/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_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:07:39,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:07:39,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:07:39,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:07:39,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:07:39,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:07:39,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:07:39,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:07:39,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:07:39,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:07:39,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:07:39,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:07:39,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:07:39,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:07:39,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:07:39,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:07:39,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:07:39,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:07:39,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:07:39,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:07:39,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:07:39,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:07:39,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:07:39,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:07:39,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:07:39,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:07:39,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:07:39,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:07:39,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:07:39,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:07:39,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:07:40,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:07:40,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:07:40,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:07:40,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:07:40,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:07:40,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:07:40,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:07:40,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:07:40,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:07:40,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:07:40,006 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 13:07:40,046 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:07:40,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:07:40,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:07:40,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:07:40,051 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:07:40,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:07:40,052 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:07:40,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:07:40,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:07:40,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:07:40,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:07:40,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:07:40,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:07:40,053 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:07:40,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:07:40,054 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:07:40,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:07:40,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:07:40,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:07:40,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:07:40,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:07:40,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:07:40,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:07:40,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:07:40,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:07:40,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:07:40,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:07:40,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:07:40,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:07:40,061 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 13:07:40,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:07:40,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:07:40,420 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:07:40,422 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:07:40,423 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:07:40,424 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label09.c [2020-10-12 13:07:40,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ffd344fd/8c8d54cac6214039a99289b40ea3f089/FLAGd61c72e47 [2020-10-12 13:07:41,071 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:07:41,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label09.c [2020-10-12 13:07:41,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ffd344fd/8c8d54cac6214039a99289b40ea3f089/FLAGd61c72e47 [2020-10-12 13:07:41,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ffd344fd/8c8d54cac6214039a99289b40ea3f089 [2020-10-12 13:07:41,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:07:41,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:07:41,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:07:41,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:07:41,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:07:41,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:07:41" (1/1) ... [2020-10-12 13:07:41,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:41, skipping insertion in model container [2020-10-12 13:07:41,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:07:41" (1/1) ... [2020-10-12 13:07:41,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:07:41,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:07:42,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:07:42,154 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:07:42,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:07:42,406 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:07:42,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:42 WrapperNode [2020-10-12 13:07:42,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:07:42,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:07:42,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:07:42,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:07:42,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:42" (1/1) ... [2020-10-12 13:07:42,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:42" (1/1) ... [2020-10-12 13:07:42,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:42" (1/1) ... [2020-10-12 13:07:42,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:42" (1/1) ... [2020-10-12 13:07:42,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:42" (1/1) ... [2020-10-12 13:07:42,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:42" (1/1) ... [2020-10-12 13:07:42,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:42" (1/1) ... [2020-10-12 13:07:42,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:07:42,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:07:42,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:07:42,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:07:42,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:42" (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 13:07:42,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:07:42,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:07:42,665 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:07:42,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:07:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:07:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:07:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:07:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:07:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:07:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:07:42,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:07:44,508 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:07:44,509 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:07:44,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:07:44 BoogieIcfgContainer [2020-10-12 13:07:44,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:07:44,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:07:44,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:07:44,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:07:44,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:07:41" (1/3) ... [2020-10-12 13:07:44,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f97167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:07:44, skipping insertion in model container [2020-10-12 13:07:44,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:42" (2/3) ... [2020-10-12 13:07:44,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f97167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:07:44, skipping insertion in model container [2020-10-12 13:07:44,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:07:44" (3/3) ... [2020-10-12 13:07:44,539 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label09.c [2020-10-12 13:07:44,551 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:07:44,564 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:07:44,580 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:07:44,619 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:07:44,620 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:07:44,621 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:07:44,621 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:07:44,621 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:07:44,621 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:07:44,621 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:07:44,622 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:07:44,657 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-12 13:07:44,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 13:07:44,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:44,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:07:44,675 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:44,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:44,681 INFO L82 PathProgramCache]: Analyzing trace with hash -869319573, now seen corresponding path program 1 times [2020-10-12 13:07:44,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:44,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458781821] [2020-10-12 13:07:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:45,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:45,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:45,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:07:45,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:45,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-12 13:07:45,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:45,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:07:45,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:07:45,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:07:45,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:07:45,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:45,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:45,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:45,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:45,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:45,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:07:45,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:45,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:07:45,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:45,620 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 13:07:45,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458781821] [2020-10-12 13:07:45,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:07:45,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 13:07:45,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502734379] [2020-10-12 13:07:45,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:07:45,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:45,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:07:45,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:07:45,648 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2020-10-12 13:07:49,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:49,337 INFO L93 Difference]: Finished difference Result 992 states and 1777 transitions. [2020-10-12 13:07:49,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:07:49,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-12 13:07:49,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:49,385 INFO L225 Difference]: With dead ends: 992 [2020-10-12 13:07:49,385 INFO L226 Difference]: Without dead ends: 630 [2020-10-12 13:07:49,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:07:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-10-12 13:07:49,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 624. [2020-10-12 13:07:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2020-10-12 13:07:49,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 864 transitions. [2020-10-12 13:07:49,523 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 864 transitions. Word has length 72 [2020-10-12 13:07:49,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:49,528 INFO L479 AbstractCegarLoop]: Abstraction has 624 states and 864 transitions. [2020-10-12 13:07:49,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:07:49,529 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 864 transitions. [2020-10-12 13:07:49,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 13:07:49,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:49,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:07:49,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:07:49,543 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:49,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:49,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1317999062, now seen corresponding path program 1 times [2020-10-12 13:07:49,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:49,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253251904] [2020-10-12 13:07:49,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:49,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:49,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:50,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:51,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:51,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-12 13:07:51,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:07:51,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2029 [2020-10-12 13:07:51,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:51,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:07:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:07:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:07:51,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:51,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:51,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:51,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:51,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:51,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:51,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:07:51,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:51,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:07:51,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:51,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:51,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:51,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:51,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:07:51,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:51,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 13:07:51,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:07:51,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:07:51,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:51,977 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:07:51,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253251904] [2020-10-12 13:07:51,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:07:51,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:07:51,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737123223] [2020-10-12 13:07:51,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:07:51,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:51,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:07:51,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:07:51,991 INFO L87 Difference]: Start difference. First operand 624 states and 864 transitions. Second operand 7 states. [2020-10-12 13:07:54,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:54,704 INFO L93 Difference]: Finished difference Result 1881 states and 2647 transitions. [2020-10-12 13:07:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:07:54,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-10-12 13:07:54,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:54,715 INFO L225 Difference]: With dead ends: 1881 [2020-10-12 13:07:54,715 INFO L226 Difference]: Without dead ends: 1263 [2020-10-12 13:07:54,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 13:07:54,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2020-10-12 13:07:54,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1215. [2020-10-12 13:07:54,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-10-12 13:07:54,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1577 transitions. [2020-10-12 13:07:54,771 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1577 transitions. Word has length 144 [2020-10-12 13:07:54,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:54,772 INFO L479 AbstractCegarLoop]: Abstraction has 1215 states and 1577 transitions. [2020-10-12 13:07:54,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:07:54,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1577 transitions. [2020-10-12 13:07:54,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 13:07:54,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:54,777 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:07:54,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:07:54,777 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:54,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:54,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1437675110, now seen corresponding path program 1 times [2020-10-12 13:07:54,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:54,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411244620] [2020-10-12 13:07:54,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:54,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:54,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:56,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:56,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:56,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:56,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-12 13:07:56,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:07:56,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2049 [2020-10-12 13:07:56,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:56,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:07:56,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:07:56,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-12 13:07:56,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:57,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:57,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:57,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:57,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:57,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:57,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:07:57,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:57,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:57,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:57,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:07:57,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:57,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:57,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:57,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:57,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:57,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:07:57,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:07:57,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-12 13:07:57,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:07:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:07:57,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:07:57,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411244620] [2020-10-12 13:07:57,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:57,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:07:57,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151210269] [2020-10-12 13:07:57,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:07:57,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:57,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:07:57,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:07:57,506 INFO L87 Difference]: Start difference. First operand 1215 states and 1577 transitions. Second operand 6 states. [2020-10-12 13:08:00,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:00,123 INFO L93 Difference]: Finished difference Result 3431 states and 4540 transitions. [2020-10-12 13:08:00,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:08:00,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2020-10-12 13:08:00,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:00,137 INFO L225 Difference]: With dead ends: 3431 [2020-10-12 13:08:00,137 INFO L226 Difference]: Without dead ends: 2222 [2020-10-12 13:08:00,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 13:08:00,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2020-10-12 13:08:00,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2200. [2020-10-12 13:08:00,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-10-12 13:08:00,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 2733 transitions. [2020-10-12 13:08:00,236 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 2733 transitions. Word has length 152 [2020-10-12 13:08:00,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:00,236 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 2733 transitions. [2020-10-12 13:08:00,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:08:00,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 2733 transitions. [2020-10-12 13:08:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-12 13:08:00,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:00,247 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:00,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:08:00,247 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:00,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:00,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1147537460, now seen corresponding path program 1 times [2020-10-12 13:08:00,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:00,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677486898] [2020-10-12 13:08:00,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:00,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:00,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:00,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-12 13:08:00,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:00,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-12 13:08:00,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:08:00,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 13:08:00,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:08:00,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:00,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:00,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:00,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:00,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:00,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:08:00,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:00,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:08:00,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:00,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:00,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:00,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:00,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:00,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 13:08:00,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:08:00,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:08:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:08:01,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677486898] [2020-10-12 13:08:01,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:01,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:08:01,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234303883] [2020-10-12 13:08:01,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:08:01,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:01,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:08:01,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:08:01,117 INFO L87 Difference]: Start difference. First operand 2200 states and 2733 transitions. Second operand 5 states. [2020-10-12 13:08:03,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:03,137 INFO L93 Difference]: Finished difference Result 5002 states and 6456 transitions. [2020-10-12 13:08:03,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:08:03,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-12 13:08:03,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:03,154 INFO L225 Difference]: With dead ends: 5002 [2020-10-12 13:08:03,154 INFO L226 Difference]: Without dead ends: 3186 [2020-10-12 13:08:03,160 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 13:08:03,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3186 states. [2020-10-12 13:08:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3186 to 3161. [2020-10-12 13:08:03,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3161 states. [2020-10-12 13:08:03,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 3915 transitions. [2020-10-12 13:08:03,283 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 3915 transitions. Word has length 203 [2020-10-12 13:08:03,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:03,284 INFO L479 AbstractCegarLoop]: Abstraction has 3161 states and 3915 transitions. [2020-10-12 13:08:03,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:08:03,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 3915 transitions. [2020-10-12 13:08:03,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-12 13:08:03,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:03,291 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:08:03,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:08:03,291 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:03,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:03,292 INFO L82 PathProgramCache]: Analyzing trace with hash 960970052, now seen corresponding path program 1 times [2020-10-12 13:08:03,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:03,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127602950] [2020-10-12 13:08:03,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:03,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:03,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:05,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:07,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:07,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-12 13:08:07,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:08:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3748 [2020-10-12 13:08:07,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:07,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:08:07,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:08:07,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-12 13:08:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:07,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:07,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:07,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:07,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:07,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:07,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:08:07,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:07,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:08:07,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:07,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:07,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:07,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:07,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:08:07,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:07,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-12 13:08:07,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:08:07,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:07,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:08:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:07,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:07,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:07,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:08:07,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:07,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-12 13:08:07,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:08:07,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:07,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:08:07,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:08:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 116 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 13:08:08,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127602950] [2020-10-12 13:08:08,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:08,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:08:08,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392357806] [2020-10-12 13:08:08,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:08:08,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:08,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:08:08,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:08:08,219 INFO L87 Difference]: Start difference. First operand 3161 states and 3915 transitions. Second operand 8 states. [2020-10-12 13:08:10,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:10,755 INFO L93 Difference]: Finished difference Result 5457 states and 6871 transitions. [2020-10-12 13:08:10,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:08:10,762 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 261 [2020-10-12 13:08:10,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:10,779 INFO L225 Difference]: With dead ends: 5457 [2020-10-12 13:08:10,779 INFO L226 Difference]: Without dead ends: 3258 [2020-10-12 13:08:10,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:08:10,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3258 states. [2020-10-12 13:08:10,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3258 to 3208. [2020-10-12 13:08:10,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3208 states. [2020-10-12 13:08:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3986 transitions. [2020-10-12 13:08:10,913 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3986 transitions. Word has length 261 [2020-10-12 13:08:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:10,914 INFO L479 AbstractCegarLoop]: Abstraction has 3208 states and 3986 transitions. [2020-10-12 13:08:10,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:08:10,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3986 transitions. [2020-10-12 13:08:10,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-12 13:08:10,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:10,922 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:08:10,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:08:10,923 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:10,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:10,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1573818975, now seen corresponding path program 1 times [2020-10-12 13:08:10,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:10,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138485898] [2020-10-12 13:08:10,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:11,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:11,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:13,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:13,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-12 13:08:13,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:08:13,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2171 [2020-10-12 13:08:13,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:13,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-12 13:08:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 13:08:13,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:08:13,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:13,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:13,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:13,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:13,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:13,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:08:13,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:13,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:13,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:13,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:13,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:13,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:13,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:13,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:13,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:08:13,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:13,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 13:08:13,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:13,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:13,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:13,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:13,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:13,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:08:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:13,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:13,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:13,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 13:08:13,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:13,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 13:08:13,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 13:08:13,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:08:13,673 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-12 13:08:13,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138485898] [2020-10-12 13:08:13,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:13,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:08:13,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348934962] [2020-10-12 13:08:13,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:08:13,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:13,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:08:13,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:08:13,677 INFO L87 Difference]: Start difference. First operand 3208 states and 3986 transitions. Second operand 5 states. [2020-10-12 13:08:15,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:15,283 INFO L93 Difference]: Finished difference Result 5469 states and 6902 transitions. [2020-10-12 13:08:15,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:08:15,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2020-10-12 13:08:15,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:15,300 INFO L225 Difference]: With dead ends: 5469 [2020-10-12 13:08:15,300 INFO L226 Difference]: Without dead ends: 3224 [2020-10-12 13:08:15,307 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 13:08:15,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2020-10-12 13:08:15,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 3208. [2020-10-12 13:08:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3208 states. [2020-10-12 13:08:15,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3972 transitions. [2020-10-12 13:08:15,386 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3972 transitions. Word has length 262 [2020-10-12 13:08:15,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:15,387 INFO L479 AbstractCegarLoop]: Abstraction has 3208 states and 3972 transitions. [2020-10-12 13:08:15,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:08:15,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3972 transitions. [2020-10-12 13:08:15,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-12 13:08:15,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:15,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:08:15,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:08:15,396 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:15,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:15,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1291802773, now seen corresponding path program 1 times [2020-10-12 13:08:15,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:15,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500264288] [2020-10-12 13:08:15,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:16,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:16,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-12 13:08:16,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:16,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1059 [2020-10-12 13:08:16,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:16,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:16,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-12 13:08:16,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 13:08:16,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:16,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:16,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:16,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:16,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:16,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:16,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:08:16,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:16,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:16,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:16,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:16,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:16,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:16,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:08:16,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:16,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 13:08:16,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:16,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:16,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:08:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:16,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:16,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:16,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 13:08:16,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:16,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 13:08:16,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:16,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:16,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:08:16,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 13:08:17,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500264288] [2020-10-12 13:08:17,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:17,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:08:17,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71997834] [2020-10-12 13:08:17,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:08:17,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:17,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:08:17,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:08:17,099 INFO L87 Difference]: Start difference. First operand 3208 states and 3972 transitions. Second operand 5 states. [2020-10-12 13:08:19,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:19,148 INFO L93 Difference]: Finished difference Result 5475 states and 6882 transitions. [2020-10-12 13:08:19,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:08:19,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2020-10-12 13:08:19,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:19,165 INFO L225 Difference]: With dead ends: 5475 [2020-10-12 13:08:19,165 INFO L226 Difference]: Without dead ends: 3224 [2020-10-12 13:08:19,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 13:08:19,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2020-10-12 13:08:19,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 3208. [2020-10-12 13:08:19,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3208 states. [2020-10-12 13:08:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3966 transitions. [2020-10-12 13:08:19,259 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3966 transitions. Word has length 272 [2020-10-12 13:08:19,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:19,260 INFO L479 AbstractCegarLoop]: Abstraction has 3208 states and 3966 transitions. [2020-10-12 13:08:19,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:08:19,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3966 transitions. [2020-10-12 13:08:19,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-12 13:08:19,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:19,267 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 13:08:19,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:08:19,267 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:19,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:19,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1334120028, now seen corresponding path program 1 times [2020-10-12 13:08:19,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:19,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418652829] [2020-10-12 13:08:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:19,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:19,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:19,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:21,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:21,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-12 13:08:21,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:08:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1965 [2020-10-12 13:08:21,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:08:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:08:21,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:08:21,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:21,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:21,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:21,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:21,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:21,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:08:21,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:21,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:21,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:21,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:21,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:21,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:21,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:21,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:21,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:21,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:21,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 13:08:21,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:21,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:21,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:08:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:21,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:08:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:21,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:21,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:21,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 13:08:21,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:21,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 13:08:21,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:21,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:08:21,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:08:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:08:21,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418652829] [2020-10-12 13:08:21,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:21,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:08:21,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275671139] [2020-10-12 13:08:21,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:08:21,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:21,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:08:21,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:08:21,871 INFO L87 Difference]: Start difference. First operand 3208 states and 3966 transitions. Second operand 7 states. [2020-10-12 13:08:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:25,467 INFO L93 Difference]: Finished difference Result 7857 states and 10073 transitions. [2020-10-12 13:08:25,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:08:25,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-12 13:08:25,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:25,488 INFO L225 Difference]: With dead ends: 7857 [2020-10-12 13:08:25,488 INFO L226 Difference]: Without dead ends: 5033 [2020-10-12 13:08:25,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 13:08:25,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5033 states. [2020-10-12 13:08:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5033 to 5003. [2020-10-12 13:08:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5003 states. [2020-10-12 13:08:25,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5003 states to 5003 states and 6125 transitions. [2020-10-12 13:08:25,600 INFO L78 Accepts]: Start accepts. Automaton has 5003 states and 6125 transitions. Word has length 272 [2020-10-12 13:08:25,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:25,600 INFO L479 AbstractCegarLoop]: Abstraction has 5003 states and 6125 transitions. [2020-10-12 13:08:25,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:08:25,601 INFO L276 IsEmpty]: Start isEmpty. Operand 5003 states and 6125 transitions. [2020-10-12 13:08:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-12 13:08:25,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:25,609 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:08:25,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:08:25,609 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:25,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:25,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1248211595, now seen corresponding path program 1 times [2020-10-12 13:08:25,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:25,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494890744] [2020-10-12 13:08:25,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:25,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:25,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:25,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:27,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:30,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:30,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 13:08:30,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:08:30,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 13:08:30,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:08:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:08:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-12 13:08:30,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:30,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:30,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:30,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:30,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:30,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:30,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:08:30,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:30,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:30,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:30,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:08:30,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:30,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:30,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:30,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:30,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:30,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:30,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:30,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 13:08:30,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:30,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:30,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:30,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 13:08:30,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:31,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:08:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:31,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:31,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:31,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:08:31,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:31,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 13:08:31,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 13:08:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:31,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:08:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 130 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:08:31,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494890744] [2020-10-12 13:08:31,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:31,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:08:31,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937948377] [2020-10-12 13:08:31,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:08:31,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:31,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:08:31,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:08:31,545 INFO L87 Difference]: Start difference. First operand 5003 states and 6125 transitions. Second operand 7 states. [2020-10-12 13:08:33,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:33,906 INFO L93 Difference]: Finished difference Result 11161 states and 14088 transitions. [2020-10-12 13:08:33,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:08:33,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-12 13:08:33,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:33,945 INFO L225 Difference]: With dead ends: 11161 [2020-10-12 13:08:33,945 INFO L226 Difference]: Without dead ends: 6548 [2020-10-12 13:08:33,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:08:33,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2020-10-12 13:08:34,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 6538. [2020-10-12 13:08:34,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6538 states. [2020-10-12 13:08:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6538 states to 6538 states and 7934 transitions. [2020-10-12 13:08:34,099 INFO L78 Accepts]: Start accepts. Automaton has 6538 states and 7934 transitions. Word has length 275 [2020-10-12 13:08:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:34,100 INFO L479 AbstractCegarLoop]: Abstraction has 6538 states and 7934 transitions. [2020-10-12 13:08:34,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:08:34,100 INFO L276 IsEmpty]: Start isEmpty. Operand 6538 states and 7934 transitions. [2020-10-12 13:08:34,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-12 13:08:34,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:34,109 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:08:34,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:08:34,109 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:34,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:34,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1948428820, now seen corresponding path program 1 times [2020-10-12 13:08:34,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:34,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681845688] [2020-10-12 13:08:34,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:34,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:34,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:34,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:36,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:36,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-12 13:08:36,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:08:36,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2209 [2020-10-12 13:08:36,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:36,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:08:36,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-12 13:08:36,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 13:08:36,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:36,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:36,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:36,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:36,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:36,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:36,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:08:36,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:36,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:36,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:36,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:36,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:36,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:36,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:36,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 13:08:36,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:36,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:36,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:36,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:36,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:36,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:08:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:36,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:36,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:36,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:08:36,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:36,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 13:08:36,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 13:08:36,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 13:08:37,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681845688] [2020-10-12 13:08:37,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:37,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:08:37,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841682904] [2020-10-12 13:08:37,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:08:37,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:37,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:08:37,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:08:37,094 INFO L87 Difference]: Start difference. First operand 6538 states and 7934 transitions. Second operand 8 states. [2020-10-12 13:08:39,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:39,750 INFO L93 Difference]: Finished difference Result 11708 states and 14357 transitions. [2020-10-12 13:08:39,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 13:08:39,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 276 [2020-10-12 13:08:39,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:39,777 INFO L225 Difference]: With dead ends: 11708 [2020-10-12 13:08:39,777 INFO L226 Difference]: Without dead ends: 6542 [2020-10-12 13:08:39,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:08:39,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2020-10-12 13:08:39,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 6534. [2020-10-12 13:08:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6534 states. [2020-10-12 13:08:39,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6534 states to 6534 states and 7878 transitions. [2020-10-12 13:08:39,918 INFO L78 Accepts]: Start accepts. Automaton has 6534 states and 7878 transitions. Word has length 276 [2020-10-12 13:08:39,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:39,918 INFO L479 AbstractCegarLoop]: Abstraction has 6534 states and 7878 transitions. [2020-10-12 13:08:39,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:08:39,919 INFO L276 IsEmpty]: Start isEmpty. Operand 6534 states and 7878 transitions. [2020-10-12 13:08:39,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-12 13:08:39,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:39,929 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 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 13:08:39,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:08:39,929 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:39,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:39,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1924275604, now seen corresponding path program 1 times [2020-10-12 13:08:39,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:39,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949735305] [2020-10-12 13:08:39,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:40,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:40,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:40,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:41,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:41,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-12 13:08:41,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:08:41,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1680 [2020-10-12 13:08:41,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:41,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:41,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-12 13:08:41,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 13:08:41,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:41,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:41,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:41,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:41,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:41,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:41,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:08:41,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:41,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:41,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:41,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:41,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:41,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:41,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:41,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:41,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:08:41,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:41,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 13:08:41,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:41,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:41,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:08:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:41,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:42,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:42,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 13:08:42,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:42,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 13:08:42,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:42,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:42,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:42,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 13:08:42,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:08:42,216 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-12 13:08:42,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949735305] [2020-10-12 13:08:42,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:42,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:08:42,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134625280] [2020-10-12 13:08:42,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:08:42,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:42,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:08:42,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:08:42,218 INFO L87 Difference]: Start difference. First operand 6534 states and 7878 transitions. Second operand 5 states. [2020-10-12 13:08:43,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:43,684 INFO L93 Difference]: Finished difference Result 11538 states and 14011 transitions. [2020-10-12 13:08:43,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:08:43,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 289 [2020-10-12 13:08:43,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:43,711 INFO L225 Difference]: With dead ends: 11538 [2020-10-12 13:08:43,711 INFO L226 Difference]: Without dead ends: 6542 [2020-10-12 13:08:43,726 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 13:08:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2020-10-12 13:08:43,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 6534. [2020-10-12 13:08:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6534 states. [2020-10-12 13:08:43,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6534 states to 6534 states and 7858 transitions. [2020-10-12 13:08:43,838 INFO L78 Accepts]: Start accepts. Automaton has 6534 states and 7858 transitions. Word has length 289 [2020-10-12 13:08:43,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:43,839 INFO L479 AbstractCegarLoop]: Abstraction has 6534 states and 7858 transitions. [2020-10-12 13:08:43,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:08:43,839 INFO L276 IsEmpty]: Start isEmpty. Operand 6534 states and 7858 transitions. [2020-10-12 13:08:43,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-12 13:08:43,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:43,848 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 13:08:43,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 13:08:43,848 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:43,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:43,849 INFO L82 PathProgramCache]: Analyzing trace with hash -425691512, now seen corresponding path program 1 times [2020-10-12 13:08:43,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:43,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393255608] [2020-10-12 13:08:43,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:43,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:44,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:44,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:44,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:44,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-12 13:08:44,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:08:44,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 997 [2020-10-12 13:08:44,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:44,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:08:44,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:08:44,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-12 13:08:44,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:45,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:45,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:45,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:45,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:45,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:08:45,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:45,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:45,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:45,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:45,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:45,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:45,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:45,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:45,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:45,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 13:08:45,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:45,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:45,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:45,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:08:45,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:45,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:08:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:45,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:45,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:45,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:45,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 13:08:45,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:45,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 13:08:45,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:45,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:45,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:45,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 13:08:45,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:45,498 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 155 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:08:45,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393255608] [2020-10-12 13:08:45,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:45,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:08:45,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115400627] [2020-10-12 13:08:45,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:08:45,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:45,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:08:45,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:08:45,500 INFO L87 Difference]: Start difference. First operand 6534 states and 7858 transitions. Second operand 7 states. [2020-10-12 13:08:48,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:48,024 INFO L93 Difference]: Finished difference Result 11548 states and 14073 transitions. [2020-10-12 13:08:48,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:08:48,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-12 13:08:48,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:48,044 INFO L225 Difference]: With dead ends: 11548 [2020-10-12 13:08:48,044 INFO L226 Difference]: Without dead ends: 6572 [2020-10-12 13:08:48,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:08:48,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2020-10-12 13:08:48,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 6532. [2020-10-12 13:08:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6532 states. [2020-10-12 13:08:48,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 7632 transitions. [2020-10-12 13:08:48,186 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 7632 transitions. Word has length 298 [2020-10-12 13:08:48,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:48,186 INFO L479 AbstractCegarLoop]: Abstraction has 6532 states and 7632 transitions. [2020-10-12 13:08:48,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:08:48,187 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 7632 transitions. [2020-10-12 13:08:48,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-12 13:08:48,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:48,201 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:08:48,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 13:08:48,202 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:48,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:48,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1337464020, now seen corresponding path program 1 times [2020-10-12 13:08:48,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:48,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452879412] [2020-10-12 13:08:48,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:48,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:48,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:49,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:49,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-12 13:08:49,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:49,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1110 [2020-10-12 13:08:49,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:49,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:49,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:08:49,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 13:08:49,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:49,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:49,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:49,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:49,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:49,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:49,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:08:49,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:49,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:49,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:49,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:49,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:49,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 13:08:49,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:08:49,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:49,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:08:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:49,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:49,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:49,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:08:49,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:49,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-12 13:08:49,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 13:08:49,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:49,956 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 236 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:08:49,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452879412] [2020-10-12 13:08:49,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:49,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:08:49,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881940646] [2020-10-12 13:08:49,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:08:49,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:49,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:08:49,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:08:49,958 INFO L87 Difference]: Start difference. First operand 6532 states and 7632 transitions. Second operand 7 states. [2020-10-12 13:08:52,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:52,307 INFO L93 Difference]: Finished difference Result 12137 states and 14260 transitions. [2020-10-12 13:08:52,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:08:52,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-10-12 13:08:52,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:52,333 INFO L225 Difference]: With dead ends: 12137 [2020-10-12 13:08:52,333 INFO L226 Difference]: Without dead ends: 7163 [2020-10-12 13:08:52,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:08:52,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7163 states. [2020-10-12 13:08:52,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7163 to 7124. [2020-10-12 13:08:52,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7124 states. [2020-10-12 13:08:52,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 8314 transitions. [2020-10-12 13:08:52,463 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 8314 transitions. Word has length 312 [2020-10-12 13:08:52,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:52,464 INFO L479 AbstractCegarLoop]: Abstraction has 7124 states and 8314 transitions. [2020-10-12 13:08:52,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:08:52,464 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 8314 transitions. [2020-10-12 13:08:52,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-12 13:08:52,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:52,476 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:08:52,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 13:08:52,476 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:52,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:52,477 INFO L82 PathProgramCache]: Analyzing trace with hash 587236864, now seen corresponding path program 1 times [2020-10-12 13:08:52,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:52,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081622253] [2020-10-12 13:08:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:52,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:53,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:53,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-12 13:08:53,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:53,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-10-12 13:08:53,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-12 13:08:53,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:08:53,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:53,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:53,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:53,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:53,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:53,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:53,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:08:53,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:53,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:53,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:53,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:53,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:53,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:53,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:53,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 13:08:53,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:53,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 13:08:53,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:53,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:53,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-12 13:08:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:53,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:53,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:53,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:08:53,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:53,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 13:08:53,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:53,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:53,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:53,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 13:08:53,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:53,620 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 13:08:53,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081622253] [2020-10-12 13:08:53,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:53,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:08:53,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39954771] [2020-10-12 13:08:53,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:08:53,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:53,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:08:53,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:08:53,625 INFO L87 Difference]: Start difference. First operand 7124 states and 8314 transitions. Second operand 5 states. [2020-10-12 13:08:55,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:55,741 INFO L93 Difference]: Finished difference Result 8276 states and 9698 transitions. [2020-10-12 13:08:55,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:08:55,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-12 13:08:55,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:55,778 INFO L225 Difference]: With dead ends: 8276 [2020-10-12 13:08:55,778 INFO L226 Difference]: Without dead ends: 8274 [2020-10-12 13:08:55,783 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 13:08:55,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8274 states. [2020-10-12 13:08:55,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8274 to 7886. [2020-10-12 13:08:55,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7886 states. [2020-10-12 13:08:55,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7886 states to 7886 states and 9250 transitions. [2020-10-12 13:08:55,918 INFO L78 Accepts]: Start accepts. Automaton has 7886 states and 9250 transitions. Word has length 315 [2020-10-12 13:08:55,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:55,919 INFO L479 AbstractCegarLoop]: Abstraction has 7886 states and 9250 transitions. [2020-10-12 13:08:55,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:08:55,919 INFO L276 IsEmpty]: Start isEmpty. Operand 7886 states and 9250 transitions. [2020-10-12 13:08:55,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-12 13:08:55,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:55,934 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:08:55,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 13:08:55,935 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:55,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:55,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1258340749, now seen corresponding path program 1 times [2020-10-12 13:08:55,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:55,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955880038] [2020-10-12 13:08:55,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:56,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:56,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:56,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-12 13:08:56,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-10-12 13:08:56,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-12 13:08:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 13:08:56,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:56,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:56,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:56,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:56,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:56,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:56,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:08:56,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:56,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:56,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:56,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:56,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:56,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:56,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:56,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:56,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:08:56,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:56,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:56,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:56,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:56,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:56,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:08:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:56,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:56,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:56,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 13:08:56,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:56,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 13:08:56,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:56,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:56,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:56,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-12 13:08:56,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-12 13:08:57,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955880038] [2020-10-12 13:08:57,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:57,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:08:57,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405612515] [2020-10-12 13:08:57,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:08:57,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:57,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:08:57,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:08:57,008 INFO L87 Difference]: Start difference. First operand 7886 states and 9250 transitions. Second operand 5 states. [2020-10-12 13:08:58,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:58,776 INFO L93 Difference]: Finished difference Result 14241 states and 16775 transitions. [2020-10-12 13:08:58,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:08:58,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2020-10-12 13:08:58,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:58,796 INFO L225 Difference]: With dead ends: 14241 [2020-10-12 13:08:58,796 INFO L226 Difference]: Without dead ends: 7896 [2020-10-12 13:08:58,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 13:08:58,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7896 states. [2020-10-12 13:08:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7896 to 7886. [2020-10-12 13:08:58,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7886 states. [2020-10-12 13:08:58,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7886 states to 7886 states and 9244 transitions. [2020-10-12 13:08:58,931 INFO L78 Accepts]: Start accepts. Automaton has 7886 states and 9244 transitions. Word has length 342 [2020-10-12 13:08:58,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:58,931 INFO L479 AbstractCegarLoop]: Abstraction has 7886 states and 9244 transitions. [2020-10-12 13:08:58,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:08:58,932 INFO L276 IsEmpty]: Start isEmpty. Operand 7886 states and 9244 transitions. [2020-10-12 13:08:58,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-12 13:08:58,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:58,945 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 13:08:58,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 13:08:58,946 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:58,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:58,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1072135770, now seen corresponding path program 1 times [2020-10-12 13:08:58,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:58,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382882768] [2020-10-12 13:08:58,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:59,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:59,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:59,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:59,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:01,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:02,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:04,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:04,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-12 13:09:04,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 13:09:04,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 13:09:04,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:04,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 13:09:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:09:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-12 13:09:04,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:04,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:04,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:04,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:04,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:04,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:04,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:09:04,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:09:04,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:09:04,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:04,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:04,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:04,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:09:04,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:04,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 13:09:04,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:04,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:09:04,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:04,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:09:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:04,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:04,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:04,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:09:04,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:04,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-12 13:09:04,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:04,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:09:04,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:04,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:09:04,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:09:04,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-12 13:09:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:04,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:04,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:05,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:05,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:09:05,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:09:05,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-12 13:09:05,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:05,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:09:05,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:05,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:09:05,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 199 proven. 157 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-12 13:09:06,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382882768] [2020-10-12 13:09:06,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:06,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 13:09:06,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495862892] [2020-10-12 13:09:06,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 13:09:06,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:06,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 13:09:06,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:09:06,045 INFO L87 Difference]: Start difference. First operand 7886 states and 9244 transitions. Second operand 13 states. [2020-10-12 13:09:07,007 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-12 13:09:07,216 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-12 13:09:07,436 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-12 13:09:07,984 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-10-12 13:09:08,560 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2020-10-12 13:09:08,747 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-10-12 13:09:08,978 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2020-10-12 13:09:09,242 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2020-10-12 13:09:10,333 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-12 13:09:12,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:12,050 INFO L93 Difference]: Finished difference Result 14395 states and 16943 transitions. [2020-10-12 13:09:12,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 13:09:12,051 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 362 [2020-10-12 13:09:12,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:12,071 INFO L225 Difference]: With dead ends: 14395 [2020-10-12 13:09:12,072 INFO L226 Difference]: Without dead ends: 7935 [2020-10-12 13:09:12,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=241, Invalid=815, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 13:09:12,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7935 states. [2020-10-12 13:09:12,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7935 to 7892. [2020-10-12 13:09:12,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7892 states. [2020-10-12 13:09:12,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7892 states to 7892 states and 9245 transitions. [2020-10-12 13:09:12,204 INFO L78 Accepts]: Start accepts. Automaton has 7892 states and 9245 transitions. Word has length 362 [2020-10-12 13:09:12,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:12,205 INFO L479 AbstractCegarLoop]: Abstraction has 7892 states and 9245 transitions. [2020-10-12 13:09:12,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 13:09:12,205 INFO L276 IsEmpty]: Start isEmpty. Operand 7892 states and 9245 transitions. [2020-10-12 13:09:12,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-12 13:09:12,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:12,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:09:12,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 13:09:12,220 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:12,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:12,221 INFO L82 PathProgramCache]: Analyzing trace with hash -927748320, now seen corresponding path program 1 times [2020-10-12 13:09:12,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:12,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297543357] [2020-10-12 13:09:12,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:12,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:12,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:12,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:12,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:12,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-12 13:09:12,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:09:12,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-10-12 13:09:12,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:12,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:12,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 300 [2020-10-12 13:09:12,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:09:12,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:12,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:12,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:12,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:12,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:12,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:12,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:09:12,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:12,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:12,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:12,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:12,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:12,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:12,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:09:12,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:12,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 13:09:12,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:12,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:12,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:12,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:12,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:13,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:09:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:13,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:13,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 13:09:13,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:13,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 13:09:13,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-12 13:09:13,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:09:13,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-12 13:09:13,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297543357] [2020-10-12 13:09:13,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:09:13,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 13:09:13,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500944518] [2020-10-12 13:09:13,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:09:13,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:13,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:09:13,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:09:13,218 INFO L87 Difference]: Start difference. First operand 7892 states and 9245 transitions. Second operand 5 states. [2020-10-12 13:09:14,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:14,491 INFO L93 Difference]: Finished difference Result 14226 states and 16727 transitions. [2020-10-12 13:09:14,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:09:14,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 362 [2020-10-12 13:09:14,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:14,511 INFO L225 Difference]: With dead ends: 14226 [2020-10-12 13:09:14,511 INFO L226 Difference]: Without dead ends: 7892 [2020-10-12 13:09:14,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:09:14,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7892 states. [2020-10-12 13:09:14,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7892 to 7881. [2020-10-12 13:09:14,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7881 states. [2020-10-12 13:09:14,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7881 states to 7881 states and 9221 transitions. [2020-10-12 13:09:14,656 INFO L78 Accepts]: Start accepts. Automaton has 7881 states and 9221 transitions. Word has length 362 [2020-10-12 13:09:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:14,657 INFO L479 AbstractCegarLoop]: Abstraction has 7881 states and 9221 transitions. [2020-10-12 13:09:14,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:09:14,657 INFO L276 IsEmpty]: Start isEmpty. Operand 7881 states and 9221 transitions. [2020-10-12 13:09:14,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-12 13:09:14,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:14,669 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:09:14,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 13:09:14,670 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:14,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:14,670 INFO L82 PathProgramCache]: Analyzing trace with hash 965245434, now seen corresponding path program 1 times [2020-10-12 13:09:14,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:14,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526376425] [2020-10-12 13:09:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:14,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:14,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:15,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:16,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:16,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-12 13:09:16,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:09:16,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1392 [2020-10-12 13:09:16,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:16,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:16,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 302 [2020-10-12 13:09:16,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:09:16,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:16,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:16,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:16,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:16,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:16,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:16,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:09:16,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:16,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:16,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:16,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:16,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:16,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:16,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:16,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:16,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:09:16,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:16,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 13:09:16,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:16,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:16,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:16,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:16,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:16,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:09:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:16,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:16,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:16,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-12 13:09:16,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:16,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 13:09:16,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 13:09:16,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:16,520 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-12 13:09:16,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526376425] [2020-10-12 13:09:16,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:16,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:09:16,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216001330] [2020-10-12 13:09:16,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:09:16,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:16,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:09:16,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:09:16,522 INFO L87 Difference]: Start difference. First operand 7881 states and 9221 transitions. Second operand 5 states. [2020-10-12 13:09:19,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:19,040 INFO L93 Difference]: Finished difference Result 17117 states and 20375 transitions. [2020-10-12 13:09:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:09:19,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 362 [2020-10-12 13:09:19,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:19,064 INFO L225 Difference]: With dead ends: 17117 [2020-10-12 13:09:19,064 INFO L226 Difference]: Without dead ends: 9624 [2020-10-12 13:09:19,076 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 13:09:19,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9624 states. [2020-10-12 13:09:19,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9624 to 9413. [2020-10-12 13:09:19,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9413 states. [2020-10-12 13:09:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9413 states to 9413 states and 11045 transitions. [2020-10-12 13:09:19,206 INFO L78 Accepts]: Start accepts. Automaton has 9413 states and 11045 transitions. Word has length 362 [2020-10-12 13:09:19,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:19,207 INFO L479 AbstractCegarLoop]: Abstraction has 9413 states and 11045 transitions. [2020-10-12 13:09:19,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:09:19,207 INFO L276 IsEmpty]: Start isEmpty. Operand 9413 states and 11045 transitions. [2020-10-12 13:09:19,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-12 13:09:19,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:19,218 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:09:19,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 13:09:19,218 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:19,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:19,219 INFO L82 PathProgramCache]: Analyzing trace with hash 204717337, now seen corresponding path program 1 times [2020-10-12 13:09:19,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:19,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772322889] [2020-10-12 13:09:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:19,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:19,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:19,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:21,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:21,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-10-12 13:09:21,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:09:21,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1879 [2020-10-12 13:09:21,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:09:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:09:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 319 [2020-10-12 13:09:21,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:21,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:21,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:21,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:21,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:21,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:09:21,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:21,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:09:21,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:21,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:21,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:21,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:21,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 13:09:21,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:21,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 13:09:21,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 13:09:21,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:21,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 13:09:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:21,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:21,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:21,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 13:09:21,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:21,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-12 13:09:21,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:09:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:21,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-12 13:09:21,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:09:22,308 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 107 proven. 26 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-12 13:09:22,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772322889] [2020-10-12 13:09:22,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:22,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:09:22,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471301452] [2020-10-12 13:09:22,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:09:22,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:22,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:09:22,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:09:22,316 INFO L87 Difference]: Start difference. First operand 9413 states and 11045 transitions. Second operand 8 states. [2020-10-12 13:09:25,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:25,945 INFO L93 Difference]: Finished difference Result 20192 states and 23785 transitions. [2020-10-12 13:09:25,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:09:25,946 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 363 [2020-10-12 13:09:25,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:25,979 INFO L225 Difference]: With dead ends: 20192 [2020-10-12 13:09:25,979 INFO L226 Difference]: Without dead ends: 12507 [2020-10-12 13:09:25,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:09:26,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12507 states. [2020-10-12 13:09:26,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12507 to 11733. [2020-10-12 13:09:26,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11733 states. [2020-10-12 13:09:26,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11733 states to 11733 states and 13757 transitions. [2020-10-12 13:09:26,198 INFO L78 Accepts]: Start accepts. Automaton has 11733 states and 13757 transitions. Word has length 363 [2020-10-12 13:09:26,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:26,198 INFO L479 AbstractCegarLoop]: Abstraction has 11733 states and 13757 transitions. [2020-10-12 13:09:26,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:09:26,199 INFO L276 IsEmpty]: Start isEmpty. Operand 11733 states and 13757 transitions. [2020-10-12 13:09:26,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-12 13:09:26,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:26,212 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:09:26,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 13:09:26,212 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:26,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:26,213 INFO L82 PathProgramCache]: Analyzing trace with hash -38318785, now seen corresponding path program 1 times [2020-10-12 13:09:26,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:26,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116340635] [2020-10-12 13:09:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:26,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:26,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:26,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:26,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:28,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:31,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:31,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-12 13:09:31,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:09:31,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 13:09:31,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:31,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:09:31,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 238 [2020-10-12 13:09:31,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-12 13:09:31,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:31,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:31,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:31,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:31,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:31,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:31,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:09:31,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:31,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:31,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:31,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:31,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:31,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:31,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:31,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:31,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:09:31,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:31,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 13:09:31,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:31,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:31,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:09:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:31,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:31,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:31,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:09:31,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:31,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 13:09:31,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 13:09:31,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:31,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-12 13:09:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:31,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:31,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:09:31,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:31,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 13:09:31,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:31,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:09:31,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 286 proven. 66 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-12 13:09:31,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116340635] [2020-10-12 13:09:31,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:31,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:09:31,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915270621] [2020-10-12 13:09:31,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:09:31,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:31,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:09:31,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:09:31,913 INFO L87 Difference]: Start difference. First operand 11733 states and 13757 transitions. Second operand 6 states. [2020-10-12 13:09:35,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:35,094 INFO L93 Difference]: Finished difference Result 26188 states and 31252 transitions. [2020-10-12 13:09:35,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:09:35,095 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 378 [2020-10-12 13:09:35,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:35,124 INFO L225 Difference]: With dead ends: 26188 [2020-10-12 13:09:35,125 INFO L226 Difference]: Without dead ends: 14845 [2020-10-12 13:09:35,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:09:35,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14845 states. [2020-10-12 13:09:35,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14845 to 14813. [2020-10-12 13:09:35,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14813 states. [2020-10-12 13:09:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14813 states to 14813 states and 17547 transitions. [2020-10-12 13:09:35,376 INFO L78 Accepts]: Start accepts. Automaton has 14813 states and 17547 transitions. Word has length 378 [2020-10-12 13:09:35,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:35,377 INFO L479 AbstractCegarLoop]: Abstraction has 14813 states and 17547 transitions. [2020-10-12 13:09:35,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:09:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 14813 states and 17547 transitions. [2020-10-12 13:09:35,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-12 13:09:35,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:35,392 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2020-10-12 13:09:35,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 13:09:35,392 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:35,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:35,393 INFO L82 PathProgramCache]: Analyzing trace with hash -891557112, now seen corresponding path program 1 times [2020-10-12 13:09:35,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:35,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265989168] [2020-10-12 13:09:35,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:35,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:35,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:36,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:36,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-12 13:09:36,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:09:36,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1134 [2020-10-12 13:09:36,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:09:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:09:36,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:36,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:36,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:36,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:36,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:36,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:36,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:09:36,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:36,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:36,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:36,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:36,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:09:36,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:36,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:36,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:36,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:09:36,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 13:09:36,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:09:36,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:09:36,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:09:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:36,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:37,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:37,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:09:37,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:37,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-12 13:09:37,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:37,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:37,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:37,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 13:09:37,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:37,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-12 13:09:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:37,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:37,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:37,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 13:09:37,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:37,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:09:37,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 13:09:37,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:37,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 303 proven. 80 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 13:09:37,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265989168] [2020-10-12 13:09:37,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:37,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:09:37,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36053439] [2020-10-12 13:09:37,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:09:37,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:37,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:09:37,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:09:37,298 INFO L87 Difference]: Start difference. First operand 14813 states and 17547 transitions. Second operand 7 states. [2020-10-12 13:09:40,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:40,543 INFO L93 Difference]: Finished difference Result 35182 states and 41818 transitions. [2020-10-12 13:09:40,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:09:40,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 391 [2020-10-12 13:09:40,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:40,577 INFO L225 Difference]: With dead ends: 35182 [2020-10-12 13:09:40,577 INFO L226 Difference]: Without dead ends: 20759 [2020-10-12 13:09:40,597 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 13:09:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20759 states. [2020-10-12 13:09:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20759 to 20707. [2020-10-12 13:09:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20707 states. [2020-10-12 13:09:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20707 states to 20707 states and 24316 transitions. [2020-10-12 13:09:40,920 INFO L78 Accepts]: Start accepts. Automaton has 20707 states and 24316 transitions. Word has length 391 [2020-10-12 13:09:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:40,920 INFO L479 AbstractCegarLoop]: Abstraction has 20707 states and 24316 transitions. [2020-10-12 13:09:40,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:09:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 20707 states and 24316 transitions. [2020-10-12 13:09:40,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-12 13:09:40,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:40,933 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:09:40,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 13:09:40,934 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:40,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:40,934 INFO L82 PathProgramCache]: Analyzing trace with hash 196616119, now seen corresponding path program 1 times [2020-10-12 13:09:40,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:40,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505111111] [2020-10-12 13:09:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:41,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:41,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:41,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:43,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:43,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 436 [2020-10-12 13:09:43,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:09:43,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2284 [2020-10-12 13:09:43,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:43,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 13:09:43,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:09:43,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 430 [2020-10-12 13:09:43,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:43,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:43,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:43,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:43,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:43,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:43,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:09:43,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:09:43,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:43,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:43,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:43,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:43,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:09:43,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:43,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 13:09:43,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:09:43,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:43,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 13:09:43,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:43,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:09:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:43,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:43,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:43,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 13:09:43,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:43,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 13:09:43,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-12 13:09:43,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:43,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-12 13:09:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:43,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:43,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:43,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 13:09:43,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:43,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 13:09:43,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:43,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:09:43,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:43,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 13:09:43,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:44,043 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 209 proven. 196 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 13:09:44,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505111111] [2020-10-12 13:09:44,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:44,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:09:44,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276279507] [2020-10-12 13:09:44,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 13:09:44,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:44,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 13:09:44,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:09:44,046 INFO L87 Difference]: Start difference. First operand 20707 states and 24316 transitions. Second operand 11 states. [2020-10-12 13:09:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:50,068 INFO L93 Difference]: Finished difference Result 54258 states and 66257 transitions. [2020-10-12 13:09:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 13:09:50,070 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 422 [2020-10-12 13:09:50,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:50,187 INFO L225 Difference]: With dead ends: 54258 [2020-10-12 13:09:50,187 INFO L226 Difference]: Without dead ends: 36827 [2020-10-12 13:09:50,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2020-10-12 13:09:50,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36827 states. [2020-10-12 13:09:50,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36827 to 34003. [2020-10-12 13:09:50,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34003 states. [2020-10-12 13:09:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34003 states to 34003 states and 40237 transitions. [2020-10-12 13:09:50,806 INFO L78 Accepts]: Start accepts. Automaton has 34003 states and 40237 transitions. Word has length 422 [2020-10-12 13:09:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:50,806 INFO L479 AbstractCegarLoop]: Abstraction has 34003 states and 40237 transitions. [2020-10-12 13:09:50,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 13:09:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 34003 states and 40237 transitions. [2020-10-12 13:09:50,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-12 13:09:50,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:50,822 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-12 13:09:50,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 13:09:50,822 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:50,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:50,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1145916170, now seen corresponding path program 1 times [2020-10-12 13:09:50,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:50,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283499806] [2020-10-12 13:09:50,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:51,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:51,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:55,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:55,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 455 [2020-10-12 13:09:55,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:09:55,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 13:09:55,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:55,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:09:55,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 237 [2020-10-12 13:09:55,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-12 13:09:55,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:56,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:56,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:56,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:56,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:56,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:56,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:09:56,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:56,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:56,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:56,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:56,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:56,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:56,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:09:56,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:56,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 13:09:56,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:56,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:56,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:56,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:09:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:56,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:56,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:56,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:09:56,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:56,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 13:09:56,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:56,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:56,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:56,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 13:09:56,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:56,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-12 13:09:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:56,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:56,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:56,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 13:09:56,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-12 13:09:56,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:09:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-12 13:09:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 405 proven. 16 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-12 13:09:56,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283499806] [2020-10-12 13:09:56,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:56,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:09:56,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190618019] [2020-10-12 13:09:56,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:09:56,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:56,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:09:56,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:09:56,730 INFO L87 Difference]: Start difference. First operand 34003 states and 40237 transitions. Second operand 8 states. [2020-10-12 13:10:00,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:00,196 INFO L93 Difference]: Finished difference Result 64997 states and 76941 transitions. [2020-10-12 13:10:00,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:10:00,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 441 [2020-10-12 13:10:00,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:00,270 INFO L225 Difference]: With dead ends: 64997 [2020-10-12 13:10:00,270 INFO L226 Difference]: Without dead ends: 34236 [2020-10-12 13:10:00,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:10:00,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34236 states. [2020-10-12 13:10:00,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34236 to 34155. [2020-10-12 13:10:00,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34155 states. [2020-10-12 13:10:00,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34155 states to 34155 states and 39993 transitions. [2020-10-12 13:10:00,807 INFO L78 Accepts]: Start accepts. Automaton has 34155 states and 39993 transitions. Word has length 441 [2020-10-12 13:10:00,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:00,808 INFO L479 AbstractCegarLoop]: Abstraction has 34155 states and 39993 transitions. [2020-10-12 13:10:00,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:10:00,808 INFO L276 IsEmpty]: Start isEmpty. Operand 34155 states and 39993 transitions. [2020-10-12 13:10:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-10-12 13:10:00,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:00,825 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:10:00,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 13:10:00,826 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:00,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:00,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1194964801, now seen corresponding path program 1 times [2020-10-12 13:10:00,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:00,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100129989] [2020-10-12 13:10:00,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:00,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:01,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:01,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:02,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:02,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 472 [2020-10-12 13:10:02,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:10:02,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1843 [2020-10-12 13:10:02,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:10:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-12 13:10:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:10:02,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:02,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:02,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:02,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:02,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:02,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:02,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:10:02,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:02,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:02,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:02,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:02,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:02,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:02,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:02,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:10:02,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:02,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 13:10:02,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:02,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:02,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:10:02,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:10:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:03,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:03,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 13:10:03,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:03,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 13:10:03,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:03,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:03,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:03,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-12 13:10:03,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:03,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-12 13:10:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:03,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:03,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:03,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:10:03,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:03,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 13:10:03,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:10:03,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 286 proven. 66 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-12 13:10:03,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100129989] [2020-10-12 13:10:03,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:03,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:10:03,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749971605] [2020-10-12 13:10:03,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:10:03,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:03,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:10:03,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:10:03,312 INFO L87 Difference]: Start difference. First operand 34155 states and 39993 transitions. Second operand 6 states. [2020-10-12 13:10:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:06,299 INFO L93 Difference]: Finished difference Result 66868 states and 78534 transitions. [2020-10-12 13:10:06,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:10:06,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 458 [2020-10-12 13:10:06,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:06,365 INFO L225 Difference]: With dead ends: 66868 [2020-10-12 13:10:06,365 INFO L226 Difference]: Without dead ends: 35991 [2020-10-12 13:10:06,400 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 13:10:06,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35991 states. [2020-10-12 13:10:06,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35991 to 35905. [2020-10-12 13:10:06,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35905 states. [2020-10-12 13:10:06,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35905 states to 35905 states and 42128 transitions. [2020-10-12 13:10:06,925 INFO L78 Accepts]: Start accepts. Automaton has 35905 states and 42128 transitions. Word has length 458 [2020-10-12 13:10:06,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:06,926 INFO L479 AbstractCegarLoop]: Abstraction has 35905 states and 42128 transitions. [2020-10-12 13:10:06,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:10:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 35905 states and 42128 transitions. [2020-10-12 13:10:06,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-12 13:10:06,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:06,947 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, 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, 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, 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] [2020-10-12 13:10:06,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 13:10:06,947 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:06,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:06,949 INFO L82 PathProgramCache]: Analyzing trace with hash 302378750, now seen corresponding path program 1 times [2020-10-12 13:10:06,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:06,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009366140] [2020-10-12 13:10:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:07,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:07,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:07,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:08,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:12,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:12,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-12 13:10:12,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:10:12,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-12 13:10:12,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 13:10:12,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 13:10:12,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:12,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:12,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:12,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:12,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:12,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:12,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:10:12,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:12,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:12,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:12,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:12,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:12,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:12,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:12,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:12,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:10:12,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:12,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 13:10:12,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:12,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:10:12,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:12,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:10:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:12,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:12,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:10:12,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:12,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 13:10:12,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:12,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:12,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:12,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 13:10:12,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:12,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-12 13:10:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:12,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:12,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:12,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:10:12,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:12,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 13:10:12,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-12 13:10:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:12,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:12,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-12 13:10:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:12,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:12,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:12,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:10:12,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:12,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 13:10:12,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 13:10:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:12,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 374 proven. 170 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-12 13:10:12,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009366140] [2020-10-12 13:10:12,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:12,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:10:12,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840359226] [2020-10-12 13:10:12,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:10:12,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:12,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:10:12,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:10:12,727 INFO L87 Difference]: Start difference. First operand 35905 states and 42128 transitions. Second operand 7 states. [2020-10-12 13:10:15,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:15,881 INFO L93 Difference]: Finished difference Result 69202 states and 81273 transitions. [2020-10-12 13:10:15,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 13:10:15,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 471 [2020-10-12 13:10:15,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:15,953 INFO L225 Difference]: With dead ends: 69202 [2020-10-12 13:10:15,953 INFO L226 Difference]: Without dead ends: 36575 [2020-10-12 13:10:15,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 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 13:10:16,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36575 states. [2020-10-12 13:10:16,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36575 to 35341. [2020-10-12 13:10:16,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35341 states. [2020-10-12 13:10:16,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35341 states to 35341 states and 41439 transitions. [2020-10-12 13:10:16,493 INFO L78 Accepts]: Start accepts. Automaton has 35341 states and 41439 transitions. Word has length 471 [2020-10-12 13:10:16,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:16,493 INFO L479 AbstractCegarLoop]: Abstraction has 35341 states and 41439 transitions. [2020-10-12 13:10:16,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:10:16,494 INFO L276 IsEmpty]: Start isEmpty. Operand 35341 states and 41439 transitions. [2020-10-12 13:10:16,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-12 13:10:16,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:16,522 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, 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, 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, 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 13:10:16,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 13:10:16,522 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:16,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:16,523 INFO L82 PathProgramCache]: Analyzing trace with hash 2128215858, now seen corresponding path program 1 times [2020-10-12 13:10:16,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:16,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801210456] [2020-10-12 13:10:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:17,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:18,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:21,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:21,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 497 [2020-10-12 13:10:21,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:10:21,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 13:10:21,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:21,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:21,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-12 13:10:21,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:10:21,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:21,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:21,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:21,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:21,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:21,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:21,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:10:21,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:21,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:21,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:21,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:21,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:21,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:21,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:21,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:21,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:10:21,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:21,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 13:10:21,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:21,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:21,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:21,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:21,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:21,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:10:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:21,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:21,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:21,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 13:10:21,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:21,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 13:10:21,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:21,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-12 13:10:21,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:21,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-12 13:10:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:21,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:22,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:22,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:10:22,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:22,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 13:10:22,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:10:22,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:22,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-12 13:10:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:22,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:22,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:10:22,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:10:22,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-12 13:10:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:22,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:22,341 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 455 proven. 79 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-12 13:10:22,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801210456] [2020-10-12 13:10:22,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:22,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:10:22,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090656788] [2020-10-12 13:10:22,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:10:22,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:22,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:10:22,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:10:22,343 INFO L87 Difference]: Start difference. First operand 35341 states and 41439 transitions. Second operand 7 states. [2020-10-12 13:10:25,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:25,885 INFO L93 Difference]: Finished difference Result 71192 states and 83622 transitions. [2020-10-12 13:10:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:10:25,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 481 [2020-10-12 13:10:25,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:25,951 INFO L225 Difference]: With dead ends: 71192 [2020-10-12 13:10:25,951 INFO L226 Difference]: Without dead ends: 36049 [2020-10-12 13:10:25,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:10:26,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36049 states. [2020-10-12 13:10:26,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36049 to 30999. [2020-10-12 13:10:26,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30999 states. [2020-10-12 13:10:26,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30999 states to 30999 states and 36546 transitions. [2020-10-12 13:10:26,380 INFO L78 Accepts]: Start accepts. Automaton has 30999 states and 36546 transitions. Word has length 481 [2020-10-12 13:10:26,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:26,380 INFO L479 AbstractCegarLoop]: Abstraction has 30999 states and 36546 transitions. [2020-10-12 13:10:26,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:10:26,380 INFO L276 IsEmpty]: Start isEmpty. Operand 30999 states and 36546 transitions. [2020-10-12 13:10:26,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-12 13:10:26,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:26,397 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:10:26,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 13:10:26,397 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:26,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:26,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1445272921, now seen corresponding path program 1 times [2020-10-12 13:10:26,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:26,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699816442] [2020-10-12 13:10:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:26,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:27,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:27,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:31,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:31,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-12 13:10:31,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:10:31,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 13:10:31,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 13:10:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:10:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 490 [2020-10-12 13:10:31,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:31,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:31,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:31,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:31,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:31,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:31,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:10:31,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:31,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:31,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:31,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:10:31,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:31,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:31,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:31,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:31,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 13:10:31,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:31,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 13:10:31,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-12 13:10:31,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:31,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-12 13:10:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:31,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:32,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:32,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 13:10:32,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:32,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-12 13:10:32,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:32,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:10:32,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:32,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 13:10:32,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:32,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-12 13:10:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:32,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:32,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:32,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:32,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:10:32,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:32,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 13:10:32,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:32,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:32,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:32,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:10:32,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 166 proven. 265 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-12 13:10:32,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699816442] [2020-10-12 13:10:32,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:32,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:10:32,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585821520] [2020-10-12 13:10:32,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:10:32,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:32,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:10:32,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:10:32,418 INFO L87 Difference]: Start difference. First operand 30999 states and 36546 transitions. Second operand 10 states. [2020-10-12 13:10:38,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:38,974 INFO L93 Difference]: Finished difference Result 70122 states and 84296 transitions. [2020-10-12 13:10:38,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 13:10:38,975 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 482 [2020-10-12 13:10:38,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:39,093 INFO L225 Difference]: With dead ends: 70122 [2020-10-12 13:10:39,093 INFO L226 Difference]: Without dead ends: 39513 [2020-10-12 13:10:39,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-12 13:10:39,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39513 states. [2020-10-12 13:10:40,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39513 to 37119. [2020-10-12 13:10:40,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37119 states. [2020-10-12 13:10:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37119 states to 37119 states and 43412 transitions. [2020-10-12 13:10:40,109 INFO L78 Accepts]: Start accepts. Automaton has 37119 states and 43412 transitions. Word has length 482 [2020-10-12 13:10:40,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:40,109 INFO L479 AbstractCegarLoop]: Abstraction has 37119 states and 43412 transitions. [2020-10-12 13:10:40,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 13:10:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 37119 states and 43412 transitions. [2020-10-12 13:10:40,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-10-12 13:10:40,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:40,130 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 13:10:40,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 13:10:40,131 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:40,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:40,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1923105091, now seen corresponding path program 1 times [2020-10-12 13:10:40,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:40,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051277569] [2020-10-12 13:10:40,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:40,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:40,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:42,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:42,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 523 [2020-10-12 13:10:42,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:42,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2250 [2020-10-12 13:10:42,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:42,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:42,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 451 [2020-10-12 13:10:42,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:10:42,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:42,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:42,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:42,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:42,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:42,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:42,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:10:42,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:42,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:42,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:42,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:42,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:42,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:42,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:42,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:42,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:10:42,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:42,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 13:10:42,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:42,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:42,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:10:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:42,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:42,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:42,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:10:42,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:42,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 13:10:42,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:42,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:42,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:42,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:42,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:42,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-12 13:10:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:42,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:42,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:42,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:10:42,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 13:10:42,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:42,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:42,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-12 13:10:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:42,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:42,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:42,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 13:10:42,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:42,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 13:10:42,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-12 13:10:42,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:43,039 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 265 proven. 4 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2020-10-12 13:10:43,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051277569] [2020-10-12 13:10:43,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:43,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:10:43,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853396258] [2020-10-12 13:10:43,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:10:43,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:43,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:10:43,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:10:43,041 INFO L87 Difference]: Start difference. First operand 37119 states and 43412 transitions. Second operand 5 states. [2020-10-12 13:10:45,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:45,572 INFO L93 Difference]: Finished difference Result 77543 states and 90413 transitions. [2020-10-12 13:10:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:10:45,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 507 [2020-10-12 13:10:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:45,645 INFO L225 Difference]: With dead ends: 77543 [2020-10-12 13:10:45,645 INFO L226 Difference]: Without dead ends: 40814 [2020-10-12 13:10:45,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 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 13:10:45,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40814 states. [2020-10-12 13:10:47,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40814 to 39013. [2020-10-12 13:10:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39013 states. [2020-10-12 13:10:47,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39013 states to 39013 states and 45332 transitions. [2020-10-12 13:10:47,477 INFO L78 Accepts]: Start accepts. Automaton has 39013 states and 45332 transitions. Word has length 507 [2020-10-12 13:10:47,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:47,478 INFO L479 AbstractCegarLoop]: Abstraction has 39013 states and 45332 transitions. [2020-10-12 13:10:47,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:10:47,478 INFO L276 IsEmpty]: Start isEmpty. Operand 39013 states and 45332 transitions. [2020-10-12 13:10:47,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-10-12 13:10:47,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:47,496 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, 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, 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, 2, 2, 2, 2, 2, 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] [2020-10-12 13:10:47,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 13:10:47,496 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:47,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:47,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1145979267, now seen corresponding path program 1 times [2020-10-12 13:10:47,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:47,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279994232] [2020-10-12 13:10:47,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:47,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:47,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:48,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:48,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:49,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:51,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:51,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:51,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 531 [2020-10-12 13:10:51,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 13:10:51,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3921 [2020-10-12 13:10:51,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:10:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:10:51,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 390 [2020-10-12 13:10:51,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:51,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:51,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:51,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:51,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:51,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:51,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:10:51,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:51,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:51,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:51,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:51,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:51,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:10:51,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 13:10:51,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:10:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:51,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:10:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:51,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:51,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:51,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-12 13:10:51,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:51,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 13:10:51,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:51,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:51,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:51,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-12 13:10:51,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:51,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-12 13:10:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:51,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:52,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:52,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:10:52,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:52,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 13:10:52,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:52,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:10:52,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:52,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:10:52,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:52,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-12 13:10:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:52,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:52,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:52,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:52,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:10:52,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:52,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-12 13:10:52,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:52,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:52,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:52,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:10:52,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 355 proven. 361 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-12 13:10:52,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279994232] [2020-10-12 13:10:52,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:52,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:10:52,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119124476] [2020-10-12 13:10:52,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:10:52,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:52,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:10:52,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:10:52,461 INFO L87 Difference]: Start difference. First operand 39013 states and 45332 transitions. Second operand 10 states. [2020-10-12 13:11:00,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:00,028 INFO L93 Difference]: Finished difference Result 83729 states and 100093 transitions. [2020-10-12 13:11:00,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 13:11:00,030 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 515 [2020-10-12 13:11:00,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:00,282 INFO L225 Difference]: With dead ends: 83729 [2020-10-12 13:11:00,282 INFO L226 Difference]: Without dead ends: 47612 [2020-10-12 13:11:00,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 13:11:00,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47612 states. [2020-10-12 13:11:00,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47612 to 41319. [2020-10-12 13:11:00,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41319 states. [2020-10-12 13:11:00,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41319 states to 41319 states and 47945 transitions. [2020-10-12 13:11:00,849 INFO L78 Accepts]: Start accepts. Automaton has 41319 states and 47945 transitions. Word has length 515 [2020-10-12 13:11:00,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:00,850 INFO L479 AbstractCegarLoop]: Abstraction has 41319 states and 47945 transitions. [2020-10-12 13:11:00,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 13:11:00,850 INFO L276 IsEmpty]: Start isEmpty. Operand 41319 states and 47945 transitions. [2020-10-12 13:11:00,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2020-10-12 13:11:00,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:00,867 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, 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, 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, 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] [2020-10-12 13:11:00,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 13:11:00,868 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:00,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:00,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1051983431, now seen corresponding path program 1 times [2020-10-12 13:11:00,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:00,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951110724] [2020-10-12 13:11:00,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:00,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:01,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:03,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:03,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:03,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-12 13:11:03,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:11:03,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2775 [2020-10-12 13:11:03,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 13:11:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-12 13:11:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-12 13:11:03,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:03,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:11:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:03,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:03,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:03,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:11:03,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:03,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:11:03,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:03,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:03,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:03,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:03,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:11:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:03,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:03,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:03,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:11:03,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:11:03,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:11:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:11:03,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:03,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:11:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:03,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:03,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:03,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:11:03,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:03,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 13:11:03,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:11:03,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:11:03,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 13:11:03,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:04,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-12 13:11:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:04,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:04,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:04,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 13:11:04,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:11:04,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-12 13:11:04,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:11:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:04,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-12 13:11:04,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:04,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-12 13:11:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:04,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:04,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:11:04,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:11:04,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:11:04,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-12 13:11:04,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:11:04,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:11:04,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:11:04,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:11:04,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:11:04,531 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 597 proven. 132 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-12 13:11:04,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951110724] [2020-10-12 13:11:04,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:11:04,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 13:11:04,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142734442] [2020-10-12 13:11:04,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:11:04,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:11:04,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:11:04,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:11:04,533 INFO L87 Difference]: Start difference. First operand 41319 states and 47945 transitions. Second operand 9 states. [2020-10-12 13:11:09,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:11:09,776 INFO L93 Difference]: Finished difference Result 88561 states and 103662 transitions. [2020-10-12 13:11:09,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 13:11:09,778 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 518 [2020-10-12 13:11:09,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:11:09,938 INFO L225 Difference]: With dead ends: 88561 [2020-10-12 13:11:09,938 INFO L226 Difference]: Without dead ends: 50138 [2020-10-12 13:11:09,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-12 13:11:10,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50138 states. [2020-10-12 13:11:10,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50138 to 43619. [2020-10-12 13:11:10,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43619 states. [2020-10-12 13:11:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43619 states to 43619 states and 50772 transitions. [2020-10-12 13:11:10,641 INFO L78 Accepts]: Start accepts. Automaton has 43619 states and 50772 transitions. Word has length 518 [2020-10-12 13:11:10,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:11:10,641 INFO L479 AbstractCegarLoop]: Abstraction has 43619 states and 50772 transitions. [2020-10-12 13:11:10,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:11:10,642 INFO L276 IsEmpty]: Start isEmpty. Operand 43619 states and 50772 transitions. [2020-10-12 13:11:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-10-12 13:11:10,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:11:10,665 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, 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, 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, 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] [2020-10-12 13:11:10,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 13:11:10,665 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:11:10,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:11:10,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1742938919, now seen corresponding path program 1 times [2020-10-12 13:11:10,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:11:10,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931607148] [2020-10-12 13:11:10,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:11:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:11:10,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:10,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:11,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:11,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:12,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:13,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:13,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:11:13,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking...