/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem18_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:11:43,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:11:43,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:11:43,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:11:43,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:11:43,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:11:43,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:11:43,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:11:43,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:11:43,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:11:43,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:11:43,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:11:43,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:11:43,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:11:43,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:11:43,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:11:43,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:11:43,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:11:43,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:11:43,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:11:43,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:11:43,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:11:43,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:11:43,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:11:43,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:11:43,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:11:43,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:11:43,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:11:43,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:11:43,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:11:43,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:11:43,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:11:43,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:11:43,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:11:43,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:11:43,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:11:43,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:11:43,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:11:43,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:11:43,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:11:43,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:11:43,920 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 04:11:43,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:11:43,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:11:43,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:11:43,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:11:43,964 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:11:43,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:11:43,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:11:43,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:11:43,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:11:43,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:11:43,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:11:43,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:11:43,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:11:43,967 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:11:43,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:11:43,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:11:43,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:11:43,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:11:43,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:11:43,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:11:43,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:11:43,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:11:43,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:11:43,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:11:43,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:11:43,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:11:43,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:11:43,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:11:43,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:11:43,970 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:11:44,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:11:44,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:11:44,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:11:44,302 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:11:44,303 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:11:44,303 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label05.c [2020-10-14 04:11:44,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b7217b11/6077e7f33aca4313a2b7e87bd70691a0/FLAG395e6abf5 [2020-10-14 04:11:45,077 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:11:45,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label05.c [2020-10-14 04:11:45,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b7217b11/6077e7f33aca4313a2b7e87bd70691a0/FLAG395e6abf5 [2020-10-14 04:11:45,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b7217b11/6077e7f33aca4313a2b7e87bd70691a0 [2020-10-14 04:11:45,189 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:11:45,191 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:11:45,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:11:45,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:11:45,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:11:45,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:11:45" (1/1) ... [2020-10-14 04:11:45,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0865a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:11:45, skipping insertion in model container [2020-10-14 04:11:45,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:11:45" (1/1) ... [2020-10-14 04:11:45,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:11:45,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:11:46,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:11:46,536 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:11:47,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:11:47,123 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:11:47,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:11:47 WrapperNode [2020-10-14 04:11:47,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:11:47,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:11:47,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:11:47,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:11:47,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:11:47" (1/1) ... [2020-10-14 04:11:47,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:11:47" (1/1) ... [2020-10-14 04:11:47,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:11:47" (1/1) ... [2020-10-14 04:11:47,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:11:47" (1/1) ... [2020-10-14 04:11:47,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:11:47" (1/1) ... [2020-10-14 04:11:47,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:11:47" (1/1) ... [2020-10-14 04:11:47,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:11:47" (1/1) ... [2020-10-14 04:11:47,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:11:47,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:11:47,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:11:47,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:11:47,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:11:47" (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 04:11:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:11:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:11:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:11:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:11:47,532 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:11:47,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:11:47,532 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:11:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:11:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:11:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:11:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:11:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:11:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:11:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:11:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:11:53,808 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:11:53,809 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:11:53,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:11:53 BoogieIcfgContainer [2020-10-14 04:11:53,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:11:53,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:11:53,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:11:53,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:11:53,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:11:45" (1/3) ... [2020-10-14 04:11:53,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ce29b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:11:53, skipping insertion in model container [2020-10-14 04:11:53,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:11:47" (2/3) ... [2020-10-14 04:11:53,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ce29b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:11:53, skipping insertion in model container [2020-10-14 04:11:53,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:11:53" (3/3) ... [2020-10-14 04:11:53,844 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label05.c [2020-10-14 04:11:53,863 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:11:53,874 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:11:53,891 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:11:53,923 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:11:53,924 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:11:53,924 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:11:53,924 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:11:53,924 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:11:53,924 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:11:53,924 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:11:53,924 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:11:53,963 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:11:53,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:11:53,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:11:53,974 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] [2020-10-14 04:11:53,975 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:11:53,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:11:53,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1899410001, now seen corresponding path program 1 times [2020-10-14 04:11:53,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:11:53,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882902501] [2020-10-14 04:11:53,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:11:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:54,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:54,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:11:54,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:54,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-14 04:11:54,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:54,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:54,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:11:54,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:11:54,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:11:54,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:11:54,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:11:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:54,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:54,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:54,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:11:54,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:54,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:11:54,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:54,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:54,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:11:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:11:54,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:54,795 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 04:11:54,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882902501] [2020-10-14 04:11:54,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:11:54,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:11:54,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802009347] [2020-10-14 04:11:54,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:11:54,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:11:54,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:11:54,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:11:54,828 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:12:02,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:12:02,846 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 04:12:02,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:12:02,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-14 04:12:02,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:12:02,879 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 04:12:02,879 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:12:02,893 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 04:12:02,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:12:03,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 04:12:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 04:12:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-14 04:12:03,060 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 44 [2020-10-14 04:12:03,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:12:03,061 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-14 04:12:03,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:12:03,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-14 04:12:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 04:12:03,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:12:03,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:03,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:12:03,068 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:12:03,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:12:03,069 INFO L82 PathProgramCache]: Analyzing trace with hash 171152236, now seen corresponding path program 1 times [2020-10-14 04:12:03,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:12:03,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646595882] [2020-10-14 04:12:03,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:12:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:03,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:03,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:04,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:04,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 04:12:04,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:12:04,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-10-14 04:12:04,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:04,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:04,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:12:04,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 04:12:04,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:12:04,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:12:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:04,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:04,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:04,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:12:04,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:04,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:12:04,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:04,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:04,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:04,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:04,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:04,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:12:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:04,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:04,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:04,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:12:04,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:04,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 04:12:04,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:04,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:12:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:12:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:12:04,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646595882] [2020-10-14 04:12:04,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:12:04,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:12:04,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849838582] [2020-10-14 04:12:04,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:12:04,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:12:04,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:12:04,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:12:04,323 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 5 states. [2020-10-14 04:12:15,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:12:15,091 INFO L93 Difference]: Finished difference Result 4276 states and 6734 transitions. [2020-10-14 04:12:15,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:12:15,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-14 04:12:15,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:12:15,109 INFO L225 Difference]: With dead ends: 4276 [2020-10-14 04:12:15,109 INFO L226 Difference]: Without dead ends: 2857 [2020-10-14 04:12:15,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:12:15,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-14 04:12:15,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2853. [2020-10-14 04:12:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2020-10-14 04:12:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4026 transitions. [2020-10-14 04:12:15,200 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4026 transitions. Word has length 114 [2020-10-14 04:12:15,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:12:15,201 INFO L479 AbstractCegarLoop]: Abstraction has 2853 states and 4026 transitions. [2020-10-14 04:12:15,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:12:15,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4026 transitions. [2020-10-14 04:12:15,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 04:12:15,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:12:15,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:15,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:12:15,206 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:12:15,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:12:15,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1546759260, now seen corresponding path program 1 times [2020-10-14 04:12:15,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:12:15,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075986725] [2020-10-14 04:12:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:12:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:15,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:15,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:15,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:15,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 04:12:15,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:12:15,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-10-14 04:12:15,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:15,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:12:15,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 04:12:15,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:15,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:12:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:15,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:15,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:12:15,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:15,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:12:15,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:15,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:15,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:15,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:12:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:15,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:16,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:16,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:12:16,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 04:12:16,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:16,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:12:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:12:16,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:16,069 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:12:16,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075986725] [2020-10-14 04:12:16,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:12:16,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:12:16,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312163274] [2020-10-14 04:12:16,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:12:16,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:12:16,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:12:16,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:12:16,072 INFO L87 Difference]: Start difference. First operand 2853 states and 4026 transitions. Second operand 5 states. [2020-10-14 04:12:24,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:12:24,486 INFO L93 Difference]: Finished difference Result 8547 states and 12183 transitions. [2020-10-14 04:12:24,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:12:24,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-14 04:12:24,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:12:24,602 INFO L225 Difference]: With dead ends: 8547 [2020-10-14 04:12:24,602 INFO L226 Difference]: Without dead ends: 5700 [2020-10-14 04:12:24,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:12:24,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2020-10-14 04:12:24,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5696. [2020-10-14 04:12:24,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5696 states. [2020-10-14 04:12:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 7348 transitions. [2020-10-14 04:12:24,756 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 7348 transitions. Word has length 118 [2020-10-14 04:12:24,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:12:24,760 INFO L479 AbstractCegarLoop]: Abstraction has 5696 states and 7348 transitions. [2020-10-14 04:12:24,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:12:24,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 7348 transitions. [2020-10-14 04:12:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 04:12:24,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:12:24,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:24,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:12:24,773 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:12:24,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:12:24,774 INFO L82 PathProgramCache]: Analyzing trace with hash -360337304, now seen corresponding path program 1 times [2020-10-14 04:12:24,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:12:24,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853225116] [2020-10-14 04:12:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:12:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:24,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:24,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:25,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:25,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:25,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 04:12:25,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:12:25,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1158 [2020-10-14 04:12:25,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:25,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:25,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:25,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:12:25,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 04:12:25,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:26,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:12:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:26,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:26,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:12:26,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:26,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:12:26,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:26,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:26,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:26,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:26,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:26,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:26,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:12:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:26,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:26,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:26,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:12:26,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:26,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:12:26,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:26,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:12:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:26,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:12:26,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:12:26,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853225116] [2020-10-14 04:12:26,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:12:26,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:12:26,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659430466] [2020-10-14 04:12:26,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:12:26,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:12:26,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:12:26,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:12:26,217 INFO L87 Difference]: Start difference. First operand 5696 states and 7348 transitions. Second operand 5 states. [2020-10-14 04:12:34,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:12:34,984 INFO L93 Difference]: Finished difference Result 14227 states and 18961 transitions. [2020-10-14 04:12:34,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:12:34,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-14 04:12:34,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:12:35,027 INFO L225 Difference]: With dead ends: 14227 [2020-10-14 04:12:35,028 INFO L226 Difference]: Without dead ends: 8537 [2020-10-14 04:12:35,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:12:35,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8537 states. [2020-10-14 04:12:35,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8537 to 8533. [2020-10-14 04:12:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8533 states. [2020-10-14 04:12:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8533 states to 8533 states and 10601 transitions. [2020-10-14 04:12:35,250 INFO L78 Accepts]: Start accepts. Automaton has 8533 states and 10601 transitions. Word has length 132 [2020-10-14 04:12:35,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:12:35,251 INFO L479 AbstractCegarLoop]: Abstraction has 8533 states and 10601 transitions. [2020-10-14 04:12:35,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:12:35,251 INFO L276 IsEmpty]: Start isEmpty. Operand 8533 states and 10601 transitions. [2020-10-14 04:12:35,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 04:12:35,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:12:35,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:35,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:12:35,254 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:12:35,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:12:35,255 INFO L82 PathProgramCache]: Analyzing trace with hash 51287172, now seen corresponding path program 1 times [2020-10-14 04:12:35,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:12:35,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818585436] [2020-10-14 04:12:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:12:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:35,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:35,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:35,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 04:12:35,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:12:35,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-14 04:12:35,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:35,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 04:12:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 04:12:35,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:35,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:12:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:35,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:35,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:35,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:12:35,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:35,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:12:35,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:35,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:35,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:36,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:12:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:36,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:36,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:12:36,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:36,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 04:12:36,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:36,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:12:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:12:36,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:12:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:12:36,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818585436] [2020-10-14 04:12:36,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:12:36,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:12:36,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609523246] [2020-10-14 04:12:36,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:12:36,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:12:36,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:12:36,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:12:36,141 INFO L87 Difference]: Start difference. First operand 8533 states and 10601 transitions. Second operand 5 states. [2020-10-14 04:12:46,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:12:46,031 INFO L93 Difference]: Finished difference Result 21325 states and 27146 transitions. [2020-10-14 04:12:46,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:12:46,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 04:12:46,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:12:46,109 INFO L225 Difference]: With dead ends: 21325 [2020-10-14 04:12:46,109 INFO L226 Difference]: Without dead ends: 12798 [2020-10-14 04:12:46,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:12:46,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12798 states. [2020-10-14 04:12:46,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12798 to 12790. [2020-10-14 04:12:46,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12790 states. [2020-10-14 04:12:46,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12790 states to 12790 states and 15644 transitions. [2020-10-14 04:12:46,458 INFO L78 Accepts]: Start accepts. Automaton has 12790 states and 15644 transitions. Word has length 134 [2020-10-14 04:12:46,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:12:46,458 INFO L479 AbstractCegarLoop]: Abstraction has 12790 states and 15644 transitions. [2020-10-14 04:12:46,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:12:46,459 INFO L276 IsEmpty]: Start isEmpty. Operand 12790 states and 15644 transitions. [2020-10-14 04:12:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 04:12:46,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:12:46,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:46,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:12:46,462 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:12:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:12:46,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1755016711, now seen corresponding path program 1 times [2020-10-14 04:12:46,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:12:46,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560101584] [2020-10-14 04:12:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:12:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:46,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:46,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:47,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:47,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:47,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 04:12:47,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:12:47,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1253 [2020-10-14 04:12:47,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:47,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 04:12:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 04:12:47,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:47,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:12:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:47,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:47,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:47,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:12:47,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:47,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:12:47,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:47,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:47,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:47,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:47,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:47,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:47,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:12:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:47,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:47,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:47,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:12:47,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:47,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 04:12:47,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:47,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:47,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:12:47,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:47,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 04:12:47,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:47,970 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:12:47,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560101584] [2020-10-14 04:12:47,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:12:47,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:12:47,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928884211] [2020-10-14 04:12:47,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:12:47,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:12:47,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:12:47,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:12:47,973 INFO L87 Difference]: Start difference. First operand 12790 states and 15644 transitions. Second operand 5 states. [2020-10-14 04:12:57,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:12:57,951 INFO L93 Difference]: Finished difference Result 36921 states and 46032 transitions. [2020-10-14 04:12:57,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:12:57,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-14 04:12:57,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:12:58,045 INFO L225 Difference]: With dead ends: 36921 [2020-10-14 04:12:58,045 INFO L226 Difference]: Without dead ends: 24137 [2020-10-14 04:12:58,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:12:58,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24137 states. [2020-10-14 04:12:58,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24137 to 23427. [2020-10-14 04:12:58,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23427 states. [2020-10-14 04:12:58,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23427 states to 23427 states and 28388 transitions. [2020-10-14 04:12:58,577 INFO L78 Accepts]: Start accepts. Automaton has 23427 states and 28388 transitions. Word has length 139 [2020-10-14 04:12:58,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:12:58,578 INFO L479 AbstractCegarLoop]: Abstraction has 23427 states and 28388 transitions. [2020-10-14 04:12:58,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:12:58,578 INFO L276 IsEmpty]: Start isEmpty. Operand 23427 states and 28388 transitions. [2020-10-14 04:12:58,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 04:12:58,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:12:58,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:58,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:12:58,585 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:12:58,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:12:58,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1628105148, now seen corresponding path program 1 times [2020-10-14 04:12:58,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:12:58,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914889761] [2020-10-14 04:12:58,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:12:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:58,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:58,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:59,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:59,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 04:12:59,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:12:59,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-10-14 04:12:59,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:59,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:59,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:59,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:12:59,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 04:12:59,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:59,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:12:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:59,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:59,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:59,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:12:59,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:59,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:12:59,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:59,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:59,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:59,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:59,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:59,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:59,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:12:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:59,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:00,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:00,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:13:00,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:00,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 04:13:00,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:00,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:13:00,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:13:00,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914889761] [2020-10-14 04:13:00,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:00,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:13:00,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629477692] [2020-10-14 04:13:00,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:13:00,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:00,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:13:00,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:13:00,131 INFO L87 Difference]: Start difference. First operand 23427 states and 28388 transitions. Second operand 5 states. [2020-10-14 04:13:11,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:11,215 INFO L93 Difference]: Finished difference Result 54661 states and 67550 transitions. [2020-10-14 04:13:11,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:13:11,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-14 04:13:11,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:11,341 INFO L225 Difference]: With dead ends: 54661 [2020-10-14 04:13:11,341 INFO L226 Difference]: Without dead ends: 31240 [2020-10-14 04:13:11,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:13:11,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31240 states. [2020-10-14 04:13:11,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31240 to 31232. [2020-10-14 04:13:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31232 states. [2020-10-14 04:13:12,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31232 states to 31232 states and 37573 transitions. [2020-10-14 04:13:13,448 INFO L78 Accepts]: Start accepts. Automaton has 31232 states and 37573 transitions. Word has length 166 [2020-10-14 04:13:13,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:13:13,449 INFO L479 AbstractCegarLoop]: Abstraction has 31232 states and 37573 transitions. [2020-10-14 04:13:13,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:13:13,449 INFO L276 IsEmpty]: Start isEmpty. Operand 31232 states and 37573 transitions. [2020-10-14 04:13:13,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 04:13:13,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:13,457 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:13:13,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:13:13,457 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:13,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:13,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1459172001, now seen corresponding path program 1 times [2020-10-14 04:13:13,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:13,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890918028] [2020-10-14 04:13:13,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:13,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:13,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:14,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:16,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:16,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 04:13:16,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:13:16,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2671 [2020-10-14 04:13:16,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:16,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:13:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:13:16,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:16,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:16,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:16,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:16,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:16,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:16,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:13:16,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:16,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:16,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:16,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:16,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:13:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:16,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:16,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:16,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:13:16,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:16,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 04:13:16,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:16,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:13:16,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:16,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 04:13:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:16,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:16,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:16,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:13:16,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:16,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 04:13:16,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:16,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:13:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 04:13:16,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:13:16,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890918028] [2020-10-14 04:13:16,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:16,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:13:16,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417518883] [2020-10-14 04:13:16,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:13:16,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:16,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:13:16,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:13:16,550 INFO L87 Difference]: Start difference. First operand 31232 states and 37573 transitions. Second operand 7 states. [2020-10-14 04:13:34,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:34,297 INFO L93 Difference]: Finished difference Result 75796 states and 94908 transitions. [2020-10-14 04:13:34,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:13:34,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-14 04:13:34,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:34,494 INFO L225 Difference]: With dead ends: 75796 [2020-10-14 04:13:34,494 INFO L226 Difference]: Without dead ends: 44570 [2020-10-14 04:13:34,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 04:13:34,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44570 states. [2020-10-14 04:13:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44570 to 43814. [2020-10-14 04:13:35,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43814 states. [2020-10-14 04:13:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43814 states to 43814 states and 54893 transitions. [2020-10-14 04:13:35,597 INFO L78 Accepts]: Start accepts. Automaton has 43814 states and 54893 transitions. Word has length 204 [2020-10-14 04:13:35,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:13:35,598 INFO L479 AbstractCegarLoop]: Abstraction has 43814 states and 54893 transitions. [2020-10-14 04:13:35,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:13:35,598 INFO L276 IsEmpty]: Start isEmpty. Operand 43814 states and 54893 transitions. [2020-10-14 04:13:35,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 04:13:35,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:35,606 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:13:35,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:13:35,606 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:35,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:35,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1254933526, now seen corresponding path program 1 times [2020-10-14 04:13:35,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:35,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512727052] [2020-10-14 04:13:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:35,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:36,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:36,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 04:13:36,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:13:36,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-10-14 04:13:36,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:36,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:36,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:36,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:13:36,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 04:13:36,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:36,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:36,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:36,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:36,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:36,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:36,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:13:36,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:36,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:36,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:36,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:36,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:13:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:36,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:36,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:36,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:13:36,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:36,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:13:36,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:36,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:36,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:36,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:13:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:36,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:36,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:36,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:13:36,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:36,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 04:13:36,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:36,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:13:36,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 04:13:36,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512727052] [2020-10-14 04:13:36,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:36,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:13:36,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205010894] [2020-10-14 04:13:36,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:13:36,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:36,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:13:36,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:13:36,809 INFO L87 Difference]: Start difference. First operand 43814 states and 54893 transitions. Second operand 5 states. [2020-10-14 04:13:49,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:49,817 INFO L93 Difference]: Finished difference Result 100462 states and 129053 transitions. [2020-10-14 04:13:49,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:13:49,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-14 04:13:49,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:50,066 INFO L225 Difference]: With dead ends: 100462 [2020-10-14 04:13:50,066 INFO L226 Difference]: Without dead ends: 56670 [2020-10-14 04:13:50,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:13:50,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56670 states. [2020-10-14 04:13:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56670 to 56662. [2020-10-14 04:13:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56662 states. [2020-10-14 04:13:52,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56662 states to 56662 states and 73227 transitions. [2020-10-14 04:13:52,655 INFO L78 Accepts]: Start accepts. Automaton has 56662 states and 73227 transitions. Word has length 205 [2020-10-14 04:13:52,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:13:52,655 INFO L479 AbstractCegarLoop]: Abstraction has 56662 states and 73227 transitions. [2020-10-14 04:13:52,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:13:52,655 INFO L276 IsEmpty]: Start isEmpty. Operand 56662 states and 73227 transitions. [2020-10-14 04:13:52,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2020-10-14 04:13:52,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:52,764 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:52,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:13:52,764 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:52,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:52,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1334275133, now seen corresponding path program 1 times [2020-10-14 04:13:52,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:52,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391693858] [2020-10-14 04:13:52,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:52,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:52,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:54,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:55,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:56,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:56,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:57,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:57,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 626 [2020-10-14 04:13:57,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 04:13:57,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-14 04:13:57,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:57,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:13:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 04:13:57,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:57,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:57,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:57,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:57,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:57,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:57,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:13:57,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:57,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:57,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:57,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:57,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:57,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:58,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:13:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:58,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:58,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:58,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 04:13:58,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:58,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 04:13:58,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:58,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 04:13:58,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:58,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 04:13:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:58,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:58,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:58,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:13:58,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:58,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 04:13:58,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:58,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:13:58,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 04:13:58,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:58,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-14 04:13:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:58,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:58,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:58,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-14 04:13:58,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:58,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-14 04:13:58,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:58,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:58,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:58,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-14 04:13:58,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:58,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:58,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:13:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:58,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:58,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:58,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 04:13:58,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:58,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 04:13:58,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:58,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:58,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:58,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:58,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:58,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 186 proven. 73 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 04:13:59,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391693858] [2020-10-14 04:13:59,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:59,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:13:59,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994013739] [2020-10-14 04:13:59,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:13:59,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:59,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:13:59,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:13:59,786 INFO L87 Difference]: Start difference. First operand 56662 states and 73227 transitions. Second operand 7 states. [2020-10-14 04:14:11,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:11,486 INFO L93 Difference]: Finished difference Result 113786 states and 148932 transitions. [2020-10-14 04:14:11,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:14:11,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 610 [2020-10-14 04:14:11,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:11,677 INFO L225 Difference]: With dead ends: 113786 [2020-10-14 04:14:11,677 INFO L226 Difference]: Without dead ends: 54272 [2020-10-14 04:14:11,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:14:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54272 states. [2020-10-14 04:14:12,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54272 to 54184. [2020-10-14 04:14:12,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54184 states. [2020-10-14 04:14:12,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54184 states to 54184 states and 64933 transitions. [2020-10-14 04:14:12,558 INFO L78 Accepts]: Start accepts. Automaton has 54184 states and 64933 transitions. Word has length 610 [2020-10-14 04:14:12,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:12,559 INFO L479 AbstractCegarLoop]: Abstraction has 54184 states and 64933 transitions. [2020-10-14 04:14:12,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:14:12,559 INFO L276 IsEmpty]: Start isEmpty. Operand 54184 states and 64933 transitions. [2020-10-14 04:14:12,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2020-10-14 04:14:12,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:12,634 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:12,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:14:12,635 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:12,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:12,635 INFO L82 PathProgramCache]: Analyzing trace with hash 37261702, now seen corresponding path program 1 times [2020-10-14 04:14:12,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:12,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611143739] [2020-10-14 04:14:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:12,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:13,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:14,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:16,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:17,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:17,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:17,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 637 [2020-10-14 04:14:17,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:14:17,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 04:14:17,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:17,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:17,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:17,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 590 [2020-10-14 04:14:17,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:14:17,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:14:18,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:18,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:18,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:18,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:18,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:18,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:14:18,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:18,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:18,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:18,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:14:18,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:18,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:18,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:18,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:14:18,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 04:14:18,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:18,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:18,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:18,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:14:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:18,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:18,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:18,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:14:18,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:14:18,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:18,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:18,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:18,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:18,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 04:14:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:18,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:18,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:18,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-14 04:14:18,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:18,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-14 04:14:18,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:18,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 410 [2020-10-14 04:14:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:18,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:14:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:18,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:18,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:18,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 04:14:18,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:18,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 04:14:18,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:18,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:18,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:18,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 04:14:18,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-14 04:14:19,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611143739] [2020-10-14 04:14:19,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:19,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:14:19,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565254555] [2020-10-14 04:14:19,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:14:19,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:19,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:14:19,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:14:19,459 INFO L87 Difference]: Start difference. First operand 54184 states and 64933 transitions. Second operand 6 states. [2020-10-14 04:14:33,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:33,868 INFO L93 Difference]: Finished difference Result 126901 states and 156702 transitions. [2020-10-14 04:14:33,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:14:33,870 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 621 [2020-10-14 04:14:33,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:34,153 INFO L225 Difference]: With dead ends: 126901 [2020-10-14 04:14:34,153 INFO L226 Difference]: Without dead ends: 72727 [2020-10-14 04:14:34,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:14:34,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72727 states. [2020-10-14 04:14:35,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72727 to 69201. [2020-10-14 04:14:35,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69201 states. [2020-10-14 04:14:35,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69201 states to 69201 states and 86179 transitions. [2020-10-14 04:14:35,712 INFO L78 Accepts]: Start accepts. Automaton has 69201 states and 86179 transitions. Word has length 621 [2020-10-14 04:14:35,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:35,713 INFO L479 AbstractCegarLoop]: Abstraction has 69201 states and 86179 transitions. [2020-10-14 04:14:35,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:14:35,714 INFO L276 IsEmpty]: Start isEmpty. Operand 69201 states and 86179 transitions. [2020-10-14 04:14:35,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2020-10-14 04:14:35,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:35,841 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:14:35,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:14:35,842 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:35,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:35,842 INFO L82 PathProgramCache]: Analyzing trace with hash 792602734, now seen corresponding path program 1 times [2020-10-14 04:14:35,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:35,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719476112] [2020-10-14 04:14:35,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:36,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:37,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:38,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:39,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:41,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:41,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 771 [2020-10-14 04:14:41,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:14:41,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 04:14:41,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:41,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 721 [2020-10-14 04:14:41,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 04:14:41,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:41,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:41,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:41,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:41,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:41,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:14:41,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:41,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:41,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:41,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:14:41,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:41,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:41,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:41,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:14:41,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:41,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 04:14:41,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:41,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:41,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:14:41,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:14:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:41,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:41,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:41,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:14:41,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:41,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:14:41,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:41,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:41,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:41,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:41,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:14:41,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 04:14:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:41,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:41,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-14 04:14:41,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:41,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-14 04:14:41,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:41,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:41,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:41,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:41,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 541 [2020-10-14 04:14:41,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:41,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:14:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:42,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:43,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:43,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 04:14:43,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:43,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1819 [2020-10-14 04:14:43,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:43,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:43,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:43,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 256 [2020-10-14 04:14:43,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:43,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 04:14:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:43,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:43,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:14:43,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:43,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 04:14:43,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:43,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:43,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:43,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:43,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:14:43,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:14:44,257 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-14 04:14:44,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719476112] [2020-10-14 04:14:44,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:44,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:14:44,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641919402] [2020-10-14 04:14:44,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:14:44,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:44,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:14:44,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:14:44,261 INFO L87 Difference]: Start difference. First operand 69201 states and 86179 transitions. Second operand 5 states. [2020-10-14 04:14:59,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:59,057 INFO L93 Difference]: Finished difference Result 161193 states and 201954 transitions. [2020-10-14 04:14:59,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:14:59,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 753 [2020-10-14 04:14:59,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:59,472 INFO L225 Difference]: With dead ends: 161193 [2020-10-14 04:14:59,472 INFO L226 Difference]: Without dead ends: 92002 [2020-10-14 04:14:59,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:14:59,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92002 states. [2020-10-14 04:15:01,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92002 to 84944. [2020-10-14 04:15:01,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84944 states. [2020-10-14 04:15:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84944 states to 84944 states and 105736 transitions. [2020-10-14 04:15:01,669 INFO L78 Accepts]: Start accepts. Automaton has 84944 states and 105736 transitions. Word has length 753 [2020-10-14 04:15:01,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:01,674 INFO L479 AbstractCegarLoop]: Abstraction has 84944 states and 105736 transitions. [2020-10-14 04:15:01,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:15:01,675 INFO L276 IsEmpty]: Start isEmpty. Operand 84944 states and 105736 transitions. [2020-10-14 04:15:01,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2020-10-14 04:15:01,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:01,820 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:15:01,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:15:01,820 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:01,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:01,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1943603603, now seen corresponding path program 1 times [2020-10-14 04:15:01,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:01,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248809812] [2020-10-14 04:15:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:01,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:02,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:02,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:04,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:06,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:06,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:06,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 971 [2020-10-14 04:15:06,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:15:06,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 04:15:06,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:06,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-14 04:15:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 04:15:06,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:07,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:07,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:07,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:07,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:07,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:07,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:15:07,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:07,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:07,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:07,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:07,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:07,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:07,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 04:15:07,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:07,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 04:15:07,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:07,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:07,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:07,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:07,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-14 04:15:07,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:07,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-14 04:15:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:07,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:07,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:07,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:15:07,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:07,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 04:15:07,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:07,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:07,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:07,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:15:07,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:15:07,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:07,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-14 04:15:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:07,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:07,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:07,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:15:07,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:07,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:15:07,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:07,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:07,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:07,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 04:15:07,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:07,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:07,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-10-14 04:15:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:07,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:07,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:07,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-14 04:15:07,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:07,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 04:15:07,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:07,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:07,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:07,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 558 [2020-10-14 04:15:07,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:07,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:07,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:15:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:07,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:07,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:07,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 04:15:07,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:07,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 04:15:07,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:07,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:07,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:07,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:08,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:08,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:08,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 04:15:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:08,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:08,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:08,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:15:08,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:08,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:15:08,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:08,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:08,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:08,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 243 proven. 157 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2020-10-14 04:15:08,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248809812] [2020-10-14 04:15:08,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:08,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:15:08,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452326451] [2020-10-14 04:15:08,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:15:08,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:08,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:15:08,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:15:08,561 INFO L87 Difference]: Start difference. First operand 84944 states and 105736 transitions. Second operand 7 states.