/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=NARROWEST --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/Problem15_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:08:48,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:08:48,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:08:48,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:08:48,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:08:48,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:08:48,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:08:48,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:08:48,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:08:48,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:08:48,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:08:48,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:08:48,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:08:48,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:08:48,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:08:48,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:08:48,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:08:48,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:08:48,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:08:48,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:08:48,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:08:48,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:08:48,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:08:48,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:08:48,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:08:48,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:08:48,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:08:48,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:08:48,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:08:48,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:08:48,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:08:48,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:08:48,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:08:48,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:08:48,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:08:48,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:08:48,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:08:48,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:08:48,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:08:48,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:08:48,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:08:48,656 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 [2020-10-13 09:08:48,704 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:08:48,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:08:48,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:08:48,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:08:48,708 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:08:48,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:08:48,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:08:48,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:08:48,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:08:48,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:08:48,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:08:48,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:08:48,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:08:48,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:08:48,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:08:48,712 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:08:48,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:08:48,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:08:48,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:08:48,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:08:48,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:08:48,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:08:48,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:08:48,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:08:48,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:08:48,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:08:48,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:08:48,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:08:48,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:08:48,715 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:08:49,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:08:49,054 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:08:49,061 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:08:49,064 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:08:49,065 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:08:49,066 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label47.c [2020-10-13 09:08:49,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97da0dba5/697e8e1469e9482f8ddae9e78589d475/FLAGae730c4ac [2020-10-13 09:08:49,923 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:08:49,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label47.c [2020-10-13 09:08:49,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97da0dba5/697e8e1469e9482f8ddae9e78589d475/FLAGae730c4ac [2020-10-13 09:08:50,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97da0dba5/697e8e1469e9482f8ddae9e78589d475 [2020-10-13 09:08:50,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:08:50,078 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:08:50,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:08:50,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:08:50,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:08:50,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:08:50" (1/1) ... [2020-10-13 09:08:50,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f37f30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:50, skipping insertion in model container [2020-10-13 09:08:50,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:08:50" (1/1) ... [2020-10-13 09:08:50,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:08:50,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:08:51,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:08:51,211 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:08:51,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:08:51,547 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:08:51,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:51 WrapperNode [2020-10-13 09:08:51,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:08:51,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:08:51,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:08:51,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:08:51,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:51" (1/1) ... [2020-10-13 09:08:51,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:51" (1/1) ... [2020-10-13 09:08:51,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:51" (1/1) ... [2020-10-13 09:08:51,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:51" (1/1) ... [2020-10-13 09:08:51,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:51" (1/1) ... [2020-10-13 09:08:51,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:51" (1/1) ... [2020-10-13 09:08:51,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:51" (1/1) ... [2020-10-13 09:08:51,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:08:51,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:08:51,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:08:51,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:08:51,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:51" (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 [2020-10-13 09:08:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:08:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:08:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:08:51,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:08:51,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:08:51,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:08:51,924 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:08:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:08:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:08:51,925 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:08:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:08:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:08:51,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:08:57,839 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:08:57,840 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:08:57,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:08:57 BoogieIcfgContainer [2020-10-13 09:08:57,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:08:57,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:08:57,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:08:57,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:08:57,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:08:50" (1/3) ... [2020-10-13 09:08:57,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed8a463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:08:57, skipping insertion in model container [2020-10-13 09:08:57,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:08:51" (2/3) ... [2020-10-13 09:08:57,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed8a463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:08:57, skipping insertion in model container [2020-10-13 09:08:57,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:08:57" (3/3) ... [2020-10-13 09:08:57,860 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label47.c [2020-10-13 09:08:57,872 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:08:57,883 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:08:57,900 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:08:57,929 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:08:57,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:08:57,929 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:08:57,929 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:08:57,929 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:08:57,929 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:08:57,930 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:08:57,930 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:08:57,962 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:08:57,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 09:08:57,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:08:57,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:08:57,972 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:08:57,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:08:57,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1707794149, now seen corresponding path program 1 times [2020-10-13 09:08:57,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:08:57,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735280981] [2020-10-13 09:08:57,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:08:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:58,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:58,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:58,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 09:08:58,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:58,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-13 09:08:58,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:08:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:08:58,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 09:08:58,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:08:58,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:08:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:08:58,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:08:58,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:08:58,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:08:58,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:08:58,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:08:58,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:08:58,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:08:58,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:08:58,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:08:58,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:08:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:08:58,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735280981] [2020-10-13 09:08:58,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:08:58,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:08:58,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799887398] [2020-10-13 09:08:58,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:08:58,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:08:58,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:08:58,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:08:58,693 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:09:07,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:07,872 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-13 09:09:07,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:07,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-13 09:09:07,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:07,897 INFO L225 Difference]: With dead ends: 1199 [2020-10-13 09:09:07,897 INFO L226 Difference]: Without dead ends: 697 [2020-10-13 09:09:07,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:07,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-13 09:09:08,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-13 09:09:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 09:09:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-13 09:09:08,031 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 15 [2020-10-13 09:09:08,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:08,032 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-13 09:09:08,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:09:08,032 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-13 09:09:08,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 09:09:08,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:08,036 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:09:08,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:09:08,037 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:08,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:08,038 INFO L82 PathProgramCache]: Analyzing trace with hash -581258366, now seen corresponding path program 1 times [2020-10-13 09:09:08,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:08,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739657979] [2020-10-13 09:09:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:08,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:08,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:09,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:09,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 09:09:09,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:09:09,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1464 [2020-10-13 09:09:09,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:09,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:09,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:09:09,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 09:09:09,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:09:09,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:09,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:09,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:09,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:09,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:09,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:09:09,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:09,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:09,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:09,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:09,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:09,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:09:09,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 09:09:09,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:09,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:09:09,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:09:09,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739657979] [2020-10-13 09:09:09,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:09,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:09:09,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469826781] [2020-10-13 09:09:09,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:09:09,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:09,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:09:09,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:09:09,874 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 6 states. [2020-10-13 09:09:22,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:22,933 INFO L93 Difference]: Finished difference Result 2639 states and 3913 transitions. [2020-10-13 09:09:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:09:22,935 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-10-13 09:09:22,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:22,945 INFO L225 Difference]: With dead ends: 2639 [2020-10-13 09:09:22,946 INFO L226 Difference]: Without dead ends: 1954 [2020-10-13 09:09:22,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:09:22,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-13 09:09:23,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1945. [2020-10-13 09:09:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2020-10-13 09:09:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 2598 transitions. [2020-10-13 09:09:23,017 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 2598 transitions. Word has length 84 [2020-10-13 09:09:23,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:23,017 INFO L479 AbstractCegarLoop]: Abstraction has 1945 states and 2598 transitions. [2020-10-13 09:09:23,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:09:23,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 2598 transitions. [2020-10-13 09:09:23,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-13 09:09:23,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:23,028 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:09:23,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:09:23,028 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:23,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:23,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1513418889, now seen corresponding path program 1 times [2020-10-13 09:09:23,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:23,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001194608] [2020-10-13 09:09:23,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:23,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:23,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:23,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:24,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:25,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:26,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:26,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:28,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:28,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-13 09:09:28,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 09:09:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 09:09:28,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-13 09:09:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:09:28,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:28,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:28,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:28,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:28,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:28,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:09:28,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:28,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:28,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:28,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:09:28,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:28,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:28,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:28,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:09:28,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:28,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:09:28,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:28,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:28,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:28,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:28,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:09:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:28,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:28,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:28,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:09:28,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:28,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-13 09:09:28,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:28,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:09:28,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 09:09:28,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001194608] [2020-10-13 09:09:28,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:28,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:28,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380210274] [2020-10-13 09:09:28,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:28,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:28,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:28,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:28,774 INFO L87 Difference]: Start difference. First operand 1945 states and 2598 transitions. Second operand 5 states. [2020-10-13 09:09:36,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:36,694 INFO L93 Difference]: Finished difference Result 4823 states and 6687 transitions. [2020-10-13 09:09:36,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:36,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-13 09:09:36,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:36,720 INFO L225 Difference]: With dead ends: 4823 [2020-10-13 09:09:36,720 INFO L226 Difference]: Without dead ends: 2884 [2020-10-13 09:09:36,727 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 [2020-10-13 09:09:36,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-10-13 09:09:36,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2880. [2020-10-13 09:09:36,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2020-10-13 09:09:36,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3689 transitions. [2020-10-13 09:09:36,834 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3689 transitions. Word has length 233 [2020-10-13 09:09:36,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:36,839 INFO L479 AbstractCegarLoop]: Abstraction has 2880 states and 3689 transitions. [2020-10-13 09:09:36,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:36,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3689 transitions. [2020-10-13 09:09:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-13 09:09:36,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:36,850 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:09:36,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:09:36,850 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:36,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:36,851 INFO L82 PathProgramCache]: Analyzing trace with hash -765600166, now seen corresponding path program 1 times [2020-10-13 09:09:36,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:36,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213881629] [2020-10-13 09:09:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:37,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:38,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:39,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:39,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-13 09:09:39,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:09:39,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2877 [2020-10-13 09:09:39,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 250 [2020-10-13 09:09:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 09:09:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:39,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:39,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:39,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:39,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:39,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:39,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:09:39,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:39,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:39,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:39,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:09:39,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:39,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:39,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:39,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:09:39,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:09:39,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:39,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:40,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:09:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:40,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:40,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:40,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 09:09:40,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:40,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-13 09:09:40,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:40,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 09:09:40,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 09:09:40,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213881629] [2020-10-13 09:09:40,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:40,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:40,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446832463] [2020-10-13 09:09:40,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:40,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:40,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:40,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:40,403 INFO L87 Difference]: Start difference. First operand 2880 states and 3689 transitions. Second operand 5 states. [2020-10-13 09:09:51,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:09:51,150 INFO L93 Difference]: Finished difference Result 8265 states and 10809 transitions. [2020-10-13 09:09:51,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:09:51,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 253 [2020-10-13 09:09:51,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:09:51,188 INFO L225 Difference]: With dead ends: 8265 [2020-10-13 09:09:51,189 INFO L226 Difference]: Without dead ends: 5391 [2020-10-13 09:09:51,200 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 [2020-10-13 09:09:51,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5391 states. [2020-10-13 09:09:51,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5391 to 5379. [2020-10-13 09:09:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5379 states. [2020-10-13 09:09:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 6915 transitions. [2020-10-13 09:09:51,368 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 6915 transitions. Word has length 253 [2020-10-13 09:09:51,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:09:51,369 INFO L479 AbstractCegarLoop]: Abstraction has 5379 states and 6915 transitions. [2020-10-13 09:09:51,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:09:51,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 6915 transitions. [2020-10-13 09:09:51,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-13 09:09:51,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:09:51,378 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:09:51,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:09:51,379 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:09:51,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:09:51,380 INFO L82 PathProgramCache]: Analyzing trace with hash 831925027, now seen corresponding path program 1 times [2020-10-13 09:09:51,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:09:51,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200039403] [2020-10-13 09:09:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:09:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:51,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:51,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:56,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:56,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-13 09:09:56,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:09:56,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 09:09:56,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:56,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:09:56,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 308 [2020-10-13 09:09:56,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 09:09:56,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:56,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:09:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:56,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:56,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:56,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:09:56,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:09:56,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:56,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:56,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:09:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:56,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:56,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:56,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:09:56,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:56,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:09:56,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:09:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:09:56,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:09:56,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:09:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:09:56,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:09:56,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:09:56,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 09:09:56,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:09:56,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 09:09:56,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:09:56,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:09:56,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:09:56,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:09:56,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:09:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-13 09:09:57,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200039403] [2020-10-13 09:09:57,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:09:57,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:09:57,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173142133] [2020-10-13 09:09:57,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:09:57,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:09:57,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:09:57,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:09:57,269 INFO L87 Difference]: Start difference. First operand 5379 states and 6915 transitions. Second operand 5 states. [2020-10-13 09:10:10,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:10,158 INFO L93 Difference]: Finished difference Result 13887 states and 18298 transitions. [2020-10-13 09:10:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:10,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-13 09:10:10,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:10,218 INFO L225 Difference]: With dead ends: 13887 [2020-10-13 09:10:10,219 INFO L226 Difference]: Without dead ends: 8514 [2020-10-13 09:10:10,236 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 [2020-10-13 09:10:10,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8514 states. [2020-10-13 09:10:10,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8514 to 8496. [2020-10-13 09:10:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8496 states. [2020-10-13 09:10:10,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8496 states to 8496 states and 11301 transitions. [2020-10-13 09:10:10,487 INFO L78 Accepts]: Start accepts. Automaton has 8496 states and 11301 transitions. Word has length 311 [2020-10-13 09:10:10,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:10,488 INFO L479 AbstractCegarLoop]: Abstraction has 8496 states and 11301 transitions. [2020-10-13 09:10:10,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:10:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 8496 states and 11301 transitions. [2020-10-13 09:10:10,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-13 09:10:10,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:10,501 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:10:10,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:10:10,501 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:10,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:10,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1795698106, now seen corresponding path program 1 times [2020-10-13 09:10:10,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:10,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119969298] [2020-10-13 09:10:10,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:10,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:10,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:10,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:10,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:12,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:12,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:13,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:14,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:15,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:15,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-13 09:10:15,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:10:15,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 09:10:15,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 09:10:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:10:15,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:15,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:15,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:15,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:15,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:15,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:15,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:10:15,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:15,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:15,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:15,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:15,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:15,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:15,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 09:10:15,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:15,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 09:10:15,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:15,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 09:10:15,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:15,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 09:10:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:15,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:16,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:16,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:16,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:10:16,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:10:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-13 09:10:16,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:10:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 09:10:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:16,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-13 09:10:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:16,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:16,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:16,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:10:16,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:16,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:10:16,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:16,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:10:16,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:16,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 120 proven. 105 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-13 09:10:16,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119969298] [2020-10-13 09:10:16,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:16,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:10:16,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868581023] [2020-10-13 09:10:16,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:10:16,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:16,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:10:16,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:10:16,500 INFO L87 Difference]: Start difference. First operand 8496 states and 11301 transitions. Second operand 7 states. [2020-10-13 09:10:29,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:29,546 INFO L93 Difference]: Finished difference Result 21898 states and 31214 transitions. [2020-10-13 09:10:29,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:10:29,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 339 [2020-10-13 09:10:29,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:29,632 INFO L225 Difference]: With dead ends: 21898 [2020-10-13 09:10:29,632 INFO L226 Difference]: Without dead ends: 13358 [2020-10-13 09:10:29,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:10:29,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13358 states. [2020-10-13 09:10:30,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13358 to 13248. [2020-10-13 09:10:30,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13248 states. [2020-10-13 09:10:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13248 states to 13248 states and 18304 transitions. [2020-10-13 09:10:30,180 INFO L78 Accepts]: Start accepts. Automaton has 13248 states and 18304 transitions. Word has length 339 [2020-10-13 09:10:30,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:30,181 INFO L479 AbstractCegarLoop]: Abstraction has 13248 states and 18304 transitions. [2020-10-13 09:10:30,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:10:30,181 INFO L276 IsEmpty]: Start isEmpty. Operand 13248 states and 18304 transitions. [2020-10-13 09:10:30,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-10-13 09:10:30,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:30,204 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:10:30,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:10:30,205 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:30,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:30,206 INFO L82 PathProgramCache]: Analyzing trace with hash -2136696353, now seen corresponding path program 1 times [2020-10-13 09:10:30,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:30,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410354950] [2020-10-13 09:10:30,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:30,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:30,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:33,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:33,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-13 09:10:33,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:10:33,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2959 [2020-10-13 09:10:33,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:33,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:33,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-13 09:10:33,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 09:10:33,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:33,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:33,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:33,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:33,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:33,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:33,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:10:33,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:33,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:33,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:33,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:33,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:33,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:33,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 09:10:33,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:33,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 09:10:33,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:33,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:33,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:33,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:33,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:10:33,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:10:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:33,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:33,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:33,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:10:33,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:33,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 09:10:33,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:33,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:33,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:33,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:10:33,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-13 09:10:33,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410354950] [2020-10-13 09:10:33,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:33,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:10:33,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245983593] [2020-10-13 09:10:33,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:10:33,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:33,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:10:33,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:10:33,919 INFO L87 Difference]: Start difference. First operand 13248 states and 18304 transitions. Second operand 5 states. [2020-10-13 09:10:41,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:41,923 INFO L93 Difference]: Finished difference Result 31085 states and 44097 transitions. [2020-10-13 09:10:41,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:10:41,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 400 [2020-10-13 09:10:41,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:42,000 INFO L225 Difference]: With dead ends: 31085 [2020-10-13 09:10:42,001 INFO L226 Difference]: Without dead ends: 17899 [2020-10-13 09:10:42,043 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 [2020-10-13 09:10:42,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17899 states. [2020-10-13 09:10:42,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17899 to 17896. [2020-10-13 09:10:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17896 states. [2020-10-13 09:10:42,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17896 states to 17896 states and 24616 transitions. [2020-10-13 09:10:42,573 INFO L78 Accepts]: Start accepts. Automaton has 17896 states and 24616 transitions. Word has length 400 [2020-10-13 09:10:42,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:42,574 INFO L479 AbstractCegarLoop]: Abstraction has 17896 states and 24616 transitions. [2020-10-13 09:10:42,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:10:42,574 INFO L276 IsEmpty]: Start isEmpty. Operand 17896 states and 24616 transitions. [2020-10-13 09:10:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-13 09:10:42,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:42,593 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:10:42,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:10:42,594 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:42,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:42,594 INFO L82 PathProgramCache]: Analyzing trace with hash -339281079, now seen corresponding path program 1 times [2020-10-13 09:10:42,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:42,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328503647] [2020-10-13 09:10:42,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:42,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:42,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:43,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:43,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:44,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:47,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:47,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-13 09:10:47,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:10:47,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:10:47,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:47,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:47,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 09:10:47,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:10:47,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:47,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:10:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:47,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:47,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:47,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:10:47,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:47,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:10:47,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:47,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:47,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:47,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:47,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:47,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:10:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:47,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:47,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:47,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:10:47,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:47,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 09:10:47,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:10:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:10:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-13 09:10:47,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:47,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:10:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:47,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:48,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:48,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:48,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:10:48,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:10:48,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-13 09:10:48,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:10:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:10:48,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 09:10:48,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:48,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-13 09:10:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:48,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:48,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:10:48,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:10:48,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:10:48,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 09:10:48,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:10:48,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:10:48,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:10:48,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:10:48,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:10:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 146 proven. 105 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-13 09:10:48,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328503647] [2020-10-13 09:10:48,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:10:48,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:10:48,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121801789] [2020-10-13 09:10:48,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:10:48,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:10:48,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:10:48,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:10:48,569 INFO L87 Difference]: Start difference. First operand 17896 states and 24616 transitions. Second operand 7 states. [2020-10-13 09:10:58,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:10:58,771 INFO L93 Difference]: Finished difference Result 36081 states and 51436 transitions. [2020-10-13 09:10:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:10:58,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 406 [2020-10-13 09:10:58,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:10:58,866 INFO L225 Difference]: With dead ends: 36081 [2020-10-13 09:10:58,867 INFO L226 Difference]: Without dead ends: 18196 [2020-10-13 09:10:58,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:10:58,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18196 states. [2020-10-13 09:10:59,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18196 to 17914. [2020-10-13 09:10:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17914 states. [2020-10-13 09:10:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17914 states to 17914 states and 23906 transitions. [2020-10-13 09:10:59,353 INFO L78 Accepts]: Start accepts. Automaton has 17914 states and 23906 transitions. Word has length 406 [2020-10-13 09:10:59,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:10:59,354 INFO L479 AbstractCegarLoop]: Abstraction has 17914 states and 23906 transitions. [2020-10-13 09:10:59,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:10:59,354 INFO L276 IsEmpty]: Start isEmpty. Operand 17914 states and 23906 transitions. [2020-10-13 09:10:59,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-13 09:10:59,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:10:59,368 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:10:59,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:10:59,368 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:10:59,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:10:59,369 INFO L82 PathProgramCache]: Analyzing trace with hash -701627979, now seen corresponding path program 1 times [2020-10-13 09:10:59,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:10:59,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511773862] [2020-10-13 09:10:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:10:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:10:59,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:10:59,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:00,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:03,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:03,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-13 09:11:03,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:11:03,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4217 [2020-10-13 09:11:03,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:03,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:11:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 09:11:03,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:03,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:03,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:03,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:03,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:03,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:03,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:11:03,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:03,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:03,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:03,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:03,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:03,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:03,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:03,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:03,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:11:03,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:03,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 09:11:03,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:03,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:03,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:03,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:11:03,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:03,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:11:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:03,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:04,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:04,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:11:04,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:11:04,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:11:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:11:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:04,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-10-13 09:11:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:04,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:04,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:04,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:11:04,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:04,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:11:04,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:11:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:04,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:04,206 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 110 proven. 84 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-13 09:11:04,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511773862] [2020-10-13 09:11:04,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:04,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:11:04,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977003800] [2020-10-13 09:11:04,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:11:04,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:04,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:11:04,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:11:04,209 INFO L87 Difference]: Start difference. First operand 17914 states and 23906 transitions. Second operand 7 states. [2020-10-13 09:11:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:14,451 INFO L93 Difference]: Finished difference Result 36299 states and 49660 transitions. [2020-10-13 09:11:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:11:14,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 406 [2020-10-13 09:11:14,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:14,527 INFO L225 Difference]: With dead ends: 36299 [2020-10-13 09:11:14,527 INFO L226 Difference]: Without dead ends: 18395 [2020-10-13 09:11:14,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:11:14,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18395 states. [2020-10-13 09:11:15,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18395 to 18338. [2020-10-13 09:11:15,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18338 states. [2020-10-13 09:11:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18338 states to 18338 states and 23287 transitions. [2020-10-13 09:11:15,107 INFO L78 Accepts]: Start accepts. Automaton has 18338 states and 23287 transitions. Word has length 406 [2020-10-13 09:11:15,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:15,107 INFO L479 AbstractCegarLoop]: Abstraction has 18338 states and 23287 transitions. [2020-10-13 09:11:15,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:11:15,108 INFO L276 IsEmpty]: Start isEmpty. Operand 18338 states and 23287 transitions. [2020-10-13 09:11:15,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-13 09:11:15,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:15,123 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:15,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:11:15,124 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:15,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:15,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1870905216, now seen corresponding path program 1 times [2020-10-13 09:11:15,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:15,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538927614] [2020-10-13 09:11:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:15,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:15,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:15,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:16,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:18,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:20,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:20,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 451 [2020-10-13 09:11:20,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:11:20,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 09:11:20,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:20,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:11:20,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-13 09:11:20,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:11:20,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:20,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:20,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:20,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:20,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:20,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:20,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:11:20,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:20,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:20,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:20,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:20,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:20,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:11:20,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:20,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 09:11:20,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:20,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:20,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:20,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-13 09:11:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:20,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:11:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:20,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:20,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:20,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:20,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:11:20,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:11:20,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-13 09:11:20,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:20,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:11:20,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:11:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:11:20,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:21,153 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-13 09:11:21,360 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-13 09:11:21,530 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-10-13 09:11:21,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-13 09:11:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:21,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:21,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:11:21,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:21,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:11:21,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:21,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:21,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:11:21,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:21,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 104 proven. 78 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-13 09:11:22,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538927614] [2020-10-13 09:11:22,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:22,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 09:11:22,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457948168] [2020-10-13 09:11:22,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:11:22,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:22,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:11:22,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:11:22,283 INFO L87 Difference]: Start difference. First operand 18338 states and 23287 transitions. Second operand 10 states. [2020-10-13 09:11:22,545 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2020-10-13 09:11:22,916 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-10-13 09:11:23,115 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2020-10-13 09:11:24,688 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2020-10-13 09:11:25,385 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-10-13 09:11:25,675 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-10-13 09:11:26,817 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-10-13 09:11:27,279 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-13 09:11:29,467 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-10-13 09:11:29,680 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2020-10-13 09:11:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:36,891 INFO L93 Difference]: Finished difference Result 36889 states and 47275 transitions. [2020-10-13 09:11:36,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 09:11:36,893 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 437 [2020-10-13 09:11:36,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:36,958 INFO L225 Difference]: With dead ends: 36889 [2020-10-13 09:11:36,959 INFO L226 Difference]: Without dead ends: 18459 [2020-10-13 09:11:36,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2020-10-13 09:11:37,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18459 states. [2020-10-13 09:11:37,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18459 to 18388. [2020-10-13 09:11:37,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18388 states. [2020-10-13 09:11:37,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18388 states to 18388 states and 23543 transitions. [2020-10-13 09:11:37,399 INFO L78 Accepts]: Start accepts. Automaton has 18388 states and 23543 transitions. Word has length 437 [2020-10-13 09:11:37,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:37,400 INFO L479 AbstractCegarLoop]: Abstraction has 18388 states and 23543 transitions. [2020-10-13 09:11:37,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 09:11:37,400 INFO L276 IsEmpty]: Start isEmpty. Operand 18388 states and 23543 transitions. [2020-10-13 09:11:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-13 09:11:37,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:37,423 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:37,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:11:37,423 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:37,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:37,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1602798996, now seen corresponding path program 1 times [2020-10-13 09:11:37,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:37,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441186631] [2020-10-13 09:11:37,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:37,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:37,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:39,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:39,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 494 [2020-10-13 09:11:39,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:11:39,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1698 [2020-10-13 09:11:39,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:11:39,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 09:11:39,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:39,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:11:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:39,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:39,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:39,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:11:39,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:39,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:11:39,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:39,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:39,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:39,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:11:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:39,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:39,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:39,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 09:11:39,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:39,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-13 09:11:39,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:11:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:11:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-13 09:11:39,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:39,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:11:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:39,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:39,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:39,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:11:39,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:39,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:11:39,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:11:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:11:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:11:39,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:39,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-10-13 09:11:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:39,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:40,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:11:40,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:11:40,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:11:40,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-13 09:11:40,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:11:40,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:11:40,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:11:40,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:11:40,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:11:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 110 proven. 84 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-13 09:11:40,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441186631] [2020-10-13 09:11:40,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:11:40,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:11:40,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844357664] [2020-10-13 09:11:40,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:11:40,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:11:40,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:11:40,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:11:40,258 INFO L87 Difference]: Start difference. First operand 18388 states and 23543 transitions. Second operand 8 states. [2020-10-13 09:11:54,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:11:54,879 INFO L93 Difference]: Finished difference Result 48872 states and 65391 transitions. [2020-10-13 09:11:54,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:11:54,881 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 480 [2020-10-13 09:11:54,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:11:54,982 INFO L225 Difference]: With dead ends: 48872 [2020-10-13 09:11:54,982 INFO L226 Difference]: Without dead ends: 30494 [2020-10-13 09:11:55,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 09:11:55,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30494 states. [2020-10-13 09:11:55,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30494 to 30178. [2020-10-13 09:11:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30178 states. [2020-10-13 09:11:55,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30178 states to 30178 states and 38987 transitions. [2020-10-13 09:11:55,798 INFO L78 Accepts]: Start accepts. Automaton has 30178 states and 38987 transitions. Word has length 480 [2020-10-13 09:11:55,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:11:55,799 INFO L479 AbstractCegarLoop]: Abstraction has 30178 states and 38987 transitions. [2020-10-13 09:11:55,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:11:55,799 INFO L276 IsEmpty]: Start isEmpty. Operand 30178 states and 38987 transitions. [2020-10-13 09:11:55,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-13 09:11:55,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:11:55,812 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:11:55,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:11:55,813 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:11:55,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:11:55,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1768783909, now seen corresponding path program 1 times [2020-10-13 09:11:55,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:11:55,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263413010] [2020-10-13 09:11:55,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:11:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:11:55,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:56,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:11:57,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:00,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:00,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-13 09:12:00,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:12:00,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 09:12:00,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:00,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:00,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:12:00,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 09:12:00,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:00,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:00,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:00,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:00,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:00,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:00,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:12:00,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:00,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:00,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:00,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:00,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:01,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:01,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:01,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:01,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:12:01,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:01,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 09:12:01,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:01,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:01,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:12:01,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:01,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:12:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:01,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:01,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:01,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:12:01,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:01,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:12:01,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:12:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 09:12:01,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:01,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:12:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:01,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:01,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:01,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 09:12:01,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:01,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 09:12:01,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:01,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:01,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-13 09:12:01,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:01,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:01,644 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 136 proven. 110 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-13 09:12:01,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263413010] [2020-10-13 09:12:01,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:01,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:12:01,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644113958] [2020-10-13 09:12:01,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:12:01,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:01,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:12:01,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:12:01,647 INFO L87 Difference]: Start difference. First operand 30178 states and 38987 transitions. Second operand 7 states. [2020-10-13 09:12:12,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:12,888 INFO L93 Difference]: Finished difference Result 65954 states and 85750 transitions. [2020-10-13 09:12:12,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:12:12,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 482 [2020-10-13 09:12:12,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:12,972 INFO L225 Difference]: With dead ends: 65954 [2020-10-13 09:12:12,972 INFO L226 Difference]: Without dead ends: 35786 [2020-10-13 09:12:13,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:12:13,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35786 states. [2020-10-13 09:12:15,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35786 to 35460. [2020-10-13 09:12:15,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35460 states. [2020-10-13 09:12:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35460 states to 35460 states and 44347 transitions. [2020-10-13 09:12:15,150 INFO L78 Accepts]: Start accepts. Automaton has 35460 states and 44347 transitions. Word has length 482 [2020-10-13 09:12:15,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:15,151 INFO L479 AbstractCegarLoop]: Abstraction has 35460 states and 44347 transitions. [2020-10-13 09:12:15,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:12:15,151 INFO L276 IsEmpty]: Start isEmpty. Operand 35460 states and 44347 transitions. [2020-10-13 09:12:15,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-10-13 09:12:15,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:15,166 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:15,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:12:15,167 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:15,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:15,167 INFO L82 PathProgramCache]: Analyzing trace with hash 778227640, now seen corresponding path program 1 times [2020-10-13 09:12:15,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:15,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414819651] [2020-10-13 09:12:15,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:15,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:15,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:15,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:15,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:17,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:20,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:20,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 507 [2020-10-13 09:12:20,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:12:20,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 09:12:20,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:20,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:12:20,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-13 09:12:20,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:12:20,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:20,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:20,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:20,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:20,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:20,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:20,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:12:20,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:20,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:20,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:20,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:20,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:20,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:12:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:20,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:20,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:20,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:12:20,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:20,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 09:12:20,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:20,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:20,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:12:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:20,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:20,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:20,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:12:20,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:20,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:12:20,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:12:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:12:20,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:20,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-13 09:12:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:20,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:20,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:20,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:12:20,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:12:20,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-13 09:12:20,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:12:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:12:20,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:20,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-10-13 09:12:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:20,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:20,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:12:20,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:20,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 09:12:20,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:20,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:20,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 09:12:20,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:20,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 197 proven. 78 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-10-13 09:12:21,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414819651] [2020-10-13 09:12:21,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:12:21,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:12:21,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355507527] [2020-10-13 09:12:21,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:12:21,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:12:21,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:12:21,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:12:21,026 INFO L87 Difference]: Start difference. First operand 35460 states and 44347 transitions. Second operand 7 states. [2020-10-13 09:12:36,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:12:36,897 INFO L93 Difference]: Finished difference Result 71497 states and 92121 transitions. [2020-10-13 09:12:36,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:12:36,899 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 491 [2020-10-13 09:12:36,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:12:37,004 INFO L225 Difference]: With dead ends: 71497 [2020-10-13 09:12:37,004 INFO L226 Difference]: Without dead ends: 35748 [2020-10-13 09:12:37,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:12:37,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35748 states. [2020-10-13 09:12:37,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35748 to 35452. [2020-10-13 09:12:37,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35452 states. [2020-10-13 09:12:37,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35452 states to 35452 states and 44082 transitions. [2020-10-13 09:12:37,619 INFO L78 Accepts]: Start accepts. Automaton has 35452 states and 44082 transitions. Word has length 491 [2020-10-13 09:12:37,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:12:37,620 INFO L479 AbstractCegarLoop]: Abstraction has 35452 states and 44082 transitions. [2020-10-13 09:12:37,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:12:37,620 INFO L276 IsEmpty]: Start isEmpty. Operand 35452 states and 44082 transitions. [2020-10-13 09:12:37,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2020-10-13 09:12:37,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:12:37,633 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:12:37,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:12:37,633 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:12:37,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:12:37,634 INFO L82 PathProgramCache]: Analyzing trace with hash 92218972, now seen corresponding path program 1 times [2020-10-13 09:12:37,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:12:37,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939336385] [2020-10-13 09:12:37,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:12:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:37,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:37,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:40,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:40,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 570 [2020-10-13 09:12:40,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:12:40,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2284 [2020-10-13 09:12:40,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:40,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:12:40,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:12:40,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 09:12:40,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:40,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:12:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:12:40,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:12:40,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:12:40,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:12:40,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:12:40,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:12:40,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:12:40,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:12:40,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:12:40,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:12:40,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:12:40,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8