/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/Problem11_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:10:40,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:10:40,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:10:40,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:10:40,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:10:40,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:10:40,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:10:40,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:10:40,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:10:40,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:10:40,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:10:40,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:10:40,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:10:40,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:10:40,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:10:40,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:10:40,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:10:40,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:10:40,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:10:40,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:10:40,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:10:40,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:10:40,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:10:40,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:10:40,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:10:40,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:10:40,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:10:40,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:10:40,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:10:40,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:10:40,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:10:40,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:10:40,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:10:40,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:10:40,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:10:40,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:10:40,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:10:40,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:10:40,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:10:40,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:10:40,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:10:40,062 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 13:10:40,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:10:40,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:10:40,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:10:40,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:10:40,104 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:10:40,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:10:40,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:10:40,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:10:40,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:10:40,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:10:40,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:10:40,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:10:40,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:10:40,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:10:40,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:10:40,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:10:40,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:10:40,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:10:40,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:10:40,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:10:40,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:10:40,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:10:40,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:10:40,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:10:40,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:10:40,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:10:40,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:10:40,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:10:40,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:10:40,112 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 13:10:40,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:10:40,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:10:40,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:10:40,414 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:10:40,414 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:10:40,415 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label25.c [2020-10-12 13:10:40,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e5f65f3c/bcd48b8c87ce4be0bc50013a6ba6d8fa/FLAG55aa877b4 [2020-10-12 13:10:41,063 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:10:41,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label25.c [2020-10-12 13:10:41,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e5f65f3c/bcd48b8c87ce4be0bc50013a6ba6d8fa/FLAG55aa877b4 [2020-10-12 13:10:41,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e5f65f3c/bcd48b8c87ce4be0bc50013a6ba6d8fa [2020-10-12 13:10:41,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:10:41,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:10:41,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:10:41,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:10:41,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:10:41,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:10:41" (1/1) ... [2020-10-12 13:10:41,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d96e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:10:41, skipping insertion in model container [2020-10-12 13:10:41,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:10:41" (1/1) ... [2020-10-12 13:10:41,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:10:41,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:10:42,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:10:42,129 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:10:42,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:10:42,421 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:10:42,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:10:42 WrapperNode [2020-10-12 13:10:42,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:10:42,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:10:42,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:10:42,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:10:42,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:10:42" (1/1) ... [2020-10-12 13:10:42,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:10:42" (1/1) ... [2020-10-12 13:10:42,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:10:42" (1/1) ... [2020-10-12 13:10:42,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:10:42" (1/1) ... [2020-10-12 13:10:42,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:10:42" (1/1) ... [2020-10-12 13:10:42,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:10:42" (1/1) ... [2020-10-12 13:10:42,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:10:42" (1/1) ... [2020-10-12 13:10:42,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:10:42,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:10:42,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:10:42,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:10:42,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:10:42" (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 13:10:42,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:10:42,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:10:42,716 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:10:42,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:10:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:10:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:10:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:10:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:10:42,718 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:10:42,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:10:42,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:10:44,238 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:10:44,239 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:10:44,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:10:44 BoogieIcfgContainer [2020-10-12 13:10:44,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:10:44,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:10:44,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:10:44,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:10:44,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:10:41" (1/3) ... [2020-10-12 13:10:44,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cab44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:10:44, skipping insertion in model container [2020-10-12 13:10:44,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:10:42" (2/3) ... [2020-10-12 13:10:44,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cab44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:10:44, skipping insertion in model container [2020-10-12 13:10:44,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:10:44" (3/3) ... [2020-10-12 13:10:44,253 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label25.c [2020-10-12 13:10:44,264 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:10:44,272 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:10:44,285 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:10:44,311 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:10:44,311 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:10:44,312 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:10:44,312 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:10:44,312 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:10:44,312 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:10:44,313 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:10:44,313 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:10:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-12 13:10:44,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 13:10:44,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:44,347 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] [2020-10-12 13:10:44,348 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:44,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:44,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1539824594, now seen corresponding path program 1 times [2020-10-12 13:10:44,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:44,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073822552] [2020-10-12 13:10:44,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:44,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:44,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:44,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 13:10:44,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:44,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-12 13:10:44,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:44,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:10:44,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:10:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 13:10:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 13:10:45,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:45,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:45,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:45,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:45,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:10:45,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:10:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:45,152 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 13:10:45,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073822552] [2020-10-12 13:10:45,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:10:45,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:10:45,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216594254] [2020-10-12 13:10:45,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:10:45,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:45,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:10:45,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:10:45,177 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-12 13:10:47,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:47,552 INFO L93 Difference]: Finished difference Result 791 states and 1386 transitions. [2020-10-12 13:10:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:10:47,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-12 13:10:47,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:47,584 INFO L225 Difference]: With dead ends: 791 [2020-10-12 13:10:47,585 INFO L226 Difference]: Without dead ends: 434 [2020-10-12 13:10:47,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:10:47,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-12 13:10:47,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2020-10-12 13:10:47,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-12 13:10:47,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 618 transitions. [2020-10-12 13:10:47,679 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 618 transitions. Word has length 37 [2020-10-12 13:10:47,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:47,680 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 618 transitions. [2020-10-12 13:10:47,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:10:47,680 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 618 transitions. [2020-10-12 13:10:47,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 13:10:47,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:47,686 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:47,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:10:47,686 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:47,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:47,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1804759410, now seen corresponding path program 1 times [2020-10-12 13:10:47,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:47,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074778026] [2020-10-12 13:10:47,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:47,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:47,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:48,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:48,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:48,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 13:10:48,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:10:48,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1144 [2020-10-12 13:10:48,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:10:48,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:10:48,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:10:48,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:10:48,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:48,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:48,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:48,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:48,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:48,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:10:48,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:48,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:48,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:48,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:10:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:49,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:49,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:49,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:10:49,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:49,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 13:10:49,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:49,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:10:49,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:10:49,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074778026] [2020-10-12 13:10:49,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:10:49,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 13:10:49,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146515872] [2020-10-12 13:10:49,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:10:49,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:49,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:10:49,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:10:49,218 INFO L87 Difference]: Start difference. First operand 430 states and 618 transitions. Second operand 8 states. [2020-10-12 13:10:52,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:52,369 INFO L93 Difference]: Finished difference Result 1664 states and 2471 transitions. [2020-10-12 13:10:52,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:10:52,370 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-10-12 13:10:52,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:52,379 INFO L225 Difference]: With dead ends: 1664 [2020-10-12 13:10:52,379 INFO L226 Difference]: Without dead ends: 1240 [2020-10-12 13:10:52,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:10:52,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2020-10-12 13:10:52,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1208. [2020-10-12 13:10:52,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2020-10-12 13:10:52,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1690 transitions. [2020-10-12 13:10:52,455 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1690 transitions. Word has length 109 [2020-10-12 13:10:52,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:52,455 INFO L479 AbstractCegarLoop]: Abstraction has 1208 states and 1690 transitions. [2020-10-12 13:10:52,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:10:52,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1690 transitions. [2020-10-12 13:10:52,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 13:10:52,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:52,460 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:52,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:10:52,461 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:52,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:52,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1442270559, now seen corresponding path program 1 times [2020-10-12 13:10:52,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:52,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636450949] [2020-10-12 13:10:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:52,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:53,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:53,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 13:10:53,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:53,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-10-12 13:10:53,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:53,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:10:53,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:10:53,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:10:53,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:53,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:53,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:53,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:53,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:53,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:53,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:10:53,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:10:53,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:53,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:53,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:53,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:53,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:10:53,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:53,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 13:10:53,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:53,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:53,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:53,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:10:53,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:53,953 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:10:53,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636450949] [2020-10-12 13:10:53,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:10:53,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:10:53,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396234546] [2020-10-12 13:10:53,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:10:53,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:53,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:10:53,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:10:53,956 INFO L87 Difference]: Start difference. First operand 1208 states and 1690 transitions. Second operand 7 states. [2020-10-12 13:10:56,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:56,354 INFO L93 Difference]: Finished difference Result 3031 states and 4208 transitions. [2020-10-12 13:10:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:10:56,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-12 13:10:56,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:56,372 INFO L225 Difference]: With dead ends: 3031 [2020-10-12 13:10:56,372 INFO L226 Difference]: Without dead ends: 1829 [2020-10-12 13:10:56,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:10:56,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2020-10-12 13:10:56,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1806. [2020-10-12 13:10:56,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1806 states. [2020-10-12 13:10:56,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2357 transitions. [2020-10-12 13:10:56,459 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2357 transitions. Word has length 110 [2020-10-12 13:10:56,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:56,461 INFO L479 AbstractCegarLoop]: Abstraction has 1806 states and 2357 transitions. [2020-10-12 13:10:56,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:10:56,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2357 transitions. [2020-10-12 13:10:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 13:10:56,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:56,470 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:56,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:10:56,471 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:56,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:56,472 INFO L82 PathProgramCache]: Analyzing trace with hash -4642230, now seen corresponding path program 1 times [2020-10-12 13:10:56,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:56,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671997849] [2020-10-12 13:10:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:56,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:56,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:56,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 13:10:56,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:56,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-12 13:10:56,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:10:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 13:10:56,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:57,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:57,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:57,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:57,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:57,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:57,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:10:57,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:57,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:57,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:57,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:57,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:57,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:57,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:57,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:57,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:10:57,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 13:10:57,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:10:57,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:10:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:10:57,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671997849] [2020-10-12 13:10:57,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:57,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:10:57,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679580735] [2020-10-12 13:10:57,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:10:57,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:57,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:10:57,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:10:57,332 INFO L87 Difference]: Start difference. First operand 1806 states and 2357 transitions. Second operand 5 states. [2020-10-12 13:10:59,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:59,332 INFO L93 Difference]: Finished difference Result 4007 states and 5338 transitions. [2020-10-12 13:10:59,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:10:59,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-12 13:10:59,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:59,345 INFO L225 Difference]: With dead ends: 4007 [2020-10-12 13:10:59,345 INFO L226 Difference]: Without dead ends: 2395 [2020-10-12 13:10:59,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:10:59,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2020-10-12 13:10:59,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2189. [2020-10-12 13:10:59,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2189 states. [2020-10-12 13:10:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 2828 transitions. [2020-10-12 13:10:59,410 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 2828 transitions. Word has length 168 [2020-10-12 13:10:59,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:59,411 INFO L479 AbstractCegarLoop]: Abstraction has 2189 states and 2828 transitions. [2020-10-12 13:10:59,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:10:59,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 2828 transitions. [2020-10-12 13:10:59,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-12 13:10:59,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:59,416 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:10:59,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:10:59,416 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:59,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:59,417 INFO L82 PathProgramCache]: Analyzing trace with hash -959045413, now seen corresponding path program 1 times [2020-10-12 13:10:59,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:59,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288446519] [2020-10-12 13:10:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:59,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:59,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:00,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:01,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:01,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-12 13:11:01,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:11:01,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2344 [2020-10-12 13:11:01,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:11:01,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:11:01,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-12 13:11:01,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:01,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:01,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:01,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:01,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:01,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:01,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:11:01,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:11:01,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:01,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:02,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:02,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:02,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:11:02,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:02,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 13:11:02,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:02,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:02,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:02,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:11:02,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:02,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:11:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:02,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:02,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:02,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:11:02,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:02,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-12 13:11:02,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:02,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:11:02,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:02,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:11:02,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 46 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 13:11:02,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288446519] [2020-10-12 13:11:02,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:02,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:11:02,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834753013] [2020-10-12 13:11:02,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:11:02,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:02,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:11:02,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:11:02,642 INFO L87 Difference]: Start difference. First operand 2189 states and 2828 transitions. Second operand 8 states. [2020-10-12 13:11:07,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:07,396 INFO L93 Difference]: Finished difference Result 5206 states and 6734 transitions. [2020-10-12 13:11:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:11:07,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2020-10-12 13:11:07,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:07,412 INFO L225 Difference]: With dead ends: 5206 [2020-10-12 13:11:07,413 INFO L226 Difference]: Without dead ends: 3199 [2020-10-12 13:11:07,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:11:07,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-10-12 13:11:07,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3167. [2020-10-12 13:11:07,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3167 states. [2020-10-12 13:11:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 4018 transitions. [2020-10-12 13:11:07,501 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 4018 transitions. Word has length 226 [2020-10-12 13:11:07,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:07,501 INFO L479 AbstractCegarLoop]: Abstraction has 3167 states and 4018 transitions. [2020-10-12 13:11:07,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:11:07,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 4018 transitions. [2020-10-12 13:11:07,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-12 13:11:07,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:07,506 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:11:07,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:11:07,506 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:07,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:07,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1386082140, now seen corresponding path program 1 times [2020-10-12 13:11:07,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:07,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536199355] [2020-10-12 13:11:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:07,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:07,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:08,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:09,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:09,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-12 13:11:09,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:11:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1814 [2020-10-12 13:11:09,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-12 13:11:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 13:11:09,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:09,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:09,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:09,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:09,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:09,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:09,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:11:09,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:09,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:09,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:09,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:09,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:09,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:09,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:09,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:09,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:11:09,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:09,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 13:11:09,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:09,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:09,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:09,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:09,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:09,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:11:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:09,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:09,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:09,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 13:11:09,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:09,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 13:11:09,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:09,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:09,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 13:11:09,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-12 13:11:09,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536199355] [2020-10-12 13:11:09,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:09,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:11:09,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332730860] [2020-10-12 13:11:09,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:11:09,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:09,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:11:09,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:11:09,738 INFO L87 Difference]: Start difference. First operand 3167 states and 4018 transitions. Second operand 5 states. [2020-10-12 13:11:11,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:11,586 INFO L93 Difference]: Finished difference Result 5187 states and 6702 transitions. [2020-10-12 13:11:11,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:11:11,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-10-12 13:11:11,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:11,607 INFO L225 Difference]: With dead ends: 5187 [2020-10-12 13:11:11,607 INFO L226 Difference]: Without dead ends: 3173 [2020-10-12 13:11:11,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:11:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2020-10-12 13:11:11,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 3167. [2020-10-12 13:11:11,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3167 states. [2020-10-12 13:11:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 4006 transitions. [2020-10-12 13:11:11,689 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 4006 transitions. Word has length 227 [2020-10-12 13:11:11,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:11,689 INFO L479 AbstractCegarLoop]: Abstraction has 3167 states and 4006 transitions. [2020-10-12 13:11:11,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:11:11,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 4006 transitions. [2020-10-12 13:11:11,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-12 13:11:11,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:11,694 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:11:11,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:11:11,694 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:11,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:11,695 INFO L82 PathProgramCache]: Analyzing trace with hash -694812592, now seen corresponding path program 1 times [2020-10-12 13:11:11,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:11,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899821199] [2020-10-12 13:11:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:11,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:12,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:12,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:12,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-12 13:11:12,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:11:12,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 739 [2020-10-12 13:11:12,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-12 13:11:12,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 13:11:12,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:12,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:12,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:12,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:12,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:12,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:12,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:11:12,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:12,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:12,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:12,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:12,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:12,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:12,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:12,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:12,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:11:12,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:12,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 13:11:12,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:12,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:12,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:11:12,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:11:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:12,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:12,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:12,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 13:11:12,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:12,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 13:11:12,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:11:12,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 13:11:12,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899821199] [2020-10-12 13:11:12,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:12,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:11:12,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091951765] [2020-10-12 13:11:12,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:11:12,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:12,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:11:12,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:11:12,830 INFO L87 Difference]: Start difference. First operand 3167 states and 4006 transitions. Second operand 5 states. [2020-10-12 13:11:15,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:15,200 INFO L93 Difference]: Finished difference Result 6159 states and 7851 transitions. [2020-10-12 13:11:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:11:15,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-10-12 13:11:15,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:15,215 INFO L225 Difference]: With dead ends: 6159 [2020-10-12 13:11:15,215 INFO L226 Difference]: Without dead ends: 3376 [2020-10-12 13:11:15,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:11:15,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2020-10-12 13:11:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3167. [2020-10-12 13:11:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3167 states. [2020-10-12 13:11:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 3909 transitions. [2020-10-12 13:11:15,289 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 3909 transitions. Word has length 237 [2020-10-12 13:11:15,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:15,290 INFO L479 AbstractCegarLoop]: Abstraction has 3167 states and 3909 transitions. [2020-10-12 13:11:15,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:11:15,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 3909 transitions. [2020-10-12 13:11:15,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-12 13:11:15,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:15,294 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:11:15,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:11:15,295 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:15,295 INFO L82 PathProgramCache]: Analyzing trace with hash -429311007, now seen corresponding path program 1 times [2020-10-12 13:11:15,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:15,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964541585] [2020-10-12 13:11:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:15,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:15,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:16,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:17,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:17,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-12 13:11:17,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:11:17,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1735 [2020-10-12 13:11:17,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:17,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:11:17,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:11:17,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:17,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:17,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:17,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:17,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:17,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:17,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:11:17,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:17,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:17,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:11:17,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:17,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:17,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:17,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:11:17,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:17,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 13:11:17,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:17,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:17,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:17,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:11:17,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:11:17,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:11:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:17,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:17,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:17,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 13:11:17,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:17,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 13:11:17,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:11:17,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:11:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:11:17,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964541585] [2020-10-12 13:11:17,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:17,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:11:17,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378114928] [2020-10-12 13:11:17,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:11:17,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:17,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:11:17,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:11:17,732 INFO L87 Difference]: Start difference. First operand 3167 states and 3909 transitions. Second operand 7 states. [2020-10-12 13:11:21,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:21,299 INFO L93 Difference]: Finished difference Result 7813 states and 10373 transitions. [2020-10-12 13:11:21,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:11:21,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-12 13:11:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:21,325 INFO L225 Difference]: With dead ends: 7813 [2020-10-12 13:11:21,325 INFO L226 Difference]: Without dead ends: 5030 [2020-10-12 13:11:21,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:11:21,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5030 states. [2020-10-12 13:11:21,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5030 to 4968. [2020-10-12 13:11:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4968 states. [2020-10-12 13:11:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4968 states to 4968 states and 6122 transitions. [2020-10-12 13:11:21,465 INFO L78 Accepts]: Start accepts. Automaton has 4968 states and 6122 transitions. Word has length 237 [2020-10-12 13:11:21,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:21,466 INFO L479 AbstractCegarLoop]: Abstraction has 4968 states and 6122 transitions. [2020-10-12 13:11:21,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:11:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand 4968 states and 6122 transitions. [2020-10-12 13:11:21,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-12 13:11:21,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:21,473 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:11:21,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:11:21,474 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:21,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:21,474 INFO L82 PathProgramCache]: Analyzing trace with hash -378943164, now seen corresponding path program 1 times [2020-10-12 13:11:21,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:21,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898304704] [2020-10-12 13:11:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:21,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:21,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:22,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:22,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-12 13:11:22,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:11:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1203 [2020-10-12 13:11:22,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:11:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:11:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-12 13:11:22,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:22,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:22,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:22,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:22,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:22,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:22,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:11:22,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:11:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:22,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:22,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:23,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:23,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:11:23,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:23,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 13:11:23,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:11:23,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:11:23,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:11:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:23,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:23,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:23,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:11:23,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:23,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 13:11:23,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:11:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:11:23,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 87 proven. 63 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:11:23,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898304704] [2020-10-12 13:11:23,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:23,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:11:23,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861180714] [2020-10-12 13:11:23,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:11:23,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:23,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:11:23,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:11:23,712 INFO L87 Difference]: Start difference. First operand 4968 states and 6122 transitions. Second operand 9 states. [2020-10-12 13:11:27,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:27,419 INFO L93 Difference]: Finished difference Result 9841 states and 12618 transitions. [2020-10-12 13:11:27,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:11:27,420 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 247 [2020-10-12 13:11:27,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:27,454 INFO L225 Difference]: With dead ends: 9841 [2020-10-12 13:11:27,455 INFO L226 Difference]: Without dead ends: 6423 [2020-10-12 13:11:27,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:11:27,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6423 states. [2020-10-12 13:11:27,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6423 to 6389. [2020-10-12 13:11:27,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6389 states. [2020-10-12 13:11:27,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6389 states to 6389 states and 7910 transitions. [2020-10-12 13:11:27,612 INFO L78 Accepts]: Start accepts. Automaton has 6389 states and 7910 transitions. Word has length 247 [2020-10-12 13:11:27,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:27,613 INFO L479 AbstractCegarLoop]: Abstraction has 6389 states and 7910 transitions. [2020-10-12 13:11:27,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:11:27,613 INFO L276 IsEmpty]: Start isEmpty. Operand 6389 states and 7910 transitions. [2020-10-12 13:11:27,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-12 13:11:27,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:27,625 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:11:27,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:11:27,626 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:27,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:27,628 INFO L82 PathProgramCache]: Analyzing trace with hash -2069786643, now seen corresponding path program 1 times [2020-10-12 13:11:27,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:27,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769616186] [2020-10-12 13:11:27,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:27,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:31,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:31,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-12 13:11:31,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:11:31,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4185 [2020-10-12 13:11:31,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-12 13:11:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:11:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:31,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:31,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:31,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:31,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:31,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:31,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:11:31,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:31,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:31,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:31,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:31,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:31,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:31,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:32,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:32,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:11:32,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:32,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 13:11:32,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:32,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:32,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:32,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:32,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:11:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:32,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:32,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:32,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 13:11:32,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:32,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 13:11:32,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:32,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:32,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:32,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 13:11:32,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:32,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-12 13:11:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:32,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:32,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:32,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:11:32,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:32,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-12 13:11:32,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:32,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:32,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:11:32,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 13:11:32,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769616186] [2020-10-12 13:11:32,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:32,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:11:32,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439208823] [2020-10-12 13:11:32,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:11:32,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:32,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:11:32,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:11:32,408 INFO L87 Difference]: Start difference. First operand 6389 states and 7910 transitions. Second operand 7 states. [2020-10-12 13:11:34,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:34,963 INFO L93 Difference]: Finished difference Result 13582 states and 17014 transitions. [2020-10-12 13:11:34,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:11:34,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-12 13:11:34,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:34,997 INFO L225 Difference]: With dead ends: 13582 [2020-10-12 13:11:34,997 INFO L226 Difference]: Without dead ends: 7197 [2020-10-12 13:11:35,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:11:35,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7197 states. [2020-10-12 13:11:35,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7197 to 7169. [2020-10-12 13:11:35,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7169 states. [2020-10-12 13:11:35,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7169 states to 7169 states and 8777 transitions. [2020-10-12 13:11:35,157 INFO L78 Accepts]: Start accepts. Automaton has 7169 states and 8777 transitions. Word has length 311 [2020-10-12 13:11:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:35,158 INFO L479 AbstractCegarLoop]: Abstraction has 7169 states and 8777 transitions. [2020-10-12 13:11:35,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:11:35,158 INFO L276 IsEmpty]: Start isEmpty. Operand 7169 states and 8777 transitions. [2020-10-12 13:11:35,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-12 13:11:35,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:35,171 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:11:35,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:11:35,171 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:35,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:35,172 INFO L82 PathProgramCache]: Analyzing trace with hash 117305599, now seen corresponding path program 1 times [2020-10-12 13:11:35,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:35,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101440912] [2020-10-12 13:11:35,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:35,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:35,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:36,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:37,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:37,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-12 13:11:37,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:11:37,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2659 [2020-10-12 13:11:37,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:37,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:37,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 13:11:37,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 13:11:37,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:37,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:37,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:37,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:37,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:37,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:37,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:11:37,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:37,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:37,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:37,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:37,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:11:37,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:38,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:38,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:38,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:11:38,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:38,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 13:11:38,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:11:38,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:38,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:11:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:38,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:38,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:38,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:11:38,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:38,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 13:11:38,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:38,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:38,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:38,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:11:38,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:38,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-12 13:11:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:38,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:38,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:38,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:11:38,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:38,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:11:38,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 13:11:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:38,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 177 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-12 13:11:38,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101440912] [2020-10-12 13:11:38,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:38,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:11:38,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253521193] [2020-10-12 13:11:38,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:11:38,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:38,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:11:38,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:11:38,418 INFO L87 Difference]: Start difference. First operand 7169 states and 8777 transitions. Second operand 7 states. [2020-10-12 13:11:41,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:41,102 INFO L93 Difference]: Finished difference Result 16499 states and 20701 transitions. [2020-10-12 13:11:41,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:11:41,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-10-12 13:11:41,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:41,131 INFO L225 Difference]: With dead ends: 16499 [2020-10-12 13:11:41,131 INFO L226 Difference]: Without dead ends: 9714 [2020-10-12 13:11:41,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:11:41,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9714 states. [2020-10-12 13:11:41,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9714 to 9308. [2020-10-12 13:11:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9308 states. [2020-10-12 13:11:41,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9308 states to 9308 states and 11566 transitions. [2020-10-12 13:11:41,317 INFO L78 Accepts]: Start accepts. Automaton has 9308 states and 11566 transitions. Word has length 312 [2020-10-12 13:11:41,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:41,318 INFO L479 AbstractCegarLoop]: Abstraction has 9308 states and 11566 transitions. [2020-10-12 13:11:41,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:11:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 9308 states and 11566 transitions. [2020-10-12 13:11:41,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-12 13:11:41,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:41,335 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:11:41,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 13:11:41,335 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:41,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:41,336 INFO L82 PathProgramCache]: Analyzing trace with hash -965192337, now seen corresponding path program 1 times [2020-10-12 13:11:41,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:41,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872202270] [2020-10-12 13:11:41,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:41,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:41,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:41,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:42,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:45,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:45,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-12 13:11:45,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:11:45,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4164 [2020-10-12 13:11:45,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:45,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 13:11:45,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:11:45,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-12 13:11:45,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:45,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:45,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:45,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:45,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:45,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:11:45,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:11:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:45,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:45,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:45,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:45,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:11:45,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:45,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 13:11:45,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:45,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:45,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:45,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:11:45,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:45,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:11:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:45,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:45,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:45,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:11:45,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 13:11:45,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:11:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:11:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:45,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-12 13:11:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:46,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:46,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:46,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:46,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:11:46,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:11:46,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-12 13:11:46,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:11:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:11:46,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 101 proven. 223 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 13:11:46,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872202270] [2020-10-12 13:11:46,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:46,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 13:11:46,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954400951] [2020-10-12 13:11:46,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 13:11:46,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:46,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 13:11:46,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-12 13:11:46,878 INFO L87 Difference]: Start difference. First operand 9308 states and 11566 transitions. Second operand 14 states. [2020-10-12 13:11:47,104 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-10-12 13:11:47,294 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-12 13:11:47,466 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-12 13:11:47,780 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2020-10-12 13:11:48,163 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-12 13:11:48,853 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-12 13:11:49,269 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-12 13:11:49,705 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-12 13:11:49,833 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2020-10-12 13:11:50,031 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-10-12 13:11:50,202 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-12 13:11:50,340 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-10-12 13:11:50,635 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-10-12 13:11:51,497 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-12 13:11:51,695 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-12 13:11:52,698 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-12 13:11:54,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:54,527 INFO L93 Difference]: Finished difference Result 20732 states and 27460 transitions. [2020-10-12 13:11:54,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 13:11:54,529 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 320 [2020-10-12 13:11:54,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:54,571 INFO L225 Difference]: With dead ends: 20732 [2020-10-12 13:11:54,572 INFO L226 Difference]: Without dead ends: 11528 [2020-10-12 13:11:54,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=392, Invalid=1414, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 13:11:54,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11528 states. [2020-10-12 13:11:54,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11528 to 11204. [2020-10-12 13:11:54,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11204 states. [2020-10-12 13:11:54,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11204 states to 11204 states and 14337 transitions. [2020-10-12 13:11:54,813 INFO L78 Accepts]: Start accepts. Automaton has 11204 states and 14337 transitions. Word has length 320 [2020-10-12 13:11:54,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:54,814 INFO L479 AbstractCegarLoop]: Abstraction has 11204 states and 14337 transitions. [2020-10-12 13:11:54,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 13:11:54,814 INFO L276 IsEmpty]: Start isEmpty. Operand 11204 states and 14337 transitions. [2020-10-12 13:11:54,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-12 13:11:54,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:54,828 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:11:54,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 13:11:54,828 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:54,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:54,829 INFO L82 PathProgramCache]: Analyzing trace with hash 296605947, now seen corresponding path program 1 times [2020-10-12 13:11:54,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:54,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880615566] [2020-10-12 13:11:54,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:54,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:55,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:55,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:55,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:57,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:58,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:59,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:59,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:59,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-12 13:11:59,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 13:11:59,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 13:11:59,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:59,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:11:59,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:11:59,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-12 13:11:59,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:59,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:59,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:59,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:59,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:59,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:59,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:11:59,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:59,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:59,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:59,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:59,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:59,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:00,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:00,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:00,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:00,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:12:00,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:12:00,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-12 13:12:00,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:12:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-12 13:12:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:12:00,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:00,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:12:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:00,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:00,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:00,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:12:00,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:00,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 13:12:00,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:00,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:12:00,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:00,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-12 13:12:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:00,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:00,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:12:00,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:00,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 13:12:00,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:00,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:00,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:00,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:12:00,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 237 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-12 13:12:00,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880615566] [2020-10-12 13:12:00,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:00,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:12:00,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112475567] [2020-10-12 13:12:00,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:12:00,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:00,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:12:00,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:12:00,501 INFO L87 Difference]: Start difference. First operand 11204 states and 14337 transitions. Second operand 8 states. [2020-10-12 13:12:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:12:04,377 INFO L93 Difference]: Finished difference Result 24303 states and 31778 transitions. [2020-10-12 13:12:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:12:04,378 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 321 [2020-10-12 13:12:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:12:04,422 INFO L225 Difference]: With dead ends: 24303 [2020-10-12 13:12:04,422 INFO L226 Difference]: Without dead ends: 13483 [2020-10-12 13:12:04,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:12:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13483 states. [2020-10-12 13:12:04,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13483 to 13268. [2020-10-12 13:12:04,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13268 states. [2020-10-12 13:12:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13268 states to 13268 states and 16309 transitions. [2020-10-12 13:12:04,666 INFO L78 Accepts]: Start accepts. Automaton has 13268 states and 16309 transitions. Word has length 321 [2020-10-12 13:12:04,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:12:04,666 INFO L479 AbstractCegarLoop]: Abstraction has 13268 states and 16309 transitions. [2020-10-12 13:12:04,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:12:04,666 INFO L276 IsEmpty]: Start isEmpty. Operand 13268 states and 16309 transitions. [2020-10-12 13:12:04,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-12 13:12:04,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:12:04,678 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:12:04,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 13:12:04,678 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:12:04,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:12:04,678 INFO L82 PathProgramCache]: Analyzing trace with hash -2008645109, now seen corresponding path program 1 times [2020-10-12 13:12:04,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:12:04,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878837607] [2020-10-12 13:12:04,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:12:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:04,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:04,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:05,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:05,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-12 13:12:05,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:12:05,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1204 [2020-10-12 13:12:05,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:05,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:05,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-12 13:12:05,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 13:12:05,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:06,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:12:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:06,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:06,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:06,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:12:06,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:06,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:12:06,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:06,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:06,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:06,125 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-10-12 13:12:06,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:12:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:06,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:06,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:12:06,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:06,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:12:06,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:06,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:06,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:12:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:06,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:06,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:12:06,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:06,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 13:12:06,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:06,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:06,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:06,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:06,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:12:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:06,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:06,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:06,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:12:06,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 13:12:06,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:12:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 13:12:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 93 proven. 3 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-12 13:12:06,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878837607] [2020-10-12 13:12:06,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:06,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:12:06,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426261136] [2020-10-12 13:12:06,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:12:06,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:06,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:12:06,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:12:06,301 INFO L87 Difference]: Start difference. First operand 13268 states and 16309 transitions. Second operand 5 states. [2020-10-12 13:12:08,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:12:08,813 INFO L93 Difference]: Finished difference Result 27125 states and 33576 transitions. [2020-10-12 13:12:08,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:12:08,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-12 13:12:08,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:12:08,847 INFO L225 Difference]: With dead ends: 27125 [2020-10-12 13:12:08,847 INFO L226 Difference]: Without dead ends: 15605 [2020-10-12 13:12:08,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:12:08,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15605 states. [2020-10-12 13:12:09,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15605 to 15386. [2020-10-12 13:12:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15386 states. [2020-10-12 13:12:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15386 states to 15386 states and 18877 transitions. [2020-10-12 13:12:09,137 INFO L78 Accepts]: Start accepts. Automaton has 15386 states and 18877 transitions. Word has length 322 [2020-10-12 13:12:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:12:09,138 INFO L479 AbstractCegarLoop]: Abstraction has 15386 states and 18877 transitions. [2020-10-12 13:12:09,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:12:09,138 INFO L276 IsEmpty]: Start isEmpty. Operand 15386 states and 18877 transitions. [2020-10-12 13:12:09,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-12 13:12:09,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:12:09,151 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:12:09,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 13:12:09,151 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:12:09,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:12:09,151 INFO L82 PathProgramCache]: Analyzing trace with hash 2066462437, now seen corresponding path program 1 times [2020-10-12 13:12:09,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:12:09,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926525020] [2020-10-12 13:12:09,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:12:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:09,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:09,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:10,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:10,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-12 13:12:10,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:12:10,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1385 [2020-10-12 13:12:10,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-12 13:12:10,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:12:10,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:10,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:12:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:10,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:10,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:10,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:12:10,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:12:10,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:10,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:10,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:10,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:10,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:12:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:10,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:10,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:10,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:12:10,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:10,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:12:10,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:10,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:10,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:10,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:10,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:10,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:12:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:10,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:10,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:10,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 13:12:10,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:10,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 13:12:10,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:12:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:10,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:12:10,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:10,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:12:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:10,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:10,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:10,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:12:10,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 13:12:10,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:12:10,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 264 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-12 13:12:11,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926525020] [2020-10-12 13:12:11,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:11,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:12:11,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731498599] [2020-10-12 13:12:11,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:12:11,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:11,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:12:11,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:12:11,049 INFO L87 Difference]: Start difference. First operand 15386 states and 18877 transitions. Second operand 7 states. [2020-10-12 13:12:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:12:14,043 INFO L93 Difference]: Finished difference Result 29449 states and 36287 transitions. [2020-10-12 13:12:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:12:14,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2020-10-12 13:12:14,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:12:14,077 INFO L225 Difference]: With dead ends: 29449 [2020-10-12 13:12:14,077 INFO L226 Difference]: Without dead ends: 16186 [2020-10-12 13:12:14,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:12:14,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16186 states. [2020-10-12 13:12:14,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16186 to 16159. [2020-10-12 13:12:14,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16159 states. [2020-10-12 13:12:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16159 states to 16159 states and 19762 transitions. [2020-10-12 13:12:14,314 INFO L78 Accepts]: Start accepts. Automaton has 16159 states and 19762 transitions. Word has length 343 [2020-10-12 13:12:14,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:12:14,315 INFO L479 AbstractCegarLoop]: Abstraction has 16159 states and 19762 transitions. [2020-10-12 13:12:14,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:12:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 16159 states and 19762 transitions. [2020-10-12 13:12:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-12 13:12:14,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:12:14,326 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:12:14,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 13:12:14,326 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:12:14,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:12:14,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1163936277, now seen corresponding path program 1 times [2020-10-12 13:12:14,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:12:14,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060399597] [2020-10-12 13:12:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:12:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:14,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:14,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:15,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:15,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-12 13:12:15,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:12:15,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1527 [2020-10-12 13:12:15,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 13:12:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:12:15,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 349 [2020-10-12 13:12:15,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:16,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:12:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:16,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:16,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:16,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:12:16,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:16,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:12:16,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:16,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:12:16,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:16,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:12:16,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:16,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:12:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:16,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:16,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:16,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:12:16,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:16,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 13:12:16,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:12:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 13:12:16,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:16,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:12:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:16,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:16,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:16,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 13:12:16,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:16,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-12 13:12:16,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:12:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-12 13:12:16,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 128 proven. 60 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:12:16,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060399597] [2020-10-12 13:12:16,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:16,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:12:16,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798009463] [2020-10-12 13:12:16,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 13:12:16,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:16,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 13:12:16,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:12:16,724 INFO L87 Difference]: Start difference. First operand 16159 states and 19762 transitions. Second operand 11 states. [2020-10-12 13:12:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:12:22,784 INFO L93 Difference]: Finished difference Result 39899 states and 49267 transitions. [2020-10-12 13:12:22,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 13:12:22,786 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 343 [2020-10-12 13:12:22,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:12:22,830 INFO L225 Difference]: With dead ends: 39899 [2020-10-12 13:12:22,831 INFO L226 Difference]: Without dead ends: 26248 [2020-10-12 13:12:22,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-10-12 13:12:22,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26248 states. [2020-10-12 13:12:23,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26248 to 24843. [2020-10-12 13:12:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24843 states. [2020-10-12 13:12:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24843 states to 24843 states and 30619 transitions. [2020-10-12 13:12:23,272 INFO L78 Accepts]: Start accepts. Automaton has 24843 states and 30619 transitions. Word has length 343 [2020-10-12 13:12:23,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:12:23,273 INFO L479 AbstractCegarLoop]: Abstraction has 24843 states and 30619 transitions. [2020-10-12 13:12:23,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 13:12:23,273 INFO L276 IsEmpty]: Start isEmpty. Operand 24843 states and 30619 transitions. [2020-10-12 13:12:23,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-10-12 13:12:23,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:12:23,291 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:12:23,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 13:12:23,291 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:12:23,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:12:23,292 INFO L82 PathProgramCache]: Analyzing trace with hash 519691084, now seen corresponding path program 1 times [2020-10-12 13:12:23,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:12:23,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152295331] [2020-10-12 13:12:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:12:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:23,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:23,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:24,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:24,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 389 [2020-10-12 13:12:24,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:12:24,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-10-12 13:12:24,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:12:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:12:24,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:24,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:12:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:24,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:24,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:24,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:12:24,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:24,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:12:24,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:24,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:24,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:24,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:24,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:24,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:12:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:24,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:24,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:24,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:12:24,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:24,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 13:12:24,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:12:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:12:24,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:24,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:12:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:24,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:24,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:12:24,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:24,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 13:12:24,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:12:24,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:24,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-12 13:12:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:24,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:24,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:12:24,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:24,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 13:12:24,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 13:12:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:24,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 204 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-12 13:12:25,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152295331] [2020-10-12 13:12:25,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:25,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:12:25,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67748410] [2020-10-12 13:12:25,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:12:25,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:25,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:12:25,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:12:25,036 INFO L87 Difference]: Start difference. First operand 24843 states and 30619 transitions. Second operand 7 states. [2020-10-12 13:12:27,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:12:27,838 INFO L93 Difference]: Finished difference Result 49628 states and 61159 transitions. [2020-10-12 13:12:27,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:12:27,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 375 [2020-10-12 13:12:27,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:12:27,893 INFO L225 Difference]: With dead ends: 49628 [2020-10-12 13:12:27,893 INFO L226 Difference]: Without dead ends: 25169 [2020-10-12 13:12:27,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:12:27,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25169 states. [2020-10-12 13:12:28,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25169 to 25113. [2020-10-12 13:12:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25113 states. [2020-10-12 13:12:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25113 states to 25113 states and 30333 transitions. [2020-10-12 13:12:28,273 INFO L78 Accepts]: Start accepts. Automaton has 25113 states and 30333 transitions. Word has length 375 [2020-10-12 13:12:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:12:28,273 INFO L479 AbstractCegarLoop]: Abstraction has 25113 states and 30333 transitions. [2020-10-12 13:12:28,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:12:28,273 INFO L276 IsEmpty]: Start isEmpty. Operand 25113 states and 30333 transitions. [2020-10-12 13:12:28,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-10-12 13:12:28,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:12:28,287 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:12:28,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 13:12:28,287 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:12:28,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:12:28,288 INFO L82 PathProgramCache]: Analyzing trace with hash -37054821, now seen corresponding path program 1 times [2020-10-12 13:12:28,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:12:28,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999266004] [2020-10-12 13:12:28,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:12:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:28,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:28,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:29,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:29,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-12 13:12:29,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:12:29,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-10-12 13:12:29,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:29,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:29,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-12 13:12:29,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-12 13:12:29,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:29,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:12:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:29,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:29,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:29,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:12:29,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:29,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:12:29,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:29,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:29,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:29,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:12:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:29,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:29,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:29,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:12:29,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:29,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:12:29,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:29,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:29,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:29,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:29,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:29,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:12:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:29,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:29,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:29,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:12:29,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:29,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 13:12:29,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:12:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:12:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:29,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:12:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:29,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:29,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:12:29,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:29,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 13:12:29,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:29,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 13:12:29,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 301 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-12 13:12:29,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999266004] [2020-10-12 13:12:29,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:29,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:12:29,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015132767] [2020-10-12 13:12:29,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:12:29,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:29,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:12:29,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:12:29,924 INFO L87 Difference]: Start difference. First operand 25113 states and 30333 transitions. Second operand 7 states. [2020-10-12 13:12:33,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:12:33,416 INFO L93 Difference]: Finished difference Result 48543 states and 62373 transitions. [2020-10-12 13:12:33,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:12:33,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 380 [2020-10-12 13:12:33,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:12:33,506 INFO L225 Difference]: With dead ends: 48543 [2020-10-12 13:12:33,506 INFO L226 Difference]: Without dead ends: 27486 [2020-10-12 13:12:33,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:12:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27486 states. [2020-10-12 13:12:34,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27486 to 26646. [2020-10-12 13:12:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26646 states. [2020-10-12 13:12:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26646 states to 26646 states and 32065 transitions. [2020-10-12 13:12:34,289 INFO L78 Accepts]: Start accepts. Automaton has 26646 states and 32065 transitions. Word has length 380 [2020-10-12 13:12:34,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:12:34,290 INFO L479 AbstractCegarLoop]: Abstraction has 26646 states and 32065 transitions. [2020-10-12 13:12:34,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:12:34,290 INFO L276 IsEmpty]: Start isEmpty. Operand 26646 states and 32065 transitions. [2020-10-12 13:12:34,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-12 13:12:34,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:12:34,304 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:12:34,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 13:12:34,305 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:12:34,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:12:34,305 INFO L82 PathProgramCache]: Analyzing trace with hash -96416474, now seen corresponding path program 1 times [2020-10-12 13:12:34,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:12:34,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862393999] [2020-10-12 13:12:34,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:12:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:34,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:34,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:35,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:35,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-12 13:12:35,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:12:35,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 909 [2020-10-12 13:12:35,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:35,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:35,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:12:35,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 13:12:35,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:35,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:12:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:35,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:35,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:35,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:12:35,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:35,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:12:35,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:35,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:35,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:35,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:12:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:35,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:35,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:35,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:12:35,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:35,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 13:12:35,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:35,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:12:35,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:35,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:12:35,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:12:35,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:12:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:35,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:35,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:35,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 13:12:35,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:35,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 13:12:35,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:35,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:35,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:35,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 13:12:35,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:35,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-12 13:12:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:35,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:35,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:35,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:12:35,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:35,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 13:12:35,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-12 13:12:35,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:35,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:12:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 190 proven. 98 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-12 13:12:36,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862393999] [2020-10-12 13:12:36,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:36,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:12:36,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280207381] [2020-10-12 13:12:36,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:12:36,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:36,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:12:36,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:12:36,068 INFO L87 Difference]: Start difference. First operand 26646 states and 32065 transitions. Second operand 7 states. [2020-10-12 13:12:39,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:12:39,283 INFO L93 Difference]: Finished difference Result 60957 states and 73366 transitions. [2020-10-12 13:12:39,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:12:39,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 398 [2020-10-12 13:12:39,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:12:39,351 INFO L225 Difference]: With dead ends: 60957 [2020-10-12 13:12:39,351 INFO L226 Difference]: Without dead ends: 34695 [2020-10-12 13:12:39,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:12:39,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34695 states. [2020-10-12 13:12:39,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34695 to 33462. [2020-10-12 13:12:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33462 states. [2020-10-12 13:12:39,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33462 states to 33462 states and 39774 transitions. [2020-10-12 13:12:39,857 INFO L78 Accepts]: Start accepts. Automaton has 33462 states and 39774 transitions. Word has length 398 [2020-10-12 13:12:39,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:12:39,858 INFO L479 AbstractCegarLoop]: Abstraction has 33462 states and 39774 transitions. [2020-10-12 13:12:39,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:12:39,858 INFO L276 IsEmpty]: Start isEmpty. Operand 33462 states and 39774 transitions. [2020-10-12 13:12:39,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-12 13:12:39,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:12:39,876 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 13:12:39,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 13:12:39,877 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:12:39,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:12:39,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1381912613, now seen corresponding path program 1 times [2020-10-12 13:12:39,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:12:39,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467026433] [2020-10-12 13:12:39,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:12:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:40,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:42,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:42,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-12 13:12:42,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:12:42,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2896 [2020-10-12 13:12:42,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:12:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:12:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-12 13:12:42,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:42,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:12:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:42,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:42,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:42,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:12:42,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:42,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:12:42,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:42,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:12:42,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:42,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:12:42,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:42,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:12:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:42,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:43,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:43,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:12:43,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:43,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 13:12:43,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:43,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:43,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:43,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 13:12:43,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:43,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:12:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:43,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:43,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:43,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:12:43,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:43,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 13:12:43,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:43,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:12:43,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:43,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:12:43,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:43,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:12:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:43,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:43,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:43,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:12:43,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 13:12:43,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:12:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:43,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-12 13:12:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:43,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:43,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:43,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:12:43,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:43,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 13:12:43,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:43,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:43,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 13:12:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:43,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 130 proven. 389 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-12 13:12:43,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467026433] [2020-10-12 13:12:43,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:43,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:12:43,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002934989] [2020-10-12 13:12:43,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:12:43,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:43,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:12:43,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:12:43,506 INFO L87 Difference]: Start difference. First operand 33462 states and 39774 transitions. Second operand 10 states. [2020-10-12 13:12:48,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:12:48,168 INFO L93 Difference]: Finished difference Result 63905 states and 78280 transitions. [2020-10-12 13:12:48,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 13:12:48,169 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 418 [2020-10-12 13:12:48,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:12:48,239 INFO L225 Difference]: With dead ends: 63905 [2020-10-12 13:12:48,239 INFO L226 Difference]: Without dead ends: 35446 [2020-10-12 13:12:48,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2020-10-12 13:12:48,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35446 states. [2020-10-12 13:12:48,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35446 to 34814. [2020-10-12 13:12:48,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34814 states. [2020-10-12 13:12:49,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34814 states to 34814 states and 41234 transitions. [2020-10-12 13:12:49,062 INFO L78 Accepts]: Start accepts. Automaton has 34814 states and 41234 transitions. Word has length 418 [2020-10-12 13:12:49,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:12:49,063 INFO L479 AbstractCegarLoop]: Abstraction has 34814 states and 41234 transitions. [2020-10-12 13:12:49,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 13:12:49,063 INFO L276 IsEmpty]: Start isEmpty. Operand 34814 states and 41234 transitions. [2020-10-12 13:12:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-12 13:12:49,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:12:49,084 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 13:12:49,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 13:12:49,084 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:12:49,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:12:49,085 INFO L82 PathProgramCache]: Analyzing trace with hash -219258845, now seen corresponding path program 1 times [2020-10-12 13:12:49,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:12:49,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516784342] [2020-10-12 13:12:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:12:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:49,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:49,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-12 13:12:49,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-10-12 13:12:49,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-12 13:12:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:12:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:49,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:12:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:49,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:50,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:50,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:12:50,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:12:50,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:50,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:50,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:12:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:50,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:50,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:50,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:12:50,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:50,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 13:12:50,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:50,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:50,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:12:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:50,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:50,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:50,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:12:50,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 13:12:50,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:50,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:50,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:12:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:50,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:50,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:50,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:12:50,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:50,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 13:12:50,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:12:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:12:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:50,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-12 13:12:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:50,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:50,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:50,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:12:50,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:50,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 13:12:50,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:50,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:12:50,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:12:50,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:12:50,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 380 proven. 2 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2020-10-12 13:12:50,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516784342] [2020-10-12 13:12:50,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:12:50,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:12:50,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084065360] [2020-10-12 13:12:50,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:12:50,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:12:50,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:12:50,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:12:50,453 INFO L87 Difference]: Start difference. First operand 34814 states and 41234 transitions. Second operand 7 states. [2020-10-12 13:12:53,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:12:53,798 INFO L93 Difference]: Finished difference Result 74854 states and 88340 transitions. [2020-10-12 13:12:53,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:12:53,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 422 [2020-10-12 13:12:53,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:12:53,864 INFO L225 Difference]: With dead ends: 74854 [2020-10-12 13:12:53,864 INFO L226 Difference]: Without dead ends: 40234 [2020-10-12 13:12:53,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:12:53,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40234 states. [2020-10-12 13:12:54,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40234 to 39358. [2020-10-12 13:12:54,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39358 states. [2020-10-12 13:12:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39358 states to 39358 states and 45645 transitions. [2020-10-12 13:12:54,735 INFO L78 Accepts]: Start accepts. Automaton has 39358 states and 45645 transitions. Word has length 422 [2020-10-12 13:12:54,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:12:54,736 INFO L479 AbstractCegarLoop]: Abstraction has 39358 states and 45645 transitions. [2020-10-12 13:12:54,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:12:54,736 INFO L276 IsEmpty]: Start isEmpty. Operand 39358 states and 45645 transitions. [2020-10-12 13:12:54,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-10-12 13:12:54,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:12:54,751 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 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 13:12:54,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 13:12:54,751 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:12:54,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:12:54,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1617237755, now seen corresponding path program 1 times [2020-10-12 13:12:54,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:12:54,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847914646] [2020-10-12 13:12:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:12:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:54,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:54,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:55,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:55,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:56,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:59,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:59,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-12 13:12:59,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:12:59,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 13:12:59,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:12:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-12 13:12:59,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 13:12:59,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:59,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:12:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:59,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:59,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:59,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:12:59,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:59,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:12:59,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:59,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:59,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:12:59,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:12:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:12:59,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:12:59,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:12:59,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:12:59,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:12:59,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:12:59,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:12:59,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:12:59,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:12:59,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:12:59,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:00,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:13:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:00,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:00,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:00,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:13:00,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:00,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 13:13:00,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:00,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:00,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:13:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:00,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:00,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:00,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:13:00,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:00,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 13:13:00,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:13:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 13:13:00,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:00,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-12 13:13:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:00,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:00,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:00,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:00,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 13:13:00,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:13:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-12 13:13:00,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:13:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:13:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 13:13:00,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 395 proven. 2 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2020-10-12 13:13:01,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847914646] [2020-10-12 13:13:01,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:13:01,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:13:01,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463999000] [2020-10-12 13:13:01,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:13:01,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:01,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:13:01,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:13:01,363 INFO L87 Difference]: Start difference. First operand 39358 states and 45645 transitions. Second operand 10 states. [2020-10-12 13:13:01,534 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-12 13:13:01,715 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-12 13:13:02,009 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-12 13:13:02,149 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-10-12 13:13:03,425 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-10-12 13:13:03,699 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-10-12 13:13:04,195 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-10-12 13:13:05,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:05,794 INFO L93 Difference]: Finished difference Result 72942 states and 84865 transitions. [2020-10-12 13:13:05,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 13:13:05,796 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 439 [2020-10-12 13:13:05,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:05,871 INFO L225 Difference]: With dead ends: 72942 [2020-10-12 13:13:05,871 INFO L226 Difference]: Without dead ends: 39368 [2020-10-12 13:13:05,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-10-12 13:13:05,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39368 states. [2020-10-12 13:13:06,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39368 to 39156. [2020-10-12 13:13:06,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39156 states. [2020-10-12 13:13:06,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39156 states to 39156 states and 45183 transitions. [2020-10-12 13:13:06,321 INFO L78 Accepts]: Start accepts. Automaton has 39156 states and 45183 transitions. Word has length 439 [2020-10-12 13:13:06,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:06,321 INFO L479 AbstractCegarLoop]: Abstraction has 39156 states and 45183 transitions. [2020-10-12 13:13:06,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 13:13:06,321 INFO L276 IsEmpty]: Start isEmpty. Operand 39156 states and 45183 transitions. [2020-10-12 13:13:06,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2020-10-12 13:13:06,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:06,335 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:13:06,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 13:13:06,335 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:06,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1072899369, now seen corresponding path program 1 times [2020-10-12 13:13:06,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:06,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417597010] [2020-10-12 13:13:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:06,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:06,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:07,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:07,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:07,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 458 [2020-10-12 13:13:07,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:13:07,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1587 [2020-10-12 13:13:07,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:13:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-12 13:13:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-12 13:13:07,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:08,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:13:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:08,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:08,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:08,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:13:08,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:08,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:13:08,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:08,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:08,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:08,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:08,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:08,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:13:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:08,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:08,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:08,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:13:08,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:08,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:13:08,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:08,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:08,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:08,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:08,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:08,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:13:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:08,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:08,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:08,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:13:08,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:08,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 13:13:08,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:13:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 13:13:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:08,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-12 13:13:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:08,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:08,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:08,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 13:13:08,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:08,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 13:13:08,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:13:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:13:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-12 13:13:08,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 303 proven. 31 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-12 13:13:08,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417597010] [2020-10-12 13:13:08,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:13:08,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:13:08,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052978855] [2020-10-12 13:13:08,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:13:08,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:08,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:13:08,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:13:08,693 INFO L87 Difference]: Start difference. First operand 39156 states and 45183 transitions. Second operand 6 states. [2020-10-12 13:13:11,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:11,905 INFO L93 Difference]: Finished difference Result 75700 states and 87696 transitions. [2020-10-12 13:13:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:13:11,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 444 [2020-10-12 13:13:11,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:11,976 INFO L225 Difference]: With dead ends: 75700 [2020-10-12 13:13:11,976 INFO L226 Difference]: Without dead ends: 40974 [2020-10-12 13:13:12,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:13:12,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40974 states. [2020-10-12 13:13:12,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40974 to 39542. [2020-10-12 13:13:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39542 states. [2020-10-12 13:13:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39542 states to 39542 states and 45340 transitions. [2020-10-12 13:13:12,434 INFO L78 Accepts]: Start accepts. Automaton has 39542 states and 45340 transitions. Word has length 444 [2020-10-12 13:13:12,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:12,434 INFO L479 AbstractCegarLoop]: Abstraction has 39542 states and 45340 transitions. [2020-10-12 13:13:12,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:13:12,434 INFO L276 IsEmpty]: Start isEmpty. Operand 39542 states and 45340 transitions. [2020-10-12 13:13:12,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-12 13:13:12,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:12,443 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:13:12,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 13:13:12,444 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:12,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:12,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1913809811, now seen corresponding path program 1 times [2020-10-12 13:13:12,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:12,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562579156] [2020-10-12 13:13:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:12,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:13,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:13,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-12 13:13:13,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:13,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-10-12 13:13:13,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:13:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 329 [2020-10-12 13:13:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:13:13,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:13,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:13:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:13,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:13,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:13,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:13:13,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:13,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:13:13,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:13,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:13,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:13,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:13:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:13,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:13,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:13,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:13:13,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:13,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:13:13,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:13,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:13,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:13,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:13:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:13,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:13,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:13,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:13:13,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:13,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 13:13:13,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:13,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:13,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:13,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:13,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:13:13,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:13:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:13,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:13,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 13:13:13,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:13,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 13:13:13,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:13,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:13:13,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:13,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 13:13:13,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:13,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-10-12 13:13:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:13,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:13,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:13,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:13:13,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 13:13:13,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:13:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:13:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:13:13,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 395 proven. 2 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-10-12 13:13:13,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562579156] [2020-10-12 13:13:13,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:13:13,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:13:13,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355581039] [2020-10-12 13:13:13,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:13:13,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:13,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:13:13,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:13:13,712 INFO L87 Difference]: Start difference. First operand 39542 states and 45340 transitions. Second operand 7 states. [2020-10-12 13:13:16,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:16,770 INFO L93 Difference]: Finished difference Result 75554 states and 86681 transitions. [2020-10-12 13:13:16,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:13:16,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 446 [2020-10-12 13:13:16,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:16,833 INFO L225 Difference]: With dead ends: 75554 [2020-10-12 13:13:16,833 INFO L226 Difference]: Without dead ends: 40070 [2020-10-12 13:13:16,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:13:16,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40070 states. [2020-10-12 13:13:17,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40070 to 37308. [2020-10-12 13:13:17,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37308 states. [2020-10-12 13:13:17,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37308 states to 37308 states and 42499 transitions. [2020-10-12 13:13:17,269 INFO L78 Accepts]: Start accepts. Automaton has 37308 states and 42499 transitions. Word has length 446 [2020-10-12 13:13:17,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:17,270 INFO L479 AbstractCegarLoop]: Abstraction has 37308 states and 42499 transitions. [2020-10-12 13:13:17,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:13:17,270 INFO L276 IsEmpty]: Start isEmpty. Operand 37308 states and 42499 transitions. [2020-10-12 13:13:17,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-12 13:13:17,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:17,281 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:13:17,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 13:13:17,281 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:17,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:17,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1241058210, now seen corresponding path program 1 times [2020-10-12 13:13:17,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:17,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359398436] [2020-10-12 13:13:17,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:17,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:17,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:17,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:18,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:19,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:19,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-12 13:13:19,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:13:19,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2207 [2020-10-12 13:13:19,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:13:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-12 13:13:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-12 13:13:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:19,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:13:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:19,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:19,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:19,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:13:19,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:19,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:13:19,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:19,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:19,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:19,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:19,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:19,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:13:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:19,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:19,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:19,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:13:19,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:19,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 13:13:19,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:19,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:19,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:19,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:19,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:13:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:19,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:19,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:19,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 13:13:19,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:19,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 13:13:19,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:19,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:13:19,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:13:19,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:19,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-12 13:13:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:19,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:19,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:20,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:20,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 13:13:20,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:13:20,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 13:13:20,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:13:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:13:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-12 13:13:20,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 302 proven. 31 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-12 13:13:20,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359398436] [2020-10-12 13:13:20,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:13:20,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:13:20,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370754441] [2020-10-12 13:13:20,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:13:20,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:20,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:13:20,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:13:20,153 INFO L87 Difference]: Start difference. First operand 37308 states and 42499 transitions. Second operand 6 states. [2020-10-12 13:13:22,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:22,947 INFO L93 Difference]: Finished difference Result 41000 states and 46637 transitions. [2020-10-12 13:13:22,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:13:22,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 446 [2020-10-12 13:13:22,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:23,007 INFO L225 Difference]: With dead ends: 41000 [2020-10-12 13:13:23,007 INFO L226 Difference]: Without dead ends: 40998 [2020-10-12 13:13:23,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:13:23,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40998 states. [2020-10-12 13:13:23,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40998 to 38256. [2020-10-12 13:13:23,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38256 states. [2020-10-12 13:13:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38256 states to 38256 states and 43632 transitions. [2020-10-12 13:13:23,425 INFO L78 Accepts]: Start accepts. Automaton has 38256 states and 43632 transitions. Word has length 446 [2020-10-12 13:13:23,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:23,426 INFO L479 AbstractCegarLoop]: Abstraction has 38256 states and 43632 transitions. [2020-10-12 13:13:23,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:13:23,426 INFO L276 IsEmpty]: Start isEmpty. Operand 38256 states and 43632 transitions. [2020-10-12 13:13:23,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2020-10-12 13:13:23,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:23,447 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:23,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 13:13:23,447 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:23,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:23,448 INFO L82 PathProgramCache]: Analyzing trace with hash 754442583, now seen corresponding path program 1 times [2020-10-12 13:13:23,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:23,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103825940] [2020-10-12 13:13:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:23,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:24,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:24,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-10-12 13:13:24,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:24,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-10-12 13:13:24,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:24,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:13:24,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 408 [2020-10-12 13:13:24,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:13:24,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:24,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:13:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:24,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:24,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:24,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:13:24,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:24,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:13:24,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:24,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:24,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:13:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:24,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:24,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:24,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:13:24,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:24,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:13:24,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:24,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:24,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:24,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:13:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:24,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:24,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:24,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 13:13:24,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:24,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 13:13:24,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:24,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:24,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-12 13:13:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:24,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:24,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:24,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 13:13:24,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:24,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 13:13:24,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:24,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:13:24,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:24,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 13:13:24,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:24,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2020-10-12 13:13:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:24,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:24,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:24,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:13:24,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:24,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 13:13:24,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:24,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:13:24,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:13:24,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:13:24,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:24,892 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 397 proven. 2 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2020-10-12 13:13:24,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103825940] [2020-10-12 13:13:24,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:13:24,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:13:24,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776978998] [2020-10-12 13:13:24,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:13:24,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:24,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:13:24,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:13:24,894 INFO L87 Difference]: Start difference. First operand 38256 states and 43632 transitions. Second operand 7 states. [2020-10-12 13:13:27,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:27,988 INFO L93 Difference]: Finished difference Result 72770 states and 83289 transitions. [2020-10-12 13:13:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:13:27,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 525 [2020-10-12 13:13:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:28,049 INFO L225 Difference]: With dead ends: 72770 [2020-10-12 13:13:28,049 INFO L226 Difference]: Without dead ends: 39525 [2020-10-12 13:13:28,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:13:28,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39525 states. [2020-10-12 13:13:28,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39525 to 38641. [2020-10-12 13:13:28,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38641 states. [2020-10-12 13:13:28,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38641 states to 38641 states and 43782 transitions. [2020-10-12 13:13:28,486 INFO L78 Accepts]: Start accepts. Automaton has 38641 states and 43782 transitions. Word has length 525 [2020-10-12 13:13:28,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:28,486 INFO L479 AbstractCegarLoop]: Abstraction has 38641 states and 43782 transitions. [2020-10-12 13:13:28,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:13:28,486 INFO L276 IsEmpty]: Start isEmpty. Operand 38641 states and 43782 transitions. [2020-10-12 13:13:28,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2020-10-12 13:13:28,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:28,501 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:13:28,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 13:13:28,502 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:28,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:28,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2105134033, now seen corresponding path program 1 times [2020-10-12 13:13:28,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:28,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984722581] [2020-10-12 13:13:28,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:28,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:28,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:29,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:29,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 552 [2020-10-12 13:13:29,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:13:29,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-10-12 13:13:29,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:29,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:13:29,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-12 13:13:29,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-12 13:13:29,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:29,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:13:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:29,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:29,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:29,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:13:29,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:29,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:13:29,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:29,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:29,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:29,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:29,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:29,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:13:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:29,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:29,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:29,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 13:13:29,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 13:13:29,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:29,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:29,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-12 13:13:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:29,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:29,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:29,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 13:13:29,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:29,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 13:13:29,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:13:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-12 13:13:29,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:29,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-12 13:13:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:29,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:30,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:30,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 13:13:30,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:30,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 13:13:30,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:30,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:13:30,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:13:30,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-12 13:13:30,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 386 proven. 31 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-12 13:13:30,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984722581] [2020-10-12 13:13:30,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:13:30,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:13:30,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48938632] [2020-10-12 13:13:30,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:13:30,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:30,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:13:30,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:13:30,287 INFO L87 Difference]: Start difference. First operand 38641 states and 43782 transitions. Second operand 8 states. [2020-10-12 13:13:36,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:36,025 INFO L93 Difference]: Finished difference Result 88475 states and 100202 transitions. [2020-10-12 13:13:36,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 13:13:36,026 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 538 [2020-10-12 13:13:36,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:36,124 INFO L225 Difference]: With dead ends: 88475 [2020-10-12 13:13:36,124 INFO L226 Difference]: Without dead ends: 55228 [2020-10-12 13:13:36,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:13:36,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55228 states. [2020-10-12 13:13:36,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55228 to 51189. [2020-10-12 13:13:36,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51189 states. [2020-10-12 13:13:36,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51189 states to 51189 states and 57588 transitions. [2020-10-12 13:13:36,773 INFO L78 Accepts]: Start accepts. Automaton has 51189 states and 57588 transitions. Word has length 538 [2020-10-12 13:13:36,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:36,774 INFO L479 AbstractCegarLoop]: Abstraction has 51189 states and 57588 transitions. [2020-10-12 13:13:36,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:13:36,774 INFO L276 IsEmpty]: Start isEmpty. Operand 51189 states and 57588 transitions. [2020-10-12 13:13:36,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2020-10-12 13:13:36,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:36,797 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:13:36,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 13:13:36,797 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:36,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:36,798 INFO L82 PathProgramCache]: Analyzing trace with hash 238567785, now seen corresponding path program 1 times [2020-10-12 13:13:36,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:36,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572207825] [2020-10-12 13:13:36,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:36,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:37,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:38,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:40,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:40,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 586 [2020-10-12 13:13:40,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:13:40,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3142 [2020-10-12 13:13:40,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:13:40,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-12 13:13:40,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-12 13:13:40,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:40,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:13:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:40,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:40,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:40,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:13:40,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:40,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:13:40,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:40,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:13:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:40,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:40,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:40,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 13:13:40,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 13:13:40,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:40,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:40,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:40,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:40,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:40,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-12 13:13:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:40,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:40,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 13:13:40,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:40,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 13:13:40,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:40,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:13:40,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:40,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-12 13:13:40,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:40,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-12 13:13:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:40,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:40,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:40,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:13:40,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:40,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-12 13:13:40,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:13:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:13:40,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:13:40,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:40,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-12 13:13:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:40,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:40,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:40,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:13:40,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:40,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 13:13:40,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:40,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:13:40,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:13:40,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:13:40,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 529 proven. 93 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-12 13:13:41,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572207825] [2020-10-12 13:13:41,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:13:41,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:13:41,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049410582] [2020-10-12 13:13:41,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:13:41,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:41,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:13:41,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:13:41,356 INFO L87 Difference]: Start difference. First operand 51189 states and 57588 transitions. Second operand 10 states. [2020-10-12 13:13:47,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:47,134 INFO L93 Difference]: Finished difference Result 90405 states and 102081 transitions. [2020-10-12 13:13:47,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 13:13:47,136 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 570 [2020-10-12 13:13:47,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:47,228 INFO L225 Difference]: With dead ends: 90405 [2020-10-12 13:13:47,228 INFO L226 Difference]: Without dead ends: 52328 [2020-10-12 13:13:47,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-10-12 13:13:47,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52328 states. [2020-10-12 13:13:47,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52328 to 50241. [2020-10-12 13:13:47,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50241 states. [2020-10-12 13:13:47,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50241 states to 50241 states and 56461 transitions. [2020-10-12 13:13:47,824 INFO L78 Accepts]: Start accepts. Automaton has 50241 states and 56461 transitions. Word has length 570 [2020-10-12 13:13:47,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:47,824 INFO L479 AbstractCegarLoop]: Abstraction has 50241 states and 56461 transitions. [2020-10-12 13:13:47,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 13:13:47,824 INFO L276 IsEmpty]: Start isEmpty. Operand 50241 states and 56461 transitions. [2020-10-12 13:13:47,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2020-10-12 13:13:47,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:47,843 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:13:47,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 13:13:47,843 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:47,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:47,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1075297707, now seen corresponding path program 1 times [2020-10-12 13:13:47,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:47,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404631906] [2020-10-12 13:13:47,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:47,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:48,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:48,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:50,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:52,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:52,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 590 [2020-10-12 13:13:52,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:13:52,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 13:13:52,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:52,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:13:52,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 415 [2020-10-12 13:13:52,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-12 13:13:52,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:53,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:13:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:53,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:53,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:53,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:13:53,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:53,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:13:53,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:53,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:53,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:53,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:53,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:13:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:53,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:53,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:53,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:13:53,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:53,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 13:13:53,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:53,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:53,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:53,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:13:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:53,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:53,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:53,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 13:13:53,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:13:53,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:13:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:53,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:13:53,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-12 13:13:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:53,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:53,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:53,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-12 13:13:53,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:53,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 13:13:53,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:53,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:13:53,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:13:53,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-12 13:13:53,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-12 13:13:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:53,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:53,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:13:53,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 13:13:53,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:13:53,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-12 13:13:53,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:13:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:13:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:13:53,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-12 13:13:53,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:13:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 469 proven. 32 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2020-10-12 13:13:53,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404631906] [2020-10-12 13:13:53,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:13:53,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:13:53,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577287891] [2020-10-12 13:13:53,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:13:53,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:13:53,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:13:53,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:13:53,574 INFO L87 Difference]: Start difference. First operand 50241 states and 56461 transitions. Second operand 6 states. [2020-10-12 13:13:56,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:13:56,572 INFO L93 Difference]: Finished difference Result 89772 states and 101481 transitions. [2020-10-12 13:13:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:13:56,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 574 [2020-10-12 13:13:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:13:56,656 INFO L225 Difference]: With dead ends: 89772 [2020-10-12 13:13:56,656 INFO L226 Difference]: Without dead ends: 48960 [2020-10-12 13:13:56,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:13:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48960 states. [2020-10-12 13:13:57,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48960 to 48474. [2020-10-12 13:13:57,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48474 states. [2020-10-12 13:13:57,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48474 states to 48474 states and 53839 transitions. [2020-10-12 13:13:57,231 INFO L78 Accepts]: Start accepts. Automaton has 48474 states and 53839 transitions. Word has length 574 [2020-10-12 13:13:57,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:13:57,231 INFO L479 AbstractCegarLoop]: Abstraction has 48474 states and 53839 transitions. [2020-10-12 13:13:57,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:13:57,231 INFO L276 IsEmpty]: Start isEmpty. Operand 48474 states and 53839 transitions. [2020-10-12 13:13:57,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2020-10-12 13:13:57,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:13:57,251 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:57,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 13:13:57,251 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:13:57,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:13:57,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1908818956, now seen corresponding path program 1 times [2020-10-12 13:13:57,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:13:57,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712873233] [2020-10-12 13:13:57,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:13:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:13:57,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:57,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:13:59,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:00,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:00,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 612 [2020-10-12 13:14:00,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:14:00,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2977 [2020-10-12 13:14:00,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:00,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 13:14:00,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-12 13:14:00,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 293 [2020-10-12 13:14:00,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:14:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:00,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:00,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:00,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:14:00,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:00,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:14:00,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:00,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:00,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:00,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:00,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:00,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:14:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:00,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:00,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:00,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:14:00,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:14:00,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:00,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:14:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:00,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:00,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:00,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:14:00,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:00,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 13:14:00,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:00,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:00,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:14:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:00,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:00,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:00,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 13:14:00,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:00,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 13:14:00,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:14:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:14:00,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:00,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-12 13:14:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:00,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:00,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:00,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 13:14:00,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:00,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 13:14:00,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:14:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:14:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 13:14:00,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:00,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-10-12 13:14:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:00,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:00,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:00,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:14:00,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:00,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 13:14:00,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:14:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:14:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:14:00,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 752 proven. 63 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-12 13:14:01,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712873233] [2020-10-12 13:14:01,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:14:01,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:14:01,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363720037] [2020-10-12 13:14:01,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:14:01,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:14:01,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:14:01,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:14:01,292 INFO L87 Difference]: Start difference. First operand 48474 states and 53839 transitions. Second operand 9 states. [2020-10-12 13:14:06,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:14:06,828 INFO L93 Difference]: Finished difference Result 99913 states and 111963 transitions. [2020-10-12 13:14:06,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 13:14:06,830 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 594 [2020-10-12 13:14:06,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:14:06,940 INFO L225 Difference]: With dead ends: 99913 [2020-10-12 13:14:06,940 INFO L226 Difference]: Without dead ends: 63963 [2020-10-12 13:14:06,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-12 13:14:07,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63963 states. [2020-10-12 13:14:07,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63963 to 61204. [2020-10-12 13:14:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61204 states. [2020-10-12 13:14:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61204 states to 61204 states and 67847 transitions. [2020-10-12 13:14:07,706 INFO L78 Accepts]: Start accepts. Automaton has 61204 states and 67847 transitions. Word has length 594 [2020-10-12 13:14:07,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:14:07,706 INFO L479 AbstractCegarLoop]: Abstraction has 61204 states and 67847 transitions. [2020-10-12 13:14:07,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:14:07,707 INFO L276 IsEmpty]: Start isEmpty. Operand 61204 states and 67847 transitions. [2020-10-12 13:14:07,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2020-10-12 13:14:07,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:14:07,734 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:14:07,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 13:14:07,735 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:14:07,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:14:07,735 INFO L82 PathProgramCache]: Analyzing trace with hash -597811984, now seen corresponding path program 1 times [2020-10-12 13:14:07,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:14:07,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074760298] [2020-10-12 13:14:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:14:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:07,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:08,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:08,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:11,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:12,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:12,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 672 [2020-10-12 13:14:12,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:14:12,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-12 13:14:12,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:12,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:14:12,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 456 [2020-10-12 13:14:12,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-12 13:14:12,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:12,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:14:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:12,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:12,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:12,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:14:12,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:14:12,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:14:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:12,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:13,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:13,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:14:13,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:13,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:14:13,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:13,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:13,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:13,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:13,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:14:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:13,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:13,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:13,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-12 13:14:13,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 13:14:13,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:14:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:13,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:14:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:13,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-12 13:14:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:13,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:13,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:13,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:14:13,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:13,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 13:14:13,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 13:14:13,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:14:13,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:14:13,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:13,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2020-10-12 13:14:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:13,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:14:13,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 13:14:13,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:14:13,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-12 13:14:13,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:14:13,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:14:13,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:14:13,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-12 13:14:13,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:14:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 533 proven. 32 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2020-10-12 13:14:13,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074760298] [2020-10-12 13:14:13,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:14:13,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:14:13,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010415729] [2020-10-12 13:14:13,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:14:13,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:14:13,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:14:13,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:14:13,672 INFO L87 Difference]: Start difference. First operand 61204 states and 67847 transitions. Second operand 9 states. [2020-10-12 13:14:20,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:14:20,356 INFO L93 Difference]: Finished difference Result 132710 states and 147390 transitions. [2020-10-12 13:14:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 13:14:20,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 656 [2020-10-12 13:14:20,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:14:20,500 INFO L225 Difference]: With dead ends: 132710 [2020-10-12 13:14:20,500 INFO L226 Difference]: Without dead ends: 84992 [2020-10-12 13:14:20,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-12 13:14:20,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84992 states. [2020-10-12 13:14:21,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84992 to 78542. [2020-10-12 13:14:21,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78542 states. [2020-10-12 13:14:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78542 states to 78542 states and 86912 transitions. [2020-10-12 13:14:21,732 INFO L78 Accepts]: Start accepts. Automaton has 78542 states and 86912 transitions. Word has length 656 [2020-10-12 13:14:21,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:14:21,733 INFO L479 AbstractCegarLoop]: Abstraction has 78542 states and 86912 transitions. [2020-10-12 13:14:21,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:14:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand 78542 states and 86912 transitions. [2020-10-12 13:14:21,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2020-10-12 13:14:21,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:14:21,763 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:14:21,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 13:14:21,764 INFO L427 AbstractCegarLoop]: === Iteration 32 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:14:21,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:14:21,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1657709105, now seen corresponding path program 1 times [2020-10-12 13:14:21,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:14:21,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508324120] [2020-10-12 13:14:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:14:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:14:21,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:21,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:14:22,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking...