/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/Problem18_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:17:38,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:17:38,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:17:38,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:17:38,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:17:38,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:17:38,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:17:38,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:17:38,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:17:38,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:17:38,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:17:38,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:17:38,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:17:38,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:17:38,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:17:38,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:17:38,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:17:38,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:17:38,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:17:38,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:17:38,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:17:38,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:17:38,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:17:38,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:17:38,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:17:38,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:17:38,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:17:38,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:17:38,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:17:38,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:17:38,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:17:38,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:17:38,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:17:38,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:17:38,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:17:38,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:17:38,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:17:38,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:17:38,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:17:38,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:17:38,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:17:38,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 04:17:38,151 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:17:38,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:17:38,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:17:38,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:17:38,153 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:17:38,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:17:38,154 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:17:38,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:17:38,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:17:38,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:17:38,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:17:38,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:17:38,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:17:38,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:17:38,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:17:38,157 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:17:38,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:17:38,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:17:38,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:17:38,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:17:38,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:17:38,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:17:38,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:17:38,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:17:38,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:17:38,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:17:38,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:17:38,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:17:38,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:17:38,160 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 04:17:38,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:17:38,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:17:38,494 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:17:38,496 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:17:38,496 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:17:38,497 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label31.c [2020-10-14 04:17:38,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08530607f/8f96a6d7f91547228453fd730b61d740/FLAG656026df7 [2020-10-14 04:17:39,231 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:17:39,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label31.c [2020-10-14 04:17:39,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08530607f/8f96a6d7f91547228453fd730b61d740/FLAG656026df7 [2020-10-14 04:17:39,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08530607f/8f96a6d7f91547228453fd730b61d740 [2020-10-14 04:17:39,414 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:17:39,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:17:39,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:17:39,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:17:39,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:17:39,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:17:39" (1/1) ... [2020-10-14 04:17:39,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d15d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:39, skipping insertion in model container [2020-10-14 04:17:39,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:17:39" (1/1) ... [2020-10-14 04:17:39,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:17:39,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:17:41,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:17:41,075 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:17:41,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:17:41,562 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:17:41,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:41 WrapperNode [2020-10-14 04:17:41,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:17:41,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:17:41,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:17:41,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:17:41,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:41" (1/1) ... [2020-10-14 04:17:41,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:41" (1/1) ... [2020-10-14 04:17:41,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:41" (1/1) ... [2020-10-14 04:17:41,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:41" (1/1) ... [2020-10-14 04:17:41,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:41" (1/1) ... [2020-10-14 04:17:41,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:41" (1/1) ... [2020-10-14 04:17:41,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:41" (1/1) ... [2020-10-14 04:17:41,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:17:41,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:17:41,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:17:41,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:17:41,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:17:41,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:17:41,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:17:41,883 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:17:41,883 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:17:41,883 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:17:41,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:17:41,883 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:17:41,883 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:17:41,883 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:17:41,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:17:41,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:17:41,884 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:17:41,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:17:41,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:17:41,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:17:47,539 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:17:47,539 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:17:47,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:17:47 BoogieIcfgContainer [2020-10-14 04:17:47,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:17:47,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:17:47,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:17:47,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:17:47,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:17:39" (1/3) ... [2020-10-14 04:17:47,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525384d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:17:47, skipping insertion in model container [2020-10-14 04:17:47,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:17:41" (2/3) ... [2020-10-14 04:17:47,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525384d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:17:47, skipping insertion in model container [2020-10-14 04:17:47,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:17:47" (3/3) ... [2020-10-14 04:17:47,557 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label31.c [2020-10-14 04:17:47,568 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:17:47,576 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:17:47,590 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:17:47,617 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:17:47,617 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:17:47,617 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:17:47,617 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:17:47,618 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:17:47,618 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:17:47,618 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:17:47,618 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:17:47,661 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:17:47,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 04:17:47,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:17:47,674 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] [2020-10-14 04:17:47,674 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:17:47,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:17:47,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1928729618, now seen corresponding path program 1 times [2020-10-14 04:17:47,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:17:47,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237367352] [2020-10-14 04:17:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:17:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:47,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:48,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:48,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 04:17:48,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:48,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-14 04:17:48,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:48,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:48,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:17:48,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:17:48,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 04:17:48,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:17:48,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:48,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:48,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:48,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:48,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:48,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:17:48,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:48,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:48,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:48,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:48,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:17:48,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:17:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:17:48,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237367352] [2020-10-14 04:17:48,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:17:48,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:17:48,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247694188] [2020-10-14 04:17:48,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:17:48,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:48,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:17:48,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:17:48,356 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:17:55,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:17:55,089 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 04:17:55,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:17:55,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-14 04:17:55,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:17:55,131 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 04:17:55,132 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:17:55,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:17:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:17:55,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 04:17:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 04:17:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-14 04:17:55,294 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 21 [2020-10-14 04:17:55,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:17:55,295 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-14 04:17:55,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:17:55,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-14 04:17:55,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 04:17:55,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:17:55,301 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:17:55,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:17:55,301 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:17:55,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:17:55,302 INFO L82 PathProgramCache]: Analyzing trace with hash -682103594, now seen corresponding path program 1 times [2020-10-14 04:17:55,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:17:55,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164780880] [2020-10-14 04:17:55,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:17:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:55,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:55,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:55,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 04:17:55,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:17:55,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-14 04:17:55,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:55,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:17:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:17:55,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:17:55,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:55,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:17:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:55,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:55,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:55,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:17:55,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:55,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:17:55,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:55,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:17:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:17:55,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:55,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:17:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:17:55,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:17:56,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:17:56,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:17:56,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:17:56,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 04:17:56,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:17:56,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:17:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:17:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:17:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:17:56,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:17:56,058 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:17:56,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164780880] [2020-10-14 04:17:56,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:17:56,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:17:56,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804417852] [2020-10-14 04:17:56,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:17:56,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:17:56,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:17:56,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:17:56,062 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 5 states. [2020-10-14 04:18:03,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:03,392 INFO L93 Difference]: Finished difference Result 3561 states and 5819 transitions. [2020-10-14 04:18:03,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:18:03,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-14 04:18:03,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:03,405 INFO L225 Difference]: With dead ends: 3561 [2020-10-14 04:18:03,405 INFO L226 Difference]: Without dead ends: 2142 [2020-10-14 04:18:03,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:18:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-14 04:18:03,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2138. [2020-10-14 04:18:03,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2138 states. [2020-10-14 04:18:03,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 3083 transitions. [2020-10-14 04:18:03,464 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 3083 transitions. Word has length 91 [2020-10-14 04:18:03,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:03,465 INFO L479 AbstractCegarLoop]: Abstraction has 2138 states and 3083 transitions. [2020-10-14 04:18:03,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:18:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 3083 transitions. [2020-10-14 04:18:03,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 04:18:03,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:03,475 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:18:03,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:18:03,476 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:03,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:03,476 INFO L82 PathProgramCache]: Analyzing trace with hash 891976090, now seen corresponding path program 1 times [2020-10-14 04:18:03,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:03,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787936371] [2020-10-14 04:18:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:03,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:03,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:04,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:04,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 04:18:04,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:18:04,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-14 04:18:04,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:04,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:04,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:04,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:18:04,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:18:04,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:04,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:04,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:04,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:04,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:04,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:04,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:18:04,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:04,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:04,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:04,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:04,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:04,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:04,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:04,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:04,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:04,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:18:04,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:04,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 04:18:04,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:04,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:18:04,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:18:04,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787936371] [2020-10-14 04:18:04,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:04,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:18:04,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924684679] [2020-10-14 04:18:04,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:18:04,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:04,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:18:04,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:18:04,383 INFO L87 Difference]: Start difference. First operand 2138 states and 3083 transitions. Second operand 5 states. [2020-10-14 04:18:13,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:13,653 INFO L93 Difference]: Finished difference Result 4984 states and 7534 transitions. [2020-10-14 04:18:13,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:18:13,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-14 04:18:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:13,669 INFO L225 Difference]: With dead ends: 4984 [2020-10-14 04:18:13,669 INFO L226 Difference]: Without dead ends: 2852 [2020-10-14 04:18:13,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:18:13,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-10-14 04:18:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2848. [2020-10-14 04:18:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2848 states. [2020-10-14 04:18:13,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 3944 transitions. [2020-10-14 04:18:13,735 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 3944 transitions. Word has length 109 [2020-10-14 04:18:13,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:13,736 INFO L479 AbstractCegarLoop]: Abstraction has 2848 states and 3944 transitions. [2020-10-14 04:18:13,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:18:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 3944 transitions. [2020-10-14 04:18:13,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 04:18:13,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:13,738 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:18:13,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:18:13,739 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:13,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:13,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1520603454, now seen corresponding path program 1 times [2020-10-14 04:18:13,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:13,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570086689] [2020-10-14 04:18:13,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:13,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:13,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:14,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:14,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 04:18:14,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:18:14,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-14 04:18:14,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:14,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:14,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 04:18:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:18:14,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-14 04:18:14,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:14,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:14,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:14,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:14,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:18:14,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:14,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:14,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:14,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:14,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:14,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:14,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:18:14,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:14,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 04:18:14,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:14,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:14,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:14,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:14,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 04:18:14,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:18:14,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570086689] [2020-10-14 04:18:14,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:14,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:18:14,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111148613] [2020-10-14 04:18:14,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:18:14,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:14,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:18:14,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:18:14,550 INFO L87 Difference]: Start difference. First operand 2848 states and 3944 transitions. Second operand 5 states. [2020-10-14 04:18:24,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:24,260 INFO L93 Difference]: Finished difference Result 6404 states and 9263 transitions. [2020-10-14 04:18:24,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:18:24,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-14 04:18:24,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:24,278 INFO L225 Difference]: With dead ends: 6404 [2020-10-14 04:18:24,278 INFO L226 Difference]: Without dead ends: 3562 [2020-10-14 04:18:24,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:18:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2020-10-14 04:18:24,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3558. [2020-10-14 04:18:24,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-10-14 04:18:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 4789 transitions. [2020-10-14 04:18:24,371 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 4789 transitions. Word has length 111 [2020-10-14 04:18:24,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:24,372 INFO L479 AbstractCegarLoop]: Abstraction has 3558 states and 4789 transitions. [2020-10-14 04:18:24,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:18:24,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 4789 transitions. [2020-10-14 04:18:24,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 04:18:24,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:24,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:18:24,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:18:24,379 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:24,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:24,379 INFO L82 PathProgramCache]: Analyzing trace with hash 908476022, now seen corresponding path program 1 times [2020-10-14 04:18:24,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:24,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789338108] [2020-10-14 04:18:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:24,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:25,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:25,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 04:18:25,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:18:25,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-10-14 04:18:25,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:25,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:25,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:25,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-14 04:18:25,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:18:25,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:25,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:25,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:25,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:25,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:25,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:25,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:18:25,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:25,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:25,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:25,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:25,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:25,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 04:18:25,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 04:18:25,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:25,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 04:18:25,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:18:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:18:25,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789338108] [2020-10-14 04:18:25,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:25,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:18:25,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316221071] [2020-10-14 04:18:25,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:18:25,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:25,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:18:25,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:18:25,585 INFO L87 Difference]: Start difference. First operand 3558 states and 4789 transitions. Second operand 5 states. [2020-10-14 04:18:35,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:35,876 INFO L93 Difference]: Finished difference Result 10668 states and 14552 transitions. [2020-10-14 04:18:35,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:18:35,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-14 04:18:35,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:35,911 INFO L225 Difference]: With dead ends: 10668 [2020-10-14 04:18:35,912 INFO L226 Difference]: Without dead ends: 7116 [2020-10-14 04:18:35,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:18:35,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7116 states. [2020-10-14 04:18:36,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7116 to 7108. [2020-10-14 04:18:36,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7108 states. [2020-10-14 04:18:36,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 9000 transitions. [2020-10-14 04:18:36,060 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 9000 transitions. Word has length 171 [2020-10-14 04:18:36,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:36,060 INFO L479 AbstractCegarLoop]: Abstraction has 7108 states and 9000 transitions. [2020-10-14 04:18:36,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:18:36,061 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 9000 transitions. [2020-10-14 04:18:36,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 04:18:36,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:36,063 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:18:36,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:18:36,064 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:36,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:36,064 INFO L82 PathProgramCache]: Analyzing trace with hash -969777809, now seen corresponding path program 1 times [2020-10-14 04:18:36,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:36,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330108091] [2020-10-14 04:18:36,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:36,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:36,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:36,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:36,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 04:18:36,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:18:36,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-10-14 04:18:36,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:36,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:36,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:36,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:18:36,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:18:36,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:36,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:36,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:36,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:36,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:36,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:36,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 04:18:36,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:36,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:36,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:36,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:36,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:18:36,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:36,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:37,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:37,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:18:37,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:37,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 04:18:37,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:37,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:37,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:37,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:37,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:18:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:37,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:37,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:37,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:18:37,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 04:18:37,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:37,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:18:37,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:18:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 04:18:37,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330108091] [2020-10-14 04:18:37,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:37,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:18:37,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121785208] [2020-10-14 04:18:37,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:18:37,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:37,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:18:37,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:18:37,166 INFO L87 Difference]: Start difference. First operand 7108 states and 9000 transitions. Second operand 5 states. [2020-10-14 04:18:45,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:45,986 INFO L93 Difference]: Finished difference Result 21312 states and 27369 transitions. [2020-10-14 04:18:45,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:18:45,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-14 04:18:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:46,038 INFO L225 Difference]: With dead ends: 21312 [2020-10-14 04:18:46,039 INFO L226 Difference]: Without dead ends: 14210 [2020-10-14 04:18:46,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:18:46,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14210 states. [2020-10-14 04:18:46,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14210 to 14202. [2020-10-14 04:18:46,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14202 states. [2020-10-14 04:18:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14202 states to 14202 states and 17281 transitions. [2020-10-14 04:18:46,337 INFO L78 Accepts]: Start accepts. Automaton has 14202 states and 17281 transitions. Word has length 182 [2020-10-14 04:18:46,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:46,338 INFO L479 AbstractCegarLoop]: Abstraction has 14202 states and 17281 transitions. [2020-10-14 04:18:46,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:18:46,338 INFO L276 IsEmpty]: Start isEmpty. Operand 14202 states and 17281 transitions. [2020-10-14 04:18:46,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-14 04:18:46,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:46,343 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:18:46,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:18:46,343 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:46,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:46,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1386725390, now seen corresponding path program 1 times [2020-10-14 04:18:46,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:46,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824119725] [2020-10-14 04:18:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:46,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:46,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:47,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:47,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:49,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:49,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-14 04:18:49,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:18:49,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2872 [2020-10-14 04:18:49,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:49,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:49,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 04:18:49,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:18:49,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:49,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:18:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:49,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:49,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:49,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:18:49,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:49,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:18:49,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:49,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:49,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:18:49,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:49,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:18:49,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:49,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:18:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:49,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:49,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:18:49,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:49,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 04:18:49,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:49,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:49,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:18:49,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:18:49,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:18:49,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:49,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 04:18:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:49,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:49,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:18:49,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:18:49,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:18:49,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 04:18:49,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:18:49,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:18:49,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:18:49,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:18:49,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:18:49,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:18:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:18:49,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824119725] [2020-10-14 04:18:49,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:18:49,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:18:49,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555265413] [2020-10-14 04:18:49,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:18:49,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:18:49,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:18:49,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:18:49,892 INFO L87 Difference]: Start difference. First operand 14202 states and 17281 transitions. Second operand 7 states. [2020-10-14 04:18:58,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:18:58,686 INFO L93 Difference]: Finished difference Result 33486 states and 41661 transitions. [2020-10-14 04:18:58,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:18:58,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-10-14 04:18:58,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:18:58,736 INFO L225 Difference]: With dead ends: 33486 [2020-10-14 04:18:58,737 INFO L226 Difference]: Without dead ends: 17155 [2020-10-14 04:18:58,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:18:58,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17155 states. [2020-10-14 04:18:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17155 to 17151. [2020-10-14 04:18:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17151 states. [2020-10-14 04:18:59,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17151 states to 17151 states and 19054 transitions. [2020-10-14 04:18:59,057 INFO L78 Accepts]: Start accepts. Automaton has 17151 states and 19054 transitions. Word has length 203 [2020-10-14 04:18:59,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:18:59,058 INFO L479 AbstractCegarLoop]: Abstraction has 17151 states and 19054 transitions. [2020-10-14 04:18:59,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:18:59,058 INFO L276 IsEmpty]: Start isEmpty. Operand 17151 states and 19054 transitions. [2020-10-14 04:18:59,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-14 04:18:59,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:18:59,064 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:18:59,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:18:59,064 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:18:59,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:18:59,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1294214877, now seen corresponding path program 1 times [2020-10-14 04:18:59,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:18:59,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4539339] [2020-10-14 04:18:59,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:18:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:18:59,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:59,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:18:59,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:01,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:01,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-14 04:19:01,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:19:01,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2615 [2020-10-14 04:19:01,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:01,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:19:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:19:01,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:01,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:01,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:01,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:01,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:01,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:01,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:19:01,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:01,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:01,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:01,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:01,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:01,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:01,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:19:01,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:01,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 04:19:01,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:01,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:01,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:01,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:19:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:01,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:01,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:01,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:19:01,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:01,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 04:19:01,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:01,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:01,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:01,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:01,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:19:01,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:01,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 04:19:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:02,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:02,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:19:02,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:02,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 04:19:02,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:02,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:19:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 04:19:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 04:19:02,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4539339] [2020-10-14 04:19:02,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:02,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:19:02,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097007814] [2020-10-14 04:19:02,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:19:02,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:02,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:19:02,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:19:02,329 INFO L87 Difference]: Start difference. First operand 17151 states and 19054 transitions. Second operand 8 states. [2020-10-14 04:19:13,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:13,911 INFO L93 Difference]: Finished difference Result 35209 states and 39399 transitions. [2020-10-14 04:19:13,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:19:13,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 276 [2020-10-14 04:19:13,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:13,974 INFO L225 Difference]: With dead ends: 35209 [2020-10-14 04:19:13,974 INFO L226 Difference]: Without dead ends: 17357 [2020-10-14 04:19:14,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:19:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17357 states. [2020-10-14 04:19:14,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17357 to 17345. [2020-10-14 04:19:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17345 states. [2020-10-14 04:19:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17345 states to 17345 states and 18924 transitions. [2020-10-14 04:19:14,298 INFO L78 Accepts]: Start accepts. Automaton has 17345 states and 18924 transitions. Word has length 276 [2020-10-14 04:19:14,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:14,298 INFO L479 AbstractCegarLoop]: Abstraction has 17345 states and 18924 transitions. [2020-10-14 04:19:14,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:19:14,299 INFO L276 IsEmpty]: Start isEmpty. Operand 17345 states and 18924 transitions. [2020-10-14 04:19:14,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-14 04:19:14,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:14,305 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:19:14,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:19:14,305 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:14,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:14,306 INFO L82 PathProgramCache]: Analyzing trace with hash 431938627, now seen corresponding path program 1 times [2020-10-14 04:19:14,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:14,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056913578] [2020-10-14 04:19:14,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:14,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:14,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:14,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:14,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:18,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:18,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-14 04:19:18,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:19:18,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3678 [2020-10-14 04:19:18,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:18,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:18,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:18,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:19:18,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 04:19:18,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:18,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:18,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:18,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:18,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:18,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:18,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:19:18,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:18,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:18,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:18,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:18,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:18,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:18,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:19:18,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:18,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:19:18,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:18,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:18,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:18,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:18,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:19:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:18,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:18,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:18,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:19:18,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:18,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 04:19:18,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:18,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:18,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:18,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:18,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:19:18,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:18,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 04:19:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:18,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:18,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 04:19:18,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:18,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 04:19:18,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:18,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:18,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:18,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:19:18,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 04:19:18,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-14 04:19:18,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056913578] [2020-10-14 04:19:18,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:18,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:19:18,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113691623] [2020-10-14 04:19:18,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:19:18,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:18,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:19:18,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:19:18,771 INFO L87 Difference]: Start difference. First operand 17345 states and 18924 transitions. Second operand 7 states. [2020-10-14 04:19:27,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:27,548 INFO L93 Difference]: Finished difference Result 43612 states and 48873 transitions. [2020-10-14 04:19:27,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:19:27,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 292 [2020-10-14 04:19:27,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:27,606 INFO L225 Difference]: With dead ends: 43612 [2020-10-14 04:19:27,607 INFO L226 Difference]: Without dead ends: 25559 [2020-10-14 04:19:27,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 04:19:27,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25559 states. [2020-10-14 04:19:27,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25559 to 25346. [2020-10-14 04:19:27,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25346 states. [2020-10-14 04:19:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25346 states to 25346 states and 27506 transitions. [2020-10-14 04:19:28,023 INFO L78 Accepts]: Start accepts. Automaton has 25346 states and 27506 transitions. Word has length 292 [2020-10-14 04:19:28,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:28,024 INFO L479 AbstractCegarLoop]: Abstraction has 25346 states and 27506 transitions. [2020-10-14 04:19:28,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:19:28,024 INFO L276 IsEmpty]: Start isEmpty. Operand 25346 states and 27506 transitions. [2020-10-14 04:19:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-14 04:19:28,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:28,034 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:19:28,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:19:28,034 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:28,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:28,035 INFO L82 PathProgramCache]: Analyzing trace with hash 157485506, now seen corresponding path program 1 times [2020-10-14 04:19:28,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:28,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650132289] [2020-10-14 04:19:28,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:28,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:28,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:28,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:28,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:29,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:33,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:33,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-14 04:19:33,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:19:33,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 04:19:33,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:33,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 04:19:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 04:19:33,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:33,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:33,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:33,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:33,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:33,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:33,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:19:33,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:33,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:33,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:33,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:33,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:33,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:33,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:33,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:19:33,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:33,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 04:19:33,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:33,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:33,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:33,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:33,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:19:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:33,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:33,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:33,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:19:33,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:33,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 04:19:33,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:33,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:33,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 04:19:33,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:33,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-14 04:19:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:33,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:33,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:33,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 04:19:33,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:33,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 04:19:33,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:33,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:33,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:33,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:19:33,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 04:19:33,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:19:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 239 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 04:19:33,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650132289] [2020-10-14 04:19:33,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:33,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:19:33,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163611653] [2020-10-14 04:19:33,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:19:33,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:33,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:19:33,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:19:33,617 INFO L87 Difference]: Start difference. First operand 25346 states and 27506 transitions. Second operand 7 states. [2020-10-14 04:19:44,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:19:44,258 INFO L93 Difference]: Finished difference Result 63047 states and 70134 transitions. [2020-10-14 04:19:44,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:19:44,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-14 04:19:44,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:19:44,363 INFO L225 Difference]: With dead ends: 63047 [2020-10-14 04:19:44,364 INFO L226 Difference]: Without dead ends: 36994 [2020-10-14 04:19:44,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:19:44,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36994 states. [2020-10-14 04:19:44,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36994 to 36774. [2020-10-14 04:19:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36774 states. [2020-10-14 04:19:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36774 states to 36774 states and 39629 transitions. [2020-10-14 04:19:45,033 INFO L78 Accepts]: Start accepts. Automaton has 36774 states and 39629 transitions. Word has length 329 [2020-10-14 04:19:45,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:19:45,034 INFO L479 AbstractCegarLoop]: Abstraction has 36774 states and 39629 transitions. [2020-10-14 04:19:45,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:19:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 36774 states and 39629 transitions. [2020-10-14 04:19:45,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-14 04:19:45,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:19:45,057 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:19:45,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:19:45,057 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:19:45,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:19:45,058 INFO L82 PathProgramCache]: Analyzing trace with hash 28060658, now seen corresponding path program 1 times [2020-10-14 04:19:45,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:19:45,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676079943] [2020-10-14 04:19:45,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:19:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:45,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:45,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:46,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:46,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:47,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:50,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:50,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-14 04:19:50,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:19:50,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 04:19:50,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:50,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 246 [2020-10-14 04:19:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-14 04:19:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:50,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:19:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:50,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:50,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:50,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:19:50,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:19:50,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:50,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:50,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:19:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:50,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:50,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:50,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:19:50,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:50,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:19:50,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:50,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:50,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:19:50,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:19:50,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:50,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:19:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:50,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:50,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:50,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 04:19:50,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:50,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 04:19:50,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:50,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:19:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:19:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:19:50,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:50,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 04:19:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:19:50,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:19:50,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:19:50,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 04:19:50,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:19:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 04:19:50,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:19:50,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:19:50,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:19:50,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:19:50,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 04:19:50,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:19:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-14 04:19:50,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676079943] [2020-10-14 04:19:50,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:19:50,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:19:50,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959370895] [2020-10-14 04:19:50,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:19:50,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:19:50,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:19:50,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:19:50,758 INFO L87 Difference]: Start difference. First operand 36774 states and 39629 transitions. Second operand 7 states. [2020-10-14 04:20:01,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:01,401 INFO L93 Difference]: Finished difference Result 83736 states and 92507 transitions. [2020-10-14 04:20:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:20:01,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 417 [2020-10-14 04:20:01,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:01,538 INFO L225 Difference]: With dead ends: 83736 [2020-10-14 04:20:01,538 INFO L226 Difference]: Without dead ends: 48381 [2020-10-14 04:20:01,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 04:20:01,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48381 states. [2020-10-14 04:20:03,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48381 to 44571. [2020-10-14 04:20:03,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44571 states. [2020-10-14 04:20:03,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44571 states to 44571 states and 47850 transitions. [2020-10-14 04:20:03,653 INFO L78 Accepts]: Start accepts. Automaton has 44571 states and 47850 transitions. Word has length 417 [2020-10-14 04:20:03,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:03,654 INFO L479 AbstractCegarLoop]: Abstraction has 44571 states and 47850 transitions. [2020-10-14 04:20:03,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:20:03,654 INFO L276 IsEmpty]: Start isEmpty. Operand 44571 states and 47850 transitions. [2020-10-14 04:20:03,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-14 04:20:03,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:03,670 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:03,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:20:03,670 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:03,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:03,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1484580995, now seen corresponding path program 1 times [2020-10-14 04:20:03,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:03,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386017238] [2020-10-14 04:20:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:03,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:04,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:07,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:07,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-10-14 04:20:07,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:20:07,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4034 [2020-10-14 04:20:07,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:07,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:20:07,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 04:20:07,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:07,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:07,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:07,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:07,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:07,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:07,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:07,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:07,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:07,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:07,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:07,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:07,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:07,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:07,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:20:07,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:07,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:20:07,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:07,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:07,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:07,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:07,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:07,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:07,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:20:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:07,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:07,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:07,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:20:07,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:07,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 04:20:07,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:07,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:07,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:07,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:07,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:20:07,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:07,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 04:20:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:07,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:07,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:07,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 04:20:07,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:07,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 04:20:07,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:07,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:20:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:20:07,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:07,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-14 04:20:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:08,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:08,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:08,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 04:20:08,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 04:20:08,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:08,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-14 04:20:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:08,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 224 proven. 95 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-14 04:20:08,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386017238] [2020-10-14 04:20:08,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:08,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:20:08,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568594491] [2020-10-14 04:20:08,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:20:08,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:08,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:20:08,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:20:08,340 INFO L87 Difference]: Start difference. First operand 44571 states and 47850 transitions. Second operand 7 states. [2020-10-14 04:20:15,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:15,623 INFO L93 Difference]: Finished difference Result 103361 states and 111985 transitions. [2020-10-14 04:20:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:20:15,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 440 [2020-10-14 04:20:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:15,761 INFO L225 Difference]: With dead ends: 103361 [2020-10-14 04:20:15,761 INFO L226 Difference]: Without dead ends: 60209 [2020-10-14 04:20:15,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:20:15,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60209 states. [2020-10-14 04:20:16,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60209 to 56677. [2020-10-14 04:20:16,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56677 states. [2020-10-14 04:20:16,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56677 states to 56677 states and 61636 transitions. [2020-10-14 04:20:16,925 INFO L78 Accepts]: Start accepts. Automaton has 56677 states and 61636 transitions. Word has length 440 [2020-10-14 04:20:16,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:16,925 INFO L479 AbstractCegarLoop]: Abstraction has 56677 states and 61636 transitions. [2020-10-14 04:20:16,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:20:16,926 INFO L276 IsEmpty]: Start isEmpty. Operand 56677 states and 61636 transitions. [2020-10-14 04:20:16,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-14 04:20:16,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:16,939 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:20:16,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:20:16,939 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:16,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:16,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1725739875, now seen corresponding path program 1 times [2020-10-14 04:20:16,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:16,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635599729] [2020-10-14 04:20:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:17,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:17,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:19,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:22,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:22,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-14 04:20:22,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:20:22,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-14 04:20:22,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:22,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:22,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:22,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-14 04:20:22,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-14 04:20:22,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:22,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:22,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:22,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:22,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:22,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:22,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:22,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:22,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:22,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:22,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:22,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:22,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:22,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:22,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:22,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:20:22,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:22,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 04:20:22,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:22,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:22,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:22,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:22,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:22,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:20:22,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:20:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:22,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:22,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:22,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:20:22,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:22,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 04:20:22,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:22,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:22,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:22,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:22,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 04:20:22,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:22,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 04:20:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:22,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:22,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:22,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 04:20:22,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:22,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 04:20:22,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:22,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:20:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 04:20:22,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:22,618 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 269 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-14 04:20:22,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635599729] [2020-10-14 04:20:22,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:22,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:20:22,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906491759] [2020-10-14 04:20:22,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:20:22,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:22,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:20:22,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:20:22,621 INFO L87 Difference]: Start difference. First operand 56677 states and 61636 transitions. Second operand 7 states. [2020-10-14 04:20:30,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:30,725 INFO L93 Difference]: Finished difference Result 110569 states and 120381 transitions. [2020-10-14 04:20:30,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:20:30,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 448 [2020-10-14 04:20:30,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:30,842 INFO L225 Difference]: With dead ends: 110569 [2020-10-14 04:20:30,843 INFO L226 Difference]: Without dead ends: 55311 [2020-10-14 04:20:30,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 04:20:30,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55311 states. [2020-10-14 04:20:33,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55311 to 51747. [2020-10-14 04:20:33,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51747 states. [2020-10-14 04:20:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51747 states to 51747 states and 54813 transitions. [2020-10-14 04:20:33,169 INFO L78 Accepts]: Start accepts. Automaton has 51747 states and 54813 transitions. Word has length 448 [2020-10-14 04:20:33,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:33,170 INFO L479 AbstractCegarLoop]: Abstraction has 51747 states and 54813 transitions. [2020-10-14 04:20:33,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:20:33,170 INFO L276 IsEmpty]: Start isEmpty. Operand 51747 states and 54813 transitions. [2020-10-14 04:20:33,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-14 04:20:33,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:33,205 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:33,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:20:33,205 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:33,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:33,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1250378031, now seen corresponding path program 1 times [2020-10-14 04:20:33,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:33,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213548747] [2020-10-14 04:20:33,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:33,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:33,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:34,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:34,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:38,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:38,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-14 04:20:38,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:20:38,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 04:20:38,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:38,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:38,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:38,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 04:20:38,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-14 04:20:38,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:38,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:38,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:38,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:38,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:38,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:38,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:20:38,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:38,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:38,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:38,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:38,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:38,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:38,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 04:20:38,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:38,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 04:20:38,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:38,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:38,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 04:20:38,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:38,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-14 04:20:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:38,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:38,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:38,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 04:20:38,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 04:20:38,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:38,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:20:38,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-14 04:20:38,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:38,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-14 04:20:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:38,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:38,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:38,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 04:20:38,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:38,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 04:20:38,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:38,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:38,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:38,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 04:20:38,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:38,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:39,125 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 154 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 04:20:39,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213548747] [2020-10-14 04:20:39,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:39,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:20:39,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11133050] [2020-10-14 04:20:39,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:20:39,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:39,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:20:39,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:20:39,127 INFO L87 Difference]: Start difference. First operand 51747 states and 54813 transitions. Second operand 8 states. [2020-10-14 04:20:51,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:20:51,891 INFO L93 Difference]: Finished difference Result 123018 states and 132361 transitions. [2020-10-14 04:20:51,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:20:51,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 478 [2020-10-14 04:20:51,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:20:52,091 INFO L225 Difference]: With dead ends: 123018 [2020-10-14 04:20:52,103 INFO L226 Difference]: Without dead ends: 69857 [2020-10-14 04:20:52,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:20:52,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69857 states. [2020-10-14 04:20:53,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69857 to 62438. [2020-10-14 04:20:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62438 states. [2020-10-14 04:20:53,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62438 states to 62438 states and 66053 transitions. [2020-10-14 04:20:53,588 INFO L78 Accepts]: Start accepts. Automaton has 62438 states and 66053 transitions. Word has length 478 [2020-10-14 04:20:53,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:20:53,589 INFO L479 AbstractCegarLoop]: Abstraction has 62438 states and 66053 transitions. [2020-10-14 04:20:53,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:20:53,589 INFO L276 IsEmpty]: Start isEmpty. Operand 62438 states and 66053 transitions. [2020-10-14 04:20:53,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2020-10-14 04:20:53,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:20:53,634 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:20:53,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 04:20:53,635 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:20:53,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:20:53,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1975129711, now seen corresponding path program 1 times [2020-10-14 04:20:53,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:20:53,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712828169] [2020-10-14 04:20:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:20:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:53,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:54,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:54,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:58,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:58,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 689 [2020-10-14 04:20:58,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:20:58,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 04:20:58,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:58,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:58,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:20:58,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 665 [2020-10-14 04:20:58,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 04:20:58,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:58,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:20:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:58,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:58,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:58,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:20:58,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:58,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:20:58,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:58,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:58,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:58,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:58,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:58,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:58,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:20:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:58,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:58,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:58,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:20:58,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:58,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:20:58,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:58,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:58,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:58,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:58,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:58,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:58,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:20:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:58,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:58,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:58,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:20:58,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:58,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 04:20:58,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:58,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:58,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:58,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:58,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 04:20:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:58,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:58,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:58,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:20:58,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:58,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:20:58,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:58,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:20:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:20:58,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:58,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 04:20:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:59,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:59,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-14 04:20:59,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:59,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 04:20:59,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:59,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 410 [2020-10-14 04:20:59,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:59,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:20:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:20:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:20:59,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:20:59,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 04:20:59,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:20:59,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 04:20:59,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:20:59,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:20:59,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:20:59,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:20:59,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 04:20:59,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:20:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2020-10-14 04:20:59,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712828169] [2020-10-14 04:20:59,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:20:59,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:20:59,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864944504] [2020-10-14 04:20:59,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:20:59,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:20:59,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:20:59,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:20:59,522 INFO L87 Difference]: Start difference. First operand 62438 states and 66053 transitions. Second operand 5 states. [2020-10-14 04:21:08,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:21:08,128 INFO L93 Difference]: Finished difference Result 134031 states and 141995 transitions. [2020-10-14 04:21:08,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:21:08,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 671 [2020-10-14 04:21:08,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:21:08,239 INFO L225 Difference]: With dead ends: 134031 [2020-10-14 04:21:08,240 INFO L226 Difference]: Without dead ends: 71605 [2020-10-14 04:21:08,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:21:08,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71605 states. [2020-10-14 04:21:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71605 to 71599. [2020-10-14 04:21:08,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71599 states. [2020-10-14 04:21:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71599 states to 71599 states and 75409 transitions. [2020-10-14 04:21:08,993 INFO L78 Accepts]: Start accepts. Automaton has 71599 states and 75409 transitions. Word has length 671 [2020-10-14 04:21:08,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:21:08,993 INFO L479 AbstractCegarLoop]: Abstraction has 71599 states and 75409 transitions. [2020-10-14 04:21:08,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:21:08,994 INFO L276 IsEmpty]: Start isEmpty. Operand 71599 states and 75409 transitions. [2020-10-14 04:21:09,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2020-10-14 04:21:09,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:21:09,033 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:21:09,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 04:21:09,034 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:21:09,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:21:09,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1808022225, now seen corresponding path program 1 times [2020-10-14 04:21:09,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:21:09,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143492522] [2020-10-14 04:21:09,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:21:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:09,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:09,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:13,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:13,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 746 [2020-10-14 04:21:13,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:21:13,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4130 [2020-10-14 04:21:13,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:13,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:21:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 04:21:13,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:13,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:21:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:13,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:13,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:13,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:21:13,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:13,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:21:13,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:13,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:13,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:13,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:13,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:21:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:13,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:13,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:13,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:21:13,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:13,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 04:21:13,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:13,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:21:13,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:13,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:21:13,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:13,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:21:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:13,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:13,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:13,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 04:21:13,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:13,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 04:21:13,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:13,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:13,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:21:13,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:21:13,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 04:21:13,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:13,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 04:21:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:14,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:14,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:14,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-14 04:21:14,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:14,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-14 04:21:14,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:14,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:14,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:14,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 475 [2020-10-14 04:21:14,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:14,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:21:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:21:14,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:21:14,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:21:14,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 04:21:14,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:21:14,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 04:21:14,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:21:14,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:21:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:21:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:21:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:21:14,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:21:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 155 proven. 111 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-14 04:21:15,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143492522] [2020-10-14 04:21:15,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:21:15,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:21:15,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022465820] [2020-10-14 04:21:15,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:21:15,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:21:15,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:21:15,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:21:15,033 INFO L87 Difference]: Start difference. First operand 71599 states and 75409 transitions. Second operand 7 states.