/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/Problem06_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:04:38,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:04:38,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:04:38,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:04:38,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:04:38,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:04:38,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:04:38,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:04:38,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:04:38,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:04:38,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:04:38,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:04:38,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:04:38,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:04:38,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:04:38,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:04:38,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:04:38,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:04:38,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:04:38,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:04:38,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:04:38,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:04:38,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:04:38,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:04:38,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:04:38,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:04:38,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:04:38,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:04:38,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:04:38,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:04:38,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:04:38,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:04:38,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:04:38,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:04:38,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:04:38,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:04:38,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:04:38,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:04:38,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:04:38,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:04:38,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:04:38,355 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 12:04:38,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:04:38,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:04:38,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:04:38,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:04:38,411 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:04:38,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:04:38,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:04:38,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:04:38,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:04:38,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:04:38,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:04:38,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:04:38,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:04:38,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:04:38,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:04:38,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:04:38,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:04:38,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:04:38,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:04:38,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:04:38,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:04:38,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:04:38,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:04:38,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:04:38,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:04:38,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:04:38,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:04:38,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:04:38,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:04:38,417 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 12:04:38,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:04:38,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:04:38,750 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:04:38,751 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:04:38,752 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:04:38,753 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label13.c [2020-10-12 12:04:38,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e4bbc6f5/1de673468b234a27a7022f3859197a86/FLAGe2faf6fe6 [2020-10-12 12:04:39,735 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:04:39,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label13.c [2020-10-12 12:04:39,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e4bbc6f5/1de673468b234a27a7022f3859197a86/FLAGe2faf6fe6 [2020-10-12 12:04:40,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9e4bbc6f5/1de673468b234a27a7022f3859197a86 [2020-10-12 12:04:40,176 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:04:40,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:04:40,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:04:40,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:04:40,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:04:40,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:04:40" (1/1) ... [2020-10-12 12:04:40,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fad44cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:40, skipping insertion in model container [2020-10-12 12:04:40,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:04:40" (1/1) ... [2020-10-12 12:04:40,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:04:40,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:04:42,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:04:42,854 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:04:43,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:04:43,987 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:04:43,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:43 WrapperNode [2020-10-12 12:04:43,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:04:43,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:04:43,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:04:43,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:04:44,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:43" (1/1) ... [2020-10-12 12:04:44,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:43" (1/1) ... [2020-10-12 12:04:44,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:43" (1/1) ... [2020-10-12 12:04:44,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:43" (1/1) ... [2020-10-12 12:04:44,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:43" (1/1) ... [2020-10-12 12:04:44,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:43" (1/1) ... [2020-10-12 12:04:44,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:43" (1/1) ... [2020-10-12 12:04:44,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:04:44,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:04:44,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:04:44,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:04:44,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:43" (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 12:04:44,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:04:44,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:04:44,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:04:44,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:04:44,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:04:44,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:04:44,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:04:44,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:04:44,511 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:04:44,511 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:04:44,511 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:04:44,511 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:04:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:04:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:04:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:04:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:04:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:04:44,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:04:44,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:04:52,025 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:04:52,025 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:04:52,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:04:52 BoogieIcfgContainer [2020-10-12 12:04:52,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:04:52,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:04:52,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:04:52,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:04:52,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:04:40" (1/3) ... [2020-10-12 12:04:52,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e23d670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:04:52, skipping insertion in model container [2020-10-12 12:04:52,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:04:43" (2/3) ... [2020-10-12 12:04:52,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e23d670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:04:52, skipping insertion in model container [2020-10-12 12:04:52,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:04:52" (3/3) ... [2020-10-12 12:04:52,046 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label13.c [2020-10-12 12:04:52,057 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:04:52,067 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:04:52,081 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:04:52,111 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:04:52,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:04:52,112 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:04:52,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:04:52,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:04:52,112 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:04:52,112 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:04:52,112 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:04:52,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:04:52,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2020-10-12 12:04:52,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:04:52,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:04:52,218 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:04:52,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:04:52,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1418387552, now seen corresponding path program 1 times [2020-10-12 12:04:52,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:04:52,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204407507] [2020-10-12 12:04:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:04:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:04:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:04:56,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:04:58,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:04:58,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 989 [2020-10-12 12:04:58,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:04:58,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5192 [2020-10-12 12:04:58,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:04:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:04:58,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:04:58,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:04:58,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 12:05:01,681 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-12 12:05:01,908 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-12 12:05:02,132 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-12 12:05:02,325 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-12 12:05:02,496 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-12 12:05:02,666 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-12 12:05:02,880 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-12 12:05:03,047 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-12 12:05:03,206 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-12 12:05:03,373 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-12 12:05:03,961 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:05:03,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:05:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:05:03,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:05:03,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:05:04,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:05:04,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:05:04,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 12:05:04,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:05:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:05:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:05:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:05:04,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:05:14,642 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 12:05:14,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204407507] [2020-10-12 12:05:14,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:05:14,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 12:05:14,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443174417] [2020-10-12 12:05:14,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 12:05:14,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:05:14,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 12:05:14,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:05:14,668 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-12 12:05:15,017 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 12:05:15,647 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-12 12:05:16,199 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-12 12:05:16,884 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 174 [2020-10-12 12:05:20,541 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 173 [2020-10-12 12:05:23,683 WARN L193 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 172 [2020-10-12 12:05:25,902 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-12 12:05:26,520 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 169 [2020-10-12 12:05:27,353 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 168 [2020-10-12 12:05:35,626 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 161 [2020-10-12 12:05:36,235 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 166 [2020-10-12 12:05:38,787 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 165 [2020-10-12 12:05:45,607 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 159 [2020-10-12 12:05:46,216 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-12 12:05:48,259 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 161 [2020-10-12 12:05:59,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:05:59,095 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:05:59,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:05:59,097 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 973 [2020-10-12 12:05:59,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:05:59,146 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:05:59,146 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:05:59,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 12:05:59,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:05:59,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:05:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:05:59,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-12 12:05:59,308 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 973 [2020-10-12 12:05:59,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:05:59,311 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-12 12:05:59,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 12:05:59,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-12 12:05:59,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2020-10-12 12:05:59,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:05:59,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:05:59,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:05:59,375 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:05:59,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:05:59,376 INFO L82 PathProgramCache]: Analyzing trace with hash -258780499, now seen corresponding path program 1 times [2020-10-12 12:05:59,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:05:59,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172901434] [2020-10-12 12:05:59,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:05:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:00,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:00,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:04,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:04,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1061 [2020-10-12 12:06:04,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:06:04,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 12:06:04,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:04,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:06:04,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:06:04,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 980 [2020-10-12 12:06:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:06:05,788 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:06:05,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:06:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:05,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:05,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:05,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:06:05,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:06:05,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 12:06:05,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:05,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:06:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:06:05,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:06:05,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:06:05,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:06:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:05,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:06,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:06,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:06:06,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:06:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 12:06:06,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:06,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:06:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:06:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:06:06,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 12:06:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:06:07,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172901434] [2020-10-12 12:06:07,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:06:07,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:06:07,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792087028] [2020-10-12 12:06:07,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 12:06:07,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:06:07,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 12:06:07,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:06:07,610 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 6 states. [2020-10-12 12:06:07,771 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:06:08,193 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:06:29,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:06:29,082 INFO L93 Difference]: Finished difference Result 5487 states and 9498 transitions. [2020-10-12 12:06:29,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 12:06:29,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1043 [2020-10-12 12:06:29,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:06:29,108 INFO L225 Difference]: With dead ends: 5487 [2020-10-12 12:06:29,108 INFO L226 Difference]: Without dead ends: 4228 [2020-10-12 12:06:29,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 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 12:06:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4228 states. [2020-10-12 12:06:29,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4228 to 4142. [2020-10-12 12:06:29,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4142 states. [2020-10-12 12:06:29,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4142 states to 4142 states and 6519 transitions. [2020-10-12 12:06:29,243 INFO L78 Accepts]: Start accepts. Automaton has 4142 states and 6519 transitions. Word has length 1043 [2020-10-12 12:06:29,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:06:29,245 INFO L479 AbstractCegarLoop]: Abstraction has 4142 states and 6519 transitions. [2020-10-12 12:06:29,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 12:06:29,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4142 states and 6519 transitions. [2020-10-12 12:06:29,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2020-10-12 12:06:29,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:06:29,267 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:06:29,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:06:29,268 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:06:29,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:06:29,269 INFO L82 PathProgramCache]: Analyzing trace with hash 42036442, now seen corresponding path program 1 times [2020-10-12 12:06:29,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:06:29,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862802885] [2020-10-12 12:06:29,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:06:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:29,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:29,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:34,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:34,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1072 [2020-10-12 12:06:34,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:06:34,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5278 [2020-10-12 12:06:34,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 12:06:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:06:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 12:06:34,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 12:06:35,256 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:06:35,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:06:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:35,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:35,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:35,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:06:35,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:06:35,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 12:06:35,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:35,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:06:35,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:06:35,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:06:35,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:06:35,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:06:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:35,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:35,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:35,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:06:35,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:06:35,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-12 12:06:35,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:06:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:06:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:06:35,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:06:35,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:06:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:35,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:35,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:06:35,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 12:06:35,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:06:35,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 12:06:35,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:06:35,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:06:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 12:06:35,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:06:35,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:06:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 12:06:37,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862802885] [2020-10-12 12:06:37,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:06:37,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:06:37,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254419681] [2020-10-12 12:06:37,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:06:37,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:06:37,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:06:37,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:06:37,014 INFO L87 Difference]: Start difference. First operand 4142 states and 6519 transitions. Second operand 7 states. [2020-10-12 12:06:37,188 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 12:06:38,310 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 12:06:58,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:06:58,129 INFO L93 Difference]: Finished difference Result 10897 states and 18182 transitions. [2020-10-12 12:06:58,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 12:06:58,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1052 [2020-10-12 12:06:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:06:58,171 INFO L225 Difference]: With dead ends: 10897 [2020-10-12 12:06:58,171 INFO L226 Difference]: Without dead ends: 7515 [2020-10-12 12:06:58,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 12:06:58,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7515 states. [2020-10-12 12:06:58,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7515 to 7390. [2020-10-12 12:06:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7390 states. [2020-10-12 12:06:58,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7390 states to 7390 states and 11011 transitions. [2020-10-12 12:06:58,402 INFO L78 Accepts]: Start accepts. Automaton has 7390 states and 11011 transitions. Word has length 1052 [2020-10-12 12:06:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:06:58,403 INFO L479 AbstractCegarLoop]: Abstraction has 7390 states and 11011 transitions. [2020-10-12 12:06:58,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 12:06:58,403 INFO L276 IsEmpty]: Start isEmpty. Operand 7390 states and 11011 transitions. [2020-10-12 12:06:58,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1105 [2020-10-12 12:06:58,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:06:58,433 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 12:06:58,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:06:58,434 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:06:58,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:06:58,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1242272547, now seen corresponding path program 1 times [2020-10-12 12:06:58,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:06:58,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813987407] [2020-10-12 12:06:58,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:06:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:06:58,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:06:59,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:01,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:03,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:03,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1124 [2020-10-12 12:07:03,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:07:03,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-12 12:07:03,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:07:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-12 12:07:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 980 [2020-10-12 12:07:03,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:04,382 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:07:04,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:07:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:04,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:04,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:07:04,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:04,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 12:07:04,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:07:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:07:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:07:04,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:04,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:07:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:04,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:04,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:04,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:07:04,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:04,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 12:07:04,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:07:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:07:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:07:04,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:04,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:07:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:04,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:04,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:04,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 12:07:04,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:04,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 12:07:04,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:04,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:07:04,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:07:04,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 12:07:04,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:05,823 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 12:07:05,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813987407] [2020-10-12 12:07:05,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:07:05,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:07:05,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364340328] [2020-10-12 12:07:05,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 12:07:05,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:07:05,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 12:07:05,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:07:05,827 INFO L87 Difference]: Start difference. First operand 7390 states and 11011 transitions. Second operand 6 states. [2020-10-12 12:07:05,975 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:07:06,711 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:07:28,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:07:28,928 INFO L93 Difference]: Finished difference Result 26546 states and 42105 transitions. [2020-10-12 12:07:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 12:07:28,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1104 [2020-10-12 12:07:28,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:07:29,011 INFO L225 Difference]: With dead ends: 26546 [2020-10-12 12:07:29,011 INFO L226 Difference]: Without dead ends: 19916 [2020-10-12 12:07:29,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:07:29,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19916 states. [2020-10-12 12:07:29,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19916 to 19856. [2020-10-12 12:07:29,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19856 states. [2020-10-12 12:07:29,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19856 states to 19856 states and 29317 transitions. [2020-10-12 12:07:29,618 INFO L78 Accepts]: Start accepts. Automaton has 19856 states and 29317 transitions. Word has length 1104 [2020-10-12 12:07:29,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:07:29,620 INFO L479 AbstractCegarLoop]: Abstraction has 19856 states and 29317 transitions. [2020-10-12 12:07:29,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 12:07:29,624 INFO L276 IsEmpty]: Start isEmpty. Operand 19856 states and 29317 transitions. [2020-10-12 12:07:29,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1120 [2020-10-12 12:07:29,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:07:29,687 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:07:29,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:07:29,688 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:07:29,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:07:29,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1351598652, now seen corresponding path program 1 times [2020-10-12 12:07:29,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:07:29,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315209035] [2020-10-12 12:07:29,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:07:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:30,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:30,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:31,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:35,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:35,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1141 [2020-10-12 12:07:35,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:07:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5140 [2020-10-12 12:07:35,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:07:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:07:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 12:07:35,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:35,384 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:07:35,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:07:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:35,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:35,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:07:35,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 12:07:35,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:07:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:07:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:07:35,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:35,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:07:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:35,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:35,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:35,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:07:35,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:35,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-12 12:07:35,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:35,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:07:35,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:07:35,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 12:07:35,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:35,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:07:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:35,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:35,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:35,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 12:07:35,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:35,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 12:07:35,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:35,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:07:35,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:07:35,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 12:07:35,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:35,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-12 12:07:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:35,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:35,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:07:35,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:07:35,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:07:35,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 12:07:35,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:07:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:07:35,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 12:07:35,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:07:35,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:07:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 141 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 12:07:37,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315209035] [2020-10-12 12:07:37,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:07:37,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 12:07:37,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967358689] [2020-10-12 12:07:37,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:07:37,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:07:37,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:07:37,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:07:37,019 INFO L87 Difference]: Start difference. First operand 19856 states and 29317 transitions. Second operand 8 states. [2020-10-12 12:07:37,182 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:07:57,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:07:57,728 INFO L93 Difference]: Finished difference Result 58575 states and 89619 transitions. [2020-10-12 12:07:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 12:07:57,729 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1119 [2020-10-12 12:07:57,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:07:57,903 INFO L225 Difference]: With dead ends: 58575 [2020-10-12 12:07:57,904 INFO L226 Difference]: Without dead ends: 39479 [2020-10-12 12:07:57,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 12:07:58,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39479 states. [2020-10-12 12:07:59,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39479 to 39389. [2020-10-12 12:07:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39389 states. [2020-10-12 12:07:59,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39389 states to 39389 states and 60078 transitions. [2020-10-12 12:07:59,111 INFO L78 Accepts]: Start accepts. Automaton has 39389 states and 60078 transitions. Word has length 1119 [2020-10-12 12:07:59,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:07:59,111 INFO L479 AbstractCegarLoop]: Abstraction has 39389 states and 60078 transitions. [2020-10-12 12:07:59,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 12:07:59,112 INFO L276 IsEmpty]: Start isEmpty. Operand 39389 states and 60078 transitions. [2020-10-12 12:07:59,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1122 [2020-10-12 12:07:59,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:07:59,222 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:07:59,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 12:07:59,222 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:07:59,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:07:59,223 INFO L82 PathProgramCache]: Analyzing trace with hash -999785336, now seen corresponding path program 1 times [2020-10-12 12:07:59,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:07:59,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196854137] [2020-10-12 12:07:59,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:07:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:07:59,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:07:59,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:08:01,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:08:04,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:08:04,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1143 [2020-10-12 12:08:04,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:08:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-12 12:08:04,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:08:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:08:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:08:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 12:08:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:08:04,799 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:08:04,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:08:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:08:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:08:04,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:08:04,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:08:04,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:08:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 12:08:04,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:08:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:08:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:08:04,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:08:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:08:04,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:08:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:08:04,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:08:05,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:08:05,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:08:05,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 12:08:05,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:08:05,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-12 12:08:05,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:08:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:08:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:08:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 12:08:05,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:08:05,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-12 12:08:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:08:05,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:08:05,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:08:05,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 12:08:05,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:08:05,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 12:08:05,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:08:05,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:08:05,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:08:05,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 12:08:05,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:08:05,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-12 12:08:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:08:05,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:08:05,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:08:05,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:08:05,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:08:05,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 12:08:05,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:08:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:08:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 12:08:05,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:08:05,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:08:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 145 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 12:08:06,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196854137] [2020-10-12 12:08:06,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:08:06,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 12:08:06,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792511475] [2020-10-12 12:08:06,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 12:08:06,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:08:06,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 12:08:06,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:08:06,428 INFO L87 Difference]: Start difference. First operand 39389 states and 60078 transitions. Second operand 8 states. [2020-10-12 12:08:06,584 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:08:07,879 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 130