/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/Problem17_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:01:58,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:01:58,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:01:58,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:01:58,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:01:58,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:01:58,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:01:58,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:01:58,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:01:58,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:01:58,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:01:58,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:01:58,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:01:58,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:01:58,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:01:58,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:01:58,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:01:58,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:01:58,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:01:58,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:01:58,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:01:58,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:01:58,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:01:58,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:01:58,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:01:58,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:01:58,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:01:58,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:01:58,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:01:58,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:01:58,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:01:58,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:01:58,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:01:58,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:01:58,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:01:58,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:01:58,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:01:58,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:01:58,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:01:58,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:01:58,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:01:58,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:01:58,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:01:58,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:01:58,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:01:58,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:01:58,182 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:01:58,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:01:58,183 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:01:58,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:01:58,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:01:58,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:01:58,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:01:58,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:01:58,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:01:58,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:01:58,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:01:58,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:01:58,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:01:58,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:01:58,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:01:58,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:01:58,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:01:58,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:01:58,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:01:58,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:01:58,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:01:58,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:01:58,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:01:58,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:01:58,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:01:58,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:01:58,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:01:58,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:01:58,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:01:58,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:01:58,525 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:01:58,526 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label30.c [2020-10-14 04:01:58,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8028f03a5/86936538faf64d1f9f4b2585cdb769b7/FLAG1aa44f0ad [2020-10-14 04:01:59,285 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:01:59,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label30.c [2020-10-14 04:01:59,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8028f03a5/86936538faf64d1f9f4b2585cdb769b7/FLAG1aa44f0ad [2020-10-14 04:01:59,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8028f03a5/86936538faf64d1f9f4b2585cdb769b7 [2020-10-14 04:01:59,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:01:59,449 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:01:59,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:01:59,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:01:59,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:01:59,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:01:59" (1/1) ... [2020-10-14 04:01:59,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0865a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:01:59, skipping insertion in model container [2020-10-14 04:01:59,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:01:59" (1/1) ... [2020-10-14 04:01:59,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:01:59,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:02:01,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:02:01,058 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:02:01,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:02:01,562 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:02:01,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:01 WrapperNode [2020-10-14 04:02:01,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:02:01,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:02:01,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:02:01,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:02:01,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:01" (1/1) ... [2020-10-14 04:02:01,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:01" (1/1) ... [2020-10-14 04:02:01,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:01" (1/1) ... [2020-10-14 04:02:01,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:01" (1/1) ... [2020-10-14 04:02:01,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:01" (1/1) ... [2020-10-14 04:02:01,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:01" (1/1) ... [2020-10-14 04:02:01,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:01" (1/1) ... [2020-10-14 04:02:01,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:02:01,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:02:01,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:02:01,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:02:01,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:01" (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 04:02:01,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:02:01,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:02:01,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:02:01,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:02:01,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:02:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:02:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:02:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:02:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:02:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:02:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:02:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:02:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:02:11,342 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:02:11,343 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:02:11,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:02:11 BoogieIcfgContainer [2020-10-14 04:02:11,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:02:11,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:02:11,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:02:11,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:02:11,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:01:59" (1/3) ... [2020-10-14 04:02:11,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f10931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:02:11, skipping insertion in model container [2020-10-14 04:02:11,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:02:01" (2/3) ... [2020-10-14 04:02:11,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f10931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:02:11, skipping insertion in model container [2020-10-14 04:02:11,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:02:11" (3/3) ... [2020-10-14 04:02:11,373 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label30.c [2020-10-14 04:02:11,386 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:02:11,398 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:02:11,415 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:02:11,447 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:02:11,448 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:02:11,448 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:02:11,448 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:02:11,448 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:02:11,448 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:02:11,448 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:02:11,526 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:02:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:02:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:02:11,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:11,582 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] [2020-10-14 04:02:11,582 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:11,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:11,589 INFO L82 PathProgramCache]: Analyzing trace with hash 993587001, now seen corresponding path program 1 times [2020-10-14 04:02:11,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:11,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127956885] [2020-10-14 04:02:11,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:11,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:12,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:12,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:02:12,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:12,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-14 04:02:12,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:12,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:12,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:02:12,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:02:12,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:02:12,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:02:12,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:12,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:12,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:12,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:12,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:12,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:02:12,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:12,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:02:12,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:02:12,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127956885] [2020-10-14 04:02:12,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:02:12,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:02:12,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652822527] [2020-10-14 04:02:12,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:02:12,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:12,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:02:12,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:02:12,467 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 04:02:27,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:02:27,180 INFO L93 Difference]: Finished difference Result 1716 states and 3126 transitions. [2020-10-14 04:02:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:02:27,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-14 04:02:27,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:02:27,226 INFO L225 Difference]: With dead ends: 1716 [2020-10-14 04:02:27,226 INFO L226 Difference]: Without dead ends: 1034 [2020-10-14 04:02:27,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:02:27,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-10-14 04:02:27,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1008. [2020-10-14 04:02:27,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2020-10-14 04:02:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1705 transitions. [2020-10-14 04:02:27,412 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1705 transitions. Word has length 30 [2020-10-14 04:02:27,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:02:27,413 INFO L479 AbstractCegarLoop]: Abstraction has 1008 states and 1705 transitions. [2020-10-14 04:02:27,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:02:27,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1705 transitions. [2020-10-14 04:02:27,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 04:02:27,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:27,423 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:02:27,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:02:27,423 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:27,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:27,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1482684936, now seen corresponding path program 1 times [2020-10-14 04:02:27,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:27,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413491011] [2020-10-14 04:02:27,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:27,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:27,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:28,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:28,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:02:28,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:02:28,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1053 [2020-10-14 04:02:28,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:28,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:28,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:02:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 04:02:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 04:02:28,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:28,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:28,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:28,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:28,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:28,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:28,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:02:28,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:28,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:02:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:02:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:28,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:02:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:28,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:28,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:28,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:02:28,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 04:02:28,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:28,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:02:28,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:02:28,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413491011] [2020-10-14 04:02:28,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:02:28,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:02:28,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483785681] [2020-10-14 04:02:28,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:02:28,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:28,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:02:28,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:02:28,850 INFO L87 Difference]: Start difference. First operand 1008 states and 1705 transitions. Second operand 6 states. [2020-10-14 04:02:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:02:43,890 INFO L93 Difference]: Finished difference Result 2907 states and 4993 transitions. [2020-10-14 04:02:43,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:02:43,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-14 04:02:43,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:02:43,906 INFO L225 Difference]: With dead ends: 2907 [2020-10-14 04:02:43,907 INFO L226 Difference]: Without dead ends: 1905 [2020-10-14 04:02:43,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:02:43,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2020-10-14 04:02:43,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1890. [2020-10-14 04:02:43,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1890 states. [2020-10-14 04:02:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 3226 transitions. [2020-10-14 04:02:43,981 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 3226 transitions. Word has length 99 [2020-10-14 04:02:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:02:43,983 INFO L479 AbstractCegarLoop]: Abstraction has 1890 states and 3226 transitions. [2020-10-14 04:02:43,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:02:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 3226 transitions. [2020-10-14 04:02:43,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 04:02:43,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:02:43,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:02:43,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:02:43,994 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:02:43,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:02:43,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1852913540, now seen corresponding path program 1 times [2020-10-14 04:02:43,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:02:43,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534220577] [2020-10-14 04:02:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:02:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:44,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:44,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:45,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:45,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:46,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:46,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 04:02:46,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:02:46,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2047 [2020-10-14 04:02:46,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:46,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:02:46,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 04:02:46,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 04:02:46,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:46,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:02:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:46,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:46,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:46,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:02:46,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:46,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:02:46,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:46,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:02:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:46,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:02:46,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:46,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:02:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:02:46,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:02:46,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:02:46,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:02:46,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:02:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 04:02:46,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:02:46,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:02:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:02:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:02:46,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:02:46,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:02:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:02:46,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534220577] [2020-10-14 04:02:46,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:02:46,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:02:46,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912424822] [2020-10-14 04:02:46,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:02:46,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:02:46,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:02:46,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:02:46,352 INFO L87 Difference]: Start difference. First operand 1890 states and 3226 transitions. Second operand 5 states. [2020-10-14 04:03:04,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:04,294 INFO L93 Difference]: Finished difference Result 5586 states and 9695 transitions. [2020-10-14 04:03:04,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:03:04,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-14 04:03:04,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:04,321 INFO L225 Difference]: With dead ends: 5586 [2020-10-14 04:03:04,321 INFO L226 Difference]: Without dead ends: 3702 [2020-10-14 04:03:04,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:03:04,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2020-10-14 04:03:04,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 3684. [2020-10-14 04:03:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3684 states. [2020-10-14 04:03:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 6153 transitions. [2020-10-14 04:03:04,469 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 6153 transitions. Word has length 105 [2020-10-14 04:03:04,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:04,472 INFO L479 AbstractCegarLoop]: Abstraction has 3684 states and 6153 transitions. [2020-10-14 04:03:04,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:03:04,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 6153 transitions. [2020-10-14 04:03:04,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 04:03:04,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:04,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:03:04,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:03:04,485 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:04,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:04,485 INFO L82 PathProgramCache]: Analyzing trace with hash -771762316, now seen corresponding path program 1 times [2020-10-14 04:03:04,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:04,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816619121] [2020-10-14 04:03:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:04,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:05,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:05,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 04:03:05,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:03:05,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 801 [2020-10-14 04:03:05,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:05,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 04:03:05,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 04:03:05,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:05,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:05,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:05,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:05,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:05,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:05,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:03:05,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:05,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:05,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:05,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:05,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:05,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:05,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:05,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:03:05,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:05,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 04:03:05,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:05,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:05,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:05,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:03:05,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:03:05,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816619121] [2020-10-14 04:03:05,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:05,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:03:05,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889025254] [2020-10-14 04:03:05,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:03:05,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:05,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:03:05,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:03:05,594 INFO L87 Difference]: Start difference. First operand 3684 states and 6153 transitions. Second operand 5 states. [2020-10-14 04:03:22,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:22,686 INFO L93 Difference]: Finished difference Result 10939 states and 18583 transitions. [2020-10-14 04:03:22,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:03:22,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-14 04:03:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:22,732 INFO L225 Difference]: With dead ends: 10939 [2020-10-14 04:03:22,732 INFO L226 Difference]: Without dead ends: 7261 [2020-10-14 04:03:22,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:03:22,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7261 states. [2020-10-14 04:03:22,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7261 to 5492. [2020-10-14 04:03:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5492 states. [2020-10-14 04:03:22,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5492 states to 5492 states and 9127 transitions. [2020-10-14 04:03:22,912 INFO L78 Accepts]: Start accepts. Automaton has 5492 states and 9127 transitions. Word has length 109 [2020-10-14 04:03:22,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:22,913 INFO L479 AbstractCegarLoop]: Abstraction has 5492 states and 9127 transitions. [2020-10-14 04:03:22,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:03:22,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5492 states and 9127 transitions. [2020-10-14 04:03:22,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 04:03:22,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:22,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:03:22,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:03:22,916 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:22,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:22,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1656132815, now seen corresponding path program 1 times [2020-10-14 04:03:22,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:22,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009256635] [2020-10-14 04:03:22,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:22,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:23,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:23,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:23,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:26,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:26,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 04:03:26,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:03:26,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3743 [2020-10-14 04:03:26,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:26,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 04:03:26,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 04:03:26,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:26,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:26,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:26,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:26,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:26,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:26,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:03:26,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:26,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:26,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:26,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:26,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:26,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:26,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:26,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 04:03:26,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:26,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 04:03:26,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:26,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:26,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:26,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:03:26,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:03:26,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009256635] [2020-10-14 04:03:26,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:26,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:03:26,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513280019] [2020-10-14 04:03:26,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:03:26,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:26,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:03:26,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:03:26,997 INFO L87 Difference]: Start difference. First operand 5492 states and 9127 transitions. Second operand 5 states. [2020-10-14 04:03:47,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:03:47,255 INFO L93 Difference]: Finished difference Result 12780 states and 21573 transitions. [2020-10-14 04:03:47,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:03:47,257 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-14 04:03:47,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:03:47,297 INFO L225 Difference]: With dead ends: 12780 [2020-10-14 04:03:47,298 INFO L226 Difference]: Without dead ends: 7294 [2020-10-14 04:03:47,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:03:47,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7294 states. [2020-10-14 04:03:47,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7294 to 6400. [2020-10-14 04:03:47,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6400 states. [2020-10-14 04:03:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6400 states to 6400 states and 10619 transitions. [2020-10-14 04:03:47,508 INFO L78 Accepts]: Start accepts. Automaton has 6400 states and 10619 transitions. Word has length 116 [2020-10-14 04:03:47,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:03:47,510 INFO L479 AbstractCegarLoop]: Abstraction has 6400 states and 10619 transitions. [2020-10-14 04:03:47,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:03:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 6400 states and 10619 transitions. [2020-10-14 04:03:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 04:03:47,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:03:47,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:03:47,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:03:47,514 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:03:47,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:03:47,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1479909619, now seen corresponding path program 1 times [2020-10-14 04:03:47,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:03:47,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302790491] [2020-10-14 04:03:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:03:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:47,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:47,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:47,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:48,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:48,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:48,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 04:03:48,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:03:48,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-14 04:03:48,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:48,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:48,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:03:48,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:03:48,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 04:03:48,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:48,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:03:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:48,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:48,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:48,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:03:48,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:48,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:03:48,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:48,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:03:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:48,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:03:48,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:48,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:03:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:03:48,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:03:48,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:03:48,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:03:48,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:03:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 04:03:48,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:03:48,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:03:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:03:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:03:48,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:03:48,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:03:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:03:48,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302790491] [2020-10-14 04:03:48,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:03:48,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:03:48,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131202603] [2020-10-14 04:03:48,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:03:48,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:03:48,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:03:48,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:03:48,881 INFO L87 Difference]: Start difference. First operand 6400 states and 10619 transitions. Second operand 5 states. [2020-10-14 04:04:06,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:04:06,712 INFO L93 Difference]: Finished difference Result 15014 states and 25370 transitions. [2020-10-14 04:04:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:04:06,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-14 04:04:06,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:04:06,748 INFO L225 Difference]: With dead ends: 15014 [2020-10-14 04:04:06,748 INFO L226 Difference]: Without dead ends: 8620 [2020-10-14 04:04:06,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:04:06,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8620 states. [2020-10-14 04:04:06,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8620 to 7710. [2020-10-14 04:04:06,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7710 states. [2020-10-14 04:04:06,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7710 states to 7710 states and 12848 transitions. [2020-10-14 04:04:06,985 INFO L78 Accepts]: Start accepts. Automaton has 7710 states and 12848 transitions. Word has length 118 [2020-10-14 04:04:06,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:04:06,986 INFO L479 AbstractCegarLoop]: Abstraction has 7710 states and 12848 transitions. [2020-10-14 04:04:06,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:04:06,986 INFO L276 IsEmpty]: Start isEmpty. Operand 7710 states and 12848 transitions. [2020-10-14 04:04:06,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 04:04:06,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:06,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:04:06,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:04:06,989 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:06,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:06,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1685860667, now seen corresponding path program 1 times [2020-10-14 04:04:06,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:06,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241475223] [2020-10-14 04:04:06,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:07,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:07,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:07,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:07,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 04:04:07,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:04:07,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-10-14 04:04:07,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:07,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:07,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:04:07,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-14 04:04:07,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 04:04:07,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:07,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:04:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:07,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:07,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:07,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:04:07,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:07,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:04:07,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:07,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:07,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:04:07,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:07,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:04:07,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:07,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:04:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:07,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:08,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:08,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 04:04:08,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:08,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 04:04:08,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:08,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:04:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 04:04:08,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:04:08,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241475223] [2020-10-14 04:04:08,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:04:08,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:04:08,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251285859] [2020-10-14 04:04:08,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:04:08,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:04:08,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:04:08,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:04:08,052 INFO L87 Difference]: Start difference. First operand 7710 states and 12848 transitions. Second operand 5 states. [2020-10-14 04:04:29,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:04:29,561 INFO L93 Difference]: Finished difference Result 22879 states and 39048 transitions. [2020-10-14 04:04:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:04:29,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-14 04:04:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:04:29,635 INFO L225 Difference]: With dead ends: 22879 [2020-10-14 04:04:29,635 INFO L226 Difference]: Without dead ends: 15175 [2020-10-14 04:04:29,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:04:29,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15175 states. [2020-10-14 04:04:29,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15175 to 13415. [2020-10-14 04:04:29,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13415 states. [2020-10-14 04:04:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13415 states to 13415 states and 20027 transitions. [2020-10-14 04:04:30,019 INFO L78 Accepts]: Start accepts. Automaton has 13415 states and 20027 transitions. Word has length 122 [2020-10-14 04:04:30,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:04:30,020 INFO L479 AbstractCegarLoop]: Abstraction has 13415 states and 20027 transitions. [2020-10-14 04:04:30,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:04:30,020 INFO L276 IsEmpty]: Start isEmpty. Operand 13415 states and 20027 transitions. [2020-10-14 04:04:30,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 04:04:30,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:30,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:04:30,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:04:30,024 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:30,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1268495056, now seen corresponding path program 1 times [2020-10-14 04:04:30,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:30,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213980347] [2020-10-14 04:04:30,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:30,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:30,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:30,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:30,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 04:04:30,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:04:30,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-14 04:04:30,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:30,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:30,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:04:30,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 04:04:30,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 04:04:30,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:04:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:31,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:31,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:31,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:04:31,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:31,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:04:31,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:31,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:04:31,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:31,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:04:31,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:31,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:04:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:31,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:31,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:31,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:04:31,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:31,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 04:04:31,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:31,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:31,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:04:31,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:31,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 04:04:31,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:31,266 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:04:31,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213980347] [2020-10-14 04:04:31,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:04:31,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:04:31,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835093311] [2020-10-14 04:04:31,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:04:31,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:04:31,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:04:31,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:04:31,269 INFO L87 Difference]: Start difference. First operand 13415 states and 20027 transitions. Second operand 5 states. [2020-10-14 04:04:47,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:04:47,837 INFO L93 Difference]: Finished difference Result 31232 states and 48078 transitions. [2020-10-14 04:04:47,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:04:47,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-14 04:04:47,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:04:47,925 INFO L225 Difference]: With dead ends: 31232 [2020-10-14 04:04:47,925 INFO L226 Difference]: Without dead ends: 17823 [2020-10-14 04:04:47,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:04:47,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17823 states. [2020-10-14 04:04:48,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17823 to 16498. [2020-10-14 04:04:48,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16498 states. [2020-10-14 04:04:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16498 states to 16498 states and 23872 transitions. [2020-10-14 04:04:48,366 INFO L78 Accepts]: Start accepts. Automaton has 16498 states and 23872 transitions. Word has length 127 [2020-10-14 04:04:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:04:48,367 INFO L479 AbstractCegarLoop]: Abstraction has 16498 states and 23872 transitions. [2020-10-14 04:04:48,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:04:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 16498 states and 23872 transitions. [2020-10-14 04:04:48,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 04:04:48,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:04:48,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:04:48,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:04:48,376 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:04:48,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:04:48,376 INFO L82 PathProgramCache]: Analyzing trace with hash 2142398435, now seen corresponding path program 1 times [2020-10-14 04:04:48,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:04:48,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861907777] [2020-10-14 04:04:48,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:04:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:48,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:48,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:48,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 04:04:48,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:48,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-14 04:04:48,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:48,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:04:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:04:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 04:04:48,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:49,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:04:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:49,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:49,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:49,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:04:49,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:49,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:04:49,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:49,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:04:49,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:04:49,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:04:49,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:04:49,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:04:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:04:49,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:04:49,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:04:49,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 04:04:49,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:04:49,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-14 04:04:49,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:04:49,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:04:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:04:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:04:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 04:04:49,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:04:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:04:49,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861907777] [2020-10-14 04:04:49,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:04:49,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 04:04:49,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012013502] [2020-10-14 04:04:49,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:04:49,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:04:49,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:04:49,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:04:49,704 INFO L87 Difference]: Start difference. First operand 16498 states and 23872 transitions. Second operand 8 states. [2020-10-14 04:05:25,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:05:25,839 INFO L93 Difference]: Finished difference Result 47941 states and 71057 transitions. [2020-10-14 04:05:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:05:25,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2020-10-14 04:05:25,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:05:25,920 INFO L225 Difference]: With dead ends: 47941 [2020-10-14 04:05:25,920 INFO L226 Difference]: Without dead ends: 20855 [2020-10-14 04:05:25,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:05:25,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20855 states. [2020-10-14 04:05:26,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20855 to 18242. [2020-10-14 04:05:26,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18242 states. [2020-10-14 04:05:26,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18242 states to 18242 states and 22707 transitions. [2020-10-14 04:05:26,447 INFO L78 Accepts]: Start accepts. Automaton has 18242 states and 22707 transitions. Word has length 171 [2020-10-14 04:05:26,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:05:26,448 INFO L479 AbstractCegarLoop]: Abstraction has 18242 states and 22707 transitions. [2020-10-14 04:05:26,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:05:26,448 INFO L276 IsEmpty]: Start isEmpty. Operand 18242 states and 22707 transitions. [2020-10-14 04:05:26,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 04:05:26,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:05:26,460 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:05:26,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:05:26,460 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:05:26,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:05:26,461 INFO L82 PathProgramCache]: Analyzing trace with hash 215261976, now seen corresponding path program 1 times [2020-10-14 04:05:26,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:05:26,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342298552] [2020-10-14 04:05:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:05:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:26,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:28,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:28,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-14 04:05:28,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:28,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2087 [2020-10-14 04:05:28,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:28,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:28,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:05:28,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:05:28,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-14 04:05:28,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:28,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:28,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:28,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:28,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:28,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:28,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:05:28,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:28,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:05:28,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:28,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:05:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:29,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:29,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:05:29,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:29,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-14 04:05:29,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:29,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:05:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:05:29,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 04:05:29,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:29,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:05:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:29,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:29,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:29,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 04:05:29,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:29,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-14 04:05:29,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:29,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:29,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:29,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:05:29,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 04:05:29,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 50 proven. 82 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:05:29,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342298552] [2020-10-14 04:05:29,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:05:29,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:05:29,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359197387] [2020-10-14 04:05:29,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:05:29,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:29,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:05:29,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:05:29,777 INFO L87 Difference]: Start difference. First operand 18242 states and 22707 transitions. Second operand 10 states. [2020-10-14 04:05:59,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:05:59,509 INFO L93 Difference]: Finished difference Result 47403 states and 61771 transitions. [2020-10-14 04:05:59,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:05:59,512 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 258 [2020-10-14 04:05:59,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:05:59,599 INFO L225 Difference]: With dead ends: 47403 [2020-10-14 04:05:59,599 INFO L226 Difference]: Without dead ends: 28283 [2020-10-14 04:05:59,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:05:59,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28283 states. [2020-10-14 04:06:00,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28283 to 28149. [2020-10-14 04:06:00,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28149 states. [2020-10-14 04:06:00,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28149 states to 28149 states and 36502 transitions. [2020-10-14 04:06:00,264 INFO L78 Accepts]: Start accepts. Automaton has 28149 states and 36502 transitions. Word has length 258 [2020-10-14 04:06:00,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:06:00,265 INFO L479 AbstractCegarLoop]: Abstraction has 28149 states and 36502 transitions. [2020-10-14 04:06:00,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:06:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 28149 states and 36502 transitions. [2020-10-14 04:06:00,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-14 04:06:00,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:06:00,277 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:06:00,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:06:00,277 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:06:00,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:06:00,278 INFO L82 PathProgramCache]: Analyzing trace with hash -218161953, now seen corresponding path program 1 times [2020-10-14 04:06:00,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:06:00,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905624264] [2020-10-14 04:06:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:06:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:00,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:00,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:01,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:02,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:02,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:02,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-14 04:06:02,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:06:02,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2522 [2020-10-14 04:06:02,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:02,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:02,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:06:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:06:02,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 04:06:02,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:03,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:06:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:03,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:03,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:03,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:06:03,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:03,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:06:03,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:03,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:03,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:06:03,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:03,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:06:03,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:03,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:06:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:03,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:03,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:03,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:06:03,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:03,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 04:06:03,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:03,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:06:03,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:03,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:06:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:03,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:03,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:03,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 04:06:03,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:03,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-14 04:06:03,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:03,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:03,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:06:03,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:06:03,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 04:06:03,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:06:03,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905624264] [2020-10-14 04:06:03,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:06:03,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:06:03,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25572843] [2020-10-14 04:06:03,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:06:03,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:06:03,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:06:03,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:06:03,753 INFO L87 Difference]: Start difference. First operand 28149 states and 36502 transitions. Second operand 7 states.