/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=BIGGEST --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/Problem03_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:16:29,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:16:29,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:16:29,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:16:29,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:16:29,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:16:29,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:16:29,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:16:29,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:16:29,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:16:29,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:16:29,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:16:29,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:16:29,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:16:29,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:16:29,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:16:29,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:16:29,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:16:29,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:16:29,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:16:29,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:16:29,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:16:29,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:16:29,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:16:29,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:16:29,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:16:29,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:16:29,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:16:29,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:16:29,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:16:29,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:16:29,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:16:29,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:16:29,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:16:29,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:16:29,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:16:29,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:16:29,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:16:29,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:16:29,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:16:29,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:16:29,371 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 [2020-10-12 11:16:29,409 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:16:29,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:16:29,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:16:29,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:16:29,412 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:16:29,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:16:29,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:16:29,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:16:29,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:16:29,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:16:29,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:16:29,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:16:29,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:16:29,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:16:29,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:16:29,415 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:16:29,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:16:29,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:16:29,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:16:29,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:16:29,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:16:29,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:16:29,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:16:29,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:16:29,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:16:29,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:16:29,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:16:29,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:16:29,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:16:29,417 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:16:29,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:16:29,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:16:29,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:16:29,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:16:29,744 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:16:29,744 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label09.c [2020-10-12 11:16:29,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dc74faea/6ce26f00a143462fb60502a2cfb506ee/FLAG86fccf180 [2020-10-12 11:16:30,462 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:16:30,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label09.c [2020-10-12 11:16:30,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dc74faea/6ce26f00a143462fb60502a2cfb506ee/FLAG86fccf180 [2020-10-12 11:16:30,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dc74faea/6ce26f00a143462fb60502a2cfb506ee [2020-10-12 11:16:30,635 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:16:30,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:16:30,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:16:30,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:16:30,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:16:30,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:16:30" (1/1) ... [2020-10-12 11:16:30,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb66ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:30, skipping insertion in model container [2020-10-12 11:16:30,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:16:30" (1/1) ... [2020-10-12 11:16:30,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:16:30,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:16:31,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:16:31,811 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:16:32,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:16:32,128 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:16:32,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:32 WrapperNode [2020-10-12 11:16:32,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:16:32,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:16:32,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:16:32,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:16:32,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:32" (1/1) ... [2020-10-12 11:16:32,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:32" (1/1) ... [2020-10-12 11:16:32,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:32" (1/1) ... [2020-10-12 11:16:32,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:32" (1/1) ... [2020-10-12 11:16:32,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:32" (1/1) ... [2020-10-12 11:16:32,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:32" (1/1) ... [2020-10-12 11:16:32,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:32" (1/1) ... [2020-10-12 11:16:32,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:16:32,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:16:32,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:16:32,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:16:32,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:32" (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 [2020-10-12 11:16:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:16:32,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:16:32,376 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:16:32,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:16:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:16:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:16:32,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:16:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:16:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:16:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:16:32,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:16:34,531 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:16:34,531 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:16:34,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:16:34 BoogieIcfgContainer [2020-10-12 11:16:34,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:16:34,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:16:34,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:16:34,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:16:34,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:16:30" (1/3) ... [2020-10-12 11:16:34,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b93fae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:16:34, skipping insertion in model container [2020-10-12 11:16:34,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:32" (2/3) ... [2020-10-12 11:16:34,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b93fae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:16:34, skipping insertion in model container [2020-10-12 11:16:34,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:16:34" (3/3) ... [2020-10-12 11:16:34,547 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label09.c [2020-10-12 11:16:34,558 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:16:34,566 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:16:34,580 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:16:34,607 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:16:34,607 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:16:34,608 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:16:34,608 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:16:34,608 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:16:34,608 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:16:34,608 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:16:34,608 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:16:34,634 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:16:34,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-12 11:16:34,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:16:34,651 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] [2020-10-12 11:16:34,651 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:16:34,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:16:34,658 INFO L82 PathProgramCache]: Analyzing trace with hash -520892331, now seen corresponding path program 1 times [2020-10-12 11:16:34,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:16:34,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968336953] [2020-10-12 11:16:34,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:16:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:35,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:36,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:39,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:39,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-12 11:16:39,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:16:39,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4288 [2020-10-12 11:16:39,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:39,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:16:39,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:16:39,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:16:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 11:16:40,952 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-12 11:16:41,196 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-12 11:16:41,490 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 90 [2020-10-12 11:16:41,846 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 90 [2020-10-12 11:16:42,403 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 98 [2020-10-12 11:16:42,916 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 92 [2020-10-12 11:16:43,448 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 85 [2020-10-12 11:16:43,905 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 77 [2020-10-12 11:16:44,295 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 60 [2020-10-12 11:16:44,465 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:16:44,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:16:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:44,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:44,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:16:44,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:16:44,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 11:16:44,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:16:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:16:44,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:16:44,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:16:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:16:45,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968336953] [2020-10-12 11:16:45,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:16:45,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 11:16:45,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457080446] [2020-10-12 11:16:45,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 11:16:45,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:16:45,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 11:16:45,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:16:45,317 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 13 states. [2020-10-12 11:16:45,767 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 11:16:46,653 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 188 [2020-10-12 11:16:47,551 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 188 [2020-10-12 11:16:48,568 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 208 [2020-10-12 11:16:50,078 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 240 DAG size of output: 203 [2020-10-12 11:16:51,805 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 241 DAG size of output: 200 [2020-10-12 11:16:53,615 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 242 DAG size of output: 196 [2020-10-12 11:16:57,471 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 244 DAG size of output: 193 [2020-10-12 11:16:59,166 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 244 DAG size of output: 189 [2020-10-12 11:17:02,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:02,321 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:17:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:17:02,325 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-10-12 11:17:02,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:02,342 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:17:02,342 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:17:02,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-10-12 11:17:02,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:17:02,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:17:02,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:17:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-12 11:17:02,430 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 154 [2020-10-12 11:17:02,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:02,431 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-12 11:17:02,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 11:17:02,431 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-12 11:17:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-12 11:17:02,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:02,437 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 11:17:02,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:17:02,437 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:02,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:02,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1992161102, now seen corresponding path program 1 times [2020-10-12 11:17:02,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:02,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974938098] [2020-10-12 11:17:02,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:02,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:02,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:04,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:07,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:07,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-12 11:17:07,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:17:07,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4907 [2020-10-12 11:17:07,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:07,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:17:07,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:07,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:17:07,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:08,506 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2020-10-12 11:17:08,715 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2020-10-12 11:17:09,074 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 87 [2020-10-12 11:17:09,439 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 88 [2020-10-12 11:17:09,798 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 78 [2020-10-12 11:17:10,113 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 68 [2020-10-12 11:17:10,396 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 57 [2020-10-12 11:17:10,562 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:10,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:10,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:10,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:10,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:10,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:17:10,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:10,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:10,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:10,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:10,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:10,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:17:10,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:10,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 11:17:10,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:10,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:17:10,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:17:10,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:17:11,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974938098] [2020-10-12 11:17:11,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:11,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:17:11,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66389238] [2020-10-12 11:17:11,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:17:11,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:11,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:17:11,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:17:11,521 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-12 11:17:11,820 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-12 11:17:12,416 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 93 [2020-10-12 11:17:12,752 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-12 11:17:13,127 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2020-10-12 11:17:13,871 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 167 [2020-10-12 11:17:14,679 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 175 [2020-10-12 11:17:15,984 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 217 DAG size of output: 174 [2020-10-12 11:17:18,195 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 220 DAG size of output: 173 [2020-10-12 11:17:21,010 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 221 DAG size of output: 172 [2020-10-12 11:17:24,319 WARN L193 SmtUtils]: Spent 888.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 171 [2020-10-12 11:17:25,376 WARN L193 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 169 [2020-10-12 11:17:27,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:27,704 INFO L93 Difference]: Finished difference Result 756 states and 1212 transitions. [2020-10-12 11:17:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:17:27,708 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 165 [2020-10-12 11:17:27,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:27,713 INFO L225 Difference]: With dead ends: 756 [2020-10-12 11:17:27,713 INFO L226 Difference]: Without dead ends: 513 [2020-10-12 11:17:27,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:17:27,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-12 11:17:27,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 509. [2020-10-12 11:17:27,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-12 11:17:27,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 677 transitions. [2020-10-12 11:17:27,757 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 677 transitions. Word has length 165 [2020-10-12 11:17:27,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:27,758 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 677 transitions. [2020-10-12 11:17:27,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:17:27,758 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 677 transitions. [2020-10-12 11:17:27,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-12 11:17:27,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:27,762 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 11:17:27,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:17:27,763 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:27,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:27,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1588328602, now seen corresponding path program 1 times [2020-10-12 11:17:27,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:27,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884369848] [2020-10-12 11:17:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:27,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:28,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:29,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:29,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-12 11:17:29,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:29,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1490 [2020-10-12 11:17:29,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:17:29,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:29,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-12 11:17:29,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:29,568 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:29,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:29,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:29,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:29,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:29,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:29,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:17:29,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:29,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:29,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:29,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:29,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:29,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:29,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:29,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:29,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:29,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 11:17:29,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:29,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:29,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:17:29,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884369848] [2020-10-12 11:17:29,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:29,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:17:29,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415910326] [2020-10-12 11:17:29,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:17:29,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:29,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:17:29,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:17:29,966 INFO L87 Difference]: Start difference. First operand 509 states and 677 transitions. Second operand 6 states. [2020-10-12 11:17:30,213 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:33,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:33,120 INFO L93 Difference]: Finished difference Result 988 states and 1470 transitions. [2020-10-12 11:17:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:17:33,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2020-10-12 11:17:33,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:33,126 INFO L225 Difference]: With dead ends: 988 [2020-10-12 11:17:33,126 INFO L226 Difference]: Without dead ends: 745 [2020-10-12 11:17:33,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:17:33,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2020-10-12 11:17:33,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 731. [2020-10-12 11:17:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-10-12 11:17:33,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1027 transitions. [2020-10-12 11:17:33,167 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1027 transitions. Word has length 175 [2020-10-12 11:17:33,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:33,168 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 1027 transitions. [2020-10-12 11:17:33,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:17:33,168 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1027 transitions. [2020-10-12 11:17:33,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-12 11:17:33,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:33,174 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-12 11:17:33,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:17:33,174 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:33,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:33,175 INFO L82 PathProgramCache]: Analyzing trace with hash 261896909, now seen corresponding path program 1 times [2020-10-12 11:17:33,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:33,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240890229] [2020-10-12 11:17:33,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:33,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:33,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:34,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:35,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:37,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:37,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-12 11:17:37,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:17:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4084 [2020-10-12 11:17:37,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:17:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:17:37,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:37,572 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:37,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:37,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:37,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:37,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:37,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:37,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:17:37,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:37,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:37,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:37,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:17:37,733 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:17:37,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:37,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:37,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:37,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:37,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-12 11:17:37,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:37,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:37,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:37,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:37,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:37,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:17:37,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:37,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 11:17:37,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:37,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:37,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:37,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:17:37,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:17:38,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240890229] [2020-10-12 11:17:38,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:38,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:17:38,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913937342] [2020-10-12 11:17:38,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:17:38,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:38,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:17:38,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:17:38,046 INFO L87 Difference]: Start difference. First operand 731 states and 1027 transitions. Second operand 8 states. [2020-10-12 11:17:38,197 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:41,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:41,274 INFO L93 Difference]: Finished difference Result 1660 states and 2530 transitions. [2020-10-12 11:17:41,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:17:41,280 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2020-10-12 11:17:41,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:41,287 INFO L225 Difference]: With dead ends: 1660 [2020-10-12 11:17:41,288 INFO L226 Difference]: Without dead ends: 1195 [2020-10-12 11:17:41,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:17:41,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-10-12 11:17:41,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1185. [2020-10-12 11:17:41,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2020-10-12 11:17:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1762 transitions. [2020-10-12 11:17:41,333 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1762 transitions. Word has length 184 [2020-10-12 11:17:41,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:41,334 INFO L479 AbstractCegarLoop]: Abstraction has 1185 states and 1762 transitions. [2020-10-12 11:17:41,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:17:41,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1762 transitions. [2020-10-12 11:17:41,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-12 11:17:41,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:41,340 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:17:41,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:17:41,340 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:41,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:41,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1967234583, now seen corresponding path program 1 times [2020-10-12 11:17:41,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:41,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848056472] [2020-10-12 11:17:41,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:41,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:41,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:42,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:43,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:43,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-12 11:17:43,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:17:43,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2328 [2020-10-12 11:17:43,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:17:43,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:17:43,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-12 11:17:43,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:43,934 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:43,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:43,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:43,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:43,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:43,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:43,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:17:43,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:17:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:43,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:17:43,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:44,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:44,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:44,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:44,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:44,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:44,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 11:17:44,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:17:44,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:44,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:44,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:44,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:44,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:44,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:17:44,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:44,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 11:17:44,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:44,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:17:44,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:44,325 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:17:44,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848056472] [2020-10-12 11:17:44,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:44,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:17:44,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415761012] [2020-10-12 11:17:44,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:17:44,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:44,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:17:44,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:17:44,329 INFO L87 Difference]: Start difference. First operand 1185 states and 1762 transitions. Second operand 6 states. [2020-10-12 11:17:44,719 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:47,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:47,679 INFO L93 Difference]: Finished difference Result 3014 states and 4865 transitions. [2020-10-12 11:17:47,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:17:47,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2020-10-12 11:17:47,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:47,695 INFO L225 Difference]: With dead ends: 3014 [2020-10-12 11:17:47,695 INFO L226 Difference]: Without dead ends: 2095 [2020-10-12 11:17:47,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:17:47,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2020-10-12 11:17:47,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 2071. [2020-10-12 11:17:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2071 states. [2020-10-12 11:17:47,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 3063 transitions. [2020-10-12 11:17:47,792 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 3063 transitions. Word has length 186 [2020-10-12 11:17:47,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:47,792 INFO L479 AbstractCegarLoop]: Abstraction has 2071 states and 3063 transitions. [2020-10-12 11:17:47,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:17:47,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 3063 transitions. [2020-10-12 11:17:47,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-12 11:17:47,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:47,801 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:17:47,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:17:47,802 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:47,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:47,802 INFO L82 PathProgramCache]: Analyzing trace with hash 667289405, now seen corresponding path program 1 times [2020-10-12 11:17:47,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:47,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846992532] [2020-10-12 11:17:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:47,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:49,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:51,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:51,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-12 11:17:51,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:17:51,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3639 [2020-10-12 11:17:51,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:51,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:17:51,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:51,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:17:51,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:51,689 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:51,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:51,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:51,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:51,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:51,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:17:51,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:51,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:51,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:51,844 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:17:51,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:51,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:51,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:51,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:51,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:51,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:51,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-12 11:17:51,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:51,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:51,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:51,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:51,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:52,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:52,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:52,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:52,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:17:52,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:52,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 11:17:52,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:17:52,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:17:52,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846992532] [2020-10-12 11:17:52,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:52,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:17:52,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681279073] [2020-10-12 11:17:52,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:17:52,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:52,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:17:52,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:17:52,223 INFO L87 Difference]: Start difference. First operand 2071 states and 3063 transitions. Second operand 8 states. [2020-10-12 11:17:52,455 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:54,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:54,337 INFO L93 Difference]: Finished difference Result 3823 states and 5826 transitions. [2020-10-12 11:17:54,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:17:54,345 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 192 [2020-10-12 11:17:54,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:54,357 INFO L225 Difference]: With dead ends: 3823 [2020-10-12 11:17:54,358 INFO L226 Difference]: Without dead ends: 2018 [2020-10-12 11:17:54,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:17:54,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2020-10-12 11:17:54,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 2018. [2020-10-12 11:17:54,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2018 states. [2020-10-12 11:17:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 2854 transitions. [2020-10-12 11:17:54,490 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 2854 transitions. Word has length 192 [2020-10-12 11:17:54,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:54,493 INFO L479 AbstractCegarLoop]: Abstraction has 2018 states and 2854 transitions. [2020-10-12 11:17:54,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:17:54,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 2854 transitions. [2020-10-12 11:17:54,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-12 11:17:54,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:54,499 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:17:54,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:17:54,499 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:54,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:54,500 INFO L82 PathProgramCache]: Analyzing trace with hash -829967440, now seen corresponding path program 1 times [2020-10-12 11:17:54,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:54,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413189357] [2020-10-12 11:17:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:54,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:54,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:54,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:54,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:55,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:56,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:57,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:58,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:59,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:59,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-12 11:17:59,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 11:17:59,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 11:17:59,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:59,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:17:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:17:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 11:17:59,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:59,738 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:59,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:59,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:59,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:59,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:59,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:59,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:17:59,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:17:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:59,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:17:59,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:59,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:59,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:59,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:59,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:59,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:59,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 11:17:59,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:59,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:59,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:59,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:17:59,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:59,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:59,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:59,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:59,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:59,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:59,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:17:59,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:17:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 11:17:59,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:59,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:17:59,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:59,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 11:17:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:00,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:00,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:00,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:18:00,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:00,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 11:18:00,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:00,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:18:00,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 44 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 11:18:00,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413189357] [2020-10-12 11:18:00,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:00,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:18:00,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90912643] [2020-10-12 11:18:00,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:18:00,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:00,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:18:00,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:18:00,117 INFO L87 Difference]: Start difference. First operand 2018 states and 2854 transitions. Second operand 9 states. [2020-10-12 11:18:00,380 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:18:00,662 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:18:01,605 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:18:07,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:07,404 INFO L93 Difference]: Finished difference Result 8327 states and 14340 transitions. [2020-10-12 11:18:07,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 11:18:07,405 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 196 [2020-10-12 11:18:07,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:07,457 INFO L225 Difference]: With dead ends: 8327 [2020-10-12 11:18:07,457 INFO L226 Difference]: Without dead ends: 6575 [2020-10-12 11:18:07,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-10-12 11:18:07,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6575 states. [2020-10-12 11:18:07,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6575 to 6435. [2020-10-12 11:18:07,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6435 states. [2020-10-12 11:18:07,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6435 states to 6435 states and 9472 transitions. [2020-10-12 11:18:07,690 INFO L78 Accepts]: Start accepts. Automaton has 6435 states and 9472 transitions. Word has length 196 [2020-10-12 11:18:07,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:07,690 INFO L479 AbstractCegarLoop]: Abstraction has 6435 states and 9472 transitions. [2020-10-12 11:18:07,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:18:07,690 INFO L276 IsEmpty]: Start isEmpty. Operand 6435 states and 9472 transitions. [2020-10-12 11:18:07,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-12 11:18:07,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:07,708 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:07,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:18:07,709 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:07,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:07,709 INFO L82 PathProgramCache]: Analyzing trace with hash -639284052, now seen corresponding path program 1 times [2020-10-12 11:18:07,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:07,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272714550] [2020-10-12 11:18:07,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:07,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:07,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:07,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:08,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:08,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:10,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:10,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:12,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:12,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-12 11:18:12,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 11:18:12,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 11:18:12,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:12,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:18:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 11:18:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:12,968 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:12,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:12,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:12,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:12,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:12,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:18:12,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:12,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:13,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:13,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:13,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:13,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:18:13,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:13,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 11:18:13,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:13,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:18:13,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:13,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:18:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:13,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:13,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:18:13,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:13,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 11:18:13,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:13,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:13,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:13,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:18:13,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:13,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 11:18:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:13,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:13,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:13,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:13,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:18:13,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:13,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:18:13,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 11:18:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:13,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:13,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 11:18:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:13,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:13,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:13,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:18:13,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:13,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:18:13,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:13,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 11:18:13,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:13,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 86 proven. 32 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-12 11:18:13,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272714550] [2020-10-12 11:18:13,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:13,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:18:13,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430410059] [2020-10-12 11:18:13,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:18:13,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:13,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:18:13,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:18:13,635 INFO L87 Difference]: Start difference. First operand 6435 states and 9472 transitions. Second operand 9 states. [2020-10-12 11:18:13,829 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:18:14,066 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:18:15,586 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 11:18:17,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:17,868 INFO L93 Difference]: Finished difference Result 14969 states and 22798 transitions. [2020-10-12 11:18:17,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 11:18:17,869 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 241 [2020-10-12 11:18:17,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:17,951 INFO L225 Difference]: With dead ends: 14969 [2020-10-12 11:18:17,952 INFO L226 Difference]: Without dead ends: 9646 [2020-10-12 11:18:17,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-10-12 11:18:17,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9646 states. [2020-10-12 11:18:18,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9646 to 9600. [2020-10-12 11:18:18,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9600 states. [2020-10-12 11:18:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9600 states to 9600 states and 14313 transitions. [2020-10-12 11:18:18,269 INFO L78 Accepts]: Start accepts. Automaton has 9600 states and 14313 transitions. Word has length 241 [2020-10-12 11:18:18,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:18,269 INFO L479 AbstractCegarLoop]: Abstraction has 9600 states and 14313 transitions. [2020-10-12 11:18:18,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:18:18,269 INFO L276 IsEmpty]: Start isEmpty. Operand 9600 states and 14313 transitions. [2020-10-12 11:18:18,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-12 11:18:18,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:18,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:18,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:18:18,301 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:18,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:18,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1180768724, now seen corresponding path program 1 times [2020-10-12 11:18:18,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:18,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348845147] [2020-10-12 11:18:18,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:18,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:18,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:19,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:19,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-12 11:18:19,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:19,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1434 [2020-10-12 11:18:19,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:19,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:19,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-12 11:18:19,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-12 11:18:19,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:20,007 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:20,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:20,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:20,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:20,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:20,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:20,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:18:20,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:20,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:20,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:20,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:20,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:20,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:18:20,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:20,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:18:20,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:20,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:20,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:20,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:20,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:18:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:20,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:20,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:20,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 11:18:20,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:20,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 11:18:20,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 11:18:20,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 11:18:20,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348845147] [2020-10-12 11:18:20,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:20,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:18:20,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709079510] [2020-10-12 11:18:20,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:18:20,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:20,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:18:20,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:18:20,319 INFO L87 Difference]: Start difference. First operand 9600 states and 14313 transitions. Second operand 6 states. [2020-10-12 11:18:20,471 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:18:21,342 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:18:24,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:24,289 INFO L93 Difference]: Finished difference Result 34261 states and 53464 transitions. [2020-10-12 11:18:24,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:18:24,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 257 [2020-10-12 11:18:24,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:24,433 INFO L225 Difference]: With dead ends: 34261 [2020-10-12 11:18:24,433 INFO L226 Difference]: Without dead ends: 24927 [2020-10-12 11:18:24,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:18:24,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24927 states. [2020-10-12 11:18:25,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24927 to 24897. [2020-10-12 11:18:25,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24897 states. [2020-10-12 11:18:25,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24897 states to 24897 states and 36577 transitions. [2020-10-12 11:18:25,240 INFO L78 Accepts]: Start accepts. Automaton has 24897 states and 36577 transitions. Word has length 257 [2020-10-12 11:18:25,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:25,241 INFO L479 AbstractCegarLoop]: Abstraction has 24897 states and 36577 transitions. [2020-10-12 11:18:25,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:18:25,241 INFO L276 IsEmpty]: Start isEmpty. Operand 24897 states and 36577 transitions. [2020-10-12 11:18:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-12 11:18:25,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:25,316 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:25,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:18:25,316 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:25,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:25,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1893299663, now seen corresponding path program 1 times [2020-10-12 11:18:25,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:25,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107404950] [2020-10-12 11:18:25,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:25,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:25,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:28,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:28,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-12 11:18:28,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:28,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2931 [2020-10-12 11:18:28,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:28,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:18:28,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:28,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 11:18:28,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:28,547 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:28,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:28,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:28,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:28,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:28,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:28,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:18:28,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:28,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:28,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:28,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:28,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:28,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:18:28,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 11:18:28,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:18:28,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:28,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:18:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:28,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:29,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:29,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 11:18:29,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:29,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 11:18:29,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 11:18:29,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 11:18:29,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107404950] [2020-10-12 11:18:29,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:29,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:18:29,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821085966] [2020-10-12 11:18:29,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:18:29,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:29,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:18:29,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:18:29,144 INFO L87 Difference]: Start difference. First operand 24897 states and 36577 transitions. Second operand 7 states. [2020-10-12 11:18:29,312 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:18:32,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:32,980 INFO L93 Difference]: Finished difference Result 73028 states and 115729 transitions. [2020-10-12 11:18:32,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:18:32,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-10-12 11:18:32,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:33,311 INFO L225 Difference]: With dead ends: 73028 [2020-10-12 11:18:33,311 INFO L226 Difference]: Without dead ends: 50320 [2020-10-12 11:18:33,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:18:33,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50320 states. [2020-10-12 11:18:34,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50320 to 49610. [2020-10-12 11:18:34,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49610 states. [2020-10-12 11:18:34,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49610 states to 49610 states and 74726 transitions. [2020-10-12 11:18:34,957 INFO L78 Accepts]: Start accepts. Automaton has 49610 states and 74726 transitions. Word has length 264 [2020-10-12 11:18:34,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:34,957 INFO L479 AbstractCegarLoop]: Abstraction has 49610 states and 74726 transitions. [2020-10-12 11:18:34,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:18:34,958 INFO L276 IsEmpty]: Start isEmpty. Operand 49610 states and 74726 transitions. [2020-10-12 11:18:35,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-12 11:18:35,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:35,057 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:35,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:18:35,058 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:35,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:35,058 INFO L82 PathProgramCache]: Analyzing trace with hash 2140723857, now seen corresponding path program 1 times [2020-10-12 11:18:35,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:35,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045435642] [2020-10-12 11:18:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:35,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:35,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:37,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:37,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-12 11:18:37,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:37,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2411 [2020-10-12 11:18:37,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:37,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:18:37,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:37,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 11:18:37,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:37,743 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:37,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:37,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:37,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:37,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:37,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:37,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:18:37,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:37,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:37,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:37,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:37,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:37,880 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:18:37,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:37,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:37,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:37,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:18:37,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:37,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 11:18:37,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:37,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:37,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:18:37,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:18:37,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:18:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:37,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:38,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:38,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 11:18:38,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:38,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 11:18:38,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:38,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:38,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:38,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 11:18:38,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:18:38,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 11:18:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:38,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:38,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:38,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 11:18:38,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:38,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-12 11:18:38,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:38,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:38,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:38,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 11:18:38,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 105 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 11:18:38,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045435642] [2020-10-12 11:18:38,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:38,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:18:38,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98949717] [2020-10-12 11:18:38,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:18:38,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:38,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:18:38,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:18:38,673 INFO L87 Difference]: Start difference. First operand 49610 states and 74726 transitions. Second operand 9 states. [2020-10-12 11:18:38,837 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:18:42,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:42,772 INFO L93 Difference]: Finished difference Result 139701 states and 222965 transitions. [2020-10-12 11:18:42,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:18:42,773 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 266 [2020-10-12 11:18:42,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:45,326 INFO L225 Difference]: With dead ends: 139701 [2020-10-12 11:18:45,327 INFO L226 Difference]: Without dead ends: 94211 [2020-10-12 11:18:45,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:18:45,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94211 states. [2020-10-12 11:18:47,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94211 to 92971. [2020-10-12 11:18:47,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92971 states. [2020-10-12 11:18:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92971 states to 92971 states and 140958 transitions. [2020-10-12 11:18:48,037 INFO L78 Accepts]: Start accepts. Automaton has 92971 states and 140958 transitions. Word has length 266 [2020-10-12 11:18:48,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:48,037 INFO L479 AbstractCegarLoop]: Abstraction has 92971 states and 140958 transitions. [2020-10-12 11:18:48,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:18:48,038 INFO L276 IsEmpty]: Start isEmpty. Operand 92971 states and 140958 transitions. [2020-10-12 11:18:48,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-12 11:18:48,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:48,203 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:18:48,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:18:48,204 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:48,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:48,205 INFO L82 PathProgramCache]: Analyzing trace with hash 505018114, now seen corresponding path program 1 times [2020-10-12 11:18:48,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:48,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686110566] [2020-10-12 11:18:48,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:49,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:49,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:49,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-12 11:18:49,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:49,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-10-12 11:18:49,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 11:18:49,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 11:18:49,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:49,772 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:49,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:49,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:49,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:49,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:49,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:49,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:18:49,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:49,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:49,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:49,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:49,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:49,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:49,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:49,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:49,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:18:49,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:49,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:18:49,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:49,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:49,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:49,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:49,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:18:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:49,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:49,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:49,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 11:18:49,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:49,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 11:18:49,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:49,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:49,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:49,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 11:18:49,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:49,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 11:18:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:50,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:50,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 11:18:50,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 11:18:50,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 11:18:50,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:18:50,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686110566] [2020-10-12 11:18:50,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:50,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:18:50,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276626004] [2020-10-12 11:18:50,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:18:50,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:50,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:18:50,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:18:50,541 INFO L87 Difference]: Start difference. First operand 92971 states and 140958 transitions. Second operand 7 states. [2020-10-12 11:18:50,776 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:18:55,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:55,371 INFO L93 Difference]: Finished difference Result 221722 states and 335684 transitions. [2020-10-12 11:18:55,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:18:55,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2020-10-12 11:18:55,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:56,039 INFO L225 Difference]: With dead ends: 221722 [2020-10-12 11:18:56,039 INFO L226 Difference]: Without dead ends: 135883 [2020-10-12 11:18:56,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:18:56,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135883 states. [2020-10-12 11:19:02,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135883 to 135800. [2020-10-12 11:19:02,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135800 states. [2020-10-12 11:19:03,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135800 states to 135800 states and 204543 transitions. [2020-10-12 11:19:03,022 INFO L78 Accepts]: Start accepts. Automaton has 135800 states and 204543 transitions. Word has length 287 [2020-10-12 11:19:03,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:03,022 INFO L479 AbstractCegarLoop]: Abstraction has 135800 states and 204543 transitions. [2020-10-12 11:19:03,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:19:03,023 INFO L276 IsEmpty]: Start isEmpty. Operand 135800 states and 204543 transitions. [2020-10-12 11:19:03,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-12 11:19:03,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:03,181 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:19:03,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:19:03,182 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:03,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:03,182 INFO L82 PathProgramCache]: Analyzing trace with hash 974882663, now seen corresponding path program 1 times [2020-10-12 11:19:03,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:03,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262571584] [2020-10-12 11:19:03,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:03,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:04,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:08,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:08,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-12 11:19:08,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:19:08,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-12 11:19:08,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:19:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:19:08,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:08,506 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:08,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:08,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:08,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:08,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:08,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:08,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:19:08,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:08,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:08,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:08,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:08,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:08,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:08,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:08,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:08,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:19:08,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:08,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:19:08,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:08,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:08,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:08,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:19:08,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:08,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:19:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:08,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:08,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:08,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:19:08,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:08,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 11:19:08,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:08,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:08,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:08,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:19:08,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:08,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:19:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:08,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:08,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:08,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:19:08,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:08,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 11:19:08,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:08,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:08,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 11:19:08,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:08,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:08,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 11:19:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:08,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:08,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:08,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 11:19:08,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:19:08,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 11:19:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 136 proven. 68 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-12 11:19:08,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262571584] [2020-10-12 11:19:08,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:08,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:19:08,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39720335] [2020-10-12 11:19:08,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:19:08,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:08,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:19:08,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:19:08,940 INFO L87 Difference]: Start difference. First operand 135800 states and 204543 transitions. Second operand 8 states. [2020-10-12 11:19:09,124 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:19:09,995 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:19:14,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:14,975 INFO L93 Difference]: Finished difference Result 301414 states and 454003 transitions. [2020-10-12 11:19:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 11:19:14,975 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 289 [2020-10-12 11:19:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:15,502 INFO L225 Difference]: With dead ends: 301414 [2020-10-12 11:19:15,502 INFO L226 Difference]: Without dead ends: 172721 [2020-10-12 11:19:15,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:19:15,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172721 states. [2020-10-12 11:19:19,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172721 to 172369. [2020-10-12 11:19:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172369 states. [2020-10-12 11:19:19,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172369 states to 172369 states and 247541 transitions. [2020-10-12 11:19:19,942 INFO L78 Accepts]: Start accepts. Automaton has 172369 states and 247541 transitions. Word has length 289 [2020-10-12 11:19:19,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:19,942 INFO L479 AbstractCegarLoop]: Abstraction has 172369 states and 247541 transitions. [2020-10-12 11:19:19,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:19:19,942 INFO L276 IsEmpty]: Start isEmpty. Operand 172369 states and 247541 transitions. [2020-10-12 11:19:20,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-12 11:19:20,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:20,054 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:19:20,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:19:20,054 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:20,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:20,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1653058898, now seen corresponding path program 1 times [2020-10-12 11:19:20,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:20,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464411581] [2020-10-12 11:19:20,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:20,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:20,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:25,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:25,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-12 11:19:25,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:19:25,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 11:19:25,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:25,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:19:25,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:25,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-12 11:19:25,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:25,420 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:25,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:25,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:25,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:25,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:25,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:19:25,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:25,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:25,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:19:25,574 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:19:25,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:25,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:25,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:25,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:19:25,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:25,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-12 11:19:25,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:19:25,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:25,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:19:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:25,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:26,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:26,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 11:19:26,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:26,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 11:19:26,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:26,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:26,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:26,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 11:19:26,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 154 proven. 54 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:19:26,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464411581] [2020-10-12 11:19:26,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:26,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:19:26,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083727538] [2020-10-12 11:19:26,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:19:26,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:26,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:19:26,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:19:26,311 INFO L87 Difference]: Start difference. First operand 172369 states and 247541 transitions. Second operand 8 states. [2020-10-12 11:19:26,495 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:19:27,875 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:19:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:32,646 INFO L93 Difference]: Finished difference Result 403497 states and 584809 transitions. [2020-10-12 11:19:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:19:32,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 313 [2020-10-12 11:19:32,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:34,183 INFO L225 Difference]: With dead ends: 403497 [2020-10-12 11:19:34,184 INFO L226 Difference]: Without dead ends: 234391 [2020-10-12 11:19:34,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:19:34,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234391 states. [2020-10-12 11:19:38,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234391 to 234145. [2020-10-12 11:19:38,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234145 states.