/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/Problem16_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:38:43,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:38:43,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:38:43,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:38:43,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:38:43,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:38:43,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:38:43,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:38:43,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:38:43,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:38:43,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:38:43,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:38:43,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:38:43,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:38:43,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:38:43,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:38:43,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:38:43,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:38:43,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:38:43,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:38:43,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:38:43,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:38:43,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:38:43,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:38:43,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:38:43,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:38:43,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:38:43,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:38:43,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:38:43,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:38:43,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:38:43,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:38:43,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:38:43,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:38:43,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:38:43,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:38:43,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:38:43,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:38:43,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:38:43,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:38:43,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:38:43,189 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 03:38:43,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:38:43,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:38:43,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:38:43,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:38:43,221 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:38:43,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:38:43,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:38:43,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:38:43,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:38:43,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:38:43,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:38:43,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:38:43,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:38:43,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:38:43,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:38:43,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:38:43,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:38:43,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:38:43,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:38:43,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:38:43,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:38:43,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:38:43,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:38:43,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:38:43,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:38:43,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:38:43,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:38:43,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:38:43,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:38:43,225 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:38:43,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:38:43,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:38:43,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:38:43,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:38:43,576 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:38:43,576 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label00.c [2020-10-14 03:38:43,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ef08b61a/94975589f3214facabea03d8f80baa12/FLAG1c0941222 [2020-10-14 03:38:44,481 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:38:44,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label00.c [2020-10-14 03:38:44,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ef08b61a/94975589f3214facabea03d8f80baa12/FLAG1c0941222 [2020-10-14 03:38:44,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ef08b61a/94975589f3214facabea03d8f80baa12 [2020-10-14 03:38:44,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:38:44,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:38:44,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:38:44,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:38:44,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:38:44,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:38:44" (1/1) ... [2020-10-14 03:38:44,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8d9ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:44, skipping insertion in model container [2020-10-14 03:38:44,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:38:44" (1/1) ... [2020-10-14 03:38:44,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:38:44,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:38:45,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:38:45,431 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:38:46,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:38:46,192 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:38:46,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:46 WrapperNode [2020-10-14 03:38:46,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:38:46,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:38:46,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:38:46,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:38:46,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:46" (1/1) ... [2020-10-14 03:38:46,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:46" (1/1) ... [2020-10-14 03:38:46,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:46" (1/1) ... [2020-10-14 03:38:46,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:46" (1/1) ... [2020-10-14 03:38:46,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:46" (1/1) ... [2020-10-14 03:38:46,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:46" (1/1) ... [2020-10-14 03:38:46,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:46" (1/1) ... [2020-10-14 03:38:46,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:38:46,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:38:46,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:38:46,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:38:46,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:38:46,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:38:46,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:38:46,488 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:38:46,488 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:38:46,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:38:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:38:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:38:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:38:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:38:46,491 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:38:46,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:38:46,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:38:46,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:38:51,297 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:38:51,298 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:38:51,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:38:51 BoogieIcfgContainer [2020-10-14 03:38:51,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:38:51,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:38:51,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:38:51,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:38:51,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:38:44" (1/3) ... [2020-10-14 03:38:51,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9998e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:38:51, skipping insertion in model container [2020-10-14 03:38:51,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:38:46" (2/3) ... [2020-10-14 03:38:51,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9998e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:38:51, skipping insertion in model container [2020-10-14 03:38:51,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:38:51" (3/3) ... [2020-10-14 03:38:51,314 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label00.c [2020-10-14 03:38:51,324 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:38:51,333 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:38:51,347 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:38:51,373 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:38:51,373 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:38:51,374 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:38:51,374 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:38:51,374 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:38:51,374 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:38:51,374 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:38:51,374 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:38:51,400 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-14 03:38:51,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 03:38:51,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:51,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:38:51,412 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:51,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:51,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1587899678, now seen corresponding path program 1 times [2020-10-14 03:38:51,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:51,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13942568] [2020-10-14 03:38:51,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:51,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:51,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:51,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 03:38:51,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:51,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-14 03:38:51,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:51,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:38:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:38:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 03:38:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:38:52,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:52,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:52,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:52,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:52,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:52,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 03:38:52,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:52,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:38:52,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:38:52,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13942568] [2020-10-14 03:38:52,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:38:52,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:38:52,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637900323] [2020-10-14 03:38:52,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:38:52,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:52,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:38:52,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:38:52,067 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-14 03:38:55,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:38:55,913 INFO L93 Difference]: Finished difference Result 1169 states and 2165 transitions. [2020-10-14 03:38:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:38:55,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-14 03:38:55,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:38:55,939 INFO L225 Difference]: With dead ends: 1169 [2020-10-14 03:38:55,939 INFO L226 Difference]: Without dead ends: 696 [2020-10-14 03:38:55,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:38:55,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-14 03:38:56,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 689. [2020-10-14 03:38:56,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-14 03:38:56,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1077 transitions. [2020-10-14 03:38:56,054 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1077 transitions. Word has length 27 [2020-10-14 03:38:56,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:38:56,054 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 1077 transitions. [2020-10-14 03:38:56,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:38:56,055 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1077 transitions. [2020-10-14 03:38:56,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 03:38:56,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:38:56,060 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:38:56,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:38:56,061 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:38:56,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:38:56,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1329246203, now seen corresponding path program 1 times [2020-10-14 03:38:56,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:38:56,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107316411] [2020-10-14 03:38:56,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:38:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:56,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:56,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:57,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:57,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:38:57,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:38:57,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 925 [2020-10-14 03:38:57,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:57,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:57,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:38:57,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 03:38:57,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 03:38:57,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:38:57,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:38:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:57,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:57,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:57,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:38:57,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:57,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:38:57,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:57,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:38:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:38:57,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:57,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:38:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:38:57,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:38:57,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:38:57,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:38:57,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:38:57,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 03:38:57,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:38:57,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:38:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:38:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:38:57,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 03:38:57,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:38:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:38:57,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107316411] [2020-10-14 03:38:57,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:38:57,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:38:57,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746406130] [2020-10-14 03:38:57,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:38:57,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:38:57,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:38:57,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:38:57,271 INFO L87 Difference]: Start difference. First operand 689 states and 1077 transitions. Second operand 5 states. [2020-10-14 03:39:02,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:02,124 INFO L93 Difference]: Finished difference Result 2060 states and 3249 transitions. [2020-10-14 03:39:02,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:02,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-14 03:39:02,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:02,139 INFO L225 Difference]: With dead ends: 2060 [2020-10-14 03:39:02,140 INFO L226 Difference]: Without dead ends: 1377 [2020-10-14 03:39:02,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:39:02,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2020-10-14 03:39:02,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1373. [2020-10-14 03:39:02,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1373 states. [2020-10-14 03:39:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1958 transitions. [2020-10-14 03:39:02,241 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1958 transitions. Word has length 102 [2020-10-14 03:39:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:02,246 INFO L479 AbstractCegarLoop]: Abstraction has 1373 states and 1958 transitions. [2020-10-14 03:39:02,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1958 transitions. [2020-10-14 03:39:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 03:39:02,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:02,262 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:02,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:39:02,263 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:02,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:02,264 INFO L82 PathProgramCache]: Analyzing trace with hash -847240209, now seen corresponding path program 1 times [2020-10-14 03:39:02,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:02,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671435579] [2020-10-14 03:39:02,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:02,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:02,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:03,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:03,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 03:39:03,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:39:03,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1216 [2020-10-14 03:39:03,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:03,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:03,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:03,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 03:39:03,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 03:39:03,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:03,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:03,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:03,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:03,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:03,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:03,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:39:03,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:03,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:03,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:03,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:03,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:03,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:39:03,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:03,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:03,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:03,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:39:03,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:03,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 03:39:03,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:03,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:03,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:03,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:39:03,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:03,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671435579] [2020-10-14 03:39:03,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:03,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:39:03,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423236590] [2020-10-14 03:39:03,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:39:03,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:03,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:39:03,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:39:03,886 INFO L87 Difference]: Start difference. First operand 1373 states and 1958 transitions. Second operand 5 states. [2020-10-14 03:39:09,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:09,027 INFO L93 Difference]: Finished difference Result 3425 states and 5023 transitions. [2020-10-14 03:39:09,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:09,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-14 03:39:09,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:09,041 INFO L225 Difference]: With dead ends: 3425 [2020-10-14 03:39:09,041 INFO L226 Difference]: Without dead ends: 2058 [2020-10-14 03:39:09,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:39:09,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2020-10-14 03:39:09,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 1373. [2020-10-14 03:39:09,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1373 states. [2020-10-14 03:39:09,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1958 transitions. [2020-10-14 03:39:09,093 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1958 transitions. Word has length 112 [2020-10-14 03:39:09,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:09,094 INFO L479 AbstractCegarLoop]: Abstraction has 1373 states and 1958 transitions. [2020-10-14 03:39:09,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:09,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1958 transitions. [2020-10-14 03:39:09,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 03:39:09,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:09,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:09,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:39:09,097 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:09,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:09,097 INFO L82 PathProgramCache]: Analyzing trace with hash -2058190665, now seen corresponding path program 1 times [2020-10-14 03:39:09,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:09,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207064069] [2020-10-14 03:39:09,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:09,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:09,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:09,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:09,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 03:39:09,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:39:09,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 532 [2020-10-14 03:39:09,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:09,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 03:39:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 03:39:09,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:09,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:09,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:09,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:09,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:09,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:09,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:39:09,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:09,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:09,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:09,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:09,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:09,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:09,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:09,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 03:39:09,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:09,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:39:09,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:09,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:09,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:09,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:09,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:39:09,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:09,881 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:09,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207064069] [2020-10-14 03:39:09,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:09,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:39:09,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081882854] [2020-10-14 03:39:09,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:39:09,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:09,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:39:09,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:39:09,887 INFO L87 Difference]: Start difference. First operand 1373 states and 1958 transitions. Second operand 5 states. [2020-10-14 03:39:14,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:14,765 INFO L93 Difference]: Finished difference Result 3425 states and 5023 transitions. [2020-10-14 03:39:14,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:39:14,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-14 03:39:14,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:14,782 INFO L225 Difference]: With dead ends: 3425 [2020-10-14 03:39:14,783 INFO L226 Difference]: Without dead ends: 2058 [2020-10-14 03:39:14,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:39:14,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2020-10-14 03:39:14,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 2054. [2020-10-14 03:39:14,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2054 states. [2020-10-14 03:39:14,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 2842 transitions. [2020-10-14 03:39:14,867 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 2842 transitions. Word has length 116 [2020-10-14 03:39:14,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:14,870 INFO L479 AbstractCegarLoop]: Abstraction has 2054 states and 2842 transitions. [2020-10-14 03:39:14,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:39:14,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 2842 transitions. [2020-10-14 03:39:14,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 03:39:14,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:14,874 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:14,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:39:14,874 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:14,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:14,875 INFO L82 PathProgramCache]: Analyzing trace with hash 622609155, now seen corresponding path program 1 times [2020-10-14 03:39:14,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:14,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393457073] [2020-10-14 03:39:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:14,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:15,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:15,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 03:39:15,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:15,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-14 03:39:15,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:15,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:39:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:39:15,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 03:39:15,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:15,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:15,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:15,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:15,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:15,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:15,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:39:15,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:15,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:15,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:15,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:15,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:39:15,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:15,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:15,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:15,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:15,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:39:15,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:15,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 03:39:15,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:15,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:15,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:15,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:15,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:39:15,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:39:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:15,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393457073] [2020-10-14 03:39:15,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:39:15,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:39:15,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996803039] [2020-10-14 03:39:15,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:39:16,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:16,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:39:16,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:39:16,003 INFO L87 Difference]: Start difference. First operand 2054 states and 2842 transitions. Second operand 7 states. [2020-10-14 03:39:21,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:21,048 INFO L93 Difference]: Finished difference Result 4828 states and 6699 transitions. [2020-10-14 03:39:21,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:39:21,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-14 03:39:21,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:21,064 INFO L225 Difference]: With dead ends: 4828 [2020-10-14 03:39:21,065 INFO L226 Difference]: Without dead ends: 2780 [2020-10-14 03:39:21,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:39:21,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2020-10-14 03:39:21,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2766. [2020-10-14 03:39:21,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2766 states. [2020-10-14 03:39:21,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 3571 transitions. [2020-10-14 03:39:21,147 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 3571 transitions. Word has length 138 [2020-10-14 03:39:21,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:21,147 INFO L479 AbstractCegarLoop]: Abstraction has 2766 states and 3571 transitions. [2020-10-14 03:39:21,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:39:21,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 3571 transitions. [2020-10-14 03:39:21,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 03:39:21,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:21,150 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:21,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:39:21,151 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:21,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:21,151 INFO L82 PathProgramCache]: Analyzing trace with hash 953237351, now seen corresponding path program 1 times [2020-10-14 03:39:21,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:21,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369932712] [2020-10-14 03:39:21,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:21,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:21,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:21,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:21,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:22,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:24,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:24,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 03:39:24,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:39:24,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3107 [2020-10-14 03:39:24,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:24,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:24,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:24,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 03:39:24,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:39:24,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:24,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:24,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:24,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:24,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:24,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:24,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:39:24,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:24,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:24,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:24,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:24,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:24,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:24,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:39:24,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:24,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 03:39:24,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:24,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:24,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:24,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:24,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 03:39:24,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:24,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-14 03:39:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:24,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:24,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:24,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:39:24,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:24,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:39:24,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:24,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:24,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:24,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:24,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:39:24,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:24,617 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:39:24,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369932712] [2020-10-14 03:39:24,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:24,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:39:24,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958283901] [2020-10-14 03:39:24,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:39:24,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:24,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:39:24,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:39:24,620 INFO L87 Difference]: Start difference. First operand 2766 states and 3571 transitions. Second operand 7 states. [2020-10-14 03:39:29,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:29,577 INFO L93 Difference]: Finished difference Result 6603 states and 8743 transitions. [2020-10-14 03:39:29,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:39:29,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-10-14 03:39:29,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:29,601 INFO L225 Difference]: With dead ends: 6603 [2020-10-14 03:39:29,601 INFO L226 Difference]: Without dead ends: 3843 [2020-10-14 03:39:29,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:39:29,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2020-10-14 03:39:29,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3811. [2020-10-14 03:39:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3811 states. [2020-10-14 03:39:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3811 states to 3811 states and 4800 transitions. [2020-10-14 03:39:29,716 INFO L78 Accepts]: Start accepts. Automaton has 3811 states and 4800 transitions. Word has length 174 [2020-10-14 03:39:29,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:29,717 INFO L479 AbstractCegarLoop]: Abstraction has 3811 states and 4800 transitions. [2020-10-14 03:39:29,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:39:29,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3811 states and 4800 transitions. [2020-10-14 03:39:29,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 03:39:29,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:29,723 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:29,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:39:29,724 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:29,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:29,726 INFO L82 PathProgramCache]: Analyzing trace with hash -2132211437, now seen corresponding path program 1 times [2020-10-14 03:39:29,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:29,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540976284] [2020-10-14 03:39:29,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:29,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:30,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:30,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 03:39:30,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:30,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-14 03:39:30,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:30,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:39:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:39:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-14 03:39:30,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:30,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:30,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:30,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:30,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:30,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:39:30,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:30,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:30,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:30,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:39:30,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:30,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:30,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:30,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:30,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 03:39:30,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:30,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-14 03:39:30,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:30,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:30,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:30,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:30,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 03:39:30,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:30,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540976284] [2020-10-14 03:39:30,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:39:30,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:39:30,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236530065] [2020-10-14 03:39:30,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:39:30,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:30,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:39:30,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:39:30,849 INFO L87 Difference]: Start difference. First operand 3811 states and 4800 transitions. Second operand 7 states. [2020-10-14 03:39:35,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:35,395 INFO L93 Difference]: Finished difference Result 10475 states and 13595 transitions. [2020-10-14 03:39:35,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:39:35,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2020-10-14 03:39:35,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:35,424 INFO L225 Difference]: With dead ends: 10475 [2020-10-14 03:39:35,424 INFO L226 Difference]: Without dead ends: 6670 [2020-10-14 03:39:35,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:39:35,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6670 states. [2020-10-14 03:39:35,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6670 to 6610. [2020-10-14 03:39:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6610 states. [2020-10-14 03:39:35,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6610 states to 6610 states and 7989 transitions. [2020-10-14 03:39:35,624 INFO L78 Accepts]: Start accepts. Automaton has 6610 states and 7989 transitions. Word has length 210 [2020-10-14 03:39:35,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:35,624 INFO L479 AbstractCegarLoop]: Abstraction has 6610 states and 7989 transitions. [2020-10-14 03:39:35,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:39:35,625 INFO L276 IsEmpty]: Start isEmpty. Operand 6610 states and 7989 transitions. [2020-10-14 03:39:35,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-14 03:39:35,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:35,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:35,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:39:35,631 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:35,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:35,632 INFO L82 PathProgramCache]: Analyzing trace with hash -118957466, now seen corresponding path program 1 times [2020-10-14 03:39:35,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:35,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377970104] [2020-10-14 03:39:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:35,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:36,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:37,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:37,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-14 03:39:37,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:39:37,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2255 [2020-10-14 03:39:37,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:37,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:37,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:39:37,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:39:37,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-14 03:39:37,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:38,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:38,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:38,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:38,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:38,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:38,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:39:38,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:38,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:38,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:38,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:38,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:39:38,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:39:38,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:38,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:38,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 03:39:38,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:38,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-14 03:39:38,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:38,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 03:39:38,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:39:38,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377970104] [2020-10-14 03:39:38,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:39:38,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:39:38,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018434755] [2020-10-14 03:39:38,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:39:38,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:38,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:39:38,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:39:38,888 INFO L87 Difference]: Start difference. First operand 6610 states and 7989 transitions. Second operand 7 states. [2020-10-14 03:39:43,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:43,634 INFO L93 Difference]: Finished difference Result 13991 states and 16946 transitions. [2020-10-14 03:39:43,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:39:43,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-14 03:39:43,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:43,666 INFO L225 Difference]: With dead ends: 13991 [2020-10-14 03:39:43,667 INFO L226 Difference]: Without dead ends: 7387 [2020-10-14 03:39:43,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:39:43,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7387 states. [2020-10-14 03:39:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7387 to 7338. [2020-10-14 03:39:43,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7338 states. [2020-10-14 03:39:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7338 states to 7338 states and 8809 transitions. [2020-10-14 03:39:43,898 INFO L78 Accepts]: Start accepts. Automaton has 7338 states and 8809 transitions. Word has length 291 [2020-10-14 03:39:43,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:43,899 INFO L479 AbstractCegarLoop]: Abstraction has 7338 states and 8809 transitions. [2020-10-14 03:39:43,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:39:43,899 INFO L276 IsEmpty]: Start isEmpty. Operand 7338 states and 8809 transitions. [2020-10-14 03:39:43,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-14 03:39:43,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:43,906 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:43,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:39:43,907 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:43,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:43,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1698714854, now seen corresponding path program 1 times [2020-10-14 03:39:43,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:43,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383492334] [2020-10-14 03:39:43,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:44,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:44,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:45,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:47,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:47,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-14 03:39:47,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:39:47,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3051 [2020-10-14 03:39:47,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:47,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 03:39:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-14 03:39:47,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:47,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:47,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:47,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:47,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:47,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:47,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:39:47,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:47,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:47,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:47,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:47,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:47,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:47,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:47,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:47,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:47,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:39:47,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:47,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 03:39:47,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:47,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:47,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:47,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:47,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 03:39:47,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:47,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 03:39:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:47,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:47,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:47,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-14 03:39:47,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:47,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-14 03:39:47,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:47,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:47,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:39:47,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:47,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-14 03:39:47,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:39:47,850 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:39:47,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383492334] [2020-10-14 03:39:47,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:47,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:39:47,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469783724] [2020-10-14 03:39:47,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:39:47,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:47,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:39:47,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:39:47,857 INFO L87 Difference]: Start difference. First operand 7338 states and 8809 transitions. Second operand 7 states. [2020-10-14 03:39:52,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:39:52,013 INFO L93 Difference]: Finished difference Result 17141 states and 21122 transitions. [2020-10-14 03:39:52,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:39:52,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 339 [2020-10-14 03:39:52,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:39:52,040 INFO L225 Difference]: With dead ends: 17141 [2020-10-14 03:39:52,041 INFO L226 Difference]: Without dead ends: 9351 [2020-10-14 03:39:52,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 03:39:52,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9351 states. [2020-10-14 03:39:52,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9351 to 8297. [2020-10-14 03:39:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8297 states. [2020-10-14 03:39:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8297 states to 8297 states and 9041 transitions. [2020-10-14 03:39:52,214 INFO L78 Accepts]: Start accepts. Automaton has 8297 states and 9041 transitions. Word has length 339 [2020-10-14 03:39:52,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:39:52,214 INFO L479 AbstractCegarLoop]: Abstraction has 8297 states and 9041 transitions. [2020-10-14 03:39:52,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:39:52,214 INFO L276 IsEmpty]: Start isEmpty. Operand 8297 states and 9041 transitions. [2020-10-14 03:39:52,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-14 03:39:52,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:39:52,223 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:39:52,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:39:52,224 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:39:52,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:39:52,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1071948078, now seen corresponding path program 1 times [2020-10-14 03:39:52,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:39:52,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176972966] [2020-10-14 03:39:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:39:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:52,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:52,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:54,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:54,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-14 03:39:54,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:39:54,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2376 [2020-10-14 03:39:54,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:54,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 03:39:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-14 03:39:54,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 03:39:54,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:54,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:39:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:54,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:54,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:54,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:39:54,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:54,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:39:54,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:54,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:39:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:39:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:54,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:39:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:54,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:54,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:54,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:39:54,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:54,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 03:39:54,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:54,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:39:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:39:54,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-14 03:39:54,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:39:55,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:39:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:39:55,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:39:55,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:39:55,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 03:39:55,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:39:55,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-14 03:39:55,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:39:55,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:39:55,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:39:55,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:39:55,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 03:39:55,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:39:55,775 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 198 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:39:55,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176972966] [2020-10-14 03:39:55,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:39:55,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:39:55,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221777198] [2020-10-14 03:39:55,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:39:55,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:39:55,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:39:55,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:39:55,779 INFO L87 Difference]: Start difference. First operand 8297 states and 9041 transitions. Second operand 8 states. [2020-10-14 03:40:01,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:01,172 INFO L93 Difference]: Finished difference Result 18640 states and 20401 transitions. [2020-10-14 03:40:01,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:40:01,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 449 [2020-10-14 03:40:01,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:01,205 INFO L225 Difference]: With dead ends: 18640 [2020-10-14 03:40:01,205 INFO L226 Difference]: Without dead ends: 10682 [2020-10-14 03:40:01,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:40:01,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10682 states. [2020-10-14 03:40:01,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10682 to 10334. [2020-10-14 03:40:01,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10334 states. [2020-10-14 03:40:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10334 states to 10334 states and 11295 transitions. [2020-10-14 03:40:01,485 INFO L78 Accepts]: Start accepts. Automaton has 10334 states and 11295 transitions. Word has length 449 [2020-10-14 03:40:01,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:01,487 INFO L479 AbstractCegarLoop]: Abstraction has 10334 states and 11295 transitions. [2020-10-14 03:40:01,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:40:01,487 INFO L276 IsEmpty]: Start isEmpty. Operand 10334 states and 11295 transitions. [2020-10-14 03:40:01,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-14 03:40:01,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:01,512 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:40:01,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:40:01,513 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:01,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:01,513 INFO L82 PathProgramCache]: Analyzing trace with hash 35028447, now seen corresponding path program 1 times [2020-10-14 03:40:01,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:01,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225615324] [2020-10-14 03:40:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:01,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:01,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:03,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:05,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:05,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 520 [2020-10-14 03:40:05,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:40:05,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3861 [2020-10-14 03:40:05,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:05,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:05,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-14 03:40:05,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 03:40:05,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:05,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:05,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:05,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:05,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:05,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:05,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:40:05,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:05,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:05,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:05,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:05,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:05,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:05,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:40:05,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:05,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 03:40:05,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:05,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:05,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-14 03:40:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:05,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:40:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:05,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:05,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:05,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:40:05,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:05,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 03:40:05,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:05,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 03:40:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:06,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-14 03:40:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:06,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:06,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:06,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:40:06,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:06,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 03:40:06,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:06,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:06,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:06,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 03:40:06,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:06,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 190 proven. 110 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-14 03:40:06,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225615324] [2020-10-14 03:40:06,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:06,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:40:06,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871705408] [2020-10-14 03:40:06,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:40:06,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:06,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:40:06,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:40:06,244 INFO L87 Difference]: Start difference. First operand 10334 states and 11295 transitions. Second operand 7 states. [2020-10-14 03:40:10,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:10,695 INFO L93 Difference]: Finished difference Result 21728 states and 23909 transitions. [2020-10-14 03:40:10,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:40:10,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 506 [2020-10-14 03:40:10,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:10,736 INFO L225 Difference]: With dead ends: 21728 [2020-10-14 03:40:10,736 INFO L226 Difference]: Without dead ends: 11395 [2020-10-14 03:40:10,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:40:10,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11395 states. [2020-10-14 03:40:10,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11395 to 10692. [2020-10-14 03:40:10,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10692 states. [2020-10-14 03:40:10,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10692 states to 10692 states and 11701 transitions. [2020-10-14 03:40:10,967 INFO L78 Accepts]: Start accepts. Automaton has 10692 states and 11701 transitions. Word has length 506 [2020-10-14 03:40:10,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:10,968 INFO L479 AbstractCegarLoop]: Abstraction has 10692 states and 11701 transitions. [2020-10-14 03:40:10,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:10,969 INFO L276 IsEmpty]: Start isEmpty. Operand 10692 states and 11701 transitions. [2020-10-14 03:40:10,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2020-10-14 03:40:10,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:10,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:40:10,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:40:10,984 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:10,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:10,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1026311145, now seen corresponding path program 1 times [2020-10-14 03:40:10,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:10,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555244703] [2020-10-14 03:40:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:11,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:11,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:12,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:12,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-14 03:40:12,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:40:12,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1836 [2020-10-14 03:40:12,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:12,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:12,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:12,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-14 03:40:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-14 03:40:12,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:13,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:13,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:13,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:13,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:13,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:13,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:40:13,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:13,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:40:13,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:13,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:13,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:13,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:40:13,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:13,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 03:40:13,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:13,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:13,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 03:40:13,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:13,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:40:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:13,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:13,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:13,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 03:40:13,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:13,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 03:40:13,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:13,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:13,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 03:40:13,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:40:14,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555244703] [2020-10-14 03:40:14,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:14,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:40:14,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379722008] [2020-10-14 03:40:14,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:40:14,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:14,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:40:14,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:40:14,244 INFO L87 Difference]: Start difference. First operand 10692 states and 11701 transitions. Second operand 7 states. [2020-10-14 03:40:18,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:18,261 INFO L93 Difference]: Finished difference Result 21082 states and 23132 transitions. [2020-10-14 03:40:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 03:40:18,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 538 [2020-10-14 03:40:18,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:18,285 INFO L225 Difference]: With dead ends: 21082 [2020-10-14 03:40:18,286 INFO L226 Difference]: Without dead ends: 10735 [2020-10-14 03:40:18,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 03:40:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10735 states. [2020-10-14 03:40:18,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10735 to 10700. [2020-10-14 03:40:18,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10700 states. [2020-10-14 03:40:18,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10700 states to 10700 states and 11714 transitions. [2020-10-14 03:40:18,478 INFO L78 Accepts]: Start accepts. Automaton has 10700 states and 11714 transitions. Word has length 538 [2020-10-14 03:40:18,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:18,479 INFO L479 AbstractCegarLoop]: Abstraction has 10700 states and 11714 transitions. [2020-10-14 03:40:18,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:18,479 INFO L276 IsEmpty]: Start isEmpty. Operand 10700 states and 11714 transitions. [2020-10-14 03:40:18,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2020-10-14 03:40:18,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:18,494 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:40:18,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:40:18,494 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:18,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:18,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1810813863, now seen corresponding path program 1 times [2020-10-14 03:40:18,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:18,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133484788] [2020-10-14 03:40:18,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:18,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:19,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:19,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 558 [2020-10-14 03:40:19,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:19,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 701 [2020-10-14 03:40:19,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:19,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 03:40:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-14 03:40:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 300 [2020-10-14 03:40:19,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:19,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:19,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:19,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:19,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:19,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:19,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:40:19,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:19,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:19,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:19,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:19,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:19,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:19,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:19,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:19,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:40:19,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 03:40:19,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:19,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 03:40:19,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:19,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:40:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:19,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:20,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:20,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 03:40:20,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:20,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-14 03:40:20,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:20,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:40:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-14 03:40:20,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 266 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:40:20,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133484788] [2020-10-14 03:40:20,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:20,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:40:20,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116563086] [2020-10-14 03:40:20,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:40:20,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:20,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:40:20,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:40:20,313 INFO L87 Difference]: Start difference. First operand 10700 states and 11714 transitions. Second operand 8 states. [2020-10-14 03:40:25,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:25,542 INFO L93 Difference]: Finished difference Result 24849 states and 27375 transitions. [2020-10-14 03:40:25,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:40:25,544 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 546 [2020-10-14 03:40:25,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:25,582 INFO L225 Difference]: With dead ends: 24849 [2020-10-14 03:40:25,583 INFO L226 Difference]: Without dead ends: 14153 [2020-10-14 03:40:25,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:40:25,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14153 states. [2020-10-14 03:40:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14153 to 13795. [2020-10-14 03:40:25,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13795 states. [2020-10-14 03:40:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13795 states to 13795 states and 15246 transitions. [2020-10-14 03:40:25,822 INFO L78 Accepts]: Start accepts. Automaton has 13795 states and 15246 transitions. Word has length 546 [2020-10-14 03:40:25,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:25,823 INFO L479 AbstractCegarLoop]: Abstraction has 13795 states and 15246 transitions. [2020-10-14 03:40:25,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:40:25,823 INFO L276 IsEmpty]: Start isEmpty. Operand 13795 states and 15246 transitions. [2020-10-14 03:40:25,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2020-10-14 03:40:25,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:25,836 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:40:25,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:40:25,837 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:25,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:25,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1171844205, now seen corresponding path program 1 times [2020-10-14 03:40:25,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:25,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453521257] [2020-10-14 03:40:25,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:26,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:26,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:26,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 652 [2020-10-14 03:40:26,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:26,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-14 03:40:26,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:26,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:26,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:26,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-14 03:40:26,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-14 03:40:26,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:26,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:26,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:26,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:26,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:26,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:26,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:40:26,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:26,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:26,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:26,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:26,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:26,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:26,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:26,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:40:26,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:26,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 03:40:26,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:26,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:26,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:26,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:40:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:26,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:26,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:26,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 03:40:26,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:26,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:40:26,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:26,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:26,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 03:40:26,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:26,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 03:40:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:26,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:27,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:27,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 03:40:27,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:27,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 03:40:27,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:27,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:27,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 03:40:27,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 406 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-14 03:40:27,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453521257] [2020-10-14 03:40:27,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:27,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:40:27,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699914916] [2020-10-14 03:40:27,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:40:27,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:27,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:40:27,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:40:27,549 INFO L87 Difference]: Start difference. First operand 13795 states and 15246 transitions. Second operand 7 states. [2020-10-14 03:40:31,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:31,310 INFO L93 Difference]: Finished difference Result 30323 states and 33647 transitions. [2020-10-14 03:40:31,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:40:31,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 638 [2020-10-14 03:40:31,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:31,349 INFO L225 Difference]: With dead ends: 30323 [2020-10-14 03:40:31,350 INFO L226 Difference]: Without dead ends: 16873 [2020-10-14 03:40:31,367 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 03:40:31,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16873 states. [2020-10-14 03:40:31,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16873 to 16181. [2020-10-14 03:40:31,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16181 states. [2020-10-14 03:40:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16181 states to 16181 states and 17885 transitions. [2020-10-14 03:40:31,637 INFO L78 Accepts]: Start accepts. Automaton has 16181 states and 17885 transitions. Word has length 638 [2020-10-14 03:40:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:31,638 INFO L479 AbstractCegarLoop]: Abstraction has 16181 states and 17885 transitions. [2020-10-14 03:40:31,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:31,638 INFO L276 IsEmpty]: Start isEmpty. Operand 16181 states and 17885 transitions. [2020-10-14 03:40:31,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2020-10-14 03:40:31,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:31,650 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:40:31,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:40:31,651 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:31,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:31,651 INFO L82 PathProgramCache]: Analyzing trace with hash 400671367, now seen corresponding path program 1 times [2020-10-14 03:40:31,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:31,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631957506] [2020-10-14 03:40:31,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:31,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:32,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:32,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:33,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:33,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 664 [2020-10-14 03:40:33,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:40:33,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2216 [2020-10-14 03:40:33,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:33,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-14 03:40:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 03:40:33,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:34,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:34,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:34,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:34,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:34,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:34,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:40:34,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:34,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:34,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:34,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:34,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:34,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:34,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:34,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:34,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:40:34,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:34,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 03:40:34,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:34,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:34,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:34,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:34,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:34,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:34,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:40:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:34,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:34,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:34,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 03:40:34,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:34,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 03:40:34,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:34,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:34,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:34,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:34,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 03:40:34,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:34,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 03:40:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:34,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:34,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:34,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 03:40:34,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:34,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 03:40:34,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:34,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:34,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:34,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:34,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 03:40:34,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:34,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2020-10-14 03:40:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:34,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:34,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:34,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:40:34,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:34,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 03:40:34,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:34,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 03:40:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:34,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 350 proven. 110 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2020-10-14 03:40:34,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631957506] [2020-10-14 03:40:34,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:34,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:40:34,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58663402] [2020-10-14 03:40:34,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:40:34,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:34,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:40:34,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:40:34,749 INFO L87 Difference]: Start difference. First operand 16181 states and 17885 transitions. Second operand 7 states. [2020-10-14 03:40:38,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:38,102 INFO L93 Difference]: Finished difference Result 36433 states and 40509 transitions. [2020-10-14 03:40:38,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:40:38,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 648 [2020-10-14 03:40:38,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:38,144 INFO L225 Difference]: With dead ends: 36433 [2020-10-14 03:40:38,144 INFO L226 Difference]: Without dead ends: 20597 [2020-10-14 03:40:38,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:40:38,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20597 states. [2020-10-14 03:40:38,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20597 to 20246. [2020-10-14 03:40:38,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20246 states. [2020-10-14 03:40:38,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20246 states to 20246 states and 22371 transitions. [2020-10-14 03:40:38,496 INFO L78 Accepts]: Start accepts. Automaton has 20246 states and 22371 transitions. Word has length 648 [2020-10-14 03:40:38,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:38,497 INFO L479 AbstractCegarLoop]: Abstraction has 20246 states and 22371 transitions. [2020-10-14 03:40:38,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 20246 states and 22371 transitions. [2020-10-14 03:40:38,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2020-10-14 03:40:38,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:38,517 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:40:38,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 03:40:38,518 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:38,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:38,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1547432019, now seen corresponding path program 1 times [2020-10-14 03:40:38,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:38,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542052418] [2020-10-14 03:40:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:38,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:39,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:39,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 686 [2020-10-14 03:40:39,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:39,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-10-14 03:40:39,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:39,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-14 03:40:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 03:40:39,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:39,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:39,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:39,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:39,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:39,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:39,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:40:39,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:39,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:39,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:39,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:39,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:39,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:39,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:40:39,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:39,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 03:40:39,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:39,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:39,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:39,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:39,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:40:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:39,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:39,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:39,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 03:40:39,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 03:40:39,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:39,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-14 03:40:39,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:39,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 03:40:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:39,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:39,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:39,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 03:40:39,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:39,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 03:40:39,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:39,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:39,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:39,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 03:40:39,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 425 proven. 2 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-14 03:40:40,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542052418] [2020-10-14 03:40:40,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:40,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:40:40,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72421311] [2020-10-14 03:40:40,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:40:40,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:40,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:40:40,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:40:40,061 INFO L87 Difference]: Start difference. First operand 20246 states and 22371 transitions. Second operand 7 states. [2020-10-14 03:40:44,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:44,179 INFO L93 Difference]: Finished difference Result 40534 states and 44871 transitions. [2020-10-14 03:40:44,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:40:44,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 672 [2020-10-14 03:40:44,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:44,223 INFO L225 Difference]: With dead ends: 40534 [2020-10-14 03:40:44,223 INFO L226 Difference]: Without dead ends: 20292 [2020-10-14 03:40:44,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:40:44,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20292 states. [2020-10-14 03:40:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20292 to 18916. [2020-10-14 03:40:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18916 states. [2020-10-14 03:40:44,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18916 states to 18916 states and 20424 transitions. [2020-10-14 03:40:44,522 INFO L78 Accepts]: Start accepts. Automaton has 18916 states and 20424 transitions. Word has length 672 [2020-10-14 03:40:44,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:44,523 INFO L479 AbstractCegarLoop]: Abstraction has 18916 states and 20424 transitions. [2020-10-14 03:40:44,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:44,523 INFO L276 IsEmpty]: Start isEmpty. Operand 18916 states and 20424 transitions. [2020-10-14 03:40:44,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2020-10-14 03:40:44,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:44,538 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:40:44,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 03:40:44,538 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:44,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:44,539 INFO L82 PathProgramCache]: Analyzing trace with hash -122471310, now seen corresponding path program 1 times [2020-10-14 03:40:44,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:44,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113945467] [2020-10-14 03:40:44,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:44,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:45,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:45,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 709 [2020-10-14 03:40:45,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:45,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-10-14 03:40:45,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:45,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:45,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:45,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-14 03:40:45,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-14 03:40:45,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:45,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:45,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:45,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:45,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:45,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:45,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:40:45,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:45,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:45,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:45,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:45,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:45,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:45,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:45,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:45,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:45,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:40:45,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:45,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 03:40:45,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:45,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:45,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:45,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:40:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:45,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:45,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:45,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:40:45,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:45,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 03:40:45,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:45,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:45,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:45,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:45,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 03:40:45,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:45,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 03:40:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:45,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:45,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:45,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 03:40:45,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:45,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 03:40:45,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:45,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:45,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:40:45,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:45,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 03:40:45,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 463 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-14 03:40:46,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113945467] [2020-10-14 03:40:46,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:46,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:40:46,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237080801] [2020-10-14 03:40:46,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:40:46,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:46,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:40:46,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:40:46,865 INFO L87 Difference]: Start difference. First operand 18916 states and 20424 transitions. Second operand 7 states. [2020-10-14 03:40:50,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:40:50,959 INFO L93 Difference]: Finished difference Result 38849 states and 42185 transitions. [2020-10-14 03:40:50,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 03:40:50,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 695 [2020-10-14 03:40:50,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:40:51,004 INFO L225 Difference]: With dead ends: 38849 [2020-10-14 03:40:51,004 INFO L226 Difference]: Without dead ends: 20278 [2020-10-14 03:40:51,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 03:40:51,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20278 states. [2020-10-14 03:40:51,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20278 to 19933. [2020-10-14 03:40:51,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19933 states. [2020-10-14 03:40:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19933 states to 19933 states and 21450 transitions. [2020-10-14 03:40:51,305 INFO L78 Accepts]: Start accepts. Automaton has 19933 states and 21450 transitions. Word has length 695 [2020-10-14 03:40:51,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:40:51,305 INFO L479 AbstractCegarLoop]: Abstraction has 19933 states and 21450 transitions. [2020-10-14 03:40:51,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:40:51,306 INFO L276 IsEmpty]: Start isEmpty. Operand 19933 states and 21450 transitions. [2020-10-14 03:40:51,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2020-10-14 03:40:51,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:40:51,317 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:40:51,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 03:40:51,318 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:40:51,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:40:51,318 INFO L82 PathProgramCache]: Analyzing trace with hash 2129582819, now seen corresponding path program 1 times [2020-10-14 03:40:51,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:40:51,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359810986] [2020-10-14 03:40:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:40:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:51,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:52,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:52,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 722 [2020-10-14 03:40:52,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:52,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-10-14 03:40:52,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:52,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:52,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 03:40:52,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-14 03:40:52,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 305 [2020-10-14 03:40:52,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:52,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:40:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:52,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:52,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:52,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:40:52,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:52,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:40:52,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:52,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:52,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:52,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:40:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:52,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:52,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:52,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:40:52,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 03:40:52,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:52,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:40:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:40:52,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:52,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:40:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:52,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:52,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:40:52,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:52,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 03:40:52,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:52,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:40:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:40:52,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 03:40:52,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:52,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 03:40:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:40:53,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:40:53,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:40:53,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 03:40:53,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:40:53,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-14 03:40:53,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:40:53,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:40:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:40:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:40:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-14 03:40:53,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:40:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 444 proven. 21 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-14 03:40:53,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359810986] [2020-10-14 03:40:53,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:40:53,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:40:53,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371261729] [2020-10-14 03:40:53,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:40:53,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:40:53,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:40:53,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:40:53,652 INFO L87 Difference]: Start difference. First operand 19933 states and 21450 transitions. Second operand 8 states. [2020-10-14 03:41:00,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:00,296 INFO L93 Difference]: Finished difference Result 47374 states and 51034 transitions. [2020-10-14 03:41:00,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:41:00,298 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 708 [2020-10-14 03:41:00,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:00,339 INFO L225 Difference]: With dead ends: 47374 [2020-10-14 03:41:00,339 INFO L226 Difference]: Without dead ends: 27379 [2020-10-14 03:41:00,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:41:00,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27379 states. [2020-10-14 03:41:00,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27379 to 23634. [2020-10-14 03:41:00,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23634 states. [2020-10-14 03:41:00,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23634 states to 23634 states and 25385 transitions. [2020-10-14 03:41:00,714 INFO L78 Accepts]: Start accepts. Automaton has 23634 states and 25385 transitions. Word has length 708 [2020-10-14 03:41:00,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:00,715 INFO L479 AbstractCegarLoop]: Abstraction has 23634 states and 25385 transitions. [2020-10-14 03:41:00,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:41:00,715 INFO L276 IsEmpty]: Start isEmpty. Operand 23634 states and 25385 transitions. [2020-10-14 03:41:00,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2020-10-14 03:41:00,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:00,729 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:41:00,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 03:41:00,729 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:00,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:00,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1116177482, now seen corresponding path program 1 times [2020-10-14 03:41:00,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:00,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724527276] [2020-10-14 03:41:00,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:02,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:02,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 777 [2020-10-14 03:41:02,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:02,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1293 [2020-10-14 03:41:02,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:02,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:02,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 03:41:02,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-14 03:41:02,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 03:41:02,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:02,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:02,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:02,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:02,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:02,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:02,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:41:02,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:02,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:02,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:02,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:02,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:02,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:02,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:02,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:02,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:41:02,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 03:41:02,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:02,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:02,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:02,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:02,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:41:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:02,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:02,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:02,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:41:02,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:02,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 03:41:02,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:02,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:02,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:02,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 03:41:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:02,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:02,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 03:41:02,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:02,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 03:41:02,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:02,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:02,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-14 03:41:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:02,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-14 03:41:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:02,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:02,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:02,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:41:02,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:02,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 03:41:02,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:02,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:41:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:41:02,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 390 proven. 26 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-14 03:41:03,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724527276] [2020-10-14 03:41:03,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:03,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:41:03,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51478209] [2020-10-14 03:41:03,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:41:03,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:03,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:41:03,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:41:03,380 INFO L87 Difference]: Start difference. First operand 23634 states and 25385 transitions. Second operand 8 states. [2020-10-14 03:41:11,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:11,766 INFO L93 Difference]: Finished difference Result 49333 states and 53030 transitions. [2020-10-14 03:41:11,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:41:11,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 761 [2020-10-14 03:41:11,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:11,806 INFO L225 Difference]: With dead ends: 49333 [2020-10-14 03:41:11,806 INFO L226 Difference]: Without dead ends: 25703 [2020-10-14 03:41:11,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-14 03:41:11,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25703 states. [2020-10-14 03:41:12,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25703 to 25352. [2020-10-14 03:41:12,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25352 states. [2020-10-14 03:41:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25352 states to 25352 states and 27157 transitions. [2020-10-14 03:41:12,133 INFO L78 Accepts]: Start accepts. Automaton has 25352 states and 27157 transitions. Word has length 761 [2020-10-14 03:41:12,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:12,134 INFO L479 AbstractCegarLoop]: Abstraction has 25352 states and 27157 transitions. [2020-10-14 03:41:12,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:41:12,134 INFO L276 IsEmpty]: Start isEmpty. Operand 25352 states and 27157 transitions. [2020-10-14 03:41:12,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2020-10-14 03:41:12,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:12,152 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:41:12,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 03:41:12,153 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:12,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:12,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1514388434, now seen corresponding path program 1 times [2020-10-14 03:41:12,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:12,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301301805] [2020-10-14 03:41:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:12,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:13,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:13,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 869 [2020-10-14 03:41:13,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:13,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1343 [2020-10-14 03:41:13,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:13,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 03:41:13,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-14 03:41:13,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-14 03:41:13,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:13,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:13,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:13,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:13,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:13,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:13,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:41:13,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:13,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:13,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:13,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:13,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:13,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:13,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:41:13,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:13,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 03:41:13,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:13,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:13,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:13,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:13,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:13,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:14,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:41:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:14,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:14,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:14,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 03:41:14,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:14,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 03:41:14,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:14,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:14,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:14,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:14,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:14,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-14 03:41:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:14,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:14,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:14,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 03:41:14,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:14,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 03:41:14,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:14,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 03:41:14,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:14,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-14 03:41:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:14,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:14,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 03:41:14,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:14,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 03:41:14,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:14,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:41:14,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 03:41:14,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 622 proven. 22 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2020-10-14 03:41:15,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301301805] [2020-10-14 03:41:15,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:15,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:41:15,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583188095] [2020-10-14 03:41:15,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:41:15,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:15,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:41:15,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:41:15,185 INFO L87 Difference]: Start difference. First operand 25352 states and 27157 transitions. Second operand 8 states. [2020-10-14 03:41:21,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:21,556 INFO L93 Difference]: Finished difference Result 55836 states and 59956 transitions. [2020-10-14 03:41:21,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:41:21,558 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 853 [2020-10-14 03:41:21,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:21,601 INFO L225 Difference]: With dead ends: 55836 [2020-10-14 03:41:21,601 INFO L226 Difference]: Without dead ends: 30476 [2020-10-14 03:41:21,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:41:21,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30476 states. [2020-10-14 03:41:21,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30476 to 28774. [2020-10-14 03:41:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28774 states. [2020-10-14 03:41:21,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28774 states to 28774 states and 31025 transitions. [2020-10-14 03:41:21,968 INFO L78 Accepts]: Start accepts. Automaton has 28774 states and 31025 transitions. Word has length 853 [2020-10-14 03:41:21,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:21,969 INFO L479 AbstractCegarLoop]: Abstraction has 28774 states and 31025 transitions. [2020-10-14 03:41:21,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:41:21,969 INFO L276 IsEmpty]: Start isEmpty. Operand 28774 states and 31025 transitions. [2020-10-14 03:41:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2020-10-14 03:41:21,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:21,999 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:41:21,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 03:41:21,999 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:21,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:21,999 INFO L82 PathProgramCache]: Analyzing trace with hash 416870675, now seen corresponding path program 1 times [2020-10-14 03:41:22,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:22,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711328774] [2020-10-14 03:41:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:22,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:23,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:23,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 930 [2020-10-14 03:41:23,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:23,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-10-14 03:41:23,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:23,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:23,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:23,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-14 03:41:23,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-14 03:41:23,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:23,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:23,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:23,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:23,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:23,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:23,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:41:23,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:23,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:23,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:23,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:23,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:23,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:23,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:23,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:23,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:41:23,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:23,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 03:41:23,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:23,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:23,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:23,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:23,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:23,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:23,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 03:41:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:23,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:23,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:23,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:41:23,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:23,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 03:41:23,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:23,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:23,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:23,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:23,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 03:41:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:23,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:23,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 03:41:23,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:23,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-14 03:41:23,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:23,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-14 03:41:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:23,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-14 03:41:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:23,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:24,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:24,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 03:41:24,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:24,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 03:41:24,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:24,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:24,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:24,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:24,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 03:41:24,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 704 proven. 2 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-14 03:41:24,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711328774] [2020-10-14 03:41:24,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:24,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:41:24,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141705468] [2020-10-14 03:41:24,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:41:24,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:24,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:41:24,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:41:24,827 INFO L87 Difference]: Start difference. First operand 28774 states and 31025 transitions. Second operand 7 states. [2020-10-14 03:41:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:29,343 INFO L93 Difference]: Finished difference Result 57215 states and 61720 transitions. [2020-10-14 03:41:29,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:41:29,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 914 [2020-10-14 03:41:29,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:29,386 INFO L225 Difference]: With dead ends: 57215 [2020-10-14 03:41:29,386 INFO L226 Difference]: Without dead ends: 28786 [2020-10-14 03:41:29,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:41:29,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28786 states. [2020-10-14 03:41:29,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28786 to 28437. [2020-10-14 03:41:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28437 states. [2020-10-14 03:41:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28437 states to 28437 states and 30622 transitions. [2020-10-14 03:41:29,683 INFO L78 Accepts]: Start accepts. Automaton has 28437 states and 30622 transitions. Word has length 914 [2020-10-14 03:41:29,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:29,684 INFO L479 AbstractCegarLoop]: Abstraction has 28437 states and 30622 transitions. [2020-10-14 03:41:29,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:41:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 28437 states and 30622 transitions. [2020-10-14 03:41:29,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2020-10-14 03:41:29,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:29,700 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 03:41:29,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 03:41:29,700 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:29,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:29,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1724505494, now seen corresponding path program 1 times [2020-10-14 03:41:29,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:29,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132829775] [2020-10-14 03:41:29,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:29,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:30,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:30,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:32,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:34,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:34,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 967 [2020-10-14 03:41:34,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:41:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 03:41:34,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:34,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 676 [2020-10-14 03:41:34,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 03:41:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:34,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:34,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:34,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:34,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:34,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:34,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:41:34,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:34,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:34,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:35,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:35,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:35,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:41:35,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:35,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 03:41:35,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:35,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:35,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:35,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:41:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:35,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:35,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:35,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 03:41:35,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:35,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 03:41:35,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:35,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:35,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:35,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:35,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:35,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:35,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 03:41:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:35,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:35,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:35,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:41:35,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:35,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 03:41:35,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:35,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:35,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:35,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-14 03:41:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:35,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:35,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:41:35,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:35,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 03:41:35,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:35,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:35,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:41:35,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:35,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-14 03:41:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:35,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:35,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:35,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 03:41:35,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:35,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-14 03:41:35,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:35,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:35,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-14 03:41:35,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:41:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 763 proven. 2 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2020-10-14 03:41:37,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132829775] [2020-10-14 03:41:37,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:37,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:41:37,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146428491] [2020-10-14 03:41:37,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:41:37,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:37,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:41:37,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:41:37,161 INFO L87 Difference]: Start difference. First operand 28437 states and 30622 transitions. Second operand 7 states. [2020-10-14 03:41:42,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:42,145 INFO L93 Difference]: Finished difference Result 57566 states and 61971 transitions. [2020-10-14 03:41:42,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:41:42,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 949 [2020-10-14 03:41:42,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:42,195 INFO L225 Difference]: With dead ends: 57566 [2020-10-14 03:41:42,195 INFO L226 Difference]: Without dead ends: 29474 [2020-10-14 03:41:42,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:41:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29474 states. [2020-10-14 03:41:42,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29474 to 28784. [2020-10-14 03:41:42,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28784 states. [2020-10-14 03:41:42,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28784 states to 28784 states and 30963 transitions. [2020-10-14 03:41:42,500 INFO L78 Accepts]: Start accepts. Automaton has 28784 states and 30963 transitions. Word has length 949 [2020-10-14 03:41:42,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:42,500 INFO L479 AbstractCegarLoop]: Abstraction has 28784 states and 30963 transitions. [2020-10-14 03:41:42,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:41:42,500 INFO L276 IsEmpty]: Start isEmpty. Operand 28784 states and 30963 transitions. [2020-10-14 03:41:42,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2020-10-14 03:41:42,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:42,519 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:41:42,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 03:41:42,519 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:42,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:42,519 INFO L82 PathProgramCache]: Analyzing trace with hash 927623523, now seen corresponding path program 1 times [2020-10-14 03:41:42,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:42,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980022096] [2020-10-14 03:41:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:42,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:43,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:43,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:47,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:47,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 970 [2020-10-14 03:41:47,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:41:47,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5144 [2020-10-14 03:41:47,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:47,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:47,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:47,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 679 [2020-10-14 03:41:47,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 03:41:47,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:47,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:47,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:47,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:47,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:47,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:47,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:41:47,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:47,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:47,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:47,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:47,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:47,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:47,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:47,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:48,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:48,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:41:48,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:48,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 03:41:48,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:48,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:48,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:48,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:48,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:48,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:41:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:48,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:48,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 03:41:48,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:48,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 03:41:48,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:48,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:48,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:48,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:48,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:48,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:48,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-14 03:41:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:48,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:48,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:48,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:41:48,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:48,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 03:41:48,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:48,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:48,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:48,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:48,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:48,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:48,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-14 03:41:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:48,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:48,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:48,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:41:48,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:48,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 03:41:48,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:48,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:48,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:48,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:48,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:41:48,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:48,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2020-10-14 03:41:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:48,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:48,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:48,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 03:41:48,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 03:41:48,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:48,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-14 03:41:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:49,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 766 proven. 2 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2020-10-14 03:41:49,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980022096] [2020-10-14 03:41:49,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:49,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:41:49,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620120881] [2020-10-14 03:41:49,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:41:49,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:49,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:41:49,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:41:49,466 INFO L87 Difference]: Start difference. First operand 28784 states and 30963 transitions. Second operand 7 states. [2020-10-14 03:41:53,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:41:53,958 INFO L93 Difference]: Finished difference Result 58243 states and 62642 transitions. [2020-10-14 03:41:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 03:41:53,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 952 [2020-10-14 03:41:53,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:41:53,998 INFO L225 Difference]: With dead ends: 58243 [2020-10-14 03:41:53,998 INFO L226 Difference]: Without dead ends: 29804 [2020-10-14 03:41:54,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 03:41:54,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29804 states. [2020-10-14 03:41:54,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29804 to 29117. [2020-10-14 03:41:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29117 states. [2020-10-14 03:41:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29117 states to 29117 states and 31275 transitions. [2020-10-14 03:41:54,306 INFO L78 Accepts]: Start accepts. Automaton has 29117 states and 31275 transitions. Word has length 952 [2020-10-14 03:41:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:41:54,307 INFO L479 AbstractCegarLoop]: Abstraction has 29117 states and 31275 transitions. [2020-10-14 03:41:54,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:41:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 29117 states and 31275 transitions. [2020-10-14 03:41:54,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2020-10-14 03:41:54,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:41:54,321 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 03:41:54,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 03:41:54,321 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:41:54,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:41:54,321 INFO L82 PathProgramCache]: Analyzing trace with hash 278242039, now seen corresponding path program 1 times [2020-10-14 03:41:54,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:41:54,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182575831] [2020-10-14 03:41:54,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:41:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:54,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:54,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:56,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:56,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 968 [2020-10-14 03:41:56,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:41:56,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2100 [2020-10-14 03:41:56,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:56,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 663 [2020-10-14 03:41:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-14 03:41:56,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:56,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:41:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:56,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:56,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:56,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:41:56,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:56,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:41:56,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:56,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:56,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:56,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:41:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:56,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:56,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:56,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:41:56,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:56,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 03:41:56,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:56,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:56,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:56,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:56,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:56,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:56,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:41:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:56,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:56,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:56,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 03:41:56,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:56,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 03:41:56,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:56,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:41:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:56,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:41:56,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:56,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 03:41:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:56,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:57,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:57,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 03:41:57,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:57,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 03:41:57,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:57,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:57,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:41:57,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:41:57,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 03:41:57,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:57,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-14 03:41:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:41:57,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:41:57,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:41:57,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 03:41:57,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:41:57,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-14 03:41:57,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:41:57,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:41:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:41:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:41:57,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-14 03:41:57,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:41:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 730 proven. 2 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2020-10-14 03:41:58,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182575831] [2020-10-14 03:41:58,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:41:58,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:41:58,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56766861] [2020-10-14 03:41:58,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:41:58,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:41:58,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:41:58,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:41:58,048 INFO L87 Difference]: Start difference. First operand 29117 states and 31275 transitions. Second operand 8 states. [2020-10-14 03:42:03,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:42:03,488 INFO L93 Difference]: Finished difference Result 58928 states and 63338 transitions. [2020-10-14 03:42:03,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:42:03,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 952 [2020-10-14 03:42:03,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:42:03,533 INFO L225 Difference]: With dead ends: 58928 [2020-10-14 03:42:03,533 INFO L226 Difference]: Without dead ends: 30156 [2020-10-14 03:42:03,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-14 03:42:03,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30156 states. [2020-10-14 03:42:03,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30156 to 29472. [2020-10-14 03:42:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29472 states. [2020-10-14 03:42:03,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29472 states to 29472 states and 31533 transitions. [2020-10-14 03:42:03,829 INFO L78 Accepts]: Start accepts. Automaton has 29472 states and 31533 transitions. Word has length 952 [2020-10-14 03:42:03,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:42:03,830 INFO L479 AbstractCegarLoop]: Abstraction has 29472 states and 31533 transitions. [2020-10-14 03:42:03,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:42:03,831 INFO L276 IsEmpty]: Start isEmpty. Operand 29472 states and 31533 transitions. [2020-10-14 03:42:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1015 [2020-10-14 03:42:03,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:42:03,851 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-14 03:42:03,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 03:42:03,851 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:42:03,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:42:03,852 INFO L82 PathProgramCache]: Analyzing trace with hash 925045503, now seen corresponding path program 1 times [2020-10-14 03:42:03,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:42:03,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813071685] [2020-10-14 03:42:03,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:42:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:04,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:04,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:05,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:08,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:08,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1032 [2020-10-14 03:42:08,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:42:08,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 03:42:08,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:08,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:08,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:42:08,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 607 [2020-10-14 03:42:08,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 03:42:08,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:09,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:42:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:09,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:09,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:09,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:42:09,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:09,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:42:09,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:09,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:09,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:09,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:09,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:09,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:09,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:42:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:09,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:09,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:09,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:42:09,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 03:42:09,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:09,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:09,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:42:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:09,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:09,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:09,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 03:42:09,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:09,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 03:42:09,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:09,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:09,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:09,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:09,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:09,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:09,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-14 03:42:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:09,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:09,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:09,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:42:09,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:09,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 03:42:09,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:09,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:42:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:09,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:42:09,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:09,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-14 03:42:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:09,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:09,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:09,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 03:42:09,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:09,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 03:42:09,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:09,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:42:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:42:09,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 03:42:09,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:42:09,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-14 03:42:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:09,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:09,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:09,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 03:42:09,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 03:42:09,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:09,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-14 03:42:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1701 backedges. 506 proven. 131 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2020-10-14 03:42:10,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813071685] [2020-10-14 03:42:10,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:42:10,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:42:10,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387035121] [2020-10-14 03:42:10,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:42:10,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:42:10,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:42:10,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:42:10,102 INFO L87 Difference]: Start difference. First operand 29472 states and 31533 transitions. Second operand 7 states. [2020-10-14 03:42:14,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:42:14,910 INFO L93 Difference]: Finished difference Result 58925 states and 63065 transitions. [2020-10-14 03:42:14,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:42:14,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1014 [2020-10-14 03:42:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:42:14,953 INFO L225 Difference]: With dead ends: 58925 [2020-10-14 03:42:14,953 INFO L226 Difference]: Without dead ends: 29456 [2020-10-14 03:42:14,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:42:14,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29456 states. [2020-10-14 03:42:15,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29456 to 27759. [2020-10-14 03:42:15,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27759 states. [2020-10-14 03:42:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27759 states to 27759 states and 29455 transitions. [2020-10-14 03:42:15,225 INFO L78 Accepts]: Start accepts. Automaton has 27759 states and 29455 transitions. Word has length 1014 [2020-10-14 03:42:15,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:42:15,226 INFO L479 AbstractCegarLoop]: Abstraction has 27759 states and 29455 transitions. [2020-10-14 03:42:15,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:42:15,226 INFO L276 IsEmpty]: Start isEmpty. Operand 27759 states and 29455 transitions. [2020-10-14 03:42:15,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1015 [2020-10-14 03:42:15,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:42:15,238 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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] [2020-10-14 03:42:15,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 03:42:15,238 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:42:15,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:42:15,238 INFO L82 PathProgramCache]: Analyzing trace with hash -515967213, now seen corresponding path program 1 times [2020-10-14 03:42:15,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:42:15,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654241448] [2020-10-14 03:42:15,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:42:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:15,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:17,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:17,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-14 03:42:17,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:42:17,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2122 [2020-10-14 03:42:17,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:17,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:17,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:42:17,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-14 03:42:17,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-14 03:42:17,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:17,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:42:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:17,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:17,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:17,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:42:17,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:17,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:42:17,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:17,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:17,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:17,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:17,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:42:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:17,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:17,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:17,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 03:42:17,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:17,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 03:42:17,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:17,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:17,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:17,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 03:42:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:17,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:17,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:17,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 03:42:17,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:17,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 03:42:17,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:17,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:42:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:42:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-14 03:42:17,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:17,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 03:42:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:18,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:18,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 03:42:18,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:18,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-14 03:42:18,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:18,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:18,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:42:18,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:42:18,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 03:42:18,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:18,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2020-10-14 03:42:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:42:18,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:42:18,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:42:18,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 03:42:18,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:42:18,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 03:42:18,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:42:18,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:42:18,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:42:18,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-14 03:42:18,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:42:18,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:42:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 549 proven. 248 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2020-10-14 03:42:18,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654241448] [2020-10-14 03:42:18,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:42:18,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:42:18,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034019925] [2020-10-14 03:42:18,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:42:18,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:42:18,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:42:18,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:42:18,981 INFO L87 Difference]: Start difference. First operand 27759 states and 29455 transitions. Second operand 7 states.