/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/Problem04_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:58:41,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:58:41,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:58:41,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:58:41,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:58:41,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:58:41,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:58:41,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:58:41,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:58:41,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:58:41,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:58:41,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:58:41,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:58:41,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:58:41,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:58:41,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:58:41,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:58:41,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:58:41,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:58:41,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:58:41,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:58:41,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:58:41,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:58:41,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:58:41,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:58:41,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:58:41,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:58:41,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:58:41,806 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:58:41,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:58:41,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:58:41,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:58:41,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:58:41,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:58:41,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:58:41,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:58:41,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:58:41,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:58:41,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:58:41,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:58:41,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:58:41,814 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 00:58:41,840 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:58:41,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:58:41,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:58:41,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:58:41,841 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:58:41,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:58:41,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:58:41,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:58:41,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:58:41,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:58:41,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:58:41,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:58:41,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:58:41,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:58:41,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:58:41,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:58:41,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:58:41,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:58:41,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:58:41,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:58:41,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:58:41,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:58:41,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:58:41,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:58:41,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:58:41,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:58:41,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:58:41,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:58:41,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:58:41,850 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 00:58:42,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:58:42,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:58:42,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:58:42,181 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:58:42,182 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:58:42,182 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label07.c [2020-10-14 00:58:42,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b27cb11c/7461b965516b4f4db279857c8fac795c/FLAG2e7c7cb35 [2020-10-14 00:58:43,027 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:58:43,028 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label07.c [2020-10-14 00:58:43,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b27cb11c/7461b965516b4f4db279857c8fac795c/FLAG2e7c7cb35 [2020-10-14 00:58:43,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b27cb11c/7461b965516b4f4db279857c8fac795c [2020-10-14 00:58:43,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:58:43,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:58:43,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:58:43,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:58:43,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:58:43,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:58:43" (1/1) ... [2020-10-14 00:58:43,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34cd281f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:43, skipping insertion in model container [2020-10-14 00:58:43,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:58:43" (1/1) ... [2020-10-14 00:58:43,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:58:43,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:58:45,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:58:45,254 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:58:45,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:58:45,920 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:58:45,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:45 WrapperNode [2020-10-14 00:58:45,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:58:45,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:58:45,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:58:45,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:58:45,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:45" (1/1) ... [2020-10-14 00:58:45,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:45" (1/1) ... [2020-10-14 00:58:45,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:45" (1/1) ... [2020-10-14 00:58:45,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:45" (1/1) ... [2020-10-14 00:58:46,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:45" (1/1) ... [2020-10-14 00:58:46,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:45" (1/1) ... [2020-10-14 00:58:46,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:45" (1/1) ... [2020-10-14 00:58:46,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:58:46,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:58:46,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:58:46,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:58:46,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:45" (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 00:58:46,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:58:46,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:58:46,267 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:58:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 00:58:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 00:58:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 00:58:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:58:46,268 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:58:46,268 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 00:58:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 00:58:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 00:58:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:58:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:58:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:58:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:58:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:58:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:58:50,646 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:58:50,647 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:58:50,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:58:50 BoogieIcfgContainer [2020-10-14 00:58:50,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:58:50,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:58:50,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:58:50,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:58:50,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:58:43" (1/3) ... [2020-10-14 00:58:50,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c2086b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:58:50, skipping insertion in model container [2020-10-14 00:58:50,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:45" (2/3) ... [2020-10-14 00:58:50,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c2086b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:58:50, skipping insertion in model container [2020-10-14 00:58:50,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:58:50" (3/3) ... [2020-10-14 00:58:50,678 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label07.c [2020-10-14 00:58:50,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:58:50,700 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:58:50,715 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:58:50,745 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:58:50,745 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:58:50,745 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:58:50,746 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:58:50,746 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:58:50,746 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:58:50,746 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:58:50,746 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:58:50,788 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 00:58:50,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2020-10-14 00:58:50,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:58:50,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:58:50,850 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:58:50,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:58:50,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1268037282, now seen corresponding path program 1 times [2020-10-14 00:58:50,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:58:50,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303831900] [2020-10-14 00:58:50,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:58:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:51,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:55,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:56,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:56,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 815 [2020-10-14 00:58:56,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:58:56,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-14 00:58:56,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:56,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:58:56,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:58:56,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 809 [2020-10-14 00:58:56,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 00:58:57,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:58:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:57,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:57,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:58:57,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:57,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:58:57,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:57,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:57,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:57,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:58:57,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:58:59,056 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 00:58:59,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303831900] [2020-10-14 00:58:59,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:58:59,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:58:59,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050733330] [2020-10-14 00:58:59,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:58:59,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:58:59,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:58:59,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:58:59,088 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 00:59:07,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:59:07,010 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2020-10-14 00:59:07,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:59:07,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 801 [2020-10-14 00:59:07,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:59:07,064 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 00:59:07,064 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 00:59:07,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:59:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 00:59:07,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2020-10-14 00:59:07,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-10-14 00:59:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2729 transitions. [2020-10-14 00:59:07,252 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2729 transitions. Word has length 801 [2020-10-14 00:59:07,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:59:07,256 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 2729 transitions. [2020-10-14 00:59:07,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:59:07,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2729 transitions. [2020-10-14 00:59:07,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2020-10-14 00:59:07,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:59:07,291 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:59:07,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:59:07,292 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:59:07,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:59:07,293 INFO L82 PathProgramCache]: Analyzing trace with hash -584046029, now seen corresponding path program 1 times [2020-10-14 00:59:07,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:59:07,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622954527] [2020-10-14 00:59:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:59:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:07,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:12,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:12,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 825 [2020-10-14 00:59:12,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:59:12,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 00:59:12,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:12,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:59:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:59:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:59:12,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:13,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:59:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:13,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:13,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:13,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:59:13,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:13,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:59:13,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:13,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:13,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:59:13,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:59:13,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:13,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:59:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:13,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:13,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:13,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:59:13,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:13,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 00:59:13,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:13,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:59:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:59:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 00:59:13,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:13,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:59:13,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622954527] [2020-10-14 00:59:13,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:59:13,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 00:59:13,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81288877] [2020-10-14 00:59:13,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:59:13,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:59:13,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:59:13,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:59:13,781 INFO L87 Difference]: Start difference. First operand 1689 states and 2729 transitions. Second operand 8 states. [2020-10-14 00:59:26,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:59:26,090 INFO L93 Difference]: Finished difference Result 5213 states and 8519 transitions. [2020-10-14 00:59:26,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 00:59:26,092 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 809 [2020-10-14 00:59:26,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:59:26,119 INFO L225 Difference]: With dead ends: 5213 [2020-10-14 00:59:26,119 INFO L226 Difference]: Without dead ends: 3530 [2020-10-14 00:59:26,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:59:26,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3530 states. [2020-10-14 00:59:26,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3530 to 3436. [2020-10-14 00:59:26,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3436 states. [2020-10-14 00:59:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3436 states to 3436 states and 5082 transitions. [2020-10-14 00:59:26,307 INFO L78 Accepts]: Start accepts. Automaton has 3436 states and 5082 transitions. Word has length 809 [2020-10-14 00:59:26,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:59:26,308 INFO L479 AbstractCegarLoop]: Abstraction has 3436 states and 5082 transitions. [2020-10-14 00:59:26,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:59:26,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3436 states and 5082 transitions. [2020-10-14 00:59:26,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2020-10-14 00:59:26,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:59:26,327 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:59:26,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:59:26,328 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:59:26,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:59:26,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2061267873, now seen corresponding path program 1 times [2020-10-14 00:59:26,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:59:26,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839530988] [2020-10-14 00:59:26,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:59:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:26,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:27,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:31,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:31,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 828 [2020-10-14 00:59:31,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:59:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-14 00:59:31,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:31,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:59:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:59:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:59:31,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:31,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:59:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:31,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:31,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:31,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:59:31,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:31,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:59:31,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:31,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:59:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:31,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:59:31,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:31,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:59:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:31,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:31,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:31,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:59:31,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:31,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:59:31,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:31,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:31,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:59:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:59:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:59:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:59:32,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839530988] [2020-10-14 00:59:32,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:59:32,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:59:32,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949688123] [2020-10-14 00:59:32,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:59:32,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:59:32,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:59:32,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:59:32,203 INFO L87 Difference]: Start difference. First operand 3436 states and 5082 transitions. Second operand 7 states. [2020-10-14 00:59:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:59:42,719 INFO L93 Difference]: Finished difference Result 10472 states and 15759 transitions. [2020-10-14 00:59:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:59:42,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 812 [2020-10-14 00:59:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:59:42,755 INFO L225 Difference]: With dead ends: 10472 [2020-10-14 00:59:42,755 INFO L226 Difference]: Without dead ends: 7042 [2020-10-14 00:59:42,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 00:59:42,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7042 states. [2020-10-14 00:59:42,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7042 to 6964. [2020-10-14 00:59:42,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6964 states. [2020-10-14 00:59:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6964 states to 6964 states and 9950 transitions. [2020-10-14 00:59:43,009 INFO L78 Accepts]: Start accepts. Automaton has 6964 states and 9950 transitions. Word has length 812 [2020-10-14 00:59:43,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:59:43,010 INFO L479 AbstractCegarLoop]: Abstraction has 6964 states and 9950 transitions. [2020-10-14 00:59:43,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:59:43,014 INFO L276 IsEmpty]: Start isEmpty. Operand 6964 states and 9950 transitions. [2020-10-14 00:59:43,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2020-10-14 00:59:43,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:59:43,040 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:59:43,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:59:43,040 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:59:43,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:59:43,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1143261202, now seen corresponding path program 1 times [2020-10-14 00:59:43,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:59:43,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266382013] [2020-10-14 00:59:43,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:59:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:43,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:43,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:43,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:47,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:48,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:48,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 836 [2020-10-14 00:59:48,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:59:48,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-14 00:59:48,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:48,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:59:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:59:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:59:48,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:59:48,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:59:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:48,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:48,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:48,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:59:48,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:48,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:59:48,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:48,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:59:48,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:48,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:59:48,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:48,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:59:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:48,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:48,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:48,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:59:48,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:59:48,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:48,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:59:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:59:48,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:48,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:59:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:48,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:48,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:48,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:59:48,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:48,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:59:48,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:48,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:48,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:59:48,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:59:48,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 00:59:48,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:59:49,279 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:59:49,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266382013] [2020-10-14 00:59:49,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:59:49,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:59:49,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701607998] [2020-10-14 00:59:49,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:59:49,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:59:49,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:59:49,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:59:49,284 INFO L87 Difference]: Start difference. First operand 6964 states and 9950 transitions. Second operand 7 states. [2020-10-14 01:00:05,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:00:05,776 INFO L93 Difference]: Finished difference Result 22594 states and 34057 transitions. [2020-10-14 01:00:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:00:05,777 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 818 [2020-10-14 01:00:05,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:00:05,866 INFO L225 Difference]: With dead ends: 22594 [2020-10-14 01:00:05,866 INFO L226 Difference]: Without dead ends: 15636 [2020-10-14 01:00:05,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:00:05,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15636 states. [2020-10-14 01:00:06,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15636 to 15576. [2020-10-14 01:00:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15576 states. [2020-10-14 01:00:06,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15576 states to 15576 states and 21188 transitions. [2020-10-14 01:00:06,380 INFO L78 Accepts]: Start accepts. Automaton has 15576 states and 21188 transitions. Word has length 818 [2020-10-14 01:00:06,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:00:06,380 INFO L479 AbstractCegarLoop]: Abstraction has 15576 states and 21188 transitions. [2020-10-14 01:00:06,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:00:06,381 INFO L276 IsEmpty]: Start isEmpty. Operand 15576 states and 21188 transitions. [2020-10-14 01:00:06,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2020-10-14 01:00:06,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:00:06,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:00:06,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:00:06,446 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:00:06,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:00:06,447 INFO L82 PathProgramCache]: Analyzing trace with hash 83346243, now seen corresponding path program 1 times [2020-10-14 01:00:06,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:00:06,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731098657] [2020-10-14 01:00:06,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:00:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:06,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:07,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:10,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:11,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:11,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 833 [2020-10-14 01:00:11,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:00:11,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 01:00:11,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:11,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:11,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:00:11,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:00:11,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 01:00:11,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:11,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:00:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:11,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:11,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:11,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:00:11,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:11,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:00:11,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:11,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:00:11,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:11,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:00:11,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:11,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:00:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:11,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:11,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:11,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:00:11,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:11,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 01:00:11,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:11,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:00:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:00:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:00:11,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:00:12,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731098657] [2020-10-14 01:00:12,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:00:12,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:00:12,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457638107] [2020-10-14 01:00:12,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:00:12,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:00:12,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:00:12,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:00:12,280 INFO L87 Difference]: Start difference. First operand 15576 states and 21188 transitions. Second operand 7 states. [2020-10-14 01:00:23,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:00:23,343 INFO L93 Difference]: Finished difference Result 43073 states and 65963 transitions. [2020-10-14 01:00:23,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:00:23,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 817 [2020-10-14 01:00:23,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:00:23,500 INFO L225 Difference]: With dead ends: 43073 [2020-10-14 01:00:23,501 INFO L226 Difference]: Without dead ends: 27507 [2020-10-14 01:00:23,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:00:23,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27507 states. [2020-10-14 01:00:24,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27507 to 26995. [2020-10-14 01:00:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26995 states. [2020-10-14 01:00:24,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26995 states to 26995 states and 36097 transitions. [2020-10-14 01:00:24,468 INFO L78 Accepts]: Start accepts. Automaton has 26995 states and 36097 transitions. Word has length 817 [2020-10-14 01:00:24,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:00:24,468 INFO L479 AbstractCegarLoop]: Abstraction has 26995 states and 36097 transitions. [2020-10-14 01:00:24,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:00:24,469 INFO L276 IsEmpty]: Start isEmpty. Operand 26995 states and 36097 transitions. [2020-10-14 01:00:24,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2020-10-14 01:00:24,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:00:24,561 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:00:24,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:00:24,562 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:00:24,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:00:24,562 INFO L82 PathProgramCache]: Analyzing trace with hash 271794285, now seen corresponding path program 1 times [2020-10-14 01:00:24,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:00:24,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750640916] [2020-10-14 01:00:24,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:00:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:24,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:25,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:29,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:29,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 834 [2020-10-14 01:00:29,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:00:29,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 01:00:29,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:29,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:00:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:00:29,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:00:29,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:30,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:00:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:30,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:30,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:30,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:00:30,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:30,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:00:30,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:30,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:00:30,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:30,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:00:30,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:30,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:00:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:30,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:30,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:30,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:00:30,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:30,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 01:00:30,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:30,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:30,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:00:30,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:00:30,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:00:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:00:30,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750640916] [2020-10-14 01:00:30,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:00:30,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:00:30,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602794421] [2020-10-14 01:00:30,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:00:30,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:00:30,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:00:30,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:00:30,483 INFO L87 Difference]: Start difference. First operand 26995 states and 36097 transitions. Second operand 7 states. [2020-10-14 01:00:35,471 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-14 01:00:46,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:00:46,187 INFO L93 Difference]: Finished difference Result 76336 states and 106290 transitions. [2020-10-14 01:00:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:00:46,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 818 [2020-10-14 01:00:46,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:00:46,390 INFO L225 Difference]: With dead ends: 76336 [2020-10-14 01:00:46,390 INFO L226 Difference]: Without dead ends: 49351 [2020-10-14 01:00:46,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:00:46,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49351 states. [2020-10-14 01:00:47,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49351 to 49160. [2020-10-14 01:00:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49160 states. [2020-10-14 01:00:47,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49160 states to 49160 states and 65053 transitions. [2020-10-14 01:00:47,699 INFO L78 Accepts]: Start accepts. Automaton has 49160 states and 65053 transitions. Word has length 818 [2020-10-14 01:00:47,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:00:47,700 INFO L479 AbstractCegarLoop]: Abstraction has 49160 states and 65053 transitions. [2020-10-14 01:00:47,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:00:47,700 INFO L276 IsEmpty]: Start isEmpty. Operand 49160 states and 65053 transitions. [2020-10-14 01:00:47,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2020-10-14 01:00:47,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:00:47,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:00:47,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:00:47,766 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:00:47,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:00:47,767 INFO L82 PathProgramCache]: Analyzing trace with hash -2045701294, now seen corresponding path program 1 times [2020-10-14 01:00:47,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:00:47,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691274278] [2020-10-14 01:00:47,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:00:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:47,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:47,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:50,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:52,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:52,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 854 [2020-10-14 01:00:52,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:00:52,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 01:00:52,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:52,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:52,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:00:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:00:52,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 01:00:52,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:53,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:00:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:53,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:53,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:53,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:00:53,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:53,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:00:53,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:53,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:00:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:00:53,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:53,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:00:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:53,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:53,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:53,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:00:53,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:53,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:00:53,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:53,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:53,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:00:53,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:53,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:00:53,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:53,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:00:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:53,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:53,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:53,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:00:53,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:53,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 01:00:53,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:53,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:00:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:00:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:00:53,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:00:53,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691274278] [2020-10-14 01:00:53,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:00:53,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:00:53,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688933207] [2020-10-14 01:00:53,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:00:53,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:00:53,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:00:53,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:00:53,382 INFO L87 Difference]: Start difference. First operand 49160 states and 65053 transitions. Second operand 7 states. [2020-10-14 01:01:04,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:01:04,405 INFO L93 Difference]: Finished difference Result 123319 states and 170035 transitions. [2020-10-14 01:01:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:01:04,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 836 [2020-10-14 01:01:04,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:01:04,654 INFO L225 Difference]: With dead ends: 123319 [2020-10-14 01:01:04,654 INFO L226 Difference]: Without dead ends: 74999 [2020-10-14 01:01:04,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:01:04,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74999 states. [2020-10-14 01:01:06,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74999 to 73969. [2020-10-14 01:01:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73969 states. [2020-10-14 01:01:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73969 states to 73969 states and 94365 transitions. [2020-10-14 01:01:06,306 INFO L78 Accepts]: Start accepts. Automaton has 73969 states and 94365 transitions. Word has length 836 [2020-10-14 01:01:06,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:01:06,306 INFO L479 AbstractCegarLoop]: Abstraction has 73969 states and 94365 transitions. [2020-10-14 01:01:06,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:01:06,307 INFO L276 IsEmpty]: Start isEmpty. Operand 73969 states and 94365 transitions. [2020-10-14 01:01:06,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2020-10-14 01:01:06,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:01:06,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:01:06,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 01:01:06,386 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:01:06,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:01:06,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1304169922, now seen corresponding path program 1 times [2020-10-14 01:01:06,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:01:06,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415576854] [2020-10-14 01:01:06,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:01:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:08,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:09,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:09,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 855 [2020-10-14 01:01:09,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:01:09,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3097 [2020-10-14 01:01:09,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:09,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 01:01:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:01:09,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 806 [2020-10-14 01:01:09,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:09,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:01:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:09,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:09,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:09,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:01:09,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:09,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:01:09,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:09,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:09,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:09,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:09,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:09,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:09,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:01:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:09,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:09,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:09,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:01:09,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:09,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:01:09,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:09,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:09,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:09,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:01:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:10,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:10,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:10,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:01:10,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:10,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:01:10,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:10,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:01:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:01:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 01:01:10,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415576854] [2020-10-14 01:01:10,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:01:10,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 01:01:10,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922956649] [2020-10-14 01:01:10,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:01:10,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:01:10,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:01:10,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:01:10,678 INFO L87 Difference]: Start difference. First operand 73969 states and 94365 transitions. Second operand 5 states. [2020-10-14 01:01:20,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:01:20,506 INFO L93 Difference]: Finished difference Result 158666 states and 204987 transitions. [2020-10-14 01:01:20,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:01:20,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 837 [2020-10-14 01:01:20,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:01:20,753 INFO L225 Difference]: With dead ends: 158666 [2020-10-14 01:01:20,753 INFO L226 Difference]: Without dead ends: 85537 [2020-10-14 01:01:20,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 01:01:20,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85537 states. [2020-10-14 01:01:22,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85537 to 85509. [2020-10-14 01:01:22,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85509 states. [2020-10-14 01:01:22,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85509 states to 85509 states and 103468 transitions. [2020-10-14 01:01:22,394 INFO L78 Accepts]: Start accepts. Automaton has 85509 states and 103468 transitions. Word has length 837 [2020-10-14 01:01:22,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:01:22,395 INFO L479 AbstractCegarLoop]: Abstraction has 85509 states and 103468 transitions. [2020-10-14 01:01:22,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:01:22,396 INFO L276 IsEmpty]: Start isEmpty. Operand 85509 states and 103468 transitions. [2020-10-14 01:01:22,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2020-10-14 01:01:22,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:01:22,494 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:01:22,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 01:01:22,495 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:01:22,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:01:22,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2070271327, now seen corresponding path program 1 times [2020-10-14 01:01:22,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:01:22,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652155034] [2020-10-14 01:01:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:01:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:22,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:22,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:25,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:27,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:27,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1026 [2020-10-14 01:01:27,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:01:27,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-14 01:01:27,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:27,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:27,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:27,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 01:01:27,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 01:01:27,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:01:27,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:01:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:27,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:27,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:27,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:01:27,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:27,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:01:27,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:27,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:27,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:27,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:27,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:27,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:27,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:01:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:27,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:27,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:01:27,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:27,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:01:27,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:27,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:27,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:27,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:27,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:27,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:27,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:01:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:27,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:27,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:27,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 01:01:27,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:27,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 01:01:27,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:27,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:27,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:01:27,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:27,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 01:01:27,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:27,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-14 01:01:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:27,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:28,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:28,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 01:01:28,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:28,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 01:01:28,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:28,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:01:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 01:01:28,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:28,859 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 01:01:28,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652155034] [2020-10-14 01:01:28,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:01:28,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:01:28,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692736349] [2020-10-14 01:01:28,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:01:28,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:01:28,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:01:28,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:01:28,862 INFO L87 Difference]: Start difference. First operand 85509 states and 103468 transitions. Second operand 7 states. [2020-10-14 01:01:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:01:41,003 INFO L93 Difference]: Finished difference Result 190562 states and 235113 transitions. [2020-10-14 01:01:41,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:01:41,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1006 [2020-10-14 01:01:41,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:01:41,326 INFO L225 Difference]: With dead ends: 190562 [2020-10-14 01:01:41,326 INFO L226 Difference]: Without dead ends: 105893 [2020-10-14 01:01:41,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:01:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105893 states. [2020-10-14 01:01:42,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105893 to 105811. [2020-10-14 01:01:42,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105811 states. [2020-10-14 01:01:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105811 states to 105811 states and 125789 transitions. [2020-10-14 01:01:42,770 INFO L78 Accepts]: Start accepts. Automaton has 105811 states and 125789 transitions. Word has length 1006 [2020-10-14 01:01:42,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:01:42,771 INFO L479 AbstractCegarLoop]: Abstraction has 105811 states and 125789 transitions. [2020-10-14 01:01:42,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:01:42,771 INFO L276 IsEmpty]: Start isEmpty. Operand 105811 states and 125789 transitions. [2020-10-14 01:01:42,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2020-10-14 01:01:42,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:01:42,866 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:01:42,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 01:01:42,866 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:01:42,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:01:42,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1765199673, now seen corresponding path program 1 times [2020-10-14 01:01:42,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:01:42,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66331571] [2020-10-14 01:01:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:01:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:43,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:43,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:48,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:48,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1078 [2020-10-14 01:01:48,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:01:48,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 01:01:48,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:48,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:48,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:48,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-14 01:01:48,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 01:01:48,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:48,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:01:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:48,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:48,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:48,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:01:48,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:48,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:01:48,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:48,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:48,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:48,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:01:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:48,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:48,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:48,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:01:48,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:48,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:01:48,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:48,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:48,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:48,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:01:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:48,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:48,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:48,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 01:01:48,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:48,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 01:01:48,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:48,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:01:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 01:01:48,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:48,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 01:01:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:48,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:48,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:48,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 01:01:48,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:48,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 01:01:48,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:48,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:01:48,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 01:01:48,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:49,562 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 01:01:49,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66331571] [2020-10-14 01:01:49,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:01:49,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:01:49,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758077208] [2020-10-14 01:01:49,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:01:49,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:01:49,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:01:49,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:01:49,564 INFO L87 Difference]: Start difference. First operand 105811 states and 125789 transitions. Second operand 7 states. [2020-10-14 01:02:01,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:02:01,892 INFO L93 Difference]: Finished difference Result 211961 states and 253699 transitions. [2020-10-14 01:02:01,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:02:01,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1058 [2020-10-14 01:02:01,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:02:02,208 INFO L225 Difference]: With dead ends: 211961 [2020-10-14 01:02:02,209 INFO L226 Difference]: Without dead ends: 106990 [2020-10-14 01:02:02,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:02:02,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106990 states. [2020-10-14 01:02:03,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106990 to 106938. [2020-10-14 01:02:03,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106938 states. [2020-10-14 01:02:03,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106938 states to 106938 states and 124606 transitions. [2020-10-14 01:02:03,965 INFO L78 Accepts]: Start accepts. Automaton has 106938 states and 124606 transitions. Word has length 1058 [2020-10-14 01:02:03,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:02:03,966 INFO L479 AbstractCegarLoop]: Abstraction has 106938 states and 124606 transitions. [2020-10-14 01:02:03,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:02:03,966 INFO L276 IsEmpty]: Start isEmpty. Operand 106938 states and 124606 transitions. [2020-10-14 01:02:04,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1119 [2020-10-14 01:02:04,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:02:04,052 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:02:04,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 01:02:04,053 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:02:04,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:02:04,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1916247110, now seen corresponding path program 1 times [2020-10-14 01:02:04,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:02:04,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670404588] [2020-10-14 01:02:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:02:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:04,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:04,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:04,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:04,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:06,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:09,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:09,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1144 [2020-10-14 01:02:09,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:02:09,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 01:02:09,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:09,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:09,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:02:09,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 01:02:09,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 01:02:09,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:02:09,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:02:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:09,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:09,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:09,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:02:09,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:02:09,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:09,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:02:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:02:09,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:09,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:02:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:09,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:09,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:09,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:02:09,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:09,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:02:09,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:09,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:02:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:02:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:09,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:02:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:09,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:09,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:09,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:02:09,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:09,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:02:09,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:09,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:09,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:02:09,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:09,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:02:09,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:09,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 01:02:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:09,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:09,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:09,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:02:09,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:09,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 01:02:09,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:09,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:02:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 01:02:09,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:09,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 01:02:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:09,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:09,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:09,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 01:02:09,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 01:02:09,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:09,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:02:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:02:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 01:02:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:09,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-14 01:02:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:09,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:09,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:09,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 01:02:09,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:09,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 01:02:09,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:09,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:09,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:02:09,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 01:02:09,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:02:09,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:09,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-10-14 01:02:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:09,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:09,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:09,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 01:02:09,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:09,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 01:02:09,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:09,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:02:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 01:02:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:02:09,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 410 proven. 116 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-10-14 01:02:10,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670404588] [2020-10-14 01:02:10,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:02:10,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:02:10,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809275293] [2020-10-14 01:02:10,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:02:10,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:02:10,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:02:10,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:02:10,470 INFO L87 Difference]: Start difference. First operand 106938 states and 124606 transitions. Second operand 7 states.