/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:19:43,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:19:43,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:19:43,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:19:43,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:19:43,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:19:43,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:19:43,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:19:43,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:19:43,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:19:43,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:19:43,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:19:43,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:19:43,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:19:43,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:19:43,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:19:43,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:19:43,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:19:43,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:19:43,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:19:43,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:19:43,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:19:43,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:19:43,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:19:43,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:19:43,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:19:43,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:19:43,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:19:43,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:19:43,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:19:43,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:19:43,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:19:43,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:19:43,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:19:43,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:19:43,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:19:43,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:19:43,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:19:43,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:19:43,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:19:43,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:19:43,297 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 11:19:43,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:19:43,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:19:43,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:19:43,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:19:43,322 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:19:43,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:19:43,322 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:19:43,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:19:43,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:19:43,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:19:43,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:19:43,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:19:43,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:19:43,323 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:19:43,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:19:43,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:19:43,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:19:43,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:19:43,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:19:43,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:19:43,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:19:43,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:19:43,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:19:43,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:19:43,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:19:43,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:19:43,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:19:43,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:19:43,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:19:43,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:19:43,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:19:43,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:19:43,668 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:19:43,670 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:19:43,670 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:19:43,671 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label17.c [2020-10-12 11:19:43,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4d4b7ba0/8da369dd4204497ca7130ca41ba4922e/FLAG00c51a4a9 [2020-10-12 11:19:44,343 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:19:44,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label17.c [2020-10-12 11:19:44,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4d4b7ba0/8da369dd4204497ca7130ca41ba4922e/FLAG00c51a4a9 [2020-10-12 11:19:44,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4d4b7ba0/8da369dd4204497ca7130ca41ba4922e [2020-10-12 11:19:44,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:19:44,573 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:19:44,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:19:44,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:19:44,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:19:44,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:19:44" (1/1) ... [2020-10-12 11:19:44,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe12ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:44, skipping insertion in model container [2020-10-12 11:19:44,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:19:44" (1/1) ... [2020-10-12 11:19:44,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:19:44,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:19:45,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:19:45,436 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:19:45,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:19:45,845 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:19:45,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:45 WrapperNode [2020-10-12 11:19:45,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:19:45,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:19:45,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:19:45,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:19:45,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:45" (1/1) ... [2020-10-12 11:19:45,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:45" (1/1) ... [2020-10-12 11:19:45,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:45" (1/1) ... [2020-10-12 11:19:45,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:45" (1/1) ... [2020-10-12 11:19:45,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:45" (1/1) ... [2020-10-12 11:19:46,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:45" (1/1) ... [2020-10-12 11:19:46,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:45" (1/1) ... [2020-10-12 11:19:46,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:19:46,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:19:46,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:19:46,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:19:46,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:19:46,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:19:46,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:19:46,102 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:19:46,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:19:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:19:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:19:46,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:19:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:19:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:19:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:19:46,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:19:48,026 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:19:48,026 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:19:48,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:19:48 BoogieIcfgContainer [2020-10-12 11:19:48,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:19:48,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:19:48,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:19:48,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:19:48,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:19:44" (1/3) ... [2020-10-12 11:19:48,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1c6e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:19:48, skipping insertion in model container [2020-10-12 11:19:48,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:45" (2/3) ... [2020-10-12 11:19:48,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1c6e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:19:48, skipping insertion in model container [2020-10-12 11:19:48,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:19:48" (3/3) ... [2020-10-12 11:19:48,043 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label17.c [2020-10-12 11:19:48,054 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:19:48,062 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:19:48,076 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:19:48,104 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:19:48,104 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:19:48,105 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:19:48,105 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:19:48,105 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:19:48,105 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:19:48,105 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:19:48,105 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:19:48,132 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:19:48,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-12 11:19:48,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:48,151 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] [2020-10-12 11:19:48,152 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:48,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:48,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1924076088, now seen corresponding path program 1 times [2020-10-12 11:19:48,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:48,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908107282] [2020-10-12 11:19:48,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:49,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:52,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:52,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-12 11:19:52,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:19:52,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3526 [2020-10-12 11:19:52,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:52,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:19:52,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:52,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:19:52,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:19:53,347 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-10-12 11:19:53,545 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2020-10-12 11:19:53,744 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2020-10-12 11:19:53,922 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-10-12 11:19:54,165 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:54,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:54,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:54,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:54,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:54,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:54,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:19:54,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:54,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:54,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:19:54,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908107282] [2020-10-12 11:19:54,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:19:54,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 11:19:54,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185321394] [2020-10-12 11:19:54,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 11:19:54,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:54,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 11:19:54,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:19:54,980 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-12 11:19:55,358 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 11:19:56,070 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-12 11:19:56,692 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2020-10-12 11:19:57,409 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 174 [2020-10-12 11:19:58,571 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 193 DAG size of output: 173 [2020-10-12 11:19:59,928 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 193 DAG size of output: 172 [2020-10-12 11:20:01,378 WARN L193 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 171 [2020-10-12 11:20:04,580 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 197 DAG size of output: 170 [2020-10-12 11:20:05,829 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 169 [2020-10-12 11:20:08,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:08,493 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:20:08,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:20:08,499 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 205 [2020-10-12 11:20:08,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:08,533 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:20:08,533 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:20:08,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-12 11:20:08,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:20:08,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:20:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:20:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-12 11:20:08,629 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 205 [2020-10-12 11:20:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:08,630 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-12 11:20:08,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 11:20:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-12 11:20:08,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-12 11:20:08,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:08,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:08,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:20:08,637 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:08,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:08,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1262310047, now seen corresponding path program 1 times [2020-10-12 11:20:08,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:08,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379323932] [2020-10-12 11:20:08,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:08,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:12,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:13,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:13,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-12 11:20:13,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:20:13,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 11:20:13,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:13,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:20:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:20:13,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:20:13,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:15,100 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 77 [2020-10-12 11:20:15,318 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 77 [2020-10-12 11:20:15,501 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-10-12 11:20:15,682 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2020-10-12 11:20:15,843 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-12 11:20:16,036 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:16,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:16,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:16,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:16,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:16,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:16,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:20:16,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:16,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:16,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:16,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:20:16,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:16,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:16,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:16,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:16,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:20:16,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:16,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 11:20:16,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:20:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:16,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:20:16,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:16,799 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 112 [2020-10-12 11:20:17,326 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 133 [2020-10-12 11:20:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:20:17,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379323932] [2020-10-12 11:20:17,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:17,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:20:17,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69595878] [2020-10-12 11:20:17,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:20:17,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:17,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:20:17,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:20:17,884 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-12 11:20:18,181 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 11:20:18,574 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 58 [2020-10-12 11:20:18,837 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 48 [2020-10-12 11:20:19,137 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 61 [2020-10-12 11:20:19,831 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 165 [2020-10-12 11:20:20,555 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 173 [2020-10-12 11:20:21,517 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 172 [2020-10-12 11:20:22,419 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 132 [2020-10-12 11:20:23,668 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 171 [2020-10-12 11:20:25,771 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 170 [2020-10-12 11:20:28,603 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 169 [2020-10-12 11:20:29,520 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 167 [2020-10-12 11:20:31,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:31,363 INFO L93 Difference]: Finished difference Result 761 states and 1217 transitions. [2020-10-12 11:20:31,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 11:20:31,367 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 216 [2020-10-12 11:20:31,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:31,373 INFO L225 Difference]: With dead ends: 761 [2020-10-12 11:20:31,374 INFO L226 Difference]: Without dead ends: 518 [2020-10-12 11:20:31,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:20:31,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-10-12 11:20:31,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 512. [2020-10-12 11:20:31,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-10-12 11:20:31,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 680 transitions. [2020-10-12 11:20:31,412 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 680 transitions. Word has length 216 [2020-10-12 11:20:31,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:31,413 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 680 transitions. [2020-10-12 11:20:31,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:20:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 680 transitions. [2020-10-12 11:20:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-12 11:20:31,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:31,418 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:31,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:20:31,418 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:31,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:31,419 INFO L82 PathProgramCache]: Analyzing trace with hash -42498605, now seen corresponding path program 1 times [2020-10-12 11:20:31,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:31,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290057942] [2020-10-12 11:20:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:31,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:31,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:32,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:33,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:33,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-12 11:20:33,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:20:33,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2347 [2020-10-12 11:20:33,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:20:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:20:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-10-12 11:20:33,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:34,178 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:34,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:34,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:34,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:34,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:34,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:34,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:20:34,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:34,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:34,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:34,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:20:34,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:34,337 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:20:34,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:34,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:34,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:34,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:34,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:20:34,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:20:34,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-12 11:20:34,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:34,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:34,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:34,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:20:34,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:20:34,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290057942] [2020-10-12 11:20:34,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:34,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:20:34,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451158582] [2020-10-12 11:20:34,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:20:34,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:34,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:20:34,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:20:34,667 INFO L87 Difference]: Start difference. First operand 512 states and 680 transitions. Second operand 6 states. [2020-10-12 11:20:34,905 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:20:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:37,644 INFO L93 Difference]: Finished difference Result 994 states and 1476 transitions. [2020-10-12 11:20:37,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:20:37,645 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2020-10-12 11:20:37,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:37,651 INFO L225 Difference]: With dead ends: 994 [2020-10-12 11:20:37,651 INFO L226 Difference]: Without dead ends: 748 [2020-10-12 11:20:37,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:20:37,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-10-12 11:20:37,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 734. [2020-10-12 11:20:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-12 11:20:37,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1030 transitions. [2020-10-12 11:20:37,695 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1030 transitions. Word has length 226 [2020-10-12 11:20:37,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:37,696 INFO L479 AbstractCegarLoop]: Abstraction has 734 states and 1030 transitions. [2020-10-12 11:20:37,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:20:37,696 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1030 transitions. [2020-10-12 11:20:37,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-12 11:20:37,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:37,701 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:37,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:20:37,701 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:37,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:37,702 INFO L82 PathProgramCache]: Analyzing trace with hash 8045760, now seen corresponding path program 1 times [2020-10-12 11:20:37,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:37,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854500210] [2020-10-12 11:20:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:37,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:38,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:39,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:41,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:41,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-12 11:20:41,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:20:41,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4087 [2020-10-12 11:20:41,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:41,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:20:41,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:20:41,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:20:41,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:42,057 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:42,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:42,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:42,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:42,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:42,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:42,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:20:42,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:20:42,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:20:42,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:42,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:42,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:42,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:20:42,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:42,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 11:20:42,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:42,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:20:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:42,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:20:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:42,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:42,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:42,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:20:42,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:42,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:20:42,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:42,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:42,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:20:42,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:20:42,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854500210] [2020-10-12 11:20:42,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:42,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:20:42,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165782292] [2020-10-12 11:20:42,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:20:42,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:42,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:20:42,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:20:42,391 INFO L87 Difference]: Start difference. First operand 734 states and 1030 transitions. Second operand 8 states. [2020-10-12 11:20:42,553 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:20:45,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:45,699 INFO L93 Difference]: Finished difference Result 1697 states and 2588 transitions. [2020-10-12 11:20:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:20:45,700 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 235 [2020-10-12 11:20:45,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:45,711 INFO L225 Difference]: With dead ends: 1697 [2020-10-12 11:20:45,712 INFO L226 Difference]: Without dead ends: 1229 [2020-10-12 11:20:45,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:20:45,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-10-12 11:20:45,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1200. [2020-10-12 11:20:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2020-10-12 11:20:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1774 transitions. [2020-10-12 11:20:45,785 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1774 transitions. Word has length 235 [2020-10-12 11:20:45,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:45,787 INFO L479 AbstractCegarLoop]: Abstraction has 1200 states and 1774 transitions. [2020-10-12 11:20:45,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:20:45,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1774 transitions. [2020-10-12 11:20:45,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-12 11:20:45,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:45,792 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:45,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:20:45,796 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:45,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:45,797 INFO L82 PathProgramCache]: Analyzing trace with hash 692985892, now seen corresponding path program 1 times [2020-10-12 11:20:45,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:45,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913605719] [2020-10-12 11:20:45,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:45,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:46,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:47,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:47,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:48,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:48,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-12 11:20:48,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:20:48,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2646 [2020-10-12 11:20:48,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 11:20:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:20:48,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-12 11:20:48,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:49,213 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 34 [2020-10-12 11:20:49,361 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:49,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:49,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:49,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:49,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:49,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:49,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:20:49,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:49,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:20:49,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:49,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:20:49,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:49,506 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:20:49,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:49,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:49,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:49,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:20:49,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:49,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 11:20:49,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:49,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:20:49,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:49,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:20:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:49,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:49,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:49,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:49,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:20:49,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:20:49,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 11:20:49,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:49,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:20:49,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:20:50,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913605719] [2020-10-12 11:20:50,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:50,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:20:50,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285348018] [2020-10-12 11:20:50,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:20:50,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:50,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:20:50,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:20:50,216 INFO L87 Difference]: Start difference. First operand 1200 states and 1774 transitions. Second operand 8 states. [2020-10-12 11:20:50,497 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:20:50,875 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-12 11:20:51,970 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-12 11:20:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:56,922 INFO L93 Difference]: Finished difference Result 4186 states and 6892 transitions. [2020-10-12 11:20:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 11:20:56,923 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 237 [2020-10-12 11:20:56,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:56,942 INFO L225 Difference]: With dead ends: 4186 [2020-10-12 11:20:56,943 INFO L226 Difference]: Without dead ends: 2972 [2020-10-12 11:20:56,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:20:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2020-10-12 11:20:57,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2734. [2020-10-12 11:20:57,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2734 states. [2020-10-12 11:20:57,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 3597 transitions. [2020-10-12 11:20:57,073 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 3597 transitions. Word has length 237 [2020-10-12 11:20:57,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:57,073 INFO L479 AbstractCegarLoop]: Abstraction has 2734 states and 3597 transitions. [2020-10-12 11:20:57,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:20:57,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 3597 transitions. [2020-10-12 11:20:57,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 11:20:57,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:57,092 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:20:57,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:20:57,092 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:57,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:57,093 INFO L82 PathProgramCache]: Analyzing trace with hash 297312988, now seen corresponding path program 1 times [2020-10-12 11:20:57,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:57,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232621016] [2020-10-12 11:20:57,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:57,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:57,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:58,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:02,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:02,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 11:21:02,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:21:02,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 11:21:02,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:02,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:21:02,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:21:02,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-12 11:21:02,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:02,484 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:02,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:02,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:02,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:02,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:02,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:02,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:21:02,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:02,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:02,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:02,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:21:02,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:21:02,723 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:21:02,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:02,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:02,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:02,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:21:02,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:02,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 11:21:02,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:02,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:02,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:21:02,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:21:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:21:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:02,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:02,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:02,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:21:02,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:02,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 11:21:02,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:02,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:21:02,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:21:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 11:21:03,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232621016] [2020-10-12 11:21:03,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:03,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:21:03,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466523869] [2020-10-12 11:21:03,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:21:03,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:03,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:21:03,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:21:03,216 INFO L87 Difference]: Start difference. First operand 2734 states and 3597 transitions. Second operand 8 states. [2020-10-12 11:21:03,412 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:21:04,141 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:21:07,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:07,635 INFO L93 Difference]: Finished difference Result 8841 states and 12905 transitions. [2020-10-12 11:21:07,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:21:07,636 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 248 [2020-10-12 11:21:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:07,677 INFO L225 Difference]: With dead ends: 8841 [2020-10-12 11:21:07,677 INFO L226 Difference]: Without dead ends: 6373 [2020-10-12 11:21:07,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:21:07,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6373 states. [2020-10-12 11:21:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6373 to 6254. [2020-10-12 11:21:07,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6254 states. [2020-10-12 11:21:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6254 states to 6254 states and 8540 transitions. [2020-10-12 11:21:07,928 INFO L78 Accepts]: Start accepts. Automaton has 6254 states and 8540 transitions. Word has length 248 [2020-10-12 11:21:07,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:07,929 INFO L479 AbstractCegarLoop]: Abstraction has 6254 states and 8540 transitions. [2020-10-12 11:21:07,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:21:07,929 INFO L276 IsEmpty]: Start isEmpty. Operand 6254 states and 8540 transitions. [2020-10-12 11:21:07,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-12 11:21:07,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:07,967 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:21:07,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:21:07,967 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:07,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:07,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1410032888, now seen corresponding path program 1 times [2020-10-12 11:21:07,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:07,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033568895] [2020-10-12 11:21:07,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:08,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:08,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:10,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:12,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:12,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-12 11:21:12,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:21:12,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4961 [2020-10-12 11:21:12,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:21:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:21:12,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 11:21:12,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:13,186 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:13,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:13,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:13,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:13,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:13,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:13,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:21:13,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:13,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:21:13,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:13,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:13,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:13,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:13,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:21:13,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:13,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-12 11:21:13,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:21:13,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:13,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:21:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:13,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:13,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:13,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:21:13,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:13,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 11:21:13,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:21:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:21:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 11:21:13,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033568895] [2020-10-12 11:21:13,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:13,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:21:13,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285957749] [2020-10-12 11:21:13,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:21:13,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:13,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:21:13,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:21:13,658 INFO L87 Difference]: Start difference. First operand 6254 states and 8540 transitions. Second operand 8 states. [2020-10-12 11:21:13,811 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:21:14,451 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:21:14,882 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:21:18,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:18,453 INFO L93 Difference]: Finished difference Result 22956 states and 34197 transitions. [2020-10-12 11:21:18,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 11:21:18,454 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 254 [2020-10-12 11:21:18,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:18,558 INFO L225 Difference]: With dead ends: 22956 [2020-10-12 11:21:18,558 INFO L226 Difference]: Without dead ends: 16968 [2020-10-12 11:21:18,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:21:18,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16968 states. [2020-10-12 11:21:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16968 to 16713. [2020-10-12 11:21:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16713 states. [2020-10-12 11:21:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16713 states to 16713 states and 22968 transitions. [2020-10-12 11:21:19,148 INFO L78 Accepts]: Start accepts. Automaton has 16713 states and 22968 transitions. Word has length 254 [2020-10-12 11:21:19,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:19,149 INFO L479 AbstractCegarLoop]: Abstraction has 16713 states and 22968 transitions. [2020-10-12 11:21:19,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:21:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 16713 states and 22968 transitions. [2020-10-12 11:21:19,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-12 11:21:19,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:19,234 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:21:19,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:21:19,234 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:19,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:19,235 INFO L82 PathProgramCache]: Analyzing trace with hash 350736676, now seen corresponding path program 1 times [2020-10-12 11:21:19,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:19,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725773601] [2020-10-12 11:21:19,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:19,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:19,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:20,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:23,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:24,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:24,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-12 11:21:24,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:21:24,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 11:21:24,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 11:21:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-12 11:21:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-12 11:21:24,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:24,812 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 36 [2020-10-12 11:21:24,952 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:24,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:24,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:24,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:24,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:24,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:24,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:21:24,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:24,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:21:24,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:24,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:21:24,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:25,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:25,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:25,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:25,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:21:25,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:25,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:21:25,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:25,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:21:25,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:25,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:21:25,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:25,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:21:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:25,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:25,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:25,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 11:21:25,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:25,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 11:21:25,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:25,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:25,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:25,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 11:21:25,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:25,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 11:21:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:25,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:25,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:25,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:25,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:21:25,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:21:25,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 11:21:25,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:21:25,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 58 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 11:21:25,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725773601] [2020-10-12 11:21:25,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:25,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:21:25,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860605222] [2020-10-12 11:21:25,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:21:25,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:25,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:21:25,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:21:25,606 INFO L87 Difference]: Start difference. First operand 16713 states and 22968 transitions. Second operand 8 states. [2020-10-12 11:21:25,877 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:21:26,575 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 11:21:27,917 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 11:21:31,541 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2020-10-12 11:21:32,634 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-10-12 11:21:32,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:32,690 INFO L93 Difference]: Finished difference Result 34959 states and 49696 transitions. [2020-10-12 11:21:32,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 11:21:32,691 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 262 [2020-10-12 11:21:32,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:32,757 INFO L225 Difference]: With dead ends: 34959 [2020-10-12 11:21:32,757 INFO L226 Difference]: Without dead ends: 18160 [2020-10-12 11:21:32,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-12 11:21:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18160 states. [2020-10-12 11:21:33,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18160 to 17361. [2020-10-12 11:21:33,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17361 states. [2020-10-12 11:21:33,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17361 states to 17361 states and 23832 transitions. [2020-10-12 11:21:33,265 INFO L78 Accepts]: Start accepts. Automaton has 17361 states and 23832 transitions. Word has length 262 [2020-10-12 11:21:33,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:33,266 INFO L479 AbstractCegarLoop]: Abstraction has 17361 states and 23832 transitions. [2020-10-12 11:21:33,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:21:33,266 INFO L276 IsEmpty]: Start isEmpty. Operand 17361 states and 23832 transitions. [2020-10-12 11:21:33,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-12 11:21:33,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:33,352 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:21:33,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:21:33,353 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:33,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:33,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1091376599, now seen corresponding path program 1 times [2020-10-12 11:21:33,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:33,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802551140] [2020-10-12 11:21:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:33,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:33,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:37,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:38,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:38,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-12 11:21:38,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:21:38,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 11:21:38,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:21:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:21:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:21:38,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:38,594 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:38,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:38,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:38,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:38,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:38,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:38,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:21:38,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:38,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:38,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:38,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:21:38,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:38,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:38,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:38,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:38,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:21:38,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:38,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 11:21:38,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:38,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:38,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:38,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:21:38,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:38,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:21:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:38,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:38,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:38,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 11:21:38,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:38,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:21:38,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:38,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:21:38,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 11:21:38,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:21:38,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:38,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 11:21:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:38,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:38,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:38,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:21:38,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:38,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:21:38,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:21:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 11:21:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:21:38,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 58 proven. 25 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 11:21:38,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802551140] [2020-10-12 11:21:38,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:38,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:21:38,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753019692] [2020-10-12 11:21:38,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:21:38,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:38,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:21:38,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:21:38,913 INFO L87 Difference]: Start difference. First operand 17361 states and 23832 transitions. Second operand 7 states. [2020-10-12 11:21:39,074 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:21:40,764 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:21:42,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:42,189 INFO L93 Difference]: Finished difference Result 42824 states and 57583 transitions. [2020-10-12 11:21:42,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:21:42,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-12 11:21:42,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:42,275 INFO L225 Difference]: With dead ends: 42824 [2020-10-12 11:21:42,275 INFO L226 Difference]: Without dead ends: 25728 [2020-10-12 11:21:42,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:21:42,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25728 states. [2020-10-12 11:21:43,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25728 to 25482. [2020-10-12 11:21:43,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25482 states. [2020-10-12 11:21:43,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25482 states to 25482 states and 33604 transitions. [2020-10-12 11:21:43,783 INFO L78 Accepts]: Start accepts. Automaton has 25482 states and 33604 transitions. Word has length 272 [2020-10-12 11:21:43,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:43,784 INFO L479 AbstractCegarLoop]: Abstraction has 25482 states and 33604 transitions. [2020-10-12 11:21:43,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:21:43,784 INFO L276 IsEmpty]: Start isEmpty. Operand 25482 states and 33604 transitions. [2020-10-12 11:21:43,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-12 11:21:43,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:43,825 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:21:43,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:21:43,825 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:43,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:43,826 INFO L82 PathProgramCache]: Analyzing trace with hash -454204994, now seen corresponding path program 1 times [2020-10-12 11:21:43,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:43,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79711004] [2020-10-12 11:21:43,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:43,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:44,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:44,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:45,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:48,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:48,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-12 11:21:48,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:21:48,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 11:21:48,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:21:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:21:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 11:21:48,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:49,093 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:49,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:49,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:49,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:49,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:21:49,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:21:49,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:49,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:49,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:49,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:49,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:21:49,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:49,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:21:49,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:21:49,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:49,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:21:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:49,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:49,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:49,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:21:49,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:49,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 11:21:49,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:21:49,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:49,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:21:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:49,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:49,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:49,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:21:49,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:21:49,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 11:21:49,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:49,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:49,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:49,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:21:49,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:49,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 11:21:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:49,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:49,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:49,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:21:49,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:49,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 11:21:49,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:49,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:21:49,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 70 proven. 30 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-12 11:21:49,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79711004] [2020-10-12 11:21:49,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:49,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:21:49,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786508748] [2020-10-12 11:21:49,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:21:49,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:49,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:21:49,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:21:49,682 INFO L87 Difference]: Start difference. First operand 25482 states and 33604 transitions. Second operand 8 states. [2020-10-12 11:21:49,837 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:21:51,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:51,660 INFO L93 Difference]: Finished difference Result 49670 states and 65954 transitions. [2020-10-12 11:21:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:21:51,660 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 284 [2020-10-12 11:21:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:51,746 INFO L225 Difference]: With dead ends: 49670 [2020-10-12 11:21:51,747 INFO L226 Difference]: Without dead ends: 24453 [2020-10-12 11:21:51,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:21:51,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24453 states. [2020-10-12 11:21:52,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24453 to 24433. [2020-10-12 11:21:52,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24433 states. [2020-10-12 11:21:52,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24433 states to 24433 states and 31849 transitions. [2020-10-12 11:21:52,233 INFO L78 Accepts]: Start accepts. Automaton has 24433 states and 31849 transitions. Word has length 284 [2020-10-12 11:21:52,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:52,234 INFO L479 AbstractCegarLoop]: Abstraction has 24433 states and 31849 transitions. [2020-10-12 11:21:52,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:21:52,234 INFO L276 IsEmpty]: Start isEmpty. Operand 24433 states and 31849 transitions. [2020-10-12 11:21:52,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-12 11:21:52,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:52,270 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:21:52,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:21:52,270 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:52,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:52,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1901439360, now seen corresponding path program 1 times [2020-10-12 11:21:52,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:52,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626892152] [2020-10-12 11:21:52,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:52,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:54,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:55,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:57,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:57,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-12 11:21:57,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:21:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 11:21:57,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:21:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:21:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:21:57,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:57,509 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:57,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:57,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:57,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:57,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:57,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:21:57,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:21:57,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:57,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:57,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:57,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:57,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:21:57,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:57,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:21:57,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:57,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:57,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:57,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:21:57,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:57,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:21:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:57,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:57,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:57,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:21:57,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:57,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 11:21:57,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:21:57,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:57,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:21:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:57,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:57,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:57,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:21:57,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:57,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 11:21:57,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:57,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:21:57,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 11:21:57,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:21:57,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 84 proven. 39 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:21:58,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626892152] [2020-10-12 11:21:58,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:58,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:21:58,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552736844] [2020-10-12 11:21:58,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:21:58,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:58,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:21:58,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:21:58,069 INFO L87 Difference]: Start difference. First operand 24433 states and 31849 transitions. Second operand 8 states. [2020-10-12 11:21:58,233 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:21:59,640 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:22:02,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:22:02,157 INFO L93 Difference]: Finished difference Result 68747 states and 95344 transitions. [2020-10-12 11:22:02,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:22:02,158 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 293 [2020-10-12 11:22:02,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:22:02,339 INFO L225 Difference]: With dead ends: 68747 [2020-10-12 11:22:02,340 INFO L226 Difference]: Without dead ends: 44579 [2020-10-12 11:22:02,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:22:02,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44579 states. [2020-10-12 11:22:03,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44579 to 43331. [2020-10-12 11:22:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43331 states. [2020-10-12 11:22:03,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43331 states to 43331 states and 56696 transitions. [2020-10-12 11:22:03,674 INFO L78 Accepts]: Start accepts. Automaton has 43331 states and 56696 transitions. Word has length 293 [2020-10-12 11:22:03,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:22:03,675 INFO L479 AbstractCegarLoop]: Abstraction has 43331 states and 56696 transitions. [2020-10-12 11:22:03,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:22:03,675 INFO L276 IsEmpty]: Start isEmpty. Operand 43331 states and 56696 transitions. [2020-10-12 11:22:03,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-12 11:22:03,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:22:03,717 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:22:03,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:22:03,718 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:22:03,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:22:03,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1332609295, now seen corresponding path program 1 times [2020-10-12 11:22:03,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:22:03,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131128952] [2020-10-12 11:22:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:22:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:03,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:03,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:04,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:05,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:06,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:08,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:08,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-12 11:22:08,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:22:08,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 11:22:08,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:08,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:22:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:22:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 11:22:08,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:09,053 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:22:09,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:22:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:09,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:09,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:09,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:22:09,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:09,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:22:09,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:22:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:22:09,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:22:09,188 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:22:09,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:22:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:09,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:09,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:09,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:22:09,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 11:22:09,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:22:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:22:09,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:22:09,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:22:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:09,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:09,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:09,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:22:09,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:09,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-12 11:22:09,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 11:22:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:22:09,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 11:22:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:09,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:09,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:09,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:22:09,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:09,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 11:22:09,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:09,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:22:09,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 151 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 11:22:09,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131128952] [2020-10-12 11:22:09,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:22:09,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:22:09,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053366700] [2020-10-12 11:22:09,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:22:09,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:22:09,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:22:09,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:22:09,852 INFO L87 Difference]: Start difference. First operand 43331 states and 56696 transitions. Second operand 8 states. [2020-10-12 11:22:10,131 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:22:10,440 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:22:15,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:22:15,007 INFO L93 Difference]: Finished difference Result 98784 states and 132102 transitions. [2020-10-12 11:22:15,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:22:15,007 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 329 [2020-10-12 11:22:15,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:22:15,193 INFO L225 Difference]: With dead ends: 98784 [2020-10-12 11:22:15,193 INFO L226 Difference]: Without dead ends: 55718 [2020-10-12 11:22:15,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:22:15,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55718 states. [2020-10-12 11:22:16,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55718 to 55415. [2020-10-12 11:22:16,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55415 states. [2020-10-12 11:22:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55415 states to 55415 states and 72425 transitions. [2020-10-12 11:22:16,204 INFO L78 Accepts]: Start accepts. Automaton has 55415 states and 72425 transitions. Word has length 329 [2020-10-12 11:22:16,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:22:16,205 INFO L479 AbstractCegarLoop]: Abstraction has 55415 states and 72425 transitions. [2020-10-12 11:22:16,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:22:16,205 INFO L276 IsEmpty]: Start isEmpty. Operand 55415 states and 72425 transitions. [2020-10-12 11:22:16,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-12 11:22:16,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:22:16,265 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:22:16,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:22:16,266 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:22:16,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:22:16,266 INFO L82 PathProgramCache]: Analyzing trace with hash 520293508, now seen corresponding path program 1 times [2020-10-12 11:22:16,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:22:16,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403714814] [2020-10-12 11:22:16,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:22:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:16,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:16,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:16,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:17,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:21,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:21,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-12 11:22:21,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:22:21,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-12 11:22:21,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:21,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:22:21,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 11:22:21,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 11:22:21,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:21,569 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:22:21,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:22:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:21,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:21,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:21,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:22:21,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:21,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:22:21,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:21,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:22:21,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:21,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:22:21,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:21,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:22:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:21,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:21,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:21,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:22:21,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:21,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:22:21,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:21,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:22:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:22:21,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:21,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:22:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:21,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:21,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:21,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:22:21,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:21,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 11:22:21,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:22:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:21,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 11:22:21,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:21,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 11:22:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:21,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:21,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:21,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 11:22:21,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:21,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 11:22:21,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:21,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:21,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:21,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 11:22:21,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:21,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 11:22:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:21,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:21,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:21,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 11:22:21,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:21,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 11:22:21,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:21,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:21,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 11:22:21,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 263 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 11:22:22,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403714814] [2020-10-12 11:22:22,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:22:22,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:22:22,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219873430] [2020-10-12 11:22:22,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:22:22,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:22:22,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:22:22,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:22:22,117 INFO L87 Difference]: Start difference. First operand 55415 states and 72425 transitions. Second operand 8 states. [2020-10-12 11:22:22,440 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:22:23,336 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:22:25,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:22:25,879 INFO L93 Difference]: Finished difference Result 135411 states and 182282 transitions. [2020-10-12 11:22:25,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:22:25,880 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 365 [2020-10-12 11:22:25,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:22:26,161 INFO L225 Difference]: With dead ends: 135411 [2020-10-12 11:22:26,161 INFO L226 Difference]: Without dead ends: 80683 [2020-10-12 11:22:26,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:22:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80683 states. [2020-10-12 11:22:27,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80683 to 79871. [2020-10-12 11:22:27,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79871 states. [2020-10-12 11:22:27,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79871 states to 79871 states and 100663 transitions. [2020-10-12 11:22:27,965 INFO L78 Accepts]: Start accepts. Automaton has 79871 states and 100663 transitions. Word has length 365 [2020-10-12 11:22:27,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:22:27,965 INFO L479 AbstractCegarLoop]: Abstraction has 79871 states and 100663 transitions. [2020-10-12 11:22:27,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:22:27,966 INFO L276 IsEmpty]: Start isEmpty. Operand 79871 states and 100663 transitions. [2020-10-12 11:22:28,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-12 11:22:28,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:22:28,071 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:22:28,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:22:28,071 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:22:28,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:22:28,072 INFO L82 PathProgramCache]: Analyzing trace with hash 2029203231, now seen corresponding path program 1 times [2020-10-12 11:22:28,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:22:28,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094519494] [2020-10-12 11:22:28,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:22:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:28,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:28,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:32,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:33,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:33,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-12 11:22:33,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:22:33,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 11:22:33,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-12 11:22:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-12 11:22:33,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:33,445 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:22:33,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:22:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:33,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:33,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:33,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:22:33,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:33,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:22:33,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:33,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:22:33,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:33,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:22:33,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:33,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:22:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:33,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:33,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:33,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:22:33,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:33,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:22:33,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:33,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:22:33,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:33,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:22:33,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:33,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:22:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:33,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:33,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:33,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:22:33,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:33,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:22:33,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:33,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:22:33,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:33,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:22:33,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:33,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 11:22:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:33,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:33,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:33,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 11:22:33,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:33,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 11:22:33,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:22:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 11:22:33,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 155 proven. 3 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-12 11:22:33,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094519494] [2020-10-12 11:22:33,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:22:33,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:22:33,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108256676] [2020-10-12 11:22:33,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:22:33,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:22:33,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:22:33,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:22:33,846 INFO L87 Difference]: Start difference. First operand 79871 states and 100663 transitions. Second operand 6 states. [2020-10-12 11:22:34,003 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:22:35,165 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:22:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:22:38,379 INFO L93 Difference]: Finished difference Result 221438 states and 283732 transitions. [2020-10-12 11:22:38,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:22:38,380 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 366 [2020-10-12 11:22:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:22:38,776 INFO L225 Difference]: With dead ends: 221438 [2020-10-12 11:22:38,776 INFO L226 Difference]: Without dead ends: 147370 [2020-10-12 11:22:38,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:22:39,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147370 states. [2020-10-12 11:22:44,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147370 to 139576. [2020-10-12 11:22:44,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139576 states. [2020-10-12 11:22:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139576 states to 139576 states and 179551 transitions. [2020-10-12 11:22:44,490 INFO L78 Accepts]: Start accepts. Automaton has 139576 states and 179551 transitions. Word has length 366 [2020-10-12 11:22:44,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:22:44,490 INFO L479 AbstractCegarLoop]: Abstraction has 139576 states and 179551 transitions. [2020-10-12 11:22:44,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:22:44,490 INFO L276 IsEmpty]: Start isEmpty. Operand 139576 states and 179551 transitions. [2020-10-12 11:22:44,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-12 11:22:44,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:22:44,622 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:22:44,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 11:22:44,622 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:22:44,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:22:44,623 INFO L82 PathProgramCache]: Analyzing trace with hash -997157642, now seen corresponding path program 1 times [2020-10-12 11:22:44,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:22:44,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111800943] [2020-10-12 11:22:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:22:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:44,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:44,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:45,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:45,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:48,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:49,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:49,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-12 11:22:49,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:22:49,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-12 11:22:49,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:49,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 11:22:49,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:22:49,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-12 11:22:49,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:50,019 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:22:50,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:22:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:50,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:50,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:50,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:22:50,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:22:50,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:22:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:22:50,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:50,171 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:22:50,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:22:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:50,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:50,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:50,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:22:50,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:50,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 11:22:50,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:50,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:22:50,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:22:50,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:22:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:50,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:50,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:50,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 11:22:50,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:50,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 541 [2020-10-12 11:22:50,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:50,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:22:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:50,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-12 11:22:50,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:22:50,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-12 11:22:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:51,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:51,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:51,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 11:22:51,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 11:22:51,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 11:22:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:51,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-12 11:22:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:51,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:51,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:51,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 11:22:51,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:51,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 11:22:51,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:51,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:51,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 11:22:51,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 237 proven. 25 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 11:22:51,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111800943] [2020-10-12 11:22:51,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:22:51,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 11:22:51,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166702573] [2020-10-12 11:22:51,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 11:22:51,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:22:51,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 11:22:51,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:22:51,563 INFO L87 Difference]: Start difference. First operand 139576 states and 179551 transitions. Second operand 11 states. [2020-10-12 11:22:51,731 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:22:52,142 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2020-10-12 11:22:52,465 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:22:57,074 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:22:59,285 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:23:01,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:23:01,284 INFO L93 Difference]: Finished difference Result 405232 states and 537142 transitions. [2020-10-12 11:23:01,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 11:23:01,284 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 395 [2020-10-12 11:23:01,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:23:02,227 INFO L225 Difference]: With dead ends: 405232 [2020-10-12 11:23:02,228 INFO L226 Difference]: Without dead ends: 266550 [2020-10-12 11:23:06,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:23:06,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266550 states. [2020-10-12 11:23:10,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266550 to 261964. [2020-10-12 11:23:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261964 states. [2020-10-12 11:23:10,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261964 states to 261964 states and 337258 transitions. [2020-10-12 11:23:10,856 INFO L78 Accepts]: Start accepts. Automaton has 261964 states and 337258 transitions. Word has length 395 [2020-10-12 11:23:10,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:23:10,856 INFO L479 AbstractCegarLoop]: Abstraction has 261964 states and 337258 transitions. [2020-10-12 11:23:10,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 11:23:10,856 INFO L276 IsEmpty]: Start isEmpty. Operand 261964 states and 337258 transitions. [2020-10-12 11:23:11,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-12 11:23:11,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:23:11,035 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:23:11,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 11:23:11,035 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:23:11,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:23:11,036 INFO L82 PathProgramCache]: Analyzing trace with hash -855000141, now seen corresponding path program 1 times [2020-10-12 11:23:11,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:23:11,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497745351] [2020-10-12 11:23:11,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:23:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:11,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:11,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:11,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:11,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:12,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking...