/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 SingleStatement --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:29:55,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:29:55,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:29:55,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:29:55,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:29:55,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:29:55,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:29:55,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:29:55,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:29:55,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:29:55,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:29:55,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:29:55,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:29:55,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:29:55,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:29:55,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:29:55,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:29:55,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:29:55,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:29:55,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:29:55,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:29:55,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:29:55,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:29:55,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:29:55,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:29:55,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:29:55,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:29:55,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:29:55,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:29:55,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:29:55,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:29:55,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:29:55,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:29:55,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:29:55,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:29:55,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:29:55,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:29:55,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:29:55,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:29:55,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:29:55,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:29:55,746 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 [2020-09-25 04:29:55,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:29:55,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:29:55,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:29:55,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:29:55,800 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:29:55,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:29:55,800 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:29:55,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:29:55,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:29:55,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:29:55,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:29:55,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:29:55,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:29:55,803 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:29:55,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:29:55,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:29:55,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:29:55,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:29:55,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:29:55,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:29:55,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:29:55,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:29:55,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:29:55,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:29:55,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:29:55,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:29:55,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:29:55,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:29:55,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:29:55,806 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 -> SingleStatement 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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=true; [2020-09-25 04:29:56,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:29:56,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:29:56,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:29:56,277 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:29:56,278 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:29:56,279 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-09-25 04:29:56,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8d42b448/5fdefea96ca146459273fca349265983/FLAGb5dc26191 [2020-09-25 04:29:57,062 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:29:57,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-09-25 04:29:57,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8d42b448/5fdefea96ca146459273fca349265983/FLAGb5dc26191 [2020-09-25 04:29:57,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8d42b448/5fdefea96ca146459273fca349265983 [2020-09-25 04:29:57,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:29:57,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:29:57,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:57,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:29:57,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:29:57,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:57" (1/1) ... [2020-09-25 04:29:57,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:57, skipping insertion in model container [2020-09-25 04:29:57,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:57" (1/1) ... [2020-09-25 04:29:57,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:29:57,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:29:57,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:57,973 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:29:58,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:58,124 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:29:58,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:58 WrapperNode [2020-09-25 04:29:58,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:58,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:29:58,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:29:58,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:29:58,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:58" (1/1) ... [2020-09-25 04:29:58,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:58" (1/1) ... [2020-09-25 04:29:58,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:58" (1/1) ... [2020-09-25 04:29:58,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:58" (1/1) ... [2020-09-25 04:29:58,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:58" (1/1) ... [2020-09-25 04:29:58,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:58" (1/1) ... [2020-09-25 04:29:58,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:58" (1/1) ... [2020-09-25 04:29:58,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:29:58,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:29:58,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:29:58,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:29:58,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:58" (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 [2020-09-25 04:29:58,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:29:58,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:29:58,346 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:29:58,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:29:58,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:29:58,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:29:58,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:29:58,347 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:29:58,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:29:58,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:29:58,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:29:59,799 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:29:59,800 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:29:59,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:59 BoogieIcfgContainer [2020-09-25 04:29:59,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:29:59,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:29:59,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:29:59,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:29:59,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:29:57" (1/3) ... [2020-09-25 04:29:59,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4862e907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:59, skipping insertion in model container [2020-09-25 04:29:59,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:58" (2/3) ... [2020-09-25 04:29:59,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4862e907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:29:59, skipping insertion in model container [2020-09-25 04:29:59,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:29:59" (3/3) ... [2020-09-25 04:29:59,821 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label19.c [2020-09-25 04:29:59,834 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:29:59,846 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:29:59,870 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:29:59,911 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:29:59,912 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:29:59,913 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:29:59,913 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:29:59,913 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:29:59,913 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:29:59,914 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:29:59,914 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:29:59,963 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:29:59,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 04:29:59,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:29:59,980 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] [2020-09-25 04:29:59,981 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:29:59,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:29:59,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1688264769, now seen corresponding path program 1 times [2020-09-25 04:30:00,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:00,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103752725] [2020-09-25 04:30:00,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:00,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:00,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:00,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 04:30:00,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:30:00,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-09-25 04:30:00,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:00,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:00,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:30:00,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 04:30:00,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:30:00,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:01,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:01,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:01,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:01,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:01,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 04:30:01,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:01,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:30:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:30:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:01,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103752725] [2020-09-25 04:30:01,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:01,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:30:01,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568924587] [2020-09-25 04:30:01,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:30:01,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:01,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:30:01,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:30:01,115 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:30:03,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:03,404 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-25 04:30:03,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:30:03,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-09-25 04:30:03,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:03,443 INFO L225 Difference]: With dead ends: 1163 [2020-09-25 04:30:03,444 INFO L226 Difference]: Without dead ends: 634 [2020-09-25 04:30:03,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:03,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-25 04:30:03,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-25 04:30:03,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-25 04:30:03,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-25 04:30:03,583 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 48 [2020-09-25 04:30:03,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:03,584 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-25 04:30:03,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:30:03,584 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-25 04:30:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 04:30:03,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:03,592 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:03,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:30:03,593 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:03,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:03,593 INFO L82 PathProgramCache]: Analyzing trace with hash -2006898993, now seen corresponding path program 1 times [2020-09-25 04:30:03,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:03,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572685110] [2020-09-25 04:30:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:03,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:03,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:04,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:06,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:06,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 04:30:06,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:30:06,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3039 [2020-09-25 04:30:06,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:06,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:06,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:30:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:30:06,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:06,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:06,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:06,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:06,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:06,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:06,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:30:06,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:06,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:06,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:06,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:06,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:06,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:06,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:06,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:06,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:30:06,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 04:30:06,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:06,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:06,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:30:06,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:06,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572685110] [2020-09-25 04:30:06,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:06,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:06,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966300145] [2020-09-25 04:30:06,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:06,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:06,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:06,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:06,954 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 5 states. [2020-09-25 04:30:08,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:08,700 INFO L93 Difference]: Finished difference Result 1461 states and 1941 transitions. [2020-09-25 04:30:08,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:08,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-09-25 04:30:08,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:08,710 INFO L225 Difference]: With dead ends: 1461 [2020-09-25 04:30:08,711 INFO L226 Difference]: Without dead ends: 896 [2020-09-25 04:30:08,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:08,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-25 04:30:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 884. [2020-09-25 04:30:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-25 04:30:08,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1146 transitions. [2020-09-25 04:30:08,787 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1146 transitions. Word has length 127 [2020-09-25 04:30:08,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:08,790 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1146 transitions. [2020-09-25 04:30:08,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:08,791 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1146 transitions. [2020-09-25 04:30:08,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 04:30:08,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:08,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:08,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:30:08,803 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:08,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:08,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1780229195, now seen corresponding path program 1 times [2020-09-25 04:30:08,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:08,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478292384] [2020-09-25 04:30:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:08,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:09,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:09,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:09,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 04:30:09,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:30:09,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1149 [2020-09-25 04:30:09,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:09,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 04:30:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 04:30:09,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:10,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:10,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:10,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:10,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:10,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:10,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:10,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:10,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:10,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:10,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:10,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:10,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:10,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:10,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:10,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 04:30:10,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:10,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 04:30:10,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:10,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:10,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:10,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:10,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 04:30:10,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:10,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478292384] [2020-09-25 04:30:10,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:10,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:10,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170414149] [2020-09-25 04:30:10,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:10,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:10,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:10,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:10,285 INFO L87 Difference]: Start difference. First operand 884 states and 1146 transitions. Second operand 5 states. [2020-09-25 04:30:11,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:11,855 INFO L93 Difference]: Finished difference Result 2069 states and 2780 transitions. [2020-09-25 04:30:11,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:11,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 04:30:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:11,871 INFO L225 Difference]: With dead ends: 2069 [2020-09-25 04:30:11,872 INFO L226 Difference]: Without dead ends: 1200 [2020-09-25 04:30:11,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:11,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2020-09-25 04:30:11,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1190. [2020-09-25 04:30:11,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-09-25 04:30:11,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1523 transitions. [2020-09-25 04:30:11,926 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1523 transitions. Word has length 139 [2020-09-25 04:30:11,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:11,928 INFO L479 AbstractCegarLoop]: Abstraction has 1190 states and 1523 transitions. [2020-09-25 04:30:11,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:11,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1523 transitions. [2020-09-25 04:30:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 04:30:11,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:11,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:11,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:30:11,939 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:11,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1973860715, now seen corresponding path program 1 times [2020-09-25 04:30:11,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:11,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747344377] [2020-09-25 04:30:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:12,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:12,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:12,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:12,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:14,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:15,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:16,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 04:30:16,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:30:16,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 04:30:16,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:16,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 04:30:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:30:16,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:17,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:17,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:17,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:17,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:17,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:17,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:17,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:17,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:17,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:17,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:17,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:17,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:17,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:17,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:17,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:30:17,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:17,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 04:30:17,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:17,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:17,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:17,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:30:17,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:17,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747344377] [2020-09-25 04:30:17,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:17,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:17,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915380053] [2020-09-25 04:30:17,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:17,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:17,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:17,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:17,336 INFO L87 Difference]: Start difference. First operand 1190 states and 1523 transitions. Second operand 5 states. [2020-09-25 04:30:19,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:19,145 INFO L93 Difference]: Finished difference Result 1845 states and 2449 transitions. [2020-09-25 04:30:19,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:19,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 04:30:19,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:19,172 INFO L225 Difference]: With dead ends: 1845 [2020-09-25 04:30:19,172 INFO L226 Difference]: Without dead ends: 1843 [2020-09-25 04:30:19,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:19,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-09-25 04:30:19,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1649. [2020-09-25 04:30:19,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1649 states. [2020-09-25 04:30:19,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2175 transitions. [2020-09-25 04:30:19,259 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2175 transitions. Word has length 140 [2020-09-25 04:30:19,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:19,260 INFO L479 AbstractCegarLoop]: Abstraction has 1649 states and 2175 transitions. [2020-09-25 04:30:19,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:19,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2175 transitions. [2020-09-25 04:30:19,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 04:30:19,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:19,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:19,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:30:19,268 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:19,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:19,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1458927402, now seen corresponding path program 1 times [2020-09-25 04:30:19,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:19,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401599451] [2020-09-25 04:30:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:19,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:19,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:19,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:20,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:20,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:24,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:24,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 04:30:24,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:30:24,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 04:30:24,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:24,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-09-25 04:30:24,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:30:24,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:24,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:24,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:24,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:24,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:24,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:24,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:30:24,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:24,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:24,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:24,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:24,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:24,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:24,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:24,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 04:30:24,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 04:30:24,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:24,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:24,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 04:30:24,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:24,691 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:24,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401599451] [2020-09-25 04:30:24,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:24,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:24,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239050764] [2020-09-25 04:30:24,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:24,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:24,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:24,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:24,695 INFO L87 Difference]: Start difference. First operand 1649 states and 2175 transitions. Second operand 5 states. [2020-09-25 04:30:26,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:26,357 INFO L93 Difference]: Finished difference Result 4065 states and 5555 transitions. [2020-09-25 04:30:26,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:26,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-09-25 04:30:26,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:26,374 INFO L225 Difference]: With dead ends: 4065 [2020-09-25 04:30:26,375 INFO L226 Difference]: Without dead ends: 2431 [2020-09-25 04:30:26,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:26,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2020-09-25 04:30:26,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1959. [2020-09-25 04:30:26,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2020-09-25 04:30:26,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2539 transitions. [2020-09-25 04:30:26,470 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2539 transitions. Word has length 194 [2020-09-25 04:30:26,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:26,471 INFO L479 AbstractCegarLoop]: Abstraction has 1959 states and 2539 transitions. [2020-09-25 04:30:26,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:26,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2539 transitions. [2020-09-25 04:30:26,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 04:30:26,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:26,476 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:30:26,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:30:26,476 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:26,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:26,477 INFO L82 PathProgramCache]: Analyzing trace with hash 638713511, now seen corresponding path program 1 times [2020-09-25 04:30:26,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:26,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569424464] [2020-09-25 04:30:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:26,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:26,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:26,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:27,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:30,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:30,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:31,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 04:30:31,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:30:31,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 04:30:31,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:31,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:31,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:31,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 167 [2020-09-25 04:30:31,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:30:31,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:31,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:31,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:31,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:31,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:31,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:30:31,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:31,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:31,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:31,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:31,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:31,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:31,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:31,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:31,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:31,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 04:30:31,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:31,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 04:30:31,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:31,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:31,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 04:30:31,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:31,922 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:31,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569424464] [2020-09-25 04:30:31,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:31,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:31,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661631161] [2020-09-25 04:30:31,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:31,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:31,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:31,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:31,925 INFO L87 Difference]: Start difference. First operand 1959 states and 2539 transitions. Second operand 5 states. [2020-09-25 04:30:33,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:33,913 INFO L93 Difference]: Finished difference Result 4541 states and 6113 transitions. [2020-09-25 04:30:33,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:33,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-09-25 04:30:33,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:33,929 INFO L225 Difference]: With dead ends: 4541 [2020-09-25 04:30:33,929 INFO L226 Difference]: Without dead ends: 2597 [2020-09-25 04:30:33,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:33,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2020-09-25 04:30:34,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2417. [2020-09-25 04:30:34,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2417 states. [2020-09-25 04:30:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3100 transitions. [2020-09-25 04:30:34,023 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3100 transitions. Word has length 199 [2020-09-25 04:30:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:34,024 INFO L479 AbstractCegarLoop]: Abstraction has 2417 states and 3100 transitions. [2020-09-25 04:30:34,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3100 transitions. [2020-09-25 04:30:34,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-25 04:30:34,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:34,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:30:34,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:30:34,034 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:34,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:34,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1194311889, now seen corresponding path program 1 times [2020-09-25 04:30:34,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:34,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955293600] [2020-09-25 04:30:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:34,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:34,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:34,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:36,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:36,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:39,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:39,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-09-25 04:30:39,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:30:39,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:30:39,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:39,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:39,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:39,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:30:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 04:30:39,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:39,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:39,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:39,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:39,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:39,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:39,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:30:39,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:39,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:39,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:39,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:39,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:39,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:39,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:30:39,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:39,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 04:30:39,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:39,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:30:39,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:39,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 04:30:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:39,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:39,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:39,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 04:30:39,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:39,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 04:30:39,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:39,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 04:30:39,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:39,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955293600] [2020-09-25 04:30:39,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:39,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:39,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294645729] [2020-09-25 04:30:39,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:39,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:39,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:39,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:39,637 INFO L87 Difference]: Start difference. First operand 2417 states and 3100 transitions. Second operand 7 states. [2020-09-25 04:30:42,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:42,363 INFO L93 Difference]: Finished difference Result 6037 states and 8246 transitions. [2020-09-25 04:30:42,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:30:42,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-09-25 04:30:42,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:42,385 INFO L225 Difference]: With dead ends: 6037 [2020-09-25 04:30:42,386 INFO L226 Difference]: Without dead ends: 3635 [2020-09-25 04:30:42,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:30:42,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2020-09-25 04:30:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3042. [2020-09-25 04:30:42,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3042 states. [2020-09-25 04:30:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 3850 transitions. [2020-09-25 04:30:42,509 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 3850 transitions. Word has length 264 [2020-09-25 04:30:42,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:42,510 INFO L479 AbstractCegarLoop]: Abstraction has 3042 states and 3850 transitions. [2020-09-25 04:30:42,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:42,510 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 3850 transitions. [2020-09-25 04:30:42,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-09-25 04:30:42,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:42,522 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:30:42,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:30:42,523 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:42,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:42,523 INFO L82 PathProgramCache]: Analyzing trace with hash -717885772, now seen corresponding path program 1 times [2020-09-25 04:30:42,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:42,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712949236] [2020-09-25 04:30:42,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:42,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:42,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:42,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:43,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:43,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking...