21,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:21,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:21,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 22:14:21,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:14:21,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-10-14 22:14:21,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:21,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:14:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:14:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:14:21,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:14:21,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:21,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:21,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:21,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:21,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:21,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:14:21,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:21,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:21,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:14:21,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:21,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:14:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:21,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:22,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:22,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:14:22,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:22,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 22:14:22,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:22,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:14:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:14:22,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:14:22,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27400171] [2020-10-14 22:14:22,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:14:22,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 22:14:22,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636376855] [2020-10-14 22:14:22,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:14:22,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:22,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:14:22,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:14:22,170 INFO L87 Difference]: Start difference. First operand 689 states and 1077 transitions. Second operand 8 states. [2020-10-14 22:14:25,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:25,965 INFO L93 Difference]: Finished difference Result 1739 states and 2661 transitions. [2020-10-14 22:14:25,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:14:25,966 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 131 [2020-10-14 22:14:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:25,977 INFO L225 Difference]: With dead ends: 1739 [2020-10-14 22:14:25,977 INFO L226 Difference]: Without dead ends: 1056 [2020-10-14 22:14:25,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:14:25,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-10-14 22:14:26,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1039. [2020-10-14 22:14:26,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-10-14 22:14:26,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1423 transitions. [2020-10-14 22:14:26,047 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1423 transitions. Word has length 131 [2020-10-14 22:14:26,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:26,050 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1423 transitions. [2020-10-14 22:14:26,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:14:26,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1423 transitions. [2020-10-14 22:14:26,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 22:14:26,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:26,058 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:14:26,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:14:26,059 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:26,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:26,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1658309688, now seen corresponding path program 1 times [2020-10-14 22:14:26,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:26,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348661430] [2020-10-14 22:14:26,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:26,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:26,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:27,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:27,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 22:14:27,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:14:27,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-10-14 22:14:27,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:27,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:14:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:14:27,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:14:27,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:27,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:27,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:27,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:27,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:27,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:27,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:14:27,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:27,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:27,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:27,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:27,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:14:27,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:27,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:14:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:27,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:27,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:27,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:14:27,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:27,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 22:14:27,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:27,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:14:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 22:14:27,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:14:27,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348661430] [2020-10-14 22:14:27,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:14:27,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:14:27,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883310606] [2020-10-14 22:14:27,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:14:27,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:27,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:14:27,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:14:27,421 INFO L87 Difference]: Start difference. First operand 1039 states and 1423 transitions. Second operand 7 states. [2020-10-14 22:14:31,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:31,565 INFO L93 Difference]: Finished difference Result 3164 states and 4409 transitions. [2020-10-14 22:14:31,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:14:31,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-14 22:14:31,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:31,587 INFO L225 Difference]: With dead ends: 3164 [2020-10-14 22:14:31,587 INFO L226 Difference]: Without dead ends: 2131 [2020-10-14 22:14:31,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:14:31,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2020-10-14 22:14:31,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2088. [2020-10-14 22:14:31,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2088 states. [2020-10-14 22:14:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 2623 transitions. [2020-10-14 22:14:31,666 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 2623 transitions. Word has length 132 [2020-10-14 22:14:31,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:31,667 INFO L479 AbstractCegarLoop]: Abstraction has 2088 states and 2623 transitions. [2020-10-14 22:14:31,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:14:31,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 2623 transitions. [2020-10-14 22:14:31,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-14 22:14:31,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:31,671 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, 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, 1, 1, 1, 1, 1, 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 22:14:31,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:14:31,671 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:31,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:31,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1023128568, now seen corresponding path program 1 times [2020-10-14 22:14:31,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:31,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516263884] [2020-10-14 22:14:31,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:31,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:31,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:32,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:32,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:33,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:34,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:36,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:36,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 22:14:36,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 22:14:36,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4597 [2020-10-14 22:14:36,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:36,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:36,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 22:14:36,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:14:36,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 225 [2020-10-14 22:14:36,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:36,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:36,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:36,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:36,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:36,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:14:36,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:36,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:14:36,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:36,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:14:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:36,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:36,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:36,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:36,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:14:36,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:14:36,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 22:14:36,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:36,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:36,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:36,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:36,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 22:14:36,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:36,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 22:14:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:36,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:36,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:36,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:36,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:36,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 22:14:36,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:14:36,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-14 22:14:36,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:36,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:36,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:36,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:36,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 22:14:36,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 90 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 22:14:37,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516263884] [2020-10-14 22:14:37,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:14:37,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:14:37,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254090258] [2020-10-14 22:14:37,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:14:37,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:37,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:14:37,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:14:37,045 INFO L87 Difference]: Start difference. First operand 2088 states and 2623 transitions. Second operand 7 states. [2020-10-14 22:14:44,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:44,009 INFO L93 Difference]: Finished difference Result 6590 states and 8568 transitions. [2020-10-14 22:14:44,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:14:44,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2020-10-14 22:14:44,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:44,038 INFO L225 Difference]: With dead ends: 6590 [2020-10-14 22:14:44,038 INFO L226 Difference]: Without dead ends: 4508 [2020-10-14 22:14:44,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:14:44,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4508 states. [2020-10-14 22:14:44,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4508 to 3487. [2020-10-14 22:14:44,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3487 states. [2020-10-14 22:14:44,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3487 states to 3487 states and 4434 transitions. [2020-10-14 22:14:44,174 INFO L78 Accepts]: Start accepts. Automaton has 3487 states and 4434 transitions. Word has length 219 [2020-10-14 22:14:44,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:44,176 INFO L479 AbstractCegarLoop]: Abstraction has 3487 states and 4434 transitions. [2020-10-14 22:14:44,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:14:44,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3487 states and 4434 transitions. [2020-10-14 22:14:44,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-10-14 22:14:44,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:44,191 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:14:44,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:14:44,192 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:44,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:44,192 INFO L82 PathProgramCache]: Analyzing trace with hash 305968654, now seen corresponding path program 1 times [2020-10-14 22:14:44,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:44,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651306595] [2020-10-14 22:14:44,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:44,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:44,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:44,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:44,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:49,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:49,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 523 [2020-10-14 22:14:49,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:14:49,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 22:14:49,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:49,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 241 [2020-10-14 22:14:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 22:14:49,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:49,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:14:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:49,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:49,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:14:49,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:49,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:14:49,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:49,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:49,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:49,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:14:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:49,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:49,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:49,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:14:49,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:49,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 22:14:49,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:49,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:49,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:49,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:49,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:49,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:49,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 22:14:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:49,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:49,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:49,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:14:49,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:49,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 22:14:49,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:49,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:14:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:14:49,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 22:14:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:14:49,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-14 22:14:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:49,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:49,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:49,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:14:49,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:49,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 22:14:49,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:49,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:49,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:14:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:14:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 22:14:49,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:49,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-14 22:14:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:49,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:49,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:14:49,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 22:14:49,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:14:49,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 22:14:49,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:14:49,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:14:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:14:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 22:14:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:14:49,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:14:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 418 proven. 106 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-14 22:14:50,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651306595] [2020-10-14 22:14:50,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:14:50,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:14:50,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466554103] [2020-10-14 22:14:50,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:14:50,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:14:50,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:14:50,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:14:50,285 INFO L87 Difference]: Start difference. First operand 3487 states and 4434 transitions. Second operand 7 states. [2020-10-14 22:14:54,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:14:54,737 INFO L93 Difference]: Finished difference Result 8366 states and 10960 transitions. [2020-10-14 22:14:54,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:14:54,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 507 [2020-10-14 22:14:54,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:14:54,766 INFO L225 Difference]: With dead ends: 8366 [2020-10-14 22:14:54,766 INFO L226 Difference]: Without dead ends: 4885 [2020-10-14 22:14:54,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:14:54,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4885 states. [2020-10-14 22:14:54,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4885 to 4867. [2020-10-14 22:14:54,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4867 states. [2020-10-14 22:14:54,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4867 states to 4867 states and 6013 transitions. [2020-10-14 22:14:54,899 INFO L78 Accepts]: Start accepts. Automaton has 4867 states and 6013 transitions. Word has length 507 [2020-10-14 22:14:54,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:14:54,900 INFO L479 AbstractCegarLoop]: Abstraction has 4867 states and 6013 transitions. [2020-10-14 22:14:54,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:14:54,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4867 states and 6013 transitions. [2020-10-14 22:14:54,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2020-10-14 22:14:54,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:14:54,925 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:14:54,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:14:54,925 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:14:54,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:14:54,926 INFO L82 PathProgramCache]: Analyzing trace with hash 173834457, now seen corresponding path program 1 times [2020-10-14 22:14:54,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:14:54,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676681657] [2020-10-14 22:14:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:14:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:14:55,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:55,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:55,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:14:56,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:00,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:00,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 689 [2020-10-14 22:15:00,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:15:00,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 22:15:00,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:00,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:00,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:15:00,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:15:00,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-14 22:15:00,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:00,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:00,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:00,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:00,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:00,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:15:00,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:00,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:15:00,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:00,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:00,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:00,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:00,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:15:00,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:00,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-14 22:15:00,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:00,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:00,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:00,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:00,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 22:15:00,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:00,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-14 22:15:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:00,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:01,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:01,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 22:15:01,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:01,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 22:15:01,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:01,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:01,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:01,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-14 22:15:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:01,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:15:01,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-14 22:15:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:01,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:01,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:01,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 22:15:01,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:01,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 22:15:01,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:01,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:01,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:01,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 22:15:01,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:01,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 147 proven. 360 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2020-10-14 22:15:01,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676681657] [2020-10-14 22:15:01,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:15:01,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:15:01,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870621772] [2020-10-14 22:15:01,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:15:01,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:15:01,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:15:01,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:15:01,782 INFO L87 Difference]: Start difference. First operand 4867 states and 6013 transitions. Second operand 7 states. [2020-10-14 22:15:05,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:15:05,643 INFO L93 Difference]: Finished difference Result 10495 states and 12959 transitions. [2020-10-14 22:15:05,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:15:05,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 675 [2020-10-14 22:15:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:15:05,681 INFO L225 Difference]: With dead ends: 10495 [2020-10-14 22:15:05,681 INFO L226 Difference]: Without dead ends: 5634 [2020-10-14 22:15:05,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:15:05,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5634 states. [2020-10-14 22:15:05,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5634 to 5584. [2020-10-14 22:15:05,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5584 states. [2020-10-14 22:15:05,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5584 states to 5584 states and 6825 transitions. [2020-10-14 22:15:05,850 INFO L78 Accepts]: Start accepts. Automaton has 5584 states and 6825 transitions. Word has length 675 [2020-10-14 22:15:05,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:15:05,851 INFO L479 AbstractCegarLoop]: Abstraction has 5584 states and 6825 transitions. [2020-10-14 22:15:05,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:15:05,851 INFO L276 IsEmpty]: Start isEmpty. Operand 5584 states and 6825 transitions. [2020-10-14 22:15:05,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2020-10-14 22:15:05,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:15:05,886 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:05,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:15:05,887 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:15:05,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:15:05,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1466667729, now seen corresponding path program 1 times [2020-10-14 22:15:05,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:15:05,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132797669] [2020-10-14 22:15:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:15:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:06,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:06,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:07,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:09,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:11,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:11,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 782 [2020-10-14 22:15:11,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:15:11,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 22:15:11,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:11,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:11,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:11,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 22:15:11,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-14 22:15:11,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:11,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:11,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:11,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:11,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:11,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:11,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:15:11,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:11,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:11,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:11,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:11,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:11,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:11,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:15:11,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 22:15:11,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:11,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 22:15:11,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:11,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 22:15:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:11,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:11,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:11,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:15:11,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:11,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-14 22:15:11,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:11,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:11,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 22:15:11,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:12,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-14 22:15:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:12,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:12,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:12,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 22:15:12,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:12,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 22:15:12,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:12,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-14 22:15:12,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:12,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:12,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-10-14 22:15:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:12,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:12,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:12,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 22:15:12,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:12,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 22:15:12,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:12,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:12,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:12,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 22:15:12,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:12,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 292 proven. 366 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-10-14 22:15:13,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132797669] [2020-10-14 22:15:13,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:15:13,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:15:13,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620147166] [2020-10-14 22:15:13,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:15:13,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:15:13,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:15:13,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:15:13,274 INFO L87 Difference]: Start difference. First operand 5584 states and 6825 transitions. Second operand 8 states. [2020-10-14 22:15:20,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:15:20,260 INFO L93 Difference]: Finished difference Result 14018 states and 17690 transitions. [2020-10-14 22:15:20,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 22:15:20,261 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 766 [2020-10-14 22:15:20,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:15:20,301 INFO L225 Difference]: With dead ends: 14018 [2020-10-14 22:15:20,302 INFO L226 Difference]: Without dead ends: 8710 [2020-10-14 22:15:20,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-14 22:15:20,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8710 states. [2020-10-14 22:15:20,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8710 to 8681. [2020-10-14 22:15:20,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8681 states. [2020-10-14 22:15:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8681 states to 8681 states and 9968 transitions. [2020-10-14 22:15:20,538 INFO L78 Accepts]: Start accepts. Automaton has 8681 states and 9968 transitions. Word has length 766 [2020-10-14 22:15:20,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:15:20,539 INFO L479 AbstractCegarLoop]: Abstraction has 8681 states and 9968 transitions. [2020-10-14 22:15:20,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:15:20,540 INFO L276 IsEmpty]: Start isEmpty. Operand 8681 states and 9968 transitions. [2020-10-14 22:15:20,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2020-10-14 22:15:20,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:15:20,561 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:20,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:15:20,562 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:15:20,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:15:20,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1227576663, now seen corresponding path program 1 times [2020-10-14 22:15:20,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:15:20,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650920550] [2020-10-14 22:15:20,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:15:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:20,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:21,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:23,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:25,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:25,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 810 [2020-10-14 22:15:25,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:15:25,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 22:15:25,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:25,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:25,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:25,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 577 [2020-10-14 22:15:25,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-14 22:15:25,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:25,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:25,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:25,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:25,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:25,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:25,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:15:25,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:25,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:25,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:25,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:25,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:25,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:25,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:25,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:25,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:25,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:15:25,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:25,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 22:15:25,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:25,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:25,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:25,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:26,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:15:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:26,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:26,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:26,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:15:26,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:26,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:15:26,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:26,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:26,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:26,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:26,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-14 22:15:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:26,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:26,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:26,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 22:15:26,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:26,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 22:15:26,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:26,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:26,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:26,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:26,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 22:15:26,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:26,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2020-10-14 22:15:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:26,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:26,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:26,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 22:15:26,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:26,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 22:15:26,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:26,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:26,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:26,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:26,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 22:15:26,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 676 proven. 2 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2020-10-14 22:15:26,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650920550] [2020-10-14 22:15:26,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:15:26,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:15:26,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93293524] [2020-10-14 22:15:26,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:15:26,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:15:26,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:15:26,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:15:26,778 INFO L87 Difference]: Start difference. First operand 8681 states and 9968 transitions. Second operand 7 states. [2020-10-14 22:15:30,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:15:30,597 INFO L93 Difference]: Finished difference Result 17050 states and 19645 transitions. [2020-10-14 22:15:30,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:15:30,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 794 [2020-10-14 22:15:30,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:15:30,646 INFO L225 Difference]: With dead ends: 17050 [2020-10-14 22:15:30,647 INFO L226 Difference]: Without dead ends: 8646 [2020-10-14 22:15:30,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:15:30,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8646 states. [2020-10-14 22:15:30,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8646 to 8630. [2020-10-14 22:15:30,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8630 states. [2020-10-14 22:15:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8630 states to 8630 states and 9329 transitions. [2020-10-14 22:15:30,860 INFO L78 Accepts]: Start accepts. Automaton has 8630 states and 9329 transitions. Word has length 794 [2020-10-14 22:15:30,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:15:30,862 INFO L479 AbstractCegarLoop]: Abstraction has 8630 states and 9329 transitions. [2020-10-14 22:15:30,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:15:30,862 INFO L276 IsEmpty]: Start isEmpty. Operand 8630 states and 9329 transitions. [2020-10-14 22:15:30,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2020-10-14 22:15:30,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:15:30,884 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 22:15:30,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:15:30,885 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:15:30,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:15:30,885 INFO L82 PathProgramCache]: Analyzing trace with hash -2131457069, now seen corresponding path program 1 times [2020-10-14 22:15:30,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:15:30,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901880010] [2020-10-14 22:15:30,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:15:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:31,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:31,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:31,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:35,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:36,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:36,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 905 [2020-10-14 22:15:36,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:15:36,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-14 22:15:36,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:36,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 414 [2020-10-14 22:15:36,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 22:15:36,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:36,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:36,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:36,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:36,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:36,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:36,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:15:36,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:36,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:36,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:36,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:36,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:36,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:36,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:36,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:36,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:36,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:15:36,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 22:15:36,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:36,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:36,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:36,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:15:36,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:15:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:36,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:36,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:36,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 22:15:36,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:36,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 22:15:36,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:36,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:36,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:36,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:36,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 22:15:36,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:36,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-14 22:15:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:36,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:36,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:36,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:15:36,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:36,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 22:15:36,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:36,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:36,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 22:15:36,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:36,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-10-14 22:15:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:36,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:36,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:36,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 22:15:36,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:36,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 22:15:36,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:36,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-14 22:15:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:36,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2020-10-14 22:15:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:36,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:36,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:36,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 22:15:36,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:36,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 22:15:36,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:36,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 22:15:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:36,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:37,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 548 proven. 250 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2020-10-14 22:15:37,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901880010] [2020-10-14 22:15:37,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:15:37,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:15:37,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865795171] [2020-10-14 22:15:37,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:15:37,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:15:37,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:15:37,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:15:37,474 INFO L87 Difference]: Start difference. First operand 8630 states and 9329 transitions. Second operand 7 states. [2020-10-14 22:15:40,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:15:40,638 INFO L93 Difference]: Finished difference Result 18967 states and 20784 transitions. [2020-10-14 22:15:40,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:15:40,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 887 [2020-10-14 22:15:40,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:15:40,671 INFO L225 Difference]: With dead ends: 18967 [2020-10-14 22:15:40,671 INFO L226 Difference]: Without dead ends: 10680 [2020-10-14 22:15:40,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:15:40,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10680 states. [2020-10-14 22:15:40,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10680 to 10321. [2020-10-14 22:15:40,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10321 states. [2020-10-14 22:15:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10321 states to 10321 states and 11096 transitions. [2020-10-14 22:15:40,873 INFO L78 Accepts]: Start accepts. Automaton has 10321 states and 11096 transitions. Word has length 887 [2020-10-14 22:15:40,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:15:40,874 INFO L479 AbstractCegarLoop]: Abstraction has 10321 states and 11096 transitions. [2020-10-14 22:15:40,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:15:40,875 INFO L276 IsEmpty]: Start isEmpty. Operand 10321 states and 11096 transitions. [2020-10-14 22:15:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2020-10-14 22:15:40,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:15:40,902 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 22:15:40,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:15:40,903 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:15:40,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:15:40,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1290183909, now seen corresponding path program 1 times [2020-10-14 22:15:40,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:15:40,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149262412] [2020-10-14 22:15:40,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:15:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:41,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:41,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:41,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:43,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:46,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:46,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1036 [2020-10-14 22:15:46,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:15:46,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 22:15:46,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:46,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:46,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:15:46,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:15:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-14 22:15:46,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:46,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:46,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:46,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:46,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:15:46,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:46,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:46,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:46,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:46,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:15:46,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:46,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:46,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:46,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:46,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:46,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:15:46,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:15:46,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-14 22:15:46,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:46,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 22:15:46,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:46,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:15:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:46,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:46,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:46,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:15:46,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 22:15:46,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:46,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 22:15:46,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:46,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-14 22:15:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:46,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:46,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:46,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 22:15:46,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:46,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:15:46,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:46,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:46,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:46,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-14 22:15:46,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:46,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:47,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-10-14 22:15:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:47,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:47,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:47,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:15:47,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:47,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 22:15:47,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:47,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-14 22:15:47,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:47,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:48,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1524 backedges. 445 proven. 440 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2020-10-14 22:15:48,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149262412] [2020-10-14 22:15:48,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:15:48,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:15:48,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119746189] [2020-10-14 22:15:48,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:15:48,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:15:48,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:15:48,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:15:48,019 INFO L87 Difference]: Start difference. First operand 10321 states and 11096 transitions. Second operand 7 states. [2020-10-14 22:15:50,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:15:50,811 INFO L93 Difference]: Finished difference Result 20313 states and 21865 transitions. [2020-10-14 22:15:50,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:15:50,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1020 [2020-10-14 22:15:50,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:15:50,850 INFO L225 Difference]: With dead ends: 20313 [2020-10-14 22:15:50,851 INFO L226 Difference]: Without dead ends: 10337 [2020-10-14 22:15:50,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:15:50,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10337 states. [2020-10-14 22:15:51,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10337 to 10321. [2020-10-14 22:15:51,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10321 states. [2020-10-14 22:15:51,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10321 states to 10321 states and 11090 transitions. [2020-10-14 22:15:51,045 INFO L78 Accepts]: Start accepts. Automaton has 10321 states and 11090 transitions. Word has length 1020 [2020-10-14 22:15:51,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:15:51,046 INFO L479 AbstractCegarLoop]: Abstraction has 10321 states and 11090 transitions. [2020-10-14 22:15:51,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:15:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 10321 states and 11090 transitions. [2020-10-14 22:15:51,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2020-10-14 22:15:51,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:15:51,072 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:51,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:15:51,072 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:15:51,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:15:51,073 INFO L82 PathProgramCache]: Analyzing trace with hash -866407874, now seen corresponding path program 1 times [2020-10-14 22:15:51,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:15:51,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582452742] [2020-10-14 22:15:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:15:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:51,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:51,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:54,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:54,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:56,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:56,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1072 [2020-10-14 22:15:56,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:15:56,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 22:15:56,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:56,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 741 [2020-10-14 22:15:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-14 22:15:56,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:15:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:56,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:56,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:56,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:15:56,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:56,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:15:56,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:56,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:56,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:56,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:15:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:56,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:56,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:15:56,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:56,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 22:15:56,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:56,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:56,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:56,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:15:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:56,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:56,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:56,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 22:15:56,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:56,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:15:56,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:56,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:56,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:56,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-14 22:15:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:56,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:56,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:56,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:15:56,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:56,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:15:56,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:56,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:56,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:15:56,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:56,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:15:56,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:56,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-14 22:15:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:56,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:56,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:56,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 22:15:56,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 22:15:56,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:56,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:15:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:15:56,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 22:15:56,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:57,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-14 22:15:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:15:57,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:15:57,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:15:57,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:15:57,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:15:57,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-14 22:15:57,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:15:57,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:15:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:15:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:15:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 22:15:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:15:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1876 backedges. 973 proven. 2 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2020-10-14 22:15:58,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582452742] [2020-10-14 22:15:58,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:15:58,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:15:58,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81913696] [2020-10-14 22:15:58,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:15:58,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:15:58,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:15:58,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:15:58,336 INFO L87 Difference]: Start difference. First operand 10321 states and 11090 transitions. Second operand 8 states. [2020-10-14 22:16:03,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:16:03,599 INFO L93 Difference]: Finished difference Result 23360 states and 25092 transitions. [2020-10-14 22:16:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:16:03,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1054 [2020-10-14 22:16:03,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:16:03,635 INFO L225 Difference]: With dead ends: 23360 [2020-10-14 22:16:03,635 INFO L226 Difference]: Without dead ends: 13384 [2020-10-14 22:16:03,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:16:03,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13384 states. [2020-10-14 22:16:03,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13384 to 12018. [2020-10-14 22:16:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12018 states. [2020-10-14 22:16:03,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12018 states to 12018 states and 12880 transitions. [2020-10-14 22:16:03,859 INFO L78 Accepts]: Start accepts. Automaton has 12018 states and 12880 transitions. Word has length 1054 [2020-10-14 22:16:03,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:16:03,860 INFO L479 AbstractCegarLoop]: Abstraction has 12018 states and 12880 transitions. [2020-10-14 22:16:03,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:16:03,861 INFO L276 IsEmpty]: Start isEmpty. Operand 12018 states and 12880 transitions. [2020-10-14 22:16:03,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1136 [2020-10-14 22:16:03,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:16:03,890 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:16:03,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:16:03,890 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:16:03,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:16:03,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1586492393, now seen corresponding path program 1 times [2020-10-14 22:16:03,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:16:03,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84989451] [2020-10-14 22:16:03,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:16:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:04,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:04,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:09,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:09,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1153 [2020-10-14 22:16:09,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:16:09,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 22:16:09,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:09,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:16:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 544 [2020-10-14 22:16:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-14 22:16:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:09,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:16:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:09,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:09,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:09,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:16:09,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:09,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:16:09,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:09,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:09,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:09,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:09,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:16:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:09,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:09,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:09,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:16:09,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:09,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 22:16:09,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:09,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:09,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:09,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:16:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:09,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:09,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:09,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 22:16:09,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:09,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:16:09,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:09,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:09,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:09,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:09,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-14 22:16:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:09,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:09,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:09,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:16:09,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:16:09,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:09,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:16:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 22:16:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:09,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-14 22:16:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:09,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:09,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:09,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 22:16:09,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:09,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-14 22:16:09,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:09,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:16:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:16:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-14 22:16:09,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:10,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 814 [2020-10-14 22:16:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:10,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:10,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:10,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:16:10,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:10,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 22:16:10,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:10,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:10,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:10,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-14 22:16:10,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:10,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 788 proven. 272 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2020-10-14 22:16:10,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84989451] [2020-10-14 22:16:10,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:16:10,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:16:10,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197152424] [2020-10-14 22:16:10,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:16:10,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:16:10,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:16:10,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:16:10,874 INFO L87 Difference]: Start difference. First operand 12018 states and 12880 transitions. Second operand 7 states. [2020-10-14 22:16:14,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:16:14,879 INFO L93 Difference]: Finished difference Result 29140 states and 31553 transitions. [2020-10-14 22:16:14,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:16:14,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1135 [2020-10-14 22:16:14,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:16:14,930 INFO L225 Difference]: With dead ends: 29140 [2020-10-14 22:16:14,930 INFO L226 Difference]: Without dead ends: 17467 [2020-10-14 22:16:14,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:16:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17467 states. [2020-10-14 22:16:15,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17467 to 16785. [2020-10-14 22:16:15,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16785 states. [2020-10-14 22:16:15,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16785 states to 16785 states and 18161 transitions. [2020-10-14 22:16:15,213 INFO L78 Accepts]: Start accepts. Automaton has 16785 states and 18161 transitions. Word has length 1135 [2020-10-14 22:16:15,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:16:15,215 INFO L479 AbstractCegarLoop]: Abstraction has 16785 states and 18161 transitions. [2020-10-14 22:16:15,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:16:15,215 INFO L276 IsEmpty]: Start isEmpty. Operand 16785 states and 18161 transitions. [2020-10-14 22:16:15,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1206 [2020-10-14 22:16:15,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:16:15,258 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:16:15,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:16:15,259 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:16:15,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:16:15,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1069486038, now seen corresponding path program 1 times [2020-10-14 22:16:15,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:16:15,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192969041] [2020-10-14 22:16:15,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:16:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:15,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:16,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:16,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:20,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:20,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1225 [2020-10-14 22:16:20,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:16:20,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-14 22:16:20,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:20,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:16:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 616 [2020-10-14 22:16:20,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-14 22:16:20,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:20,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:16:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:20,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:20,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:20,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:16:20,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:20,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:16:20,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:20,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:20,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:20,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:20,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:16:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:20,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:20,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:16:20,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:20,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 22:16:20,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:20,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:20,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:20,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:20,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:16:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:20,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:20,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:20,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 22:16:20,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:20,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:16:20,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:20,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:20,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:20,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:20,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:20,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:21,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-14 22:16:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:21,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:21,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:21,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:16:21,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:21,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 22:16:21,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:21,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:21,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:21,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-14 22:16:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:21,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:21,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:21,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:16:21,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:21,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 22:16:21,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:21,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:21,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:16:21,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:21,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 22:16:21,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:21,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-14 22:16:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:21,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:21,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:21,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 22:16:21,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:21,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 22:16:21,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:21,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:21,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:16:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:16:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-14 22:16:21,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:21,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 884 [2020-10-14 22:16:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:21,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:21,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:21,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:16:21,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:21,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 22:16:21,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:21,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-14 22:16:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:21,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:22,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2397 backedges. 913 proven. 272 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2020-10-14 22:16:22,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192969041] [2020-10-14 22:16:22,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:16:22,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:16:22,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821737107] [2020-10-14 22:16:22,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:16:22,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:16:22,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:16:22,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:16:22,418 INFO L87 Difference]: Start difference. First operand 16785 states and 18161 transitions. Second operand 7 states. [2020-10-14 22:16:26,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:16:26,863 INFO L93 Difference]: Finished difference Result 36948 states and 40290 transitions. [2020-10-14 22:16:26,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:16:26,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1205 [2020-10-14 22:16:26,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:16:26,917 INFO L225 Difference]: With dead ends: 36948 [2020-10-14 22:16:26,918 INFO L226 Difference]: Without dead ends: 20508 [2020-10-14 22:16:26,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 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 22:16:26,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20508 states. [2020-10-14 22:16:27,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20508 to 19160. [2020-10-14 22:16:27,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19160 states. [2020-10-14 22:16:27,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19160 states to 19160 states and 20639 transitions. [2020-10-14 22:16:27,314 INFO L78 Accepts]: Start accepts. Automaton has 19160 states and 20639 transitions. Word has length 1205 [2020-10-14 22:16:27,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:16:27,315 INFO L479 AbstractCegarLoop]: Abstraction has 19160 states and 20639 transitions. [2020-10-14 22:16:27,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:16:27,315 INFO L276 IsEmpty]: Start isEmpty. Operand 19160 states and 20639 transitions. [2020-10-14 22:16:27,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1256 [2020-10-14 22:16:27,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:16:27,356 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 22:16:27,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 22:16:27,356 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:16:27,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:16:27,357 INFO L82 PathProgramCache]: Analyzing trace with hash 687185241, now seen corresponding path program 1 times [2020-10-14 22:16:27,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:16:27,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181104939] [2020-10-14 22:16:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:16:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:27,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:27,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:28,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:32,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:32,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1273 [2020-10-14 22:16:32,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:16:32,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 22:16:32,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:32,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:16:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 942 [2020-10-14 22:16:32,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 330 [2020-10-14 22:16:32,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:32,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:16:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:32,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:32,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:32,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:16:32,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:32,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:16:32,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:32,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:32,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:32,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:16:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:32,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:32,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:32,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:16:32,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:32,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 22:16:32,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:32,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:32,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:32,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:32,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:32,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:32,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:16:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:32,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:32,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:32,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 22:16:32,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:32,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:16:32,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:32,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:32,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:32,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:32,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-14 22:16:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:32,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:33,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:33,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:16:33,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:33,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 22:16:33,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:33,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:33,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:33,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:33,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:33,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:33,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2020-10-14 22:16:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:33,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:33,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:33,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 22:16:33,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:33,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 22:16:33,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:33,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:33,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:16:33,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:33,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-14 22:16:33,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:33,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 934 [2020-10-14 22:16:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:33,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:33,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:33,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:33,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 22:16:33,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:16:33,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-14 22:16:33,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:33,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:16:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:33,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-14 22:16:33,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 267 proven. 5 refuted. 0 times theorem prover too weak. 2109 trivial. 0 not checked. [2020-10-14 22:16:34,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181104939] [2020-10-14 22:16:34,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:16:34,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:16:34,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103655054] [2020-10-14 22:16:34,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:16:34,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:16:34,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:16:34,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:16:34,413 INFO L87 Difference]: Start difference. First operand 19160 states and 20639 transitions. Second operand 6 states. [2020-10-14 22:16:37,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:16:37,707 INFO L93 Difference]: Finished difference Result 41682 states and 45131 transitions. [2020-10-14 22:16:37,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:16:37,708 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1255 [2020-10-14 22:16:37,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:16:37,756 INFO L225 Difference]: With dead ends: 41682 [2020-10-14 22:16:37,756 INFO L226 Difference]: Without dead ends: 22867 [2020-10-14 22:16:37,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:16:37,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22867 states. [2020-10-14 22:16:38,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22867 to 20845. [2020-10-14 22:16:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20845 states. [2020-10-14 22:16:38,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20845 states to 20845 states and 22578 transitions. [2020-10-14 22:16:38,073 INFO L78 Accepts]: Start accepts. Automaton has 20845 states and 22578 transitions. Word has length 1255 [2020-10-14 22:16:38,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:16:38,075 INFO L479 AbstractCegarLoop]: Abstraction has 20845 states and 22578 transitions. [2020-10-14 22:16:38,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:16:38,075 INFO L276 IsEmpty]: Start isEmpty. Operand 20845 states and 22578 transitions. [2020-10-14 22:16:38,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1479 [2020-10-14 22:16:38,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:16:38,117 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 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 22:16:38,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 22:16:38,118 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:16:38,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:16:38,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1472003496, now seen corresponding path program 1 times [2020-10-14 22:16:38,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:16:38,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901892117] [2020-10-14 22:16:38,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:16:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:38,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:38,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:38,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:39,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:41,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:43,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:43,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1504 [2020-10-14 22:16:43,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:16:43,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 22:16:43,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:43,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:43,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:16:43,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 732 [2020-10-14 22:16:43,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-14 22:16:43,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:43,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:16:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:43,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:43,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:43,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:16:43,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:43,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:16:43,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:43,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:43,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:16:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:43,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:43,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:43,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:16:43,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:43,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 22:16:43,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:43,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:43,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:43,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:16:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:43,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:43,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:43,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 22:16:43,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:43,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 22:16:43,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:43,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:43,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:43,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-14 22:16:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:43,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:43,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:43,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:16:43,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:43,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 22:16:43,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:43,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:43,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:43,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:43,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-14 22:16:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:43,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:43,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:43,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:16:43,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:43,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 22:16:43,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:43,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:43,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:43,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:43,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:43,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:43,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-14 22:16:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:43,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:43,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:16:43,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:43,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 22:16:43,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:43,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:43,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:16:43,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:43,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 22:16:43,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:43,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2020-10-14 22:16:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:43,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:44,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:44,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 22:16:44,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:44,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 22:16:44,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:44,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:16:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:16:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-14 22:16:44,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:44,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 972 [2020-10-14 22:16:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:44,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:44,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:44,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 22:16:44,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:44,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 22:16:44,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:44,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:44,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:44,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-14 22:16:44,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:44,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:44,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1082 [2020-10-14 22:16:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:44,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:44,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:44,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 22:16:44,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:44,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 22:16:44,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:44,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 22:16:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:44,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:44,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1257 [2020-10-14 22:16:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:44,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:44,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:44,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 22:16:44,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:44,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:16:44,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:44,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-14 22:16:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:44,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4854 backedges. 1220 proven. 451 refuted. 0 times theorem prover too weak. 3183 trivial. 0 not checked. [2020-10-14 22:16:45,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901892117] [2020-10-14 22:16:45,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:16:45,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:16:45,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790372648] [2020-10-14 22:16:45,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:16:45,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:16:45,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:16:45,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:16:45,991 INFO L87 Difference]: Start difference. First operand 20845 states and 22578 transitions. Second operand 7 states. [2020-10-14 22:16:49,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:16:49,595 INFO L93 Difference]: Finished difference Result 41684 states and 45152 transitions. [2020-10-14 22:16:49,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:16:49,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1478 [2020-10-14 22:16:49,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:16:49,642 INFO L225 Difference]: With dead ends: 41684 [2020-10-14 22:16:49,642 INFO L226 Difference]: Without dead ends: 21184 [2020-10-14 22:16:49,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:16:49,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21184 states. [2020-10-14 22:16:49,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21184 to 21184. [2020-10-14 22:16:49,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21184 states. [2020-10-14 22:16:49,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21184 states to 21184 states and 22920 transitions. [2020-10-14 22:16:49,983 INFO L78 Accepts]: Start accepts. Automaton has 21184 states and 22920 transitions. Word has length 1478 [2020-10-14 22:16:49,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:16:49,984 INFO L479 AbstractCegarLoop]: Abstraction has 21184 states and 22920 transitions. [2020-10-14 22:16:49,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:16:49,985 INFO L276 IsEmpty]: Start isEmpty. Operand 21184 states and 22920 transitions. [2020-10-14 22:16:50,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1556 [2020-10-14 22:16:50,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:16:50,030 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:50,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 22:16:50,030 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:16:50,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:16:50,031 INFO L82 PathProgramCache]: Analyzing trace with hash -617559601, now seen corresponding path program 1 times [2020-10-14 22:16:50,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:16:50,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763589239] [2020-10-14 22:16:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:16:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:50,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:50,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:50,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:51,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:55,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:55,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1583 [2020-10-14 22:16:55,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:16:55,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-14 22:16:55,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:55,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:55,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:16:55,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-14 22:16:55,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-14 22:16:55,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:55,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:16:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:55,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:55,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:55,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:16:55,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:55,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:16:55,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:55,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:55,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:55,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:55,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:55,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:55,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:16:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:55,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:55,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:55,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:16:55,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:55,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 22:16:55,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:55,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:16:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-14 22:16:55,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:55,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:16:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:55,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:55,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:55,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 22:16:55,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:55,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 22:16:55,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:55,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:16:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:16:55,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 22:16:55,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:55,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-14 22:16:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:55,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:55,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:55,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:16:55,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:55,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 22:16:55,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:55,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-14 22:16:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:55,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:55,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-14 22:16:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:55,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:55,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:55,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:16:55,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:55,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 22:16:55,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:55,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 22:16:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:55,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:55,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-14 22:16:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:56,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:56,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:56,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:16:56,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:56,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 22:16:56,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:56,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 22:16:56,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:56,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:56,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2020-10-14 22:16:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:56,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:56,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:56,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-14 22:16:56,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:56,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 22:16:56,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:56,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:56,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:56,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 327 [2020-10-14 22:16:56,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:56,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:56,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:16:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:56,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:56,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:56,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 22:16:56,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:56,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:16:56,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:56,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:56,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:56,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:16:56,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:56,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:56,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1049 [2020-10-14 22:16:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:56,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:56,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:56,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 22:16:56,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 22:16:56,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:56,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-14 22:16:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:56,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:56,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1159 [2020-10-14 22:16:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:56,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:56,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:56,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 22:16:56,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:56,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:16:56,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:56,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:56,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:56,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 22:16:56,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:56,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:56,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1334 [2020-10-14 22:16:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:16:56,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:16:56,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:16:56,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 22:16:56,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:16:56,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 22:16:56,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:16:56,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:16:56,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:16:56,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-14 22:16:56,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:16:56,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:16:58,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4854 backedges. 628 proven. 890 refuted. 0 times theorem prover too weak. 3336 trivial. 0 not checked. [2020-10-14 22:16:58,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763589239] [2020-10-14 22:16:58,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:16:58,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:16:58,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902813277] [2020-10-14 22:16:58,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:16:58,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:16:58,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:16:58,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:16:58,400 INFO L87 Difference]: Start difference. First operand 21184 states and 22920 transitions. Second operand 7 states. [2020-10-14 22:17:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:17:02,259 INFO L93 Difference]: Finished difference Result 42705 states and 46246 transitions. [2020-10-14 22:17:02,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:17:02,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1555 [2020-10-14 22:17:02,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:17:02,311 INFO L225 Difference]: With dead ends: 42705 [2020-10-14 22:17:02,311 INFO L226 Difference]: Without dead ends: 21866 [2020-10-14 22:17:02,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:17:02,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21866 states. [2020-10-14 22:17:02,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21866 to 20847. [2020-10-14 22:17:02,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20847 states. [2020-10-14 22:17:02,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20847 states to 20847 states and 22551 transitions. [2020-10-14 22:17:02,669 INFO L78 Accepts]: Start accepts. Automaton has 20847 states and 22551 transitions. Word has length 1555 [2020-10-14 22:17:02,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:17:02,670 INFO L479 AbstractCegarLoop]: Abstraction has 20847 states and 22551 transitions. [2020-10-14 22:17:02,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:17:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 20847 states and 22551 transitions. [2020-10-14 22:17:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1617 [2020-10-14 22:17:02,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:17:02,714 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:02,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 22:17:02,714 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:17:02,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:17:02,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1657917992, now seen corresponding path program 1 times [2020-10-14 22:17:02,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:17:02,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427725133] [2020-10-14 22:17:02,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:17:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:03,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:03,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:03,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:03,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:05,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:08,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:08,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1644 [2020-10-14 22:17:08,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:17:08,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-14 22:17:08,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:08,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:17:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1236 [2020-10-14 22:17:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-14 22:17:08,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:08,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:17:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:08,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:08,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:08,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:17:08,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:08,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:17:08,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:08,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:08,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:08,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:17:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:08,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:08,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:08,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:17:08,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:08,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 22:17:08,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:08,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:08,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:08,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:08,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:08,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:08,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:17:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:08,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:08,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:08,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 22:17:08,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:08,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:17:08,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:08,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:08,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:08,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 22:17:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:08,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:08,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:08,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:17:08,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 22:17:08,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:08,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:08,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:08,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-14 22:17:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:08,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:08,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:08,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:17:08,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:08,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:17:08,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:08,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:08,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:08,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:08,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:08,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:08,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-14 22:17:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:08,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:08,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:08,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 22:17:08,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:08,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 22:17:08,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:08,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:08,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:08,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 783 [2020-10-14 22:17:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:08,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:08,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:08,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-14 22:17:08,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:08,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:17:08,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:08,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:08,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:08,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:08,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:08,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:17:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:08,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:08,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:08,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 22:17:08,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:08,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 22:17:08,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:08,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:08,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:08,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:08,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:08,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:08,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1110 [2020-10-14 22:17:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:08,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:08,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:08,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 22:17:08,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:08,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:17:08,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:08,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:08,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:17:08,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:08,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:17:08,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:08,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1220 [2020-10-14 22:17:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:08,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:09,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:09,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 22:17:09,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:09,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 22:17:09,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:09,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:17:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:17:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 22:17:09,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:09,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1395 [2020-10-14 22:17:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:09,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:09,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:09,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 22:17:09,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:09,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 22:17:09,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:09,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-14 22:17:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:09,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:17:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 5000 backedges. 1426 proven. 172 refuted. 0 times theorem prover too weak. 3402 trivial. 0 not checked. [2020-10-14 22:17:10,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427725133] [2020-10-14 22:17:10,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:17:10,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:17:10,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310043547] [2020-10-14 22:17:10,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:17:10,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:17:10,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:17:10,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:17:10,592 INFO L87 Difference]: Start difference. First operand 20847 states and 22551 transitions. Second operand 7 states. [2020-10-14 22:17:14,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:17:14,268 INFO L93 Difference]: Finished difference Result 41719 states and 45172 transitions. [2020-10-14 22:17:14,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:17:14,269 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1616 [2020-10-14 22:17:14,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:17:14,320 INFO L225 Difference]: With dead ends: 41719 [2020-10-14 22:17:14,321 INFO L226 Difference]: Without dead ends: 20868 [2020-10-14 22:17:14,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:17:14,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20868 states. [2020-10-14 22:17:14,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20868 to 19496. [2020-10-14 22:17:14,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19496 states. [2020-10-14 22:17:14,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19496 states to 19496 states and 20694 transitions. [2020-10-14 22:17:14,701 INFO L78 Accepts]: Start accepts. Automaton has 19496 states and 20694 transitions. Word has length 1616 [2020-10-14 22:17:14,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:17:14,702 INFO L479 AbstractCegarLoop]: Abstraction has 19496 states and 20694 transitions. [2020-10-14 22:17:14,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:17:14,702 INFO L276 IsEmpty]: Start isEmpty. Operand 19496 states and 20694 transitions. [2020-10-14 22:17:14,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1812 [2020-10-14 22:17:14,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:17:14,751 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 22:17:14,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 22:17:14,751 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:17:14,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:17:14,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1330791238, now seen corresponding path program 1 times [2020-10-14 22:17:14,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:17:14,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753331311] [2020-10-14 22:17:14,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:17:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:15,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:15,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:15,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:16,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:20,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:20,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1839 [2020-10-14 22:17:20,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:17:20,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5182 [2020-10-14 22:17:20,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:20,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:20,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:17:20,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-14 22:17:20,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-14 22:17:20,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:20,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:17:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:20,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:20,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:20,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:17:20,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:20,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:17:20,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:20,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:20,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:20,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:20,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:20,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:20,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:17:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:20,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:20,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:20,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:17:20,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:20,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 22:17:20,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:20,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:20,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:20,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:20,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:20,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:20,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:17:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:20,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:20,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:20,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:17:20,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:20,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 22:17:20,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:20,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:17:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 22:17:20,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:20,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 22:17:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:20,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:20,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:20,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 22:17:20,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:20,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 22:17:20,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:20,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:17:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:17:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-14 22:17:21,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:17:21,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-14 22:17:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:21,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:21,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:21,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 22:17:21,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:21,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 22:17:21,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:21,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:21,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:21,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-14 22:17:21,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:21,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:17:21,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-10-14 22:17:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:21,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:21,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:21,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:17:21,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:21,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 22:17:21,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:21,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:21,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:21,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-14 22:17:21,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:21,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:21,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 871 [2020-10-14 22:17:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:21,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:21,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:21,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 22:17:21,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:21,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 22:17:21,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:21,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:21,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:21,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 22:17:21,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:21,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:17:21,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1013 [2020-10-14 22:17:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:21,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:21,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:21,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 22:17:21,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:21,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 22:17:21,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:21,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:21,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:21,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-14 22:17:21,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:21,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:17:21,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1123 [2020-10-14 22:17:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:21,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:21,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:21,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 22:17:21,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:21,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 22:17:21,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:21,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:21,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:21,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-14 22:17:21,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:21,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:17:21,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1338 [2020-10-14 22:17:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:22,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:22,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:22,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 22:17:22,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:22,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 22:17:22,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:22,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:22,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:22,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-14 22:17:22,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:22,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:17:22,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1590 [2020-10-14 22:17:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:22,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:22,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:22,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 22:17:22,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:22,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 22:17:22,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:22,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-14 22:17:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:22,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6915 backedges. 864 proven. 1137 refuted. 0 times theorem prover too weak. 4914 trivial. 0 not checked. [2020-10-14 22:17:24,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753331311] [2020-10-14 22:17:24,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:17:24,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:17:24,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288926073] [2020-10-14 22:17:24,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:17:24,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:17:24,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:17:24,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:17:24,203 INFO L87 Difference]: Start difference. First operand 19496 states and 20694 transitions. Second operand 7 states. [2020-10-14 22:17:28,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:17:28,018 INFO L93 Difference]: Finished difference Result 42378 states and 45171 transitions. [2020-10-14 22:17:28,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:17:28,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1811 [2020-10-14 22:17:28,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:17:28,083 INFO L225 Difference]: With dead ends: 42378 [2020-10-14 22:17:28,083 INFO L226 Difference]: Without dead ends: 23227 [2020-10-14 22:17:28,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:17:28,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23227 states. [2020-10-14 22:17:28,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23227 to 22212. [2020-10-14 22:17:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22212 states. [2020-10-14 22:17:28,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22212 states to 22212 states and 23712 transitions. [2020-10-14 22:17:28,458 INFO L78 Accepts]: Start accepts. Automaton has 22212 states and 23712 transitions. Word has length 1811 [2020-10-14 22:17:28,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:17:28,459 INFO L479 AbstractCegarLoop]: Abstraction has 22212 states and 23712 transitions. [2020-10-14 22:17:28,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:17:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 22212 states and 23712 transitions. [2020-10-14 22:17:28,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1869 [2020-10-14 22:17:28,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:17:28,509 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 22:17:28,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 22:17:28,510 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:17:28,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:17:28,511 INFO L82 PathProgramCache]: Analyzing trace with hash 310449543, now seen corresponding path program 1 times [2020-10-14 22:17:28,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:17:28,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008876357] [2020-10-14 22:17:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:17:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:29,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:29,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:30,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:34,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:34,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1896 [2020-10-14 22:17:34,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:17:34,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-10-14 22:17:34,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:34,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:17:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1194 [2020-10-14 22:17:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-14 22:17:34,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:34,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:17:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:34,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:34,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:34,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:17:34,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:17:34,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:34,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:34,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:17:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:34,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:34,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:34,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:17:34,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:34,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 22:17:34,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:34,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:34,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:34,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:17:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:34,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:34,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:34,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:17:34,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:34,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 22:17:34,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:34,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:34,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:34,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:34,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:17:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:34,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:34,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:34,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 22:17:34,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:34,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 22:17:34,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:34,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:34,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:34,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:34,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:34,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:34,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-14 22:17:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:34,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:34,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:34,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 22:17:34,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:34,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:17:34,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:34,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:34,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:34,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:34,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:34,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:34,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-14 22:17:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:34,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:34,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:34,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 22:17:34,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 22:17:34,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:34,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:34,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 928 [2020-10-14 22:17:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:34,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:34,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:34,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 22:17:34,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:17:34,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:34,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:34,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2020-10-14 22:17:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:34,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:34,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:34,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 22:17:34,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:34,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 22:17:34,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:34,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:17:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:17:34,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 22:17:34,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:17:34,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1180 [2020-10-14 22:17:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:34,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:35,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:35,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 22:17:35,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:35,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-14 22:17:35,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:35,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:17:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:17:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-14 22:17:35,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:17:35,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1395 [2020-10-14 22:17:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:35,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:35,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:35,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 22:17:35,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:35,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 22:17:35,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:35,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:35,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:35,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-14 22:17:35,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:35,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:17:35,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1647 [2020-10-14 22:17:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:17:35,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:17:35,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:17:35,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 22:17:35,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:17:35,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 22:17:35,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:17:35,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:17:35,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:17:35,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 171 [2020-10-14 22:17:35,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:17:35,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:17:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 7349 backedges. 1691 proven. 384 refuted. 0 times theorem prover too weak. 5274 trivial. 0 not checked. [2020-10-14 22:17:38,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008876357] [2020-10-14 22:17:38,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:17:38,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:17:38,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166169927] [2020-10-14 22:17:38,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:17:38,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:17:38,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:17:38,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:17:38,062 INFO L87 Difference]: Start difference. First operand 22212 states and 23712 transitions. Second operand 7 states.