/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/Problem15_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:23:46,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:23:46,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:23:46,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:23:46,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:23:46,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:23:46,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:23:46,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:23:46,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:23:46,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:23:46,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:23:46,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:23:46,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:23:46,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:23:46,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:23:46,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:23:46,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:23:46,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:23:46,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:23:46,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:23:46,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:23:46,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:23:46,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:23:46,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:23:46,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:23:46,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:23:46,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:23:46,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:23:46,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:23:46,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:23:46,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:23:46,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:23:46,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:23:46,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:23:46,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:23:46,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:23:46,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:23:46,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:23:46,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:23:46,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:23:46,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:23:46,114 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 03:23:46,151 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:23:46,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:23:46,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:23:46,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:23:46,154 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:23:46,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:23:46,155 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:23:46,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:23:46,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:23:46,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:23:46,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:23:46,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:23:46,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:23:46,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:23:46,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:23:46,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:23:46,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:23:46,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:23:46,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:23:46,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:23:46,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:23:46,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:23:46,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:23:46,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:23:46,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:23:46,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:23:46,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:23:46,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:23:46,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:23:46,160 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 03:23:46,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:23:46,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:23:46,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:23:46,467 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:23:46,468 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:23:46,468 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label05.c [2020-10-14 03:23:46,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/295f972aa/8c8743d9805947a1bea5c1d59e2065db/FLAG872e990ab [2020-10-14 03:23:47,135 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:23:47,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label05.c [2020-10-14 03:23:47,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/295f972aa/8c8743d9805947a1bea5c1d59e2065db/FLAG872e990ab [2020-10-14 03:23:47,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/295f972aa/8c8743d9805947a1bea5c1d59e2065db [2020-10-14 03:23:47,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:23:47,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:23:47,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:23:47,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:23:47,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:23:47,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:23:47" (1/1) ... [2020-10-14 03:23:47,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43fb007c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:47, skipping insertion in model container [2020-10-14 03:23:47,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:23:47" (1/1) ... [2020-10-14 03:23:47,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:23:47,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:23:48,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:23:48,503 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:23:48,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:23:48,820 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:23:48,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:48 WrapperNode [2020-10-14 03:23:48,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:23:48,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:23:48,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:23:48,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:23:48,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:48" (1/1) ... [2020-10-14 03:23:48,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:48" (1/1) ... [2020-10-14 03:23:48,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:48" (1/1) ... [2020-10-14 03:23:48,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:48" (1/1) ... [2020-10-14 03:23:48,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:48" (1/1) ... [2020-10-14 03:23:48,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:48" (1/1) ... [2020-10-14 03:23:48,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:48" (1/1) ... [2020-10-14 03:23:48,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:23:48,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:23:48,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:23:48,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:23:49,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:48" (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 03:23:49,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:23:49,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:23:49,063 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:23:49,063 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:23:49,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:23:49,063 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:23:49,063 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:23:49,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:23:49,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:23:49,064 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:23:49,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:23:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:23:49,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:23:55,318 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:23:55,319 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:23:55,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:23:55 BoogieIcfgContainer [2020-10-14 03:23:55,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:23:55,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:23:55,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:23:55,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:23:55,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:23:47" (1/3) ... [2020-10-14 03:23:55,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39307154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:23:55, skipping insertion in model container [2020-10-14 03:23:55,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:23:48" (2/3) ... [2020-10-14 03:23:55,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39307154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:23:55, skipping insertion in model container [2020-10-14 03:23:55,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:23:55" (3/3) ... [2020-10-14 03:23:55,344 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label05.c [2020-10-14 03:23:55,357 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:23:55,371 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:23:55,385 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:23:55,417 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:23:55,417 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:23:55,417 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:23:55,417 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:23:55,418 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:23:55,418 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:23:55,418 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:23:55,418 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:23:55,456 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:23:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 03:23:55,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:23:55,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:23:55,475 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:23:55,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:23:55,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1317057632, now seen corresponding path program 1 times [2020-10-14 03:23:55,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:23:55,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664583825] [2020-10-14 03:23:55,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:23:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:55,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:56,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:56,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 03:23:56,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:56,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-14 03:23:56,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:56,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:56,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:23:56,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:23:56,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:23:56,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:23:56,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:23:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:23:56,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:23:56,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:23:56,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:23:56,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:23:56,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:23:56,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:23:56,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:23:56,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:23:56,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:23:56,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:23:56,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 50 [2020-10-14 03:23:56,395 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 03:23:56,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664583825] [2020-10-14 03:23:56,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:23:56,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:23:56,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291067882] [2020-10-14 03:23:56,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:23:56,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:23:56,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:23:56,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:23:56,421 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:24:03,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:03,963 INFO L93 Difference]: Finished difference Result 1240 states and 2220 transitions. [2020-10-14 03:24:03,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:03,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-14 03:24:03,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:03,987 INFO L225 Difference]: With dead ends: 1240 [2020-10-14 03:24:03,987 INFO L226 Difference]: Without dead ends: 724 [2020-10-14 03:24:03,999 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 03:24:04,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-14 03:24:04,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 712. [2020-10-14 03:24:04,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-14 03:24:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1129 transitions. [2020-10-14 03:24:04,093 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1129 transitions. Word has length 70 [2020-10-14 03:24:04,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:04,094 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1129 transitions. [2020-10-14 03:24:04,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:24:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1129 transitions. [2020-10-14 03:24:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 03:24:04,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:04,102 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:24:04,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:24:04,103 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:04,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:04,103 INFO L82 PathProgramCache]: Analyzing trace with hash 717900603, now seen corresponding path program 1 times [2020-10-14 03:24:04,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:04,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905799866] [2020-10-14 03:24:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:04,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:04,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:05,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:05,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:05,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:05,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 03:24:05,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:24:05,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1829 [2020-10-14 03:24:05,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:05,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:05,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:05,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 03:24:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:24:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:24:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:06,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:06,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:06,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:06,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:06,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:24:06,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:06,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:06,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:06,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:06,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:06,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:06,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:24:06,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 03:24:06,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:06,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 03:24:06,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:06,317 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:06,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905799866] [2020-10-14 03:24:06,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:06,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:06,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638363002] [2020-10-14 03:24:06,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:06,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:06,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:06,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:06,321 INFO L87 Difference]: Start difference. First operand 712 states and 1129 transitions. Second operand 5 states. [2020-10-14 03:24:13,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:13,972 INFO L93 Difference]: Finished difference Result 2052 states and 3298 transitions. [2020-10-14 03:24:13,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:13,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 03:24:13,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:13,984 INFO L225 Difference]: With dead ends: 2052 [2020-10-14 03:24:13,984 INFO L226 Difference]: Without dead ends: 1346 [2020-10-14 03:24:13,987 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 03:24:13,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2020-10-14 03:24:14,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1340. [2020-10-14 03:24:14,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2020-10-14 03:24:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1864 transitions. [2020-10-14 03:24:14,048 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1864 transitions. Word has length 142 [2020-10-14 03:24:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:14,049 INFO L479 AbstractCegarLoop]: Abstraction has 1340 states and 1864 transitions. [2020-10-14 03:24:14,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1864 transitions. [2020-10-14 03:24:14,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 03:24:14,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:14,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:14,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:24:14,055 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:14,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:14,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1661095937, now seen corresponding path program 1 times [2020-10-14 03:24:14,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:14,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550242975] [2020-10-14 03:24:14,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:14,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:14,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:16,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:16,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 03:24:16,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:24:16,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2387 [2020-10-14 03:24:16,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:16,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 03:24:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:24:16,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:16,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:16,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:16,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:16,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:16,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:16,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:24:16,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:16,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:16,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:16,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:16,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:16,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:16,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:24:16,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:16,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 03:24:16,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:16,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:24:16,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:16,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550242975] [2020-10-14 03:24:16,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:16,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:16,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753376398] [2020-10-14 03:24:16,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:16,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:16,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:16,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:16,728 INFO L87 Difference]: Start difference. First operand 1340 states and 1864 transitions. Second operand 5 states. [2020-10-14 03:24:25,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:25,442 INFO L93 Difference]: Finished difference Result 3307 states and 4785 transitions. [2020-10-14 03:24:25,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:25,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-14 03:24:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:25,456 INFO L225 Difference]: With dead ends: 3307 [2020-10-14 03:24:25,456 INFO L226 Difference]: Without dead ends: 1973 [2020-10-14 03:24:25,460 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 03:24:25,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2020-10-14 03:24:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1968. [2020-10-14 03:24:25,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1968 states. [2020-10-14 03:24:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2597 transitions. [2020-10-14 03:24:25,518 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2597 transitions. Word has length 153 [2020-10-14 03:24:25,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:25,519 INFO L479 AbstractCegarLoop]: Abstraction has 1968 states and 2597 transitions. [2020-10-14 03:24:25,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2597 transitions. [2020-10-14 03:24:25,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 03:24:25,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:25,523 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:24:25,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:24:25,524 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:25,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:25,524 INFO L82 PathProgramCache]: Analyzing trace with hash -935133604, now seen corresponding path program 1 times [2020-10-14 03:24:25,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:25,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601467820] [2020-10-14 03:24:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:25,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:25,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:26,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:26,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:26,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 03:24:26,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:24:26,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1299 [2020-10-14 03:24:26,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:26,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 03:24:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:24:26,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:26,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:26,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:26,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:26,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:26,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:26,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:24:26,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:26,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:26,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:26,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:27,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:27,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:27,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:24:27,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:27,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 03:24:27,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:27,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 03:24:27,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:27,174 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:27,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601467820] [2020-10-14 03:24:27,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:27,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:27,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524357018] [2020-10-14 03:24:27,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:27,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:27,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:27,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:27,179 INFO L87 Difference]: Start difference. First operand 1968 states and 2597 transitions. Second operand 5 states. [2020-10-14 03:24:40,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:40,913 INFO L93 Difference]: Finished difference Result 5797 states and 7763 transitions. [2020-10-14 03:24:40,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:40,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-14 03:24:40,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:40,939 INFO L225 Difference]: With dead ends: 5797 [2020-10-14 03:24:40,941 INFO L226 Difference]: Without dead ends: 3835 [2020-10-14 03:24:40,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 03:24:40,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2020-10-14 03:24:41,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 3831. [2020-10-14 03:24:41,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3831 states. [2020-10-14 03:24:41,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3831 states to 3831 states and 4987 transitions. [2020-10-14 03:24:41,069 INFO L78 Accepts]: Start accepts. Automaton has 3831 states and 4987 transitions. Word has length 193 [2020-10-14 03:24:41,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:41,070 INFO L479 AbstractCegarLoop]: Abstraction has 3831 states and 4987 transitions. [2020-10-14 03:24:41,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:41,070 INFO L276 IsEmpty]: Start isEmpty. Operand 3831 states and 4987 transitions. [2020-10-14 03:24:41,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 03:24:41,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:41,076 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:24:41,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:24:41,076 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:41,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:41,077 INFO L82 PathProgramCache]: Analyzing trace with hash -521913239, now seen corresponding path program 1 times [2020-10-14 03:24:41,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:41,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057550196] [2020-10-14 03:24:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:41,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:41,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:42,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:42,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 03:24:42,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:24:42,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1147 [2020-10-14 03:24:42,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:42,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:42,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:42,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 03:24:42,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:24:42,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:42,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:42,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:42,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:42,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:42,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:42,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:24:42,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:42,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:42,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:42,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:42,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:42,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:42,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:42,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:42,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:24:42,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:42,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 03:24:42,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:42,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:42,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:24:42,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:42,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057550196] [2020-10-14 03:24:42,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:42,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:42,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912456069] [2020-10-14 03:24:42,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:42,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:42,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:42,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:42,640 INFO L87 Difference]: Start difference. First operand 3831 states and 4987 transitions. Second operand 5 states. [2020-10-14 03:24:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:49,179 INFO L93 Difference]: Finished difference Result 8901 states and 11832 transitions. [2020-10-14 03:24:49,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:49,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-14 03:24:49,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:49,208 INFO L225 Difference]: With dead ends: 8901 [2020-10-14 03:24:49,208 INFO L226 Difference]: Without dead ends: 5076 [2020-10-14 03:24:49,218 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 03:24:49,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5076 states. [2020-10-14 03:24:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5076 to 5069. [2020-10-14 03:24:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5069 states. [2020-10-14 03:24:49,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 6399 transitions. [2020-10-14 03:24:49,348 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 6399 transitions. Word has length 199 [2020-10-14 03:24:49,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:49,349 INFO L479 AbstractCegarLoop]: Abstraction has 5069 states and 6399 transitions. [2020-10-14 03:24:49,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:49,349 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 6399 transitions. [2020-10-14 03:24:49,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 03:24:49,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:49,355 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:49,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:24:49,355 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:49,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:49,356 INFO L82 PathProgramCache]: Analyzing trace with hash 20280173, now seen corresponding path program 1 times [2020-10-14 03:24:49,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:49,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050227224] [2020-10-14 03:24:49,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:49,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:50,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:51,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:51,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 03:24:51,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:24:51,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1789 [2020-10-14 03:24:51,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:51,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:51,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:51,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 03:24:51,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:24:51,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:51,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:51,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:51,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:51,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:51,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:51,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:24:51,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:51,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:51,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:24:51,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:51,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:51,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:51,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:24:51,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:51,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 03:24:51,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:51,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:51,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 03:24:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:51,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050227224] [2020-10-14 03:24:51,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:51,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:24:51,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036668069] [2020-10-14 03:24:51,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:24:51,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:51,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:24:51,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:24:51,640 INFO L87 Difference]: Start difference. First operand 5069 states and 6399 transitions. Second operand 6 states. [2020-10-14 03:25:01,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:01,305 INFO L93 Difference]: Finished difference Result 12315 states and 16084 transitions. [2020-10-14 03:25:01,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:25:01,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2020-10-14 03:25:01,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:01,337 INFO L225 Difference]: With dead ends: 12315 [2020-10-14 03:25:01,337 INFO L226 Difference]: Without dead ends: 7252 [2020-10-14 03:25:01,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:25:01,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7252 states. [2020-10-14 03:25:01,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7252 to 7245. [2020-10-14 03:25:01,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7245 states. [2020-10-14 03:25:01,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7245 states to 7245 states and 9282 transitions. [2020-10-14 03:25:01,533 INFO L78 Accepts]: Start accepts. Automaton has 7245 states and 9282 transitions. Word has length 213 [2020-10-14 03:25:01,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:01,533 INFO L479 AbstractCegarLoop]: Abstraction has 7245 states and 9282 transitions. [2020-10-14 03:25:01,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:25:01,534 INFO L276 IsEmpty]: Start isEmpty. Operand 7245 states and 9282 transitions. [2020-10-14 03:25:01,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-14 03:25:01,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:01,548 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:25:01,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:25:01,549 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:01,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:01,549 INFO L82 PathProgramCache]: Analyzing trace with hash -890158780, now seen corresponding path program 1 times [2020-10-14 03:25:01,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:01,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250015398] [2020-10-14 03:25:01,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:01,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:01,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:01,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:02,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:06,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:06,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-14 03:25:06,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:25:06,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 03:25:06,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:06,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 03:25:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 03:25:06,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:06,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:06,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:06,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:06,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:06,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:06,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:25:06,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:06,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:06,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:06,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:06,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:06,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:06,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:25:06,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:06,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 03:25:06,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:06,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:25:06,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:06,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 03:25:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:06,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:07,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:07,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 03:25:07,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 03:25:07,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:07,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:07,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:07,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:07,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 03:25:07,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:07,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250015398] [2020-10-14 03:25:07,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:07,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:07,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581662842] [2020-10-14 03:25:07,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:07,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:07,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:07,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:07,292 INFO L87 Difference]: Start difference. First operand 7245 states and 9282 transitions. Second operand 7 states. [2020-10-14 03:25:20,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:20,990 INFO L93 Difference]: Finished difference Result 20879 states and 28074 transitions. [2020-10-14 03:25:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:25:20,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2020-10-14 03:25:20,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:21,053 INFO L225 Difference]: With dead ends: 20879 [2020-10-14 03:25:21,054 INFO L226 Difference]: Without dead ends: 13640 [2020-10-14 03:25:21,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:21,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13640 states. [2020-10-14 03:25:21,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13640 to 13186. [2020-10-14 03:25:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13186 states. [2020-10-14 03:25:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13186 states to 13186 states and 16731 transitions. [2020-10-14 03:25:21,371 INFO L78 Accepts]: Start accepts. Automaton has 13186 states and 16731 transitions. Word has length 284 [2020-10-14 03:25:21,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:21,372 INFO L479 AbstractCegarLoop]: Abstraction has 13186 states and 16731 transitions. [2020-10-14 03:25:21,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:21,373 INFO L276 IsEmpty]: Start isEmpty. Operand 13186 states and 16731 transitions. [2020-10-14 03:25:21,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-14 03:25:21,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:21,389 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:25:21,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:25:21,389 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:21,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:21,390 INFO L82 PathProgramCache]: Analyzing trace with hash 841677513, now seen corresponding path program 1 times [2020-10-14 03:25:21,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:21,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652204054] [2020-10-14 03:25:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:21,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:21,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:23,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:23,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:26,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:26,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-14 03:25:26,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:25:26,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 03:25:26,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:26,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 03:25:26,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 03:25:26,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:26,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:26,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:26,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:26,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:26,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:26,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:25:26,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:26,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:26,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:26,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:26,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:26,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:26,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:25:26,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:26,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 03:25:26,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:26,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 03:25:26,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:26,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 03:25:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:26,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:26,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:26,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 03:25:26,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:26,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 03:25:26,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:26,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:26,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 03:25:26,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:27,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652204054] [2020-10-14 03:25:27,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:27,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:27,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225196906] [2020-10-14 03:25:27,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:27,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:27,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:27,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:27,073 INFO L87 Difference]: Start difference. First operand 13186 states and 16731 transitions. Second operand 7 states. [2020-10-14 03:25:39,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:39,729 INFO L93 Difference]: Finished difference Result 29079 states and 37587 transitions. [2020-10-14 03:25:39,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:25:39,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 292 [2020-10-14 03:25:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:39,805 INFO L225 Difference]: With dead ends: 29079 [2020-10-14 03:25:39,805 INFO L226 Difference]: Without dead ends: 18678 [2020-10-14 03:25:39,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:39,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18678 states. [2020-10-14 03:25:40,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18678 to 18162. [2020-10-14 03:25:40,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18162 states. [2020-10-14 03:25:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18162 states to 18162 states and 22479 transitions. [2020-10-14 03:25:40,314 INFO L78 Accepts]: Start accepts. Automaton has 18162 states and 22479 transitions. Word has length 292 [2020-10-14 03:25:40,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:40,314 INFO L479 AbstractCegarLoop]: Abstraction has 18162 states and 22479 transitions. [2020-10-14 03:25:40,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:40,315 INFO L276 IsEmpty]: Start isEmpty. Operand 18162 states and 22479 transitions. [2020-10-14 03:25:40,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-14 03:25:40,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:40,343 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:25:40,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:25:40,343 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:40,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:40,344 INFO L82 PathProgramCache]: Analyzing trace with hash 552722697, now seen corresponding path program 1 times [2020-10-14 03:25:40,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:40,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040659712] [2020-10-14 03:25:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:40,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:40,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:40,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:41,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:43,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:44,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:45,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:45,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-14 03:25:45,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:25:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 03:25:45,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:45,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 03:25:45,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 03:25:45,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:45,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:45,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:45,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:45,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:45,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:45,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:25:45,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:45,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:45,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:45,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:45,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:45,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:45,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:45,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:25:45,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:45,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 03:25:45,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:45,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:45,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:45,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:45,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 03:25:45,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:45,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 03:25:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:45,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:45,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:45,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 03:25:45,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:45,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 03:25:45,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:45,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:45,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 03:25:45,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:45,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040659712] [2020-10-14 03:25:45,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:45,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:45,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240334427] [2020-10-14 03:25:45,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:45,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:45,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:45,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:45,829 INFO L87 Difference]: Start difference. First operand 18162 states and 22479 transitions. Second operand 7 states. [2020-10-14 03:25:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:54,851 INFO L93 Difference]: Finished difference Result 45521 states and 58137 transitions. [2020-10-14 03:25:54,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:25:54,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 324 [2020-10-14 03:25:54,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:54,975 INFO L225 Difference]: With dead ends: 45521 [2020-10-14 03:25:54,976 INFO L226 Difference]: Without dead ends: 27365 [2020-10-14 03:25:55,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:55,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27365 states. [2020-10-14 03:25:55,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27365 to 25725. [2020-10-14 03:25:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25725 states. [2020-10-14 03:25:55,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25725 states to 25725 states and 32863 transitions. [2020-10-14 03:25:55,597 INFO L78 Accepts]: Start accepts. Automaton has 25725 states and 32863 transitions. Word has length 324 [2020-10-14 03:25:55,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:55,598 INFO L479 AbstractCegarLoop]: Abstraction has 25725 states and 32863 transitions. [2020-10-14 03:25:55,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:55,598 INFO L276 IsEmpty]: Start isEmpty. Operand 25725 states and 32863 transitions. [2020-10-14 03:25:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-14 03:25:55,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:55,624 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 03:25:55,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:25:55,625 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:55,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:55,625 INFO L82 PathProgramCache]: Analyzing trace with hash 588373965, now seen corresponding path program 1 times [2020-10-14 03:25:55,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:55,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068728283] [2020-10-14 03:25:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:55,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:55,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:56,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:56,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:56,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:59,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:59,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-14 03:25:59,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:25:59,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3349 [2020-10-14 03:25:59,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:59,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 03:25:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 03:25:59,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:59,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:59,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:59,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:59,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:59,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:59,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:25:59,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:59,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:59,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:59,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:59,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:59,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:59,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:59,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:59,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:59,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:25:59,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:59,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 03:25:59,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:59,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:59,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:59,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:59,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 03:25:59,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:59,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 03:25:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:59,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:59,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:59,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 03:25:59,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:59,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 03:25:59,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:59,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:59,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:59,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:59,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 03:25:59,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:25:59,541 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:59,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068728283] [2020-10-14 03:25:59,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:59,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:59,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35979556] [2020-10-14 03:25:59,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:59,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:59,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:59,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:59,544 INFO L87 Difference]: Start difference. First operand 25725 states and 32863 transitions. Second operand 7 states. [2020-10-14 03:26:09,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:09,360 INFO L93 Difference]: Finished difference Result 59817 states and 82373 transitions. [2020-10-14 03:26:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:26:09,363 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-14 03:26:09,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:09,531 INFO L225 Difference]: With dead ends: 59817 [2020-10-14 03:26:09,531 INFO L226 Difference]: Without dead ends: 34098 [2020-10-14 03:26:09,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:09,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34098 states. [2020-10-14 03:26:10,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34098 to 33289. [2020-10-14 03:26:10,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33289 states. [2020-10-14 03:26:10,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33289 states to 33289 states and 42734 transitions. [2020-10-14 03:26:10,345 INFO L78 Accepts]: Start accepts. Automaton has 33289 states and 42734 transitions. Word has length 329 [2020-10-14 03:26:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:10,345 INFO L479 AbstractCegarLoop]: Abstraction has 33289 states and 42734 transitions. [2020-10-14 03:26:10,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:10,346 INFO L276 IsEmpty]: Start isEmpty. Operand 33289 states and 42734 transitions. [2020-10-14 03:26:10,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-14 03:26:10,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:10,376 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 03:26:10,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:26:10,377 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:10,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:10,377 INFO L82 PathProgramCache]: Analyzing trace with hash -547570481, now seen corresponding path program 1 times [2020-10-14 03:26:10,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:10,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509180433] [2020-10-14 03:26:10,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:10,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:10,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:11,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:12,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:15,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:15,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-14 03:26:15,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:26:15,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 03:26:15,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:15,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:15,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:15,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 03:26:15,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 03:26:15,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:15,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:15,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:15,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:15,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:15,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:15,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:26:15,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:15,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:15,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:15,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:15,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:15,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:15,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:15,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:26:15,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:15,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 03:26:15,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:15,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:15,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:15,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:15,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 03:26:15,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:15,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 03:26:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:15,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:15,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:15,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 03:26:15,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:15,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 03:26:15,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:15,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:15,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:15,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:15,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 03:26:15,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:26:16,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509180433] [2020-10-14 03:26:16,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:16,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:16,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768333615] [2020-10-14 03:26:16,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:16,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:16,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:16,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:16,080 INFO L87 Difference]: Start difference. First operand 33289 states and 42734 transitions. Second operand 7 states. [2020-10-14 03:26:35,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:35,071 INFO L93 Difference]: Finished difference Result 97583 states and 139792 transitions. [2020-10-14 03:26:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:26:35,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-14 03:26:35,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:35,382 INFO L225 Difference]: With dead ends: 97583 [2020-10-14 03:26:35,382 INFO L226 Difference]: Without dead ends: 59165 [2020-10-14 03:26:35,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:35,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59165 states. [2020-10-14 03:26:36,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59165 to 55456. [2020-10-14 03:26:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55456 states. [2020-10-14 03:26:37,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55456 states to 55456 states and 69742 transitions. [2020-10-14 03:26:37,153 INFO L78 Accepts]: Start accepts. Automaton has 55456 states and 69742 transitions. Word has length 329 [2020-10-14 03:26:37,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:37,154 INFO L479 AbstractCegarLoop]: Abstraction has 55456 states and 69742 transitions. [2020-10-14 03:26:37,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:37,155 INFO L276 IsEmpty]: Start isEmpty. Operand 55456 states and 69742 transitions. [2020-10-14 03:26:37,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-14 03:26:37,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:37,180 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:26:37,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:26:37,181 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:37,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:37,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1241974711, now seen corresponding path program 1 times [2020-10-14 03:26:37,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:37,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270545566] [2020-10-14 03:26:37,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:37,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:37,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:37,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:37,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:40,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:40,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:42,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:42,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-14 03:26:42,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:26:42,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 03:26:42,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:42,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:42,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-14 03:26:42,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 03:26:42,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:42,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:42,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:42,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:42,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:42,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:42,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:26:42,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:42,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:42,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:42,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:42,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:42,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:42,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:42,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 03:26:42,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:42,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 03:26:42,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:42,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:42,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:42,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:42,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 03:26:42,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:42,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 03:26:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:42,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:42,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:42,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 03:26:42,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:42,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 03:26:42,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:42,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:42,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 03:26:42,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 254 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:26:42,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270545566] [2020-10-14 03:26:42,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:42,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:42,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876826528] [2020-10-14 03:26:42,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:42,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:42,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:42,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:42,706 INFO L87 Difference]: Start difference. First operand 55456 states and 69742 transitions. Second operand 7 states. [2020-10-14 03:26:51,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:51,031 INFO L93 Difference]: Finished difference Result 110342 states and 139118 transitions. [2020-10-14 03:26:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:26:51,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-10-14 03:26:51,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:51,222 INFO L225 Difference]: With dead ends: 110342 [2020-10-14 03:26:51,222 INFO L226 Difference]: Without dead ends: 54896 [2020-10-14 03:26:51,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:51,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54896 states. [2020-10-14 03:26:52,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54896 to 51778. [2020-10-14 03:26:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51778 states. [2020-10-14 03:26:52,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51778 states to 51778 states and 61042 transitions. [2020-10-14 03:26:52,447 INFO L78 Accepts]: Start accepts. Automaton has 51778 states and 61042 transitions. Word has length 335 [2020-10-14 03:26:52,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:52,448 INFO L479 AbstractCegarLoop]: Abstraction has 51778 states and 61042 transitions. [2020-10-14 03:26:52,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:52,448 INFO L276 IsEmpty]: Start isEmpty. Operand 51778 states and 61042 transitions. [2020-10-14 03:26:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-14 03:26:52,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:52,466 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:26:52,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:26:52,467 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:52,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1192710285, now seen corresponding path program 1 times [2020-10-14 03:26:52,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:52,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718744282] [2020-10-14 03:26:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:52,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:52,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:53,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:55,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:55,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-14 03:26:55,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:26:55,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3120 [2020-10-14 03:26:55,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:55,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-14 03:26:55,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 03:26:55,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:55,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:55,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:55,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:55,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:55,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:55,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:26:55,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:55,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:55,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:55,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:55,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:55,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:55,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:55,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:55,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:55,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 03:26:55,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:55,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 03:26:55,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:55,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:55,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:55,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:55,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:55,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:55,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-14 03:26:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:55,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:55,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:55,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 03:26:55,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:55,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 03:26:55,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:55,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:55,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:55,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:55,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 03:26:55,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-14 03:26:55,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718744282] [2020-10-14 03:26:55,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:55,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:26:55,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067666235] [2020-10-14 03:26:55,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:26:55,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:55,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:26:55,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:26:55,962 INFO L87 Difference]: Start difference. First operand 51778 states and 61042 transitions. Second operand 5 states. [2020-10-14 03:27:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:03,659 INFO L93 Difference]: Finished difference Result 86294 states and 99809 transitions. [2020-10-14 03:27:03,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:03,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 340 [2020-10-14 03:27:03,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:04,046 INFO L225 Difference]: With dead ends: 86294 [2020-10-14 03:27:04,047 INFO L226 Difference]: Without dead ends: 54870 [2020-10-14 03:27:04,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:27:04,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54870 states. [2020-10-14 03:27:04,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54870 to 53026. [2020-10-14 03:27:04,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53026 states. [2020-10-14 03:27:04,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53026 states to 53026 states and 62378 transitions. [2020-10-14 03:27:04,742 INFO L78 Accepts]: Start accepts. Automaton has 53026 states and 62378 transitions. Word has length 340 [2020-10-14 03:27:04,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:04,743 INFO L479 AbstractCegarLoop]: Abstraction has 53026 states and 62378 transitions. [2020-10-14 03:27:04,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:27:04,743 INFO L276 IsEmpty]: Start isEmpty. Operand 53026 states and 62378 transitions. [2020-10-14 03:27:04,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-14 03:27:04,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:04,757 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:04,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:27:04,758 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:04,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:04,758 INFO L82 PathProgramCache]: Analyzing trace with hash 350787927, now seen corresponding path program 1 times [2020-10-14 03:27:04,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:04,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701903367] [2020-10-14 03:27:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:04,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:04,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:05,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:05,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:07,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:07,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-14 03:27:07,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:27:07,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2500 [2020-10-14 03:27:07,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:07,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:07,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:07,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 03:27:07,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 03:27:07,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:07,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:07,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:07,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:07,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:07,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:27:07,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:07,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:07,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:07,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:07,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:07,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:27:07,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:07,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 03:27:07,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:07,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:07,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:07,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:07,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 03:27:07,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 03:27:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:07,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:07,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:07,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-14 03:27:07,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:07,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 03:27:07,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:07,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:27:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 03:27:07,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:07,836 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:27:07,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701903367] [2020-10-14 03:27:07,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:07,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:27:07,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988466249] [2020-10-14 03:27:07,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:27:07,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:07,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:27:07,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:27:07,840 INFO L87 Difference]: Start difference. First operand 53026 states and 62378 transitions. Second operand 7 states. [2020-10-14 03:27:20,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:20,002 INFO L93 Difference]: Finished difference Result 108491 states and 127024 transitions. [2020-10-14 03:27:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:27:20,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 365 [2020-10-14 03:27:20,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:20,170 INFO L225 Difference]: With dead ends: 108491 [2020-10-14 03:27:20,170 INFO L226 Difference]: Without dead ends: 67835 [2020-10-14 03:27:20,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:27:20,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67835 states. [2020-10-14 03:27:21,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67835 to 62883. [2020-10-14 03:27:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62883 states. [2020-10-14 03:27:21,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62883 states to 62883 states and 74411 transitions. [2020-10-14 03:27:21,541 INFO L78 Accepts]: Start accepts. Automaton has 62883 states and 74411 transitions. Word has length 365 [2020-10-14 03:27:21,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:21,542 INFO L479 AbstractCegarLoop]: Abstraction has 62883 states and 74411 transitions. [2020-10-14 03:27:21,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:27:21,542 INFO L276 IsEmpty]: Start isEmpty. Operand 62883 states and 74411 transitions. [2020-10-14 03:27:21,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-14 03:27:21,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:21,559 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:27:21,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:27:21,559 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:21,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:21,560 INFO L82 PathProgramCache]: Analyzing trace with hash 299259528, now seen corresponding path program 1 times [2020-10-14 03:27:21,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:21,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159978208] [2020-10-14 03:27:21,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:21,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:21,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:22,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:22,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:23,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:23,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:24,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:26,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:26,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-14 03:27:26,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 03:27:26,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 03:27:26,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:26,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:26,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:26,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-14 03:27:26,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:27:26,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:26,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:26,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:26,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:26,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:26,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:26,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:27:26,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:26,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:26,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:26,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:26,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:26,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:26,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:26,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:27:26,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:26,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 03:27:26,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:26,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-14 03:27:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:27:26,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:26,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-14 03:27:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:26,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:26,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:26,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 03:27:26,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 03:27:26,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:26,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-14 03:27:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-14 03:27:27,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159978208] [2020-10-14 03:27:27,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:27,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:27:27,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185821309] [2020-10-14 03:27:27,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:27,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:27,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:27,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:27,249 INFO L87 Difference]: Start difference. First operand 62883 states and 74411 transitions. Second operand 5 states. [2020-10-14 03:27:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:34,113 INFO L93 Difference]: Finished difference Result 124443 states and 146342 transitions. [2020-10-14 03:27:34,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:34,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 380 [2020-10-14 03:27:34,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:34,266 INFO L225 Difference]: With dead ends: 124443 [2020-10-14 03:27:34,266 INFO L226 Difference]: Without dead ends: 62874 [2020-10-14 03:27:34,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:27:34,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62874 states.