/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/Problem06_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:28:46,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:28:46,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:28:46,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:28:46,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:28:46,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:28:46,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:28:46,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:28:46,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:28:46,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:28:46,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:28:46,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:28:46,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:28:46,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:28:46,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:28:46,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:28:46,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:28:46,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:28:46,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:28:46,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:28:46,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:28:46,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:28:46,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:28:46,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:28:46,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:28:46,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:28:46,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:28:46,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:28:46,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:28:46,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:28:46,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:28:46,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:28:46,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:28:46,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:28:46,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:28:46,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:28:46,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:28:46,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:28:46,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:28:46,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:28:46,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:28:46,324 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 01:28:46,365 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:28:46,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:28:46,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:28:46,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:28:46,368 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:28:46,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:28:46,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:28:46,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:28:46,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:28:46,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:28:46,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:28:46,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:28:46,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:28:46,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:28:46,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:28:46,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:28:46,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:28:46,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:28:46,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:28:46,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:28:46,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:28:46,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:28:46,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:28:46,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:28:46,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:28:46,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:28:46,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:28:46,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:28:46,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:28:46,374 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 01:28:46,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:28:46,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:28:46,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:28:46,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:28:46,705 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:28:46,705 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label03.c [2020-10-14 01:28:46,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4efdabbab/d701de576bfb49b7a4b8643e825bf919/FLAG7a7cc3223 [2020-10-14 01:28:47,765 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:28:47,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label03.c [2020-10-14 01:28:47,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4efdabbab/d701de576bfb49b7a4b8643e825bf919/FLAG7a7cc3223 [2020-10-14 01:28:48,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4efdabbab/d701de576bfb49b7a4b8643e825bf919 [2020-10-14 01:28:48,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:28:48,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:28:48,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:28:48,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:28:48,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:28:48,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:28:48" (1/1) ... [2020-10-14 01:28:48,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c489c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:48, skipping insertion in model container [2020-10-14 01:28:48,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:28:48" (1/1) ... [2020-10-14 01:28:48,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:28:48,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:28:50,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:28:50,816 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:28:51,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:28:51,955 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:28:51,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:51 WrapperNode [2020-10-14 01:28:51,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:28:51,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:28:51,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:28:51,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:28:51,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:51" (1/1) ... [2020-10-14 01:28:51,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:51" (1/1) ... [2020-10-14 01:28:52,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:51" (1/1) ... [2020-10-14 01:28:52,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:51" (1/1) ... [2020-10-14 01:28:52,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:51" (1/1) ... [2020-10-14 01:28:52,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:51" (1/1) ... [2020-10-14 01:28:52,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:51" (1/1) ... [2020-10-14 01:28:52,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:28:52,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:28:52,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:28:52,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:28:52,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:51" (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 01:28:52,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:28:52,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:28:52,452 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:28:52,452 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:28:52,452 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:28:52,452 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:28:52,453 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:28:52,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:28:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:28:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:28:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:28:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:28:52,454 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:28:52,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:28:52,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:28:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:28:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:28:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:28:52,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:28:59,513 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:28:59,515 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:28:59,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:28:59 BoogieIcfgContainer [2020-10-14 01:28:59,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:28:59,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:28:59,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:28:59,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:28:59,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:28:48" (1/3) ... [2020-10-14 01:28:59,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4944aca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:28:59, skipping insertion in model container [2020-10-14 01:28:59,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:51" (2/3) ... [2020-10-14 01:28:59,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4944aca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:28:59, skipping insertion in model container [2020-10-14 01:28:59,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:28:59" (3/3) ... [2020-10-14 01:28:59,537 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label03.c [2020-10-14 01:28:59,548 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:28:59,558 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:28:59,573 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:28:59,602 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:28:59,603 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:28:59,603 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:28:59,603 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:28:59,603 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:28:59,603 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:28:59,603 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:28:59,603 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:28:59,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 01:28:59,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2020-10-14 01:28:59,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:28:59,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:28:59,720 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:28:59,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:28:59,728 INFO L82 PathProgramCache]: Analyzing trace with hash -2092316825, now seen corresponding path program 1 times [2020-10-14 01:28:59,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:28:59,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129117243] [2020-10-14 01:28:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:29:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:01,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:04,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:05,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:05,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 996 [2020-10-14 01:29:05,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:29:05,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-14 01:29:05,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:05,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:05,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 01:29:05,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:29:05,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 990 [2020-10-14 01:29:05,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 01:29:07,448 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:29:07,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:29:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:07,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:07,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:07,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:29:07,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:29:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 01:29:07,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:07,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:29:07,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:29:07,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:29:07,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 01:29:09,340 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 01:29:09,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129117243] [2020-10-14 01:29:09,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:29:09,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 01:29:09,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203712144] [2020-10-14 01:29:09,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:29:09,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:29:09,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:29:09,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:29:09,363 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 5 states. [2020-10-14 01:29:09,580 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:29:09,804 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:29:29,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:29:29,694 INFO L93 Difference]: Finished difference Result 4863 states and 9180 transitions. [2020-10-14 01:29:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 01:29:29,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 980 [2020-10-14 01:29:29,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:29:29,750 INFO L225 Difference]: With dead ends: 4863 [2020-10-14 01:29:29,751 INFO L226 Difference]: Without dead ends: 3480 [2020-10-14 01:29:29,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:29:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2020-10-14 01:29:29,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3397. [2020-10-14 01:29:29,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3397 states. [2020-10-14 01:29:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 5926 transitions. [2020-10-14 01:29:29,991 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 5926 transitions. Word has length 980 [2020-10-14 01:29:29,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:29:29,996 INFO L479 AbstractCegarLoop]: Abstraction has 3397 states and 5926 transitions. [2020-10-14 01:29:29,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:29:29,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 5926 transitions. [2020-10-14 01:29:30,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2020-10-14 01:29:30,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:29:30,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:30,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:29:30,112 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:29:30,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:29:30,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1900579808, now seen corresponding path program 1 times [2020-10-14 01:29:30,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:29:30,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782135733] [2020-10-14 01:29:30,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:29:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:30,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:33,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:35,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:35,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1007 [2020-10-14 01:29:35,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:29:35,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 01:29:35,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:35,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:29:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:29:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:29:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:29:35,931 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:29:35,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:29:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:35,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:35,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:35,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:29:35,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:29:35,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 01:29:35,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:35,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:35,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:29:35,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:29:35,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:29:35,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 01:29:36,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:29:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:36,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:36,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:36,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:29:36,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:29:36,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 01:29:36,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:36,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:36,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:29:36,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:29:36,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:29:36,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:29:36,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:29:36,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782135733] [2020-10-14 01:29:36,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:29:36,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:29:36,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341898201] [2020-10-14 01:29:36,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:29:36,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:29:36,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:29:36,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:29:36,671 INFO L87 Difference]: Start difference. First operand 3397 states and 5926 transitions. Second operand 7 states. [2020-10-14 01:29:36,814 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:29:37,646 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:29:53,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:29:53,477 INFO L93 Difference]: Finished difference Result 10095 states and 17936 transitions. [2020-10-14 01:29:53,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:29:53,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 989 [2020-10-14 01:29:53,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:29:53,531 INFO L225 Difference]: With dead ends: 10095 [2020-10-14 01:29:53,531 INFO L226 Difference]: Without dead ends: 6704 [2020-10-14 01:29:53,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:29:53,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6704 states. [2020-10-14 01:29:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6704 to 6581. [2020-10-14 01:29:53,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6581 states. [2020-10-14 01:29:53,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6581 states to 6581 states and 10961 transitions. [2020-10-14 01:29:53,789 INFO L78 Accepts]: Start accepts. Automaton has 6581 states and 10961 transitions. Word has length 989 [2020-10-14 01:29:53,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:29:53,789 INFO L479 AbstractCegarLoop]: Abstraction has 6581 states and 10961 transitions. [2020-10-14 01:29:53,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:29:53,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6581 states and 10961 transitions. [2020-10-14 01:29:53,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-14 01:29:53,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:29:53,823 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:29:53,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:29:53,824 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:29:53,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:29:53,825 INFO L82 PathProgramCache]: Analyzing trace with hash 162806148, now seen corresponding path program 1 times [2020-10-14 01:29:53,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:29:53,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108183073] [2020-10-14 01:29:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:29:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:53,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:54,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:58,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:59,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:59,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1014 [2020-10-14 01:29:59,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:29:59,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5285 [2020-10-14 01:29:59,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:59,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:29:59,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:29:59,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:29:59,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:29:59,759 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:29:59,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:29:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:59,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:59,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:29:59,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:29:59,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 01:29:59,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:59,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:59,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:29:59,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:29:59,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:29:59,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:29:59,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:29:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:59,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:59,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:59,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:29:59,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:29:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 01:29:59,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:59,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:29:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:29:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:29:59,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:30:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:30:00,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108183073] [2020-10-14 01:30:00,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:30:00,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:30:00,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148806396] [2020-10-14 01:30:00,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:30:00,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:30:00,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:30:00,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:30:00,745 INFO L87 Difference]: Start difference. First operand 6581 states and 10961 transitions. Second operand 8 states. [2020-10-14 01:30:00,901 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 01:30:01,277 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:30:27,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:30:27,002 INFO L93 Difference]: Finished difference Result 26535 states and 46168 transitions. [2020-10-14 01:30:27,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:30:27,007 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 996 [2020-10-14 01:30:27,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:30:27,102 INFO L225 Difference]: With dead ends: 26535 [2020-10-14 01:30:27,103 INFO L226 Difference]: Without dead ends: 19960 [2020-10-14 01:30:27,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:30:27,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19960 states. [2020-10-14 01:30:27,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19960 to 19855. [2020-10-14 01:30:27,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19855 states. [2020-10-14 01:30:27,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19855 states to 19855 states and 34299 transitions. [2020-10-14 01:30:27,759 INFO L78 Accepts]: Start accepts. Automaton has 19855 states and 34299 transitions. Word has length 996 [2020-10-14 01:30:27,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:30:27,759 INFO L479 AbstractCegarLoop]: Abstraction has 19855 states and 34299 transitions. [2020-10-14 01:30:27,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:30:27,760 INFO L276 IsEmpty]: Start isEmpty. Operand 19855 states and 34299 transitions. [2020-10-14 01:30:27,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-14 01:30:27,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:30:27,848 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:27,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:30:27,848 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:30:27,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:30:27,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1017944574, now seen corresponding path program 1 times [2020-10-14 01:30:27,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:30:27,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953884522] [2020-10-14 01:30:27,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:30:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:27,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:30,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:33,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:33,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1014 [2020-10-14 01:30:33,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:30:33,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5173 [2020-10-14 01:30:33,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:33,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:33,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:30:33,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:30:33,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 01:30:33,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:30:33,778 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:30:33,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:30:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:33,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:33,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:33,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:30:33,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:30:33,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:30:33,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:33,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:33,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:30:33,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:30:33,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:30:33,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:30:33,932 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-14 01:30:33,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:30:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:33,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:34,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:34,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:30:34,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:30:34,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 01:30:34,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:34,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:34,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:30:34,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:30:34,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:30:34,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:30:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:30:35,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953884522] [2020-10-14 01:30:35,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:30:35,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:30:35,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619501804] [2020-10-14 01:30:35,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:30:35,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:30:35,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:30:35,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:30:35,009 INFO L87 Difference]: Start difference. First operand 19855 states and 34299 transitions. Second operand 7 states. [2020-10-14 01:30:35,155 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:30:35,482 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:30:51,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:30:51,221 INFO L93 Difference]: Finished difference Result 47115 states and 83326 transitions. [2020-10-14 01:30:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:30:51,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 996 [2020-10-14 01:30:51,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:30:51,373 INFO L225 Difference]: With dead ends: 47115 [2020-10-14 01:30:51,374 INFO L226 Difference]: Without dead ends: 27266 [2020-10-14 01:30:51,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:30:51,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27266 states. [2020-10-14 01:30:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27266 to 26970. [2020-10-14 01:30:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26970 states. [2020-10-14 01:30:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26970 states to 26970 states and 45896 transitions. [2020-10-14 01:30:52,573 INFO L78 Accepts]: Start accepts. Automaton has 26970 states and 45896 transitions. Word has length 996 [2020-10-14 01:30:52,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:30:52,574 INFO L479 AbstractCegarLoop]: Abstraction has 26970 states and 45896 transitions. [2020-10-14 01:30:52,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:30:52,574 INFO L276 IsEmpty]: Start isEmpty. Operand 26970 states and 45896 transitions. [2020-10-14 01:30:52,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2020-10-14 01:30:52,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:30:52,667 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:52,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:30:52,671 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:30:52,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:30:52,672 INFO L82 PathProgramCache]: Analyzing trace with hash 983149853, now seen corresponding path program 1 times [2020-10-14 01:30:52,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:30:52,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889586410] [2020-10-14 01:30:52,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:30:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:53,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:58,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:58,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1021 [2020-10-14 01:30:58,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:30:58,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5190 [2020-10-14 01:30:58,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:58,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:30:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 01:30:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 01:30:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:30:58,334 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:30:58,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:30:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:58,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:58,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:58,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:30:58,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:30:58,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:30:58,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:58,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:30:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:30:58,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:30:58,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:30:58,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:30:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:58,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:58,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:58,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:30:58,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:30:58,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 01:30:58,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:58,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:58,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:30:58,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:30:58,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 01:30:58,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:30:58,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 01:30:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:58,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:58,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 01:30:58,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:30:58,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 01:30:58,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:58,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:30:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:30:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:30:58,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:30:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:30:59,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889586410] [2020-10-14 01:30:59,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:30:59,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:30:59,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706596856] [2020-10-14 01:30:59,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:30:59,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:30:59,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:30:59,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:30:59,319 INFO L87 Difference]: Start difference. First operand 26970 states and 45896 transitions. Second operand 7 states. [2020-10-14 01:30:59,471 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:31:00,404 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 01:31:19,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:31:19,775 INFO L93 Difference]: Finished difference Result 81895 states and 150831 transitions. [2020-10-14 01:31:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:31:19,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1001 [2020-10-14 01:31:19,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:31:20,038 INFO L225 Difference]: With dead ends: 81895 [2020-10-14 01:31:20,038 INFO L226 Difference]: Without dead ends: 54931 [2020-10-14 01:31:20,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:31:20,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54931 states. [2020-10-14 01:31:21,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54931 to 54328. [2020-10-14 01:31:21,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54328 states. [2020-10-14 01:31:21,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54328 states to 54328 states and 89922 transitions. [2020-10-14 01:31:21,619 INFO L78 Accepts]: Start accepts. Automaton has 54328 states and 89922 transitions. Word has length 1001 [2020-10-14 01:31:21,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:31:21,620 INFO L479 AbstractCegarLoop]: Abstraction has 54328 states and 89922 transitions. [2020-10-14 01:31:21,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:31:21,620 INFO L276 IsEmpty]: Start isEmpty. Operand 54328 states and 89922 transitions. [2020-10-14 01:31:21,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2020-10-14 01:31:21,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:31:21,782 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:21,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:31:21,783 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:31:21,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:31:21,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1098732692, now seen corresponding path program 1 times [2020-10-14 01:31:21,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:31:21,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917129680] [2020-10-14 01:31:21,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:31:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:22,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:22,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:27,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:27,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1029 [2020-10-14 01:31:27,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:31:27,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 01:31:27,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:27,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:31:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:31:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 01:31:27,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:27,482 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:31:27,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:31:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:27,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:27,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:27,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:31:27,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:27,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:31:27,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:27,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:27,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:31:27,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:31:27,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:31:27,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:27,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:31:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:27,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:27,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:27,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 01:31:27,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:27,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 01:31:27,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:27,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:27,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:31:27,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:31:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 01:31:27,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:28,498 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:31:28,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917129680] [2020-10-14 01:31:28,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:31:28,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:31:28,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396833756] [2020-10-14 01:31:28,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:31:28,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:31:28,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:31:28,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:31:28,502 INFO L87 Difference]: Start difference. First operand 54328 states and 89922 transitions. Second operand 7 states. [2020-10-14 01:31:28,671 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 01:31:29,575 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 01:31:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:31:49,154 INFO L93 Difference]: Finished difference Result 136684 states and 226467 transitions. [2020-10-14 01:31:49,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:31:49,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1011 [2020-10-14 01:31:49,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:31:49,483 INFO L225 Difference]: With dead ends: 136684 [2020-10-14 01:31:49,484 INFO L226 Difference]: Without dead ends: 82362 [2020-10-14 01:31:50,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:31:50,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82362 states. [2020-10-14 01:31:52,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82362 to 81353. [2020-10-14 01:31:52,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81353 states. [2020-10-14 01:31:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81353 states to 81353 states and 131154 transitions. [2020-10-14 01:31:52,315 INFO L78 Accepts]: Start accepts. Automaton has 81353 states and 131154 transitions. Word has length 1011 [2020-10-14 01:31:52,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:31:52,316 INFO L479 AbstractCegarLoop]: Abstraction has 81353 states and 131154 transitions. [2020-10-14 01:31:52,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:31:52,317 INFO L276 IsEmpty]: Start isEmpty. Operand 81353 states and 131154 transitions. [2020-10-14 01:31:52,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1016 [2020-10-14 01:31:52,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:31:52,622 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:52,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:31:52,623 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:31:52,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:31:52,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2070079751, now seen corresponding path program 1 times [2020-10-14 01:31:52,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:31:52,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934175272] [2020-10-14 01:31:52,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:31:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:53,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:56,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:57,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:57,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1035 [2020-10-14 01:31:57,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:31:57,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-14 01:31:57,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:57,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 01:31:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:31:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 01:31:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:58,138 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:31:58,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:31:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:58,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:58,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:58,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:31:58,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:58,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:31:58,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:58,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:31:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:31:58,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:31:58,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:58,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:31:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:58,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:58,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:58,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:31:58,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:31:58,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 01:31:58,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:58,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:58,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:31:58,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:31:58,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 01:31:58,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:58,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 01:31:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:58,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:58,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:58,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:31:58,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 01:31:58,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:58,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:31:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:31:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:31:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 01:31:59,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934175272] [2020-10-14 01:31:59,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:31:59,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 01:31:59,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754550936] [2020-10-14 01:31:59,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:31:59,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:31:59,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:31:59,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:31:59,129 INFO L87 Difference]: Start difference. First operand 81353 states and 131154 transitions. Second operand 7 states. [2020-10-14 01:31:59,270 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:31:59,639 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:32:15,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:32:15,581 INFO L93 Difference]: Finished difference Result 203825 states and 337727 transitions. [2020-10-14 01:32:15,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:32:15,582 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1015 [2020-10-14 01:32:15,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:32:15,924 INFO L225 Difference]: With dead ends: 203825 [2020-10-14 01:32:15,924 INFO L226 Difference]: Without dead ends: 122478 [2020-10-14 01:32:16,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:32:16,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122478 states.