/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/Problem04_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:35:44,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:35:44,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:35:45,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:35:45,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:35:45,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:35:45,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:35:45,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:35:45,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:35:45,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:35:45,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:35:45,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:35:45,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:35:45,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:35:45,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:35:45,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:35:45,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:35:45,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:35:45,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:35:45,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:35:45,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:35:45,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:35:45,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:35:45,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:35:45,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:35:45,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:35:45,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:35:45,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:35:45,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:35:45,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:35:45,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:35:45,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:35:45,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:35:45,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:35:45,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:35:45,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:35:45,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:35:45,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:35:45,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:35:45,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:35:45,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:35:45,105 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 06:35:45,127 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:35:45,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:35:45,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:35:45,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:35:45,129 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:35:45,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:35:45,129 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:35:45,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:35:45,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:35:45,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:35:45,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:35:45,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:35:45,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:35:45,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:35:45,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:35:45,131 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:35:45,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:35:45,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:35:45,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:35:45,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:35:45,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:35:45,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:35:45,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:35:45,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:35:45,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:35:45,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:35:45,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:35:45,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:35:45,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:35:45,134 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 06:35:45,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:35:45,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:35:45,454 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:35:45,456 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:35:45,456 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:35:45,457 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label26.c [2020-10-13 06:35:45,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3973a377c/96d4bfd3052d49c3b67f61277d6b336e/FLAGc0a7b84eb [2020-10-13 06:35:46,319 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:35:46,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label26.c [2020-10-13 06:35:46,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3973a377c/96d4bfd3052d49c3b67f61277d6b336e/FLAGc0a7b84eb [2020-10-13 06:35:46,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3973a377c/96d4bfd3052d49c3b67f61277d6b336e [2020-10-13 06:35:46,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:35:46,461 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:35:46,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:35:46,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:35:46,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:35:46,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:35:46" (1/1) ... [2020-10-13 06:35:46,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb58955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:46, skipping insertion in model container [2020-10-13 06:35:46,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:35:46" (1/1) ... [2020-10-13 06:35:46,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:35:46,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:35:48,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:35:48,224 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:35:48,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:35:48,909 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:35:48,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:48 WrapperNode [2020-10-13 06:35:48,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:35:48,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:35:48,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:35:48,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:35:48,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:48" (1/1) ... [2020-10-13 06:35:48,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:48" (1/1) ... [2020-10-13 06:35:48,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:48" (1/1) ... [2020-10-13 06:35:48,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:48" (1/1) ... [2020-10-13 06:35:49,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:48" (1/1) ... [2020-10-13 06:35:49,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:48" (1/1) ... [2020-10-13 06:35:49,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:48" (1/1) ... [2020-10-13 06:35:49,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:35:49,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:35:49,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:35:49,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:35:49,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:48" (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 06:35:49,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:35:49,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:35:49,267 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:35:49,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:35:49,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:35:49,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:35:49,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:35:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:35:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:35:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:35:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:35:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:35:49,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:35:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:35:49,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:35:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:35:49,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:35:53,461 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:35:53,461 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:35:53,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:35:53 BoogieIcfgContainer [2020-10-13 06:35:53,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:35:53,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:35:53,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:35:53,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:35:53,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:35:46" (1/3) ... [2020-10-13 06:35:53,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d18953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:35:53, skipping insertion in model container [2020-10-13 06:35:53,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:35:48" (2/3) ... [2020-10-13 06:35:53,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d18953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:35:53, skipping insertion in model container [2020-10-13 06:35:53,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:35:53" (3/3) ... [2020-10-13 06:35:53,489 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label26.c [2020-10-13 06:35:53,500 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:35:53,520 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:35:53,536 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:35:53,571 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:35:53,571 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:35:53,571 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:35:53,571 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:35:53,571 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:35:53,571 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:35:53,572 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:35:53,572 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:35:53,613 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-13 06:35:53,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2020-10-13 06:35:53,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:35:53,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:35:53,672 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:35:53,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:35:53,679 INFO L82 PathProgramCache]: Analyzing trace with hash -323397917, now seen corresponding path program 1 times [2020-10-13 06:35:53,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:35:53,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828097305] [2020-10-13 06:35:53,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:35:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:35:54,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:57,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:35:59,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:35:59,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 794 [2020-10-13 06:35:59,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:35:59,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 06:35:59,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:35:59,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 06:35:59,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:35:59,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-13 06:35:59,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:36:01,934 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-10-13 06:36:02,080 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-10-13 06:36:02,206 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-13 06:36:02,338 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-13 06:36:02,605 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-10-13 06:36:02,757 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-10-13 06:36:02,933 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2020-10-13 06:36:03,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:36:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:03,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:03,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:03,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:36:03,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:36:03,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 06:36:03,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:03,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:36:03,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:36:03,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:36:03,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:36:08,454 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 06:36:08,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828097305] [2020-10-13 06:36:08,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:36:08,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-13 06:36:08,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067162245] [2020-10-13 06:36:08,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 06:36:08,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:36:08,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 06:36:08,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-13 06:36:08,493 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-13 06:36:08,843 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-13 06:36:08,992 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-13 06:36:09,183 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-13 06:36:09,514 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-13 06:36:09,820 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-13 06:36:11,974 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-13 06:36:12,366 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 119 [2020-10-13 06:36:14,459 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-13 06:36:14,788 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 105 [2020-10-13 06:36:15,980 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-10-13 06:36:25,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:36:25,693 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-13 06:36:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 06:36:25,697 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 780 [2020-10-13 06:36:25,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:36:25,766 INFO L225 Difference]: With dead ends: 2548 [2020-10-13 06:36:25,766 INFO L226 Difference]: Without dead ends: 1580 [2020-10-13 06:36:25,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 06:36:25,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-13 06:36:25,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-13 06:36:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-13 06:36:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-13 06:36:25,941 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 780 [2020-10-13 06:36:25,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:36:25,945 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-13 06:36:25,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 06:36:25,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-13 06:36:25,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2020-10-13 06:36:25,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:36:25,998 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:36:25,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:36:26,000 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:36:26,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:36:26,001 INFO L82 PathProgramCache]: Analyzing trace with hash -2058715788, now seen corresponding path program 1 times [2020-10-13 06:36:26,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:36:26,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770723937] [2020-10-13 06:36:26,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:36:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:26,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:31,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:31,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 815 [2020-10-13 06:36:31,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 06:36:31,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 06:36:31,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 06:36:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:36:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 785 [2020-10-13 06:36:31,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:36:31,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:36:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:31,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:31,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:31,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:36:31,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:36:31,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:36:31,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:36:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:36:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:36:31,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:36:31,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:36:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:31,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:31,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:31,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:36:31,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:36:31,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:36:31,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:31,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:36:31,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:36:31,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:36:31,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:36:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:36:33,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770723937] [2020-10-13 06:36:33,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:36:33,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 06:36:33,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843622536] [2020-10-13 06:36:33,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:36:33,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:36:33,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:36:33,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:36:33,235 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 5 states. [2020-10-13 06:36:40,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:36:40,759 INFO L93 Difference]: Finished difference Result 3272 states and 5552 transitions. [2020-10-13 06:36:40,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 06:36:40,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 799 [2020-10-13 06:36:40,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:36:40,776 INFO L225 Difference]: With dead ends: 3272 [2020-10-13 06:36:40,776 INFO L226 Difference]: Without dead ends: 2425 [2020-10-13 06:36:40,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 06:36:40,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2020-10-13 06:36:40,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2425. [2020-10-13 06:36:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2425 states. [2020-10-13 06:36:40,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 3778 transitions. [2020-10-13 06:36:40,855 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 3778 transitions. Word has length 799 [2020-10-13 06:36:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:36:40,856 INFO L479 AbstractCegarLoop]: Abstraction has 2425 states and 3778 transitions. [2020-10-13 06:36:40,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:36:40,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 3778 transitions. [2020-10-13 06:36:40,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2020-10-13 06:36:40,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:36:40,871 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:36:40,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 06:36:40,871 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:36:40,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:36:40,872 INFO L82 PathProgramCache]: Analyzing trace with hash 210743363, now seen corresponding path program 1 times [2020-10-13 06:36:40,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:36:40,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974680608] [2020-10-13 06:36:40,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:36:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:41,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:41,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:44,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:46,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:46,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 825 [2020-10-13 06:36:46,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:36:46,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-13 06:36:46,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:46,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:36:46,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:36:46,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:36:46,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:36:46,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:36:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:46,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:46,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:36:46,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:36:46,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 06:36:46,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:46,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:36:46,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:36:46,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:36:46,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 06:36:46,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:36:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:46,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:46,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:46,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:36:46,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:36:46,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 06:36:46,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:46,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:36:46,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:36:46,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:36:46,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:36:46,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:36:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:36:46,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:36:46,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:36:46,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 06:36:46,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:36:46,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:36:46,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:36:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:36:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:36:46,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 06:36:46,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:36:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:36:47,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974680608] [2020-10-13 06:36:47,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:36:47,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:36:47,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90163044] [2020-10-13 06:36:47,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:36:47,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:36:47,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:36:47,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:36:47,042 INFO L87 Difference]: Start difference. First operand 2425 states and 3778 transitions. Second operand 7 states. [2020-10-13 06:37:03,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:37:03,598 INFO L93 Difference]: Finished difference Result 7584 states and 13201 transitions. [2020-10-13 06:37:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:37:03,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 807 [2020-10-13 06:37:03,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:37:03,633 INFO L225 Difference]: With dead ends: 7584 [2020-10-13 06:37:03,633 INFO L226 Difference]: Without dead ends: 5892 [2020-10-13 06:37:03,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 06:37:03,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2020-10-13 06:37:03,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 5860. [2020-10-13 06:37:03,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5860 states. [2020-10-13 06:37:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5860 states to 5860 states and 8273 transitions. [2020-10-13 06:37:03,816 INFO L78 Accepts]: Start accepts. Automaton has 5860 states and 8273 transitions. Word has length 807 [2020-10-13 06:37:03,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:37:03,816 INFO L479 AbstractCegarLoop]: Abstraction has 5860 states and 8273 transitions. [2020-10-13 06:37:03,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:37:03,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5860 states and 8273 transitions. [2020-10-13 06:37:03,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2020-10-13 06:37:03,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:37:03,840 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:03,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 06:37:03,840 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:37:03,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:37:03,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1835386167, now seen corresponding path program 1 times [2020-10-13 06:37:03,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:37:03,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518338620] [2020-10-13 06:37:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:37:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:03,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:03,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:06,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:07,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:08,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:08,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-13 06:37:08,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:37:08,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 06:37:08,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:08,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:37:08,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:37:08,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 06:37:08,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:09,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:37:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:09,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:09,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:09,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:37:09,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:09,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:37:09,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:09,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:09,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:37:09,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:37:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:09,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:09,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:09,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:37:09,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 06:37:09,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:37:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:37:09,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:37:09,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:37:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:09,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:09,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 06:37:09,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:09,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 06:37:09,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:09,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:37:09,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:37:09,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 06:37:09,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:37:09,823 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:37:09,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518338620] [2020-10-13 06:37:09,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:37:09,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:37:09,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238792927] [2020-10-13 06:37:09,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:37:09,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:37:09,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:37:09,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:37:09,826 INFO L87 Difference]: Start difference. First operand 5860 states and 8273 transitions. Second operand 7 states. [2020-10-13 06:37:19,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:37:19,421 INFO L93 Difference]: Finished difference Result 12847 states and 18620 transitions. [2020-10-13 06:37:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:37:19,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 813 [2020-10-13 06:37:19,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:37:19,460 INFO L225 Difference]: With dead ends: 12847 [2020-10-13 06:37:19,460 INFO L226 Difference]: Without dead ends: 7720 [2020-10-13 06:37:19,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 06:37:19,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7720 states. [2020-10-13 06:37:19,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7720 to 7641. [2020-10-13 06:37:19,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7641 states. [2020-10-13 06:37:19,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7641 states to 7641 states and 9806 transitions. [2020-10-13 06:37:19,677 INFO L78 Accepts]: Start accepts. Automaton has 7641 states and 9806 transitions. Word has length 813 [2020-10-13 06:37:19,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:37:19,677 INFO L479 AbstractCegarLoop]: Abstraction has 7641 states and 9806 transitions. [2020-10-13 06:37:19,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:37:19,678 INFO L276 IsEmpty]: Start isEmpty. Operand 7641 states and 9806 transitions. [2020-10-13 06:37:19,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-10-13 06:37:19,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:37:19,702 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:19,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 06:37:19,703 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:37:19,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:37:19,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1423323061, now seen corresponding path program 1 times [2020-10-13 06:37:19,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:37:19,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48130773] [2020-10-13 06:37:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:37:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:19,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:20,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:21,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:23,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:24,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:24,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 832 [2020-10-13 06:37:24,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:37:24,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 06:37:24,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:37:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 06:37:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:37:24,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:25,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:37:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:25,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:25,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:25,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:37:25,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:25,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:37:25,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:25,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:25,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:25,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:25,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:25,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:37:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:25,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:25,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:25,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:37:25,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:25,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 06:37:25,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:25,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:37:25,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:25,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 06:37:25,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:25,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:37:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:25,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:25,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:25,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 06:37:25,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:25,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 06:37:25,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:25,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:37:25,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:37:25,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 06:37:25,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:25,576 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 06:37:25,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48130773] [2020-10-13 06:37:25,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:37:25,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:37:25,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208028745] [2020-10-13 06:37:25,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:37:25,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:37:25,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:37:25,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:37:25,579 INFO L87 Difference]: Start difference. First operand 7641 states and 9806 transitions. Second operand 7 states. [2020-10-13 06:37:37,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:37:37,041 INFO L93 Difference]: Finished difference Result 20937 states and 27914 transitions. [2020-10-13 06:37:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:37:37,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 814 [2020-10-13 06:37:37,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:37:37,094 INFO L225 Difference]: With dead ends: 20937 [2020-10-13 06:37:37,095 INFO L226 Difference]: Without dead ends: 14029 [2020-10-13 06:37:37,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 06:37:37,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14029 states. [2020-10-13 06:37:37,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14029 to 13859. [2020-10-13 06:37:37,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13859 states. [2020-10-13 06:37:37,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13859 states to 13859 states and 17698 transitions. [2020-10-13 06:37:37,409 INFO L78 Accepts]: Start accepts. Automaton has 13859 states and 17698 transitions. Word has length 814 [2020-10-13 06:37:37,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:37:37,410 INFO L479 AbstractCegarLoop]: Abstraction has 13859 states and 17698 transitions. [2020-10-13 06:37:37,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:37:37,410 INFO L276 IsEmpty]: Start isEmpty. Operand 13859 states and 17698 transitions. [2020-10-13 06:37:37,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2020-10-13 06:37:37,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:37:37,445 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:37:37,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 06:37:37,446 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:37:37,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:37:37,447 INFO L82 PathProgramCache]: Analyzing trace with hash -280627772, now seen corresponding path program 1 times [2020-10-13 06:37:37,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:37:37,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999390658] [2020-10-13 06:37:37,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:37:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:37,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:38,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:42,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:42,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 862 [2020-10-13 06:37:42,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:37:42,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 06:37:42,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:42,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:37:42,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 06:37:42,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 06:37:42,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:42,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:37:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:42,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:42,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:42,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:37:42,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:42,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:37:42,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:42,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:42,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:42,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:42,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:42,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:37:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:42,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:42,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:42,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:37:42,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:42,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 06:37:42,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:37:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:42,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:37:42,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:42,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 06:37:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:42,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:42,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 06:37:42,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:42,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:37:42,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:37:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:37:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 06:37:42,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:42,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 06:37:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:42,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:42,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:42,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:37:42,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:42,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:37:42,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 06:37:42,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:42,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 62 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-13 06:37:43,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999390658] [2020-10-13 06:37:43,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:37:43,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:37:43,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305842320] [2020-10-13 06:37:43,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:37:43,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:37:43,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:37:43,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:37:43,121 INFO L87 Difference]: Start difference. First operand 13859 states and 17698 transitions. Second operand 7 states. [2020-10-13 06:37:53,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:37:53,760 INFO L93 Difference]: Finished difference Result 30161 states and 41296 transitions. [2020-10-13 06:37:53,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 06:37:53,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 842 [2020-10-13 06:37:53,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:37:53,811 INFO L225 Difference]: With dead ends: 30161 [2020-10-13 06:37:53,811 INFO L226 Difference]: Without dead ends: 17035 [2020-10-13 06:37:53,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 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 06:37:53,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17035 states. [2020-10-13 06:37:54,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17035 to 16787. [2020-10-13 06:37:54,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16787 states. [2020-10-13 06:37:54,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16787 states to 16787 states and 21685 transitions. [2020-10-13 06:37:54,222 INFO L78 Accepts]: Start accepts. Automaton has 16787 states and 21685 transitions. Word has length 842 [2020-10-13 06:37:54,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:37:54,222 INFO L479 AbstractCegarLoop]: Abstraction has 16787 states and 21685 transitions. [2020-10-13 06:37:54,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:37:54,223 INFO L276 IsEmpty]: Start isEmpty. Operand 16787 states and 21685 transitions. [2020-10-13 06:37:54,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2020-10-13 06:37:54,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:37:54,266 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:37:54,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 06:37:54,267 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:37:54,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:37:54,267 INFO L82 PathProgramCache]: Analyzing trace with hash -639168530, now seen corresponding path program 1 times [2020-10-13 06:37:54,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:37:54,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658165480] [2020-10-13 06:37:54,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:37:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:54,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:54,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:54,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:58,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:59,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:59,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 864 [2020-10-13 06:37:59,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:37:59,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 06:37:59,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:37:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 06:37:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 06:37:59,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:59,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:37:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:59,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:59,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:59,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:37:59,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:59,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 06:37:59,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:59,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:37:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:59,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:59,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:59,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:37:59,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:59,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:37:59,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:37:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:37:59,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:59,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:37:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:59,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:59,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:59,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:37:59,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:59,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:37:59,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:59,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:37:59,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:37:59,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 06:37:59,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:59,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:37:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:37:59,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:37:59,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:37:59,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:37:59,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:37:59,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 06:37:59,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:37:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:37:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:37:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 06:37:59,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:37:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 06:37:59,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658165480] [2020-10-13 06:37:59,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:37:59,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:37:59,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818624763] [2020-10-13 06:37:59,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:37:59,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:37:59,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:37:59,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:37:59,999 INFO L87 Difference]: Start difference. First operand 16787 states and 21685 transitions. Second operand 8 states. [2020-10-13 06:38:15,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:15,125 INFO L93 Difference]: Finished difference Result 38154 states and 51833 transitions. [2020-10-13 06:38:15,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 06:38:15,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 844 [2020-10-13 06:38:15,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:15,196 INFO L225 Difference]: With dead ends: 38154 [2020-10-13 06:38:15,197 INFO L226 Difference]: Without dead ends: 22100 [2020-10-13 06:38:15,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-13 06:38:15,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22100 states. [2020-10-13 06:38:15,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22100 to 22018. [2020-10-13 06:38:15,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22018 states. [2020-10-13 06:38:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22018 states to 22018 states and 27667 transitions. [2020-10-13 06:38:15,661 INFO L78 Accepts]: Start accepts. Automaton has 22018 states and 27667 transitions. Word has length 844 [2020-10-13 06:38:15,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:15,661 INFO L479 AbstractCegarLoop]: Abstraction has 22018 states and 27667 transitions. [2020-10-13 06:38:15,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:38:15,662 INFO L276 IsEmpty]: Start isEmpty. Operand 22018 states and 27667 transitions. [2020-10-13 06:38:15,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 935 [2020-10-13 06:38:15,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:15,709 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:38:15,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 06:38:15,709 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:15,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:15,710 INFO L82 PathProgramCache]: Analyzing trace with hash -543146228, now seen corresponding path program 1 times [2020-10-13 06:38:15,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:15,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044902685] [2020-10-13 06:38:15,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:15,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:16,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:16,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:20,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:20,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:20,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 954 [2020-10-13 06:38:20,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:38:20,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-13 06:38:20,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:20,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:20,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-13 06:38:20,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:38:20,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:21,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:38:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:21,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:21,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:21,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:38:21,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:21,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 06:38:21,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:21,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:38:21,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:38:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:21,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:21,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 06:38:21,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:21,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:38:21,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:21,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:21,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:38:21,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 06:38:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:21,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:21,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:21,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 06:38:21,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:21,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 06:38:21,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:38:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 06:38:21,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:21,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-13 06:38:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:21,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:21,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:21,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 06:38:21,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:21,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:38:21,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:21,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:21,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:38:21,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:38:21,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-13 06:38:21,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044902685] [2020-10-13 06:38:21,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:38:21,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:38:21,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836801995] [2020-10-13 06:38:21,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:38:21,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:38:21,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:38:21,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:38:21,833 INFO L87 Difference]: Start difference. First operand 22018 states and 27667 transitions. Second operand 7 states. [2020-10-13 06:38:32,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:32,675 INFO L93 Difference]: Finished difference Result 63845 states and 83190 transitions. [2020-10-13 06:38:32,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:38:32,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 934 [2020-10-13 06:38:32,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:32,814 INFO L225 Difference]: With dead ends: 63845 [2020-10-13 06:38:32,814 INFO L226 Difference]: Without dead ends: 42560 [2020-10-13 06:38:32,860 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 06:38:32,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42560 states. [2020-10-13 06:38:33,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42560 to 36584. [2020-10-13 06:38:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36584 states. [2020-10-13 06:38:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36584 states to 36584 states and 45098 transitions. [2020-10-13 06:38:33,810 INFO L78 Accepts]: Start accepts. Automaton has 36584 states and 45098 transitions. Word has length 934 [2020-10-13 06:38:33,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:33,811 INFO L479 AbstractCegarLoop]: Abstraction has 36584 states and 45098 transitions. [2020-10-13 06:38:33,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 06:38:33,811 INFO L276 IsEmpty]: Start isEmpty. Operand 36584 states and 45098 transitions. [2020-10-13 06:38:33,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2020-10-13 06:38:33,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:33,866 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:38:33,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 06:38:33,866 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:33,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:33,867 INFO L82 PathProgramCache]: Analyzing trace with hash 876757577, now seen corresponding path program 1 times [2020-10-13 06:38:33,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:33,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775691138] [2020-10-13 06:38:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:34,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:34,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:34,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:34,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:39,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:39,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1028 [2020-10-13 06:38:39,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 06:38:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 06:38:39,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 06:38:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 06:38:39,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:39,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:38:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:39,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:39,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:39,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:38:39,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:39,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:38:39,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:39,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:39,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:39,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:39,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:39,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:38:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:39,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:39,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:39,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:38:39,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:39,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:38:39,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:39,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:39,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:39,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:39,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:39,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:38:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:39,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:39,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:39,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:38:39,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:39,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:38:39,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:38:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:38:39,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:39,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:38:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:39,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:39,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:39,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 06:38:39,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:39,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 06:38:39,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:38:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:38:39,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 06:38:39,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:39,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-13 06:38:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:38:39,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:38:39,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:38:39,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 06:38:39,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:38:39,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 06:38:39,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:38:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:38:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:38:39,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 06:38:39,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:38:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-13 06:38:40,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775691138] [2020-10-13 06:38:40,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:38:40,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:38:40,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291268099] [2020-10-13 06:38:40,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:38:40,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:38:40,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:38:40,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:38:40,041 INFO L87 Difference]: Start difference. First operand 36584 states and 45098 transitions. Second operand 8 states. [2020-10-13 06:38:56,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:38:56,733 INFO L93 Difference]: Finished difference Result 109833 states and 138402 transitions. [2020-10-13 06:38:56,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 06:38:56,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1006 [2020-10-13 06:38:56,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:38:56,965 INFO L225 Difference]: With dead ends: 109833 [2020-10-13 06:38:56,966 INFO L226 Difference]: Without dead ends: 73982 [2020-10-13 06:38:57,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 06:38:57,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73982 states. [2020-10-13 06:38:58,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73982 to 72234. [2020-10-13 06:38:58,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72234 states. [2020-10-13 06:38:58,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72234 states to 72234 states and 87172 transitions. [2020-10-13 06:38:58,265 INFO L78 Accepts]: Start accepts. Automaton has 72234 states and 87172 transitions. Word has length 1006 [2020-10-13 06:38:58,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:38:58,266 INFO L479 AbstractCegarLoop]: Abstraction has 72234 states and 87172 transitions. [2020-10-13 06:38:58,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 06:38:58,266 INFO L276 IsEmpty]: Start isEmpty. Operand 72234 states and 87172 transitions. [2020-10-13 06:38:58,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2831 [2020-10-13 06:38:58,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:38:58,462 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:58,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 06:38:58,462 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:38:58,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:38:58,463 INFO L82 PathProgramCache]: Analyzing trace with hash 2140887489, now seen corresponding path program 1 times [2020-10-13 06:38:58,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:38:58,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705370080] [2020-10-13 06:38:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:38:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:01,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:01,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:01,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:02,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:03,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:03,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:03,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 2876 [2020-10-13 06:39:03,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 06:39:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 06:39:03,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2068 [2020-10-13 06:39:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 06:39:03,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:04,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:39:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:04,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:04,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:39:04,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:04,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 06:39:04,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:04,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:04,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:04,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:39:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:04,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:04,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:04,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 06:39:04,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:04,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:39:04,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:04,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:04,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:04,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:04,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:04,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 06:39:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:04,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:04,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:04,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 06:39:04,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:04,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 06:39:04,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:04,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:04,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 06:39:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:04,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:04,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 631 [2020-10-13 06:39:04,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:04,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 06:39:04,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:04,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:04,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 06:39:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:04,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:04,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:04,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-13 06:39:04,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:04,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 06:39:04,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:04,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:04,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:04,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:04,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:05,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 06:39:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:05,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:05,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:05,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 06:39:05,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:05,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 06:39:05,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:05,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:05,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:05,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-10-13 06:39:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:05,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:05,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:05,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 06:39:05,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:05,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 06:39:05,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:05,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:05,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2020-10-13 06:39:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:05,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:05,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:05,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 06:39:05,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:05,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 06:39:05,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:05,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:05,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:05,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:05,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:05,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 06:39:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:05,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:05,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:05,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 06:39:05,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:05,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 06:39:05,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:05,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:05,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:05,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 939 [2020-10-13 06:39:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:05,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:05,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:05,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 707 [2020-10-13 06:39:05,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:05,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 06:39:05,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:05,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:05,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:05,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:05,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:05,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 06:39:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:05,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:05,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:05,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-13 06:39:05,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:05,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 06:39:05,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:05,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:05,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:05,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 06:39:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:05,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:06,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:06,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-13 06:39:06,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 06:39:06,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:06,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 06:39:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:06,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:06,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:06,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 06:39:06,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:06,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 06:39:06,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:06,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:06,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:06,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:06,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1639 [2020-10-13 06:39:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:06,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:06,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:06,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 06:39:06,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:06,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 06:39:06,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:06,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:06,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:06,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:06,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1746 [2020-10-13 06:39:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:06,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:06,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:06,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 06:39:06,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:06,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:39:06,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:39:06,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:06,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:39:06,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:06,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1824 [2020-10-13 06:39:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:06,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:06,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:06,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-13 06:39:06,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:06,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 06:39:06,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:06,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:39:06,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:39:06,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-13 06:39:06,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:06,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2038 [2020-10-13 06:39:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:39:06,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:39:06,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:39:06,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 06:39:06,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:39:06,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 06:39:06,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:39:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:39:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:39:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 06:39:06,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:39:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5183 backedges. 2191 proven. 2 refuted. 0 times theorem prover too weak. 2990 trivial. 0 not checked. [2020-10-13 06:39:09,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705370080] [2020-10-13 06:39:09,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:39:09,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 06:39:09,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349514758] [2020-10-13 06:39:09,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 06:39:09,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:39:09,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 06:39:09,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:39:09,847 INFO L87 Difference]: Start difference. First operand 72234 states and 87172 transitions. Second operand 7 states. [2020-10-13 06:39:23,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:39:23,245 INFO L93 Difference]: Finished difference Result 180075 states and 219509 transitions. [2020-10-13 06:39:23,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 06:39:23,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 2830 [2020-10-13 06:39:23,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted.