/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_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:58:57,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:58:57,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:58:57,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:58:57,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:58:57,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:58:57,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:58:57,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:58:57,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:58:57,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:58:57,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:58:57,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:58:57,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:58:57,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:58:57,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:58:57,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:58:57,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:58:57,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:58:57,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:58:57,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:58:57,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:58:57,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:58:57,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:58:57,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:58:57,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:58:57,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:58:57,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:58:57,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:58:57,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:58:57,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:58:57,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:58:57,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:58:57,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:58:57,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:58:57,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:58:57,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:58:57,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:58:57,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:58:57,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:58:57,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:58:57,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:58:57,979 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 00:58:57,999 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:58:58,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:58:58,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:58:58,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:58:58,001 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:58:58,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:58:58,002 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:58:58,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:58:58,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:58:58,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:58:58,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:58:58,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:58:58,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:58:58,003 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:58:58,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:58:58,003 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:58:58,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:58:58,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:58:58,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:58:58,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:58:58,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:58:58,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:58:58,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:58:58,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:58:58,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:58:58,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:58:58,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:58:58,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:58:58,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:58:58,006 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 00:58:58,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:58:58,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:58:58,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:58:58,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:58:58,311 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:58:58,312 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label08.c [2020-10-14 00:58:58,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ec3e0955/f5718b62c07a4609a6abc3a45bc359c7/FLAGda259a590 [2020-10-14 00:58:59,171 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:58:59,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label08.c [2020-10-14 00:58:59,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ec3e0955/f5718b62c07a4609a6abc3a45bc359c7/FLAGda259a590 [2020-10-14 00:58:59,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ec3e0955/f5718b62c07a4609a6abc3a45bc359c7 [2020-10-14 00:58:59,275 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:58:59,278 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:58:59,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:58:59,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:58:59,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:58:59,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:58:59" (1/1) ... [2020-10-14 00:58:59,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf9508d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:58:59, skipping insertion in model container [2020-10-14 00:58:59,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:58:59" (1/1) ... [2020-10-14 00:58:59,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:58:59,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:59:01,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:59:01,040 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:59:01,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:59:01,740 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:59:01,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:01 WrapperNode [2020-10-14 00:59:01,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:59:01,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:59:01,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:59:01,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:59:01,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:01" (1/1) ... [2020-10-14 00:59:01,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:01" (1/1) ... [2020-10-14 00:59:01,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:01" (1/1) ... [2020-10-14 00:59:01,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:01" (1/1) ... [2020-10-14 00:59:01,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:01" (1/1) ... [2020-10-14 00:59:01,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:01" (1/1) ... [2020-10-14 00:59:01,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:01" (1/1) ... [2020-10-14 00:59:02,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:59:02,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:59:02,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:59:02,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:59:02,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:01" (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 00:59:02,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:59:02,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:59:02,114 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:59:02,114 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 00:59:02,115 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 00:59:02,115 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 00:59:02,115 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:59:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:59:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 00:59:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 00:59:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 00:59:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:59:02,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:59:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:59:02,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:59:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:59:02,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:59:06,456 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:59:06,457 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:59:06,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:59:06 BoogieIcfgContainer [2020-10-14 00:59:06,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:59:06,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:59:06,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:59:06,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:59:06,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:58:59" (1/3) ... [2020-10-14 00:59:06,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491b26e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:59:06, skipping insertion in model container [2020-10-14 00:59:06,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:59:01" (2/3) ... [2020-10-14 00:59:06,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491b26e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:59:06, skipping insertion in model container [2020-10-14 00:59:06,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:59:06" (3/3) ... [2020-10-14 00:59:06,477 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label08.c [2020-10-14 00:59:06,488 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:59:06,496 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:59:06,511 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:59:06,539 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:59:06,539 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:59:06,539 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:59:06,539 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:59:06,539 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:59:06,539 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:59:06,539 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:59:06,539 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:59:06,574 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-14 00:59:06,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2020-10-14 00:59:06,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:59:06,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:59:06,618 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:59:06,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:59:06,625 INFO L82 PathProgramCache]: Analyzing trace with hash 2032891658, now seen corresponding path program 1 times [2020-10-14 00:59:06,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:59:06,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377870411] [2020-10-14 00:59:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:59:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:07,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:08,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:12,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:12,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 833 [2020-10-14 00:59:12,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:59:12,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-14 00:59:12,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:12,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:12,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:59:12,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:59:12,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 827 [2020-10-14 00:59:12,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:59:13,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:59:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:13,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:13,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:13,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:59:13,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:13,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:59:13,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:13,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:59:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:13,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:59:13,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:14,648 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 00:59:14,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377870411] [2020-10-14 00:59:14,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:59:14,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:59:14,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119345620] [2020-10-14 00:59:14,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:59:14,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:59:14,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:59:14,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:59:14,672 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2020-10-14 00:59:22,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:59:22,201 INFO L93 Difference]: Finished difference Result 2672 states and 5137 transitions. [2020-10-14 00:59:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:59:22,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 819 [2020-10-14 00:59:22,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:59:22,272 INFO L225 Difference]: With dead ends: 2672 [2020-10-14 00:59:22,273 INFO L226 Difference]: Without dead ends: 1702 [2020-10-14 00:59:22,288 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 00:59:22,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-14 00:59:22,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1689. [2020-10-14 00:59:22,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-10-14 00:59:22,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 3029 transitions. [2020-10-14 00:59:22,482 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 3029 transitions. Word has length 819 [2020-10-14 00:59:22,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:59:22,485 INFO L479 AbstractCegarLoop]: Abstraction has 1689 states and 3029 transitions. [2020-10-14 00:59:22,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:59:22,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 3029 transitions. [2020-10-14 00:59:22,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2020-10-14 00:59:22,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:59:22,524 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:59:22,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:59:22,525 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:59:22,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:59:22,525 INFO L82 PathProgramCache]: Analyzing trace with hash 24217691, now seen corresponding path program 1 times [2020-10-14 00:59:22,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:59:22,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544936351] [2020-10-14 00:59:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:59:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:22,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:23,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:27,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:27,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 843 [2020-10-14 00:59:27,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:59:27,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-14 00:59:27,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:27,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:59:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:59:27,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:59:27,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 00:59:28,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:59:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:28,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:28,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:59:28,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:28,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:59:28,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:28,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:59:28,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:28,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:59:28,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:28,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:59:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:28,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:28,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:28,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 00:59:28,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:28,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 00:59:28,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:28,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:59:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:59:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 00:59:28,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:28,583 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 00:59:28,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544936351] [2020-10-14 00:59:28,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:59:28,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:59:28,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904406314] [2020-10-14 00:59:28,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:59:28,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:59:28,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:59:28,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:59:28,589 INFO L87 Difference]: Start difference. First operand 1689 states and 3029 transitions. Second operand 7 states. [2020-10-14 00:59:38,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:59:38,551 INFO L93 Difference]: Finished difference Result 5170 states and 9303 transitions. [2020-10-14 00:59:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:59:38,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 827 [2020-10-14 00:59:38,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:59:38,572 INFO L225 Difference]: With dead ends: 5170 [2020-10-14 00:59:38,573 INFO L226 Difference]: Without dead ends: 3487 [2020-10-14 00:59:38,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:59:38,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2020-10-14 00:59:38,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 3412. [2020-10-14 00:59:38,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3412 states. [2020-10-14 00:59:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5201 transitions. [2020-10-14 00:59:38,698 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5201 transitions. Word has length 827 [2020-10-14 00:59:38,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:59:38,699 INFO L479 AbstractCegarLoop]: Abstraction has 3412 states and 5201 transitions. [2020-10-14 00:59:38,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:59:38,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5201 transitions. [2020-10-14 00:59:38,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 834 [2020-10-14 00:59:38,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:59:38,734 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:59:38,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:59:38,735 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:59:38,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:59:38,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1139081255, now seen corresponding path program 1 times [2020-10-14 00:59:38,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:59:38,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933617036] [2020-10-14 00:59:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:59:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:38,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:41,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:43,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:43,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 849 [2020-10-14 00:59:43,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:59:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 00:59:43,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:43,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:59:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:59:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:59:43,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:43,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:59:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:43,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:43,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:43,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:59:43,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:43,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:59:43,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:43,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:43,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:59:43,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:43,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:59:43,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:59:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:44,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:44,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:44,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:59:44,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:44,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 00:59:44,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:44,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:44,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:59:44,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:59:44,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 00:59:44,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:44,349 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:59:44,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933617036] [2020-10-14 00:59:44,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:59:44,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:59:44,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712287815] [2020-10-14 00:59:44,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:59:44,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:59:44,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:59:44,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:59:44,352 INFO L87 Difference]: Start difference. First operand 3412 states and 5201 transitions. Second operand 7 states. [2020-10-14 00:59:53,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:59:53,686 INFO L93 Difference]: Finished difference Result 8714 states and 13304 transitions. [2020-10-14 00:59:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:59:53,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 833 [2020-10-14 00:59:53,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:59:53,713 INFO L225 Difference]: With dead ends: 8714 [2020-10-14 00:59:53,713 INFO L226 Difference]: Without dead ends: 5308 [2020-10-14 00:59:53,721 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 00:59:53,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5308 states. [2020-10-14 00:59:53,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5308 to 5231. [2020-10-14 00:59:53,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5231 states. [2020-10-14 00:59:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5231 states to 5231 states and 7076 transitions. [2020-10-14 00:59:53,860 INFO L78 Accepts]: Start accepts. Automaton has 5231 states and 7076 transitions. Word has length 833 [2020-10-14 00:59:53,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:59:53,860 INFO L479 AbstractCegarLoop]: Abstraction has 5231 states and 7076 transitions. [2020-10-14 00:59:53,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:59:53,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5231 states and 7076 transitions. [2020-10-14 00:59:53,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2020-10-14 00:59:53,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:59:53,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:59:53,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:59:53,881 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:59:53,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:59:53,882 INFO L82 PathProgramCache]: Analyzing trace with hash 411158737, now seen corresponding path program 1 times [2020-10-14 00:59:53,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:59:53,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456273870] [2020-10-14 00:59:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:59:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:53,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:54,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:57,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:58,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:58,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 850 [2020-10-14 00:59:58,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:59:58,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 00:59:58,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:58,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:58,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:59:58,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:59:58,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 00:59:58,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:59,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:59:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:59,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:59,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:59:59,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:59,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:59:59,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:59,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:59:59,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:59,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:59:59,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:59,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:59:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:59,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:59,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:59,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 00:59:59,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:59,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:59:59,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:59,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:59:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:59:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:59:59,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:59:59,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:59:59,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456273870] [2020-10-14 00:59:59,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:59:59,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:59:59,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070472240] [2020-10-14 00:59:59,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:59:59,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:59:59,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:59:59,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:59:59,469 INFO L87 Difference]: Start difference. First operand 5231 states and 7076 transitions. Second operand 7 states. [2020-10-14 01:00:10,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:00:10,045 INFO L93 Difference]: Finished difference Result 16003 states and 22278 transitions. [2020-10-14 01:00:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:00:10,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 834 [2020-10-14 01:00:10,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:00:10,104 INFO L225 Difference]: With dead ends: 16003 [2020-10-14 01:00:10,104 INFO L226 Difference]: Without dead ends: 10778 [2020-10-14 01:00:10,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:00:10,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10778 states. [2020-10-14 01:00:10,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10778 to 10605. [2020-10-14 01:00:10,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10605 states. [2020-10-14 01:00:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10605 states to 10605 states and 13665 transitions. [2020-10-14 01:00:10,453 INFO L78 Accepts]: Start accepts. Automaton has 10605 states and 13665 transitions. Word has length 834 [2020-10-14 01:00:10,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:00:10,453 INFO L479 AbstractCegarLoop]: Abstraction has 10605 states and 13665 transitions. [2020-10-14 01:00:10,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:00:10,454 INFO L276 IsEmpty]: Start isEmpty. Operand 10605 states and 13665 transitions. [2020-10-14 01:00:10,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2020-10-14 01:00:10,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:00:10,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:00:10,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:00:10,498 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:00:10,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:00:10,499 INFO L82 PathProgramCache]: Analyzing trace with hash -692763627, now seen corresponding path program 1 times [2020-10-14 01:00:10,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:00:10,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49776089] [2020-10-14 01:00:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:00:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:10,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:11,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:15,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:15,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 852 [2020-10-14 01:00:15,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:00:15,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-14 01:00:15,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:15,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:15,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:00:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:00:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:00:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:16,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:00:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:16,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:16,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:16,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:00:16,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:16,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:00:16,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:16,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:00:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:00:16,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:16,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:00:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:16,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:16,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:16,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:00:16,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:16,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 01:00:16,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:16,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:16,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:00:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:00:16,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:00:16,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:00:16,412 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 01:00:16,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49776089] [2020-10-14 01:00:16,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:00:16,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:00:16,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412376621] [2020-10-14 01:00:16,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:00:16,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:00:16,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:00:16,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:00:16,414 INFO L87 Difference]: Start difference. First operand 10605 states and 13665 transitions. Second operand 7 states. [2020-10-14 01:00:28,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:00:28,216 INFO L93 Difference]: Finished difference Result 32104 states and 43078 transitions. [2020-10-14 01:00:28,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:00:28,217 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 836 [2020-10-14 01:00:28,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:00:28,308 INFO L225 Difference]: With dead ends: 32104 [2020-10-14 01:00:28,308 INFO L226 Difference]: Without dead ends: 21505 [2020-10-14 01:00:28,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:00:28,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21505 states. [2020-10-14 01:00:28,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21505 to 21249. [2020-10-14 01:00:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21249 states. [2020-10-14 01:00:28,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21249 states to 21249 states and 27246 transitions. [2020-10-14 01:00:28,965 INFO L78 Accepts]: Start accepts. Automaton has 21249 states and 27246 transitions. Word has length 836 [2020-10-14 01:00:28,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:00:28,965 INFO L479 AbstractCegarLoop]: Abstraction has 21249 states and 27246 transitions. [2020-10-14 01:00:28,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:00:28,966 INFO L276 IsEmpty]: Start isEmpty. Operand 21249 states and 27246 transitions. [2020-10-14 01:00:29,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2020-10-14 01:00:29,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:00:29,046 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:00:29,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:00:29,047 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:00:29,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:00:29,048 INFO L82 PathProgramCache]: Analyzing trace with hash -898268250, now seen corresponding path program 1 times [2020-10-14 01:00:29,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:00:29,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193734816] [2020-10-14 01:00:29,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:00:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:29,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:32,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:32,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:32,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 873 [2020-10-14 01:00:32,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:00:32,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3332 [2020-10-14 01:00:32,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:32,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 01:00:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:00:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 824 [2020-10-14 01:00:32,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:32,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:00:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:32,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:32,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:32,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:00:32,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:32,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:00:32,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:32,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:00:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:00:32,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:32,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:00:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:32,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:32,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:32,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:00:32,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:32,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:00:32,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:32,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:00:32,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:32,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:00:32,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:32,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:00:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:32,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:32,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:00:32,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:32,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:00:32,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:32,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:32,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:00:32,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:32,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:00:32,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:33,711 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 01:00:33,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193734816] [2020-10-14 01:00:33,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:00:33,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 01:00:33,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942477020] [2020-10-14 01:00:33,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 01:00:33,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:00:33,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 01:00:33,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 01:00:33,714 INFO L87 Difference]: Start difference. First operand 21249 states and 27246 transitions. Second operand 6 states. [2020-10-14 01:00:46,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:00:46,069 INFO L93 Difference]: Finished difference Result 47627 states and 63624 transitions. [2020-10-14 01:00:46,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 01:00:46,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 855 [2020-10-14 01:00:46,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:00:46,168 INFO L225 Difference]: With dead ends: 47627 [2020-10-14 01:00:46,168 INFO L226 Difference]: Without dead ends: 26384 [2020-10-14 01:00:46,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:00:46,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26384 states. [2020-10-14 01:00:46,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26384 to 26352. [2020-10-14 01:00:46,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26352 states. [2020-10-14 01:00:46,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26352 states to 26352 states and 32621 transitions. [2020-10-14 01:00:46,770 INFO L78 Accepts]: Start accepts. Automaton has 26352 states and 32621 transitions. Word has length 855 [2020-10-14 01:00:46,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:00:46,773 INFO L479 AbstractCegarLoop]: Abstraction has 26352 states and 32621 transitions. [2020-10-14 01:00:46,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 01:00:46,774 INFO L276 IsEmpty]: Start isEmpty. Operand 26352 states and 32621 transitions. [2020-10-14 01:00:46,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2020-10-14 01:00:46,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:00:46,840 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:00:46,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:00:46,840 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:00:46,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:00:46,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1819753192, now seen corresponding path program 1 times [2020-10-14 01:00:46,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:00:46,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760071523] [2020-10-14 01:00:46,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:00:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:46,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:47,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:47,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:47,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:49,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:51,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:51,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 973 [2020-10-14 01:00:51,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 01:00:51,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 01:00:51,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:51,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:51,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:00:51,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 01:00:51,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 01:00:51,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:52,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:00:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:52,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:52,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:00:52,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:52,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:00:52,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:52,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:52,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:00:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:00:52,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:52,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:00:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:52,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:52,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:52,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:00:52,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:52,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:00:52,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:52,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:52,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:00:52,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:52,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:00:52,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:00:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:52,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:52,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:52,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:00:52,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:52,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:00:52,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:52,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:00:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:00:52,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:00:52,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:52,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 01:00:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:52,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:52,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:52,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 01:00:52,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:52,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 01:00:52,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:52,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:00:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:00:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 01:00:52,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:52,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 01:00:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:00:52,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:00:52,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:00:52,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:00:52,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:00:52,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 01:00:52,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:00:52,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:00:52,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:00:52,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:00:52,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:00:52,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:00:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 161 proven. 47 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-14 01:00:52,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760071523] [2020-10-14 01:00:52,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:00:52,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:00:52,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125653655] [2020-10-14 01:00:52,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:00:52,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:00:52,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:00:52,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:00:52,595 INFO L87 Difference]: Start difference. First operand 26352 states and 32621 transitions. Second operand 7 states. [2020-10-14 01:01:08,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:01:08,729 INFO L93 Difference]: Finished difference Result 79391 states and 105818 transitions. [2020-10-14 01:01:08,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:01:08,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 951 [2020-10-14 01:01:08,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:01:08,923 INFO L225 Difference]: With dead ends: 79391 [2020-10-14 01:01:08,923 INFO L226 Difference]: Without dead ends: 53045 [2020-10-14 01:01:08,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 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 01:01:09,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53045 states. [2020-10-14 01:01:09,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53045 to 52996. [2020-10-14 01:01:09,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52996 states. [2020-10-14 01:01:10,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52996 states to 52996 states and 65723 transitions. [2020-10-14 01:01:10,029 INFO L78 Accepts]: Start accepts. Automaton has 52996 states and 65723 transitions. Word has length 951 [2020-10-14 01:01:10,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:01:10,029 INFO L479 AbstractCegarLoop]: Abstraction has 52996 states and 65723 transitions. [2020-10-14 01:01:10,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:01:10,030 INFO L276 IsEmpty]: Start isEmpty. Operand 52996 states and 65723 transitions. [2020-10-14 01:01:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2020-10-14 01:01:10,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:01:10,158 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:01:10,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 01:01:10,159 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:01:10,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:01:10,159 INFO L82 PathProgramCache]: Analyzing trace with hash 748154816, now seen corresponding path program 1 times [2020-10-14 01:01:10,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:01:10,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970002314] [2020-10-14 01:01:10,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:01:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:10,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:10,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:10,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:15,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:15,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1049 [2020-10-14 01:01:15,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:01:15,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-14 01:01:15,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:15,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:15,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:01:15,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:01:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 01:01:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:15,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:01:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:15,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:15,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:15,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:01:15,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:15,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:01:15,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:15,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:15,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:15,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:15,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:01:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:15,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:15,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:15,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:01:15,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:15,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 01:01:15,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:15,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:01:15,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:01:15,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:15,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:01:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:15,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:15,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:15,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:15,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:01:15,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:01:15,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 01:01:15,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:15,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:01:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:01:15,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:15,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 01:01:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:15,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:15,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:15,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 01:01:15,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:15,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 01:01:15,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:15,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:01:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 01:01:15,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:15,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-14 01:01:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:15,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:15,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:15,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:01:15,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:15,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:01:15,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:15,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:01:15,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:15,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 234 proven. 53 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-14 01:01:16,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970002314] [2020-10-14 01:01:16,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:01:16,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:01:16,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348023448] [2020-10-14 01:01:16,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:01:16,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:01:16,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:01:16,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:01:16,285 INFO L87 Difference]: Start difference. First operand 52996 states and 65723 transitions. Second operand 8 states. [2020-10-14 01:01:29,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:01:29,870 INFO L93 Difference]: Finished difference Result 99218 states and 123068 transitions. [2020-10-14 01:01:29,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 01:01:29,871 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1027 [2020-10-14 01:01:29,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:01:30,028 INFO L225 Difference]: With dead ends: 99218 [2020-10-14 01:01:30,029 INFO L226 Difference]: Without dead ends: 46256 [2020-10-14 01:01:30,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:01:30,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46256 states. [2020-10-14 01:01:30,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46256 to 46123. [2020-10-14 01:01:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46123 states. [2020-10-14 01:01:31,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46123 states to 46123 states and 55850 transitions. [2020-10-14 01:01:31,018 INFO L78 Accepts]: Start accepts. Automaton has 46123 states and 55850 transitions. Word has length 1027 [2020-10-14 01:01:31,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:01:31,019 INFO L479 AbstractCegarLoop]: Abstraction has 46123 states and 55850 transitions. [2020-10-14 01:01:31,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:01:31,019 INFO L276 IsEmpty]: Start isEmpty. Operand 46123 states and 55850 transitions. [2020-10-14 01:01:31,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2020-10-14 01:01:31,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:01:31,108 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 01:01:31,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 01:01:31,109 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:01:31,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:01:31,110 INFO L82 PathProgramCache]: Analyzing trace with hash -273008085, now seen corresponding path program 1 times [2020-10-14 01:01:31,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:01:31,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624843353] [2020-10-14 01:01:31,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:01:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:31,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:31,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:31,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:32,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:36,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:36,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1058 [2020-10-14 01:01:36,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:01:36,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-14 01:01:36,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:36,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:36,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:36,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 01:01:36,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 01:01:36,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:36,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:01:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:36,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:36,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:36,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:01:36,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:36,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 01:01:36,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:36,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:36,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:36,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:36,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:36,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:36,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:01:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:36,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:36,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:36,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:01:36,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:36,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 01:01:36,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:36,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:01:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:01:36,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:36,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:01:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:36,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:36,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:36,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 01:01:36,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-14 01:01:36,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:36,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:01:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 01:01:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:36,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-14 01:01:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:36,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:36,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:36,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:01:36,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:36,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:01:36,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:36,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:01:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:36,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 230 proven. 49 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-14 01:01:37,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624843353] [2020-10-14 01:01:37,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:01:37,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:01:37,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47808481] [2020-10-14 01:01:37,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:01:37,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:01:37,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:01:37,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:01:37,531 INFO L87 Difference]: Start difference. First operand 46123 states and 55850 transitions. Second operand 7 states. [2020-10-14 01:01:48,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:01:48,739 INFO L93 Difference]: Finished difference Result 102920 states and 128921 transitions. [2020-10-14 01:01:48,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:01:48,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1038 [2020-10-14 01:01:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:01:48,892 INFO L225 Difference]: With dead ends: 102920 [2020-10-14 01:01:48,892 INFO L226 Difference]: Without dead ends: 56803 [2020-10-14 01:01:48,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:01:49,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56803 states. [2020-10-14 01:01:49,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56803 to 55561. [2020-10-14 01:01:49,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55561 states. [2020-10-14 01:01:50,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55561 states to 55561 states and 66272 transitions. [2020-10-14 01:01:50,044 INFO L78 Accepts]: Start accepts. Automaton has 55561 states and 66272 transitions. Word has length 1038 [2020-10-14 01:01:50,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:01:50,045 INFO L479 AbstractCegarLoop]: Abstraction has 55561 states and 66272 transitions. [2020-10-14 01:01:50,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:01:50,045 INFO L276 IsEmpty]: Start isEmpty. Operand 55561 states and 66272 transitions. [2020-10-14 01:01:50,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1056 [2020-10-14 01:01:50,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:01:50,133 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 01:01:50,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 01:01:50,133 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:01:50,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:01:50,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1882024312, now seen corresponding path program 1 times [2020-10-14 01:01:50,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:01:50,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37017405] [2020-10-14 01:01:50,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:01:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:50,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:50,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:50,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:55,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:55,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1077 [2020-10-14 01:01:55,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:01:55,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-14 01:01:55,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:55,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:01:55,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 01:01:55,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:55,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:01:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:55,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:55,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:55,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:01:55,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:55,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:01:55,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:55,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:55,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:55,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:55,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:55,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:01:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:55,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:55,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:55,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:01:55,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:01:55,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:55,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:55,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:01:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:55,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:55,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:55,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:01:55,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:55,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 01:01:55,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:55,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:55,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:01:55,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:01:55,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:01:55,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:55,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 01:01:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:55,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:55,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:55,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 01:01:55,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:55,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 01:01:55,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:55,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:01:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:01:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 01:01:55,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:55,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-14 01:01:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:01:55,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:01:55,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:01:55,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:01:55,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:01:55,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:01:55,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:01:55,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:01:55,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:01:55,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:01:55,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:01:55,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:01:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 267 proven. 49 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-14 01:01:56,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37017405] [2020-10-14 01:01:56,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:01:56,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:01:56,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218635009] [2020-10-14 01:01:56,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:01:56,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:01:56,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:01:56,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:01:56,457 INFO L87 Difference]: Start difference. First operand 55561 states and 66272 transitions. Second operand 7 states. [2020-10-14 01:02:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:02:11,350 INFO L93 Difference]: Finished difference Result 128803 states and 153017 transitions. [2020-10-14 01:02:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:02:11,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1055 [2020-10-14 01:02:11,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:02:11,485 INFO L225 Difference]: With dead ends: 128803 [2020-10-14 01:02:11,485 INFO L226 Difference]: Without dead ends: 73248 [2020-10-14 01:02:11,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:02:11,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73248 states. [2020-10-14 01:02:12,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73248 to 71522. [2020-10-14 01:02:12,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71522 states. [2020-10-14 01:02:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71522 states to 71522 states and 82535 transitions. [2020-10-14 01:02:12,474 INFO L78 Accepts]: Start accepts. Automaton has 71522 states and 82535 transitions. Word has length 1055 [2020-10-14 01:02:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:02:12,475 INFO L479 AbstractCegarLoop]: Abstraction has 71522 states and 82535 transitions. [2020-10-14 01:02:12,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:02:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 71522 states and 82535 transitions. [2020-10-14 01:02:12,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1136 [2020-10-14 01:02:12,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:02:12,585 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:12,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 01:02:12,586 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:02:12,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:02:12,587 INFO L82 PathProgramCache]: Analyzing trace with hash -481988968, now seen corresponding path program 1 times [2020-10-14 01:02:12,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:02:12,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039047102] [2020-10-14 01:02:12,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:02:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:13,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:13,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:13,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:17,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:17,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1157 [2020-10-14 01:02:17,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:02:17,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 01:02:17,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:17,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:17,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:02:17,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-14 01:02:17,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 01:02:17,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:18,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:02:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:18,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:18,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:18,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:02:18,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:18,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:02:18,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:18,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:18,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:02:18,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:18,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:02:18,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:18,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:02:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:18,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:18,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:18,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:02:18,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:18,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:02:18,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:18,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:02:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:18,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:02:18,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:02:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:18,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:18,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:18,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 01:02:18,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:18,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 01:02:18,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:18,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:18,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:02:18,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:02:18,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 01:02:18,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:18,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 01:02:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:18,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:18,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 01:02:18,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:18,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 01:02:18,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:18,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:18,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:02:18,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:02:18,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 01:02:18,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:18,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-14 01:02:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:02:18,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:02:18,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:02:18,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 01:02:18,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:02:18,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:02:18,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:02:18,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:02:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:02:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 01:02:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:02:18,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:02:19,186 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 452 proven. 49 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 01:02:19,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039047102] [2020-10-14 01:02:19,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:02:19,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:02:19,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347674017] [2020-10-14 01:02:19,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:02:19,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:02:19,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:02:19,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:02:19,189 INFO L87 Difference]: Start difference. First operand 71522 states and 82535 transitions. Second operand 7 states.