/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:25:48,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:25:48,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:25:49,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:25:49,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:25:49,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:25:49,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:25:49,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:25:49,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:25:49,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:25:49,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:25:49,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:25:49,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:25:49,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:25:49,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:25:49,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:25:49,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:25:49,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:25:49,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:25:49,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:25:49,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:25:49,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:25:49,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:25:49,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:25:49,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:25:49,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:25:49,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:25:49,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:25:49,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:25:49,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:25:49,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:25:49,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:25:49,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:25:49,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:25:49,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:25:49,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:25:49,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:25:49,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:25:49,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:25:49,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:25:49,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:25:49,109 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 [2020-10-26 23:25:49,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:25:49,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:25:49,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:25:49,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:25:49,139 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:25:49,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:25:49,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:25:49,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:25:49,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:25:49,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:25:49,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:25:49,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:25:49,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:25:49,141 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:25:49,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:25:49,142 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:25:49,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:25:49,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:25:49,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:25:49,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:25:49,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:25:49,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:25:49,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:25:49,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:25:49,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:25:49,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:25:49,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:25:49,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:25:49,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:25:49,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:25:49,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:25:49,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:25:49,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:25:49,682 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:25:49,682 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:25:49,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label26.c [2020-10-26 23:25:49,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/769991cfc/0805fe4e5d444faa9e8a9e3f8e24d07a/FLAG8bbccc9cb [2020-10-26 23:25:50,424 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:25:50,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label26.c [2020-10-26 23:25:50,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/769991cfc/0805fe4e5d444faa9e8a9e3f8e24d07a/FLAG8bbccc9cb [2020-10-26 23:25:50,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/769991cfc/0805fe4e5d444faa9e8a9e3f8e24d07a [2020-10-26 23:25:50,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:25:50,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:25:50,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:25:50,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:25:50,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:25:50,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:25:50" (1/1) ... [2020-10-26 23:25:50,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51498653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:50, skipping insertion in model container [2020-10-26 23:25:50,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:25:50" (1/1) ... [2020-10-26 23:25:50,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:25:50,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:25:51,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:25:51,221 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:25:51,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:25:51,494 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:25:51,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51 WrapperNode [2020-10-26 23:25:51,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:25:51,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:25:51,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:25:51,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:25:51,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (1/1) ... [2020-10-26 23:25:51,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (1/1) ... [2020-10-26 23:25:51,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (1/1) ... [2020-10-26 23:25:51,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (1/1) ... [2020-10-26 23:25:51,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (1/1) ... [2020-10-26 23:25:51,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (1/1) ... [2020-10-26 23:25:51,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (1/1) ... [2020-10-26 23:25:51,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:25:51,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:25:51,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:25:51,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:25:51,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:25:51,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:25:51,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:25:51,763 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:25:51,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:25:51,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:25:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:25:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:25:51,764 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:25:51,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:25:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:25:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:25:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:25:51,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:25:53,419 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:25:53,419 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:25:53,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:25:53 BoogieIcfgContainer [2020-10-26 23:25:53,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:25:53,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:25:53,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:25:53,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:25:53,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:25:50" (1/3) ... [2020-10-26 23:25:53,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ea27a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:25:53, skipping insertion in model container [2020-10-26 23:25:53,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:25:51" (2/3) ... [2020-10-26 23:25:53,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ea27a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:25:53, skipping insertion in model container [2020-10-26 23:25:53,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:25:53" (3/3) ... [2020-10-26 23:25:53,437 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label26.c [2020-10-26 23:25:53,452 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:25:53,459 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:25:53,473 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:25:53,504 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:25:53,505 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:25:53,505 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:25:53,505 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:25:53,505 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:25:53,505 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:25:53,506 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:25:53,506 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:25:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:25:53,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-26 23:25:53,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:53,543 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] [2020-10-26 23:25:53,544 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:53,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:53,551 INFO L82 PathProgramCache]: Analyzing trace with hash 54203678, now seen corresponding path program 1 times [2020-10-26 23:25:53,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:53,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988219116] [2020-10-26 23:25:53,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:53,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:54,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:54,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-26 23:25:54,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:54,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-26 23:25:54,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:54,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:25:54,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:25:54,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:25:54,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:25:54,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:54,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:54,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:54,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:54,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:54,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:25:54,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:54,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:54,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:54,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:25:54,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:25:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:25:54,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988219116] [2020-10-26 23:25:54,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:25:54,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:25:54,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182663675] [2020-10-26 23:25:54,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:25:54,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:54,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:25:54,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:25:54,797 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-26 23:25:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:58,666 INFO L93 Difference]: Finished difference Result 891 states and 1618 transitions. [2020-10-26 23:25:58,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:25:58,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-26 23:25:58,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:58,690 INFO L225 Difference]: With dead ends: 891 [2020-10-26 23:25:58,690 INFO L226 Difference]: Without dead ends: 565 [2020-10-26 23:25:58,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:25:58,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-26 23:25:58,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 561. [2020-10-26 23:25:58,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-26 23:25:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 862 transitions. [2020-10-26 23:25:58,807 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 862 transitions. Word has length 73 [2020-10-26 23:25:58,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:58,808 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 862 transitions. [2020-10-26 23:25:58,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:25:58,808 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 862 transitions. [2020-10-26 23:25:58,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-26 23:25:58,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:58,819 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:58,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:25:58,819 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:58,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:58,820 INFO L82 PathProgramCache]: Analyzing trace with hash 684540359, now seen corresponding path program 1 times [2020-10-26 23:25:58,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:58,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573730451] [2020-10-26 23:25:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:58,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:58,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:00,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:01,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:01,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-26 23:26:01,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:26:01,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2281 [2020-10-26 23:26:01,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:26:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-26 23:26:01,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:01,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:01,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:01,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:01,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:01,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:01,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:26:01,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:01,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:01,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:01,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:01,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:01,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:01,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:01,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:01,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 23:26:01,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:26:01,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-26 23:26:01,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:26:01,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:26:01,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573730451] [2020-10-26 23:26:01,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:01,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:26:01,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797473475] [2020-10-26 23:26:01,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:26:01,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:01,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:26:01,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:26:01,883 INFO L87 Difference]: Start difference. First operand 561 states and 862 transitions. Second operand 6 states. [2020-10-26 23:26:04,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:04,243 INFO L93 Difference]: Finished difference Result 1494 states and 2306 transitions. [2020-10-26 23:26:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:26:04,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-10-26 23:26:04,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:04,254 INFO L225 Difference]: With dead ends: 1494 [2020-10-26 23:26:04,254 INFO L226 Difference]: Without dead ends: 939 [2020-10-26 23:26:04,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:26:04,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-10-26 23:26:04,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 935. [2020-10-26 23:26:04,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2020-10-26 23:26:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1316 transitions. [2020-10-26 23:26:04,319 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1316 transitions. Word has length 167 [2020-10-26 23:26:04,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:04,320 INFO L481 AbstractCegarLoop]: Abstraction has 935 states and 1316 transitions. [2020-10-26 23:26:04,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:26:04,321 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1316 transitions. [2020-10-26 23:26:04,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-26 23:26:04,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:04,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:04,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:26:04,329 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:04,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:04,329 INFO L82 PathProgramCache]: Analyzing trace with hash 404106083, now seen corresponding path program 1 times [2020-10-26 23:26:04,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:04,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137812280] [2020-10-26 23:26:04,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:04,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:05,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:05,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:05,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-26 23:26:05,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:26:05,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1540 [2020-10-26 23:26:05,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:26:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:05,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-26 23:26:05,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:06,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:06,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:06,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:06,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:06,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:06,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:26:06,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:06,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:06,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:06,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:06,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:06,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:06,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:06,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:26:06,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:26:06,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-26 23:26:06,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:06,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:06,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:06,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-26 23:26:06,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:06,837 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:26:06,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137812280] [2020-10-26 23:26:06,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:06,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:26:06,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380920478] [2020-10-26 23:26:06,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:26:06,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:06,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:26:06,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:26:06,841 INFO L87 Difference]: Start difference. First operand 935 states and 1316 transitions. Second operand 6 states. [2020-10-26 23:26:09,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:09,087 INFO L93 Difference]: Finished difference Result 2792 states and 3991 transitions. [2020-10-26 23:26:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 23:26:09,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2020-10-26 23:26:09,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:09,101 INFO L225 Difference]: With dead ends: 2792 [2020-10-26 23:26:09,101 INFO L226 Difference]: Without dead ends: 1863 [2020-10-26 23:26:09,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:09,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2020-10-26 23:26:09,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1679. [2020-10-26 23:26:09,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1679 states. [2020-10-26 23:26:09,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2223 transitions. [2020-10-26 23:26:09,193 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2223 transitions. Word has length 213 [2020-10-26 23:26:09,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:09,193 INFO L481 AbstractCegarLoop]: Abstraction has 1679 states and 2223 transitions. [2020-10-26 23:26:09,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:26:09,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2223 transitions. [2020-10-26 23:26:09,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-26 23:26:09,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:09,201 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:09,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:26:09,201 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:09,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:09,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1615319134, now seen corresponding path program 1 times [2020-10-26 23:26:09,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:09,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016996393] [2020-10-26 23:26:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:09,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:09,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:09,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:09,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:14,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:14,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-26 23:26:14,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:26:14,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 23:26:14,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:26:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:26:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:26:14,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:14,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:14,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:14,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:14,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:14,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:14,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:26:14,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:14,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:26:14,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:14,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:14,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:14,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:14,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:26:14,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:14,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:26:14,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:14,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:14,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:14,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:26:14,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:14,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-26 23:26:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:14,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:14,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:14,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 23:26:14,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:14,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:26:14,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:14,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 23:26:14,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:14,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 130 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:26:15,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016996393] [2020-10-26 23:26:15,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:15,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:15,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761249338] [2020-10-26 23:26:15,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:15,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:15,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:15,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:15,046 INFO L87 Difference]: Start difference. First operand 1679 states and 2223 transitions. Second operand 7 states. [2020-10-26 23:26:17,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:17,348 INFO L93 Difference]: Finished difference Result 2814 states and 3820 transitions. [2020-10-26 23:26:17,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:26:17,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-10-26 23:26:17,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:17,367 INFO L225 Difference]: With dead ends: 2814 [2020-10-26 23:26:17,367 INFO L226 Difference]: Without dead ends: 1875 [2020-10-26 23:26:17,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:26:17,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2020-10-26 23:26:17,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1867. [2020-10-26 23:26:17,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1867 states. [2020-10-26 23:26:17,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 2418 transitions. [2020-10-26 23:26:17,435 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 2418 transitions. Word has length 240 [2020-10-26 23:26:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:17,435 INFO L481 AbstractCegarLoop]: Abstraction has 1867 states and 2418 transitions. [2020-10-26 23:26:17,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 2418 transitions. [2020-10-26 23:26:17,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-26 23:26:17,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:17,443 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:17,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:26:17,443 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:17,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:17,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1059235000, now seen corresponding path program 1 times [2020-10-26 23:26:17,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:17,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960209396] [2020-10-26 23:26:17,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:17,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:17,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:18,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:19,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:19,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:19,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-26 23:26:19,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:26:19,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2248 [2020-10-26 23:26:19,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:26:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:26:19,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:19,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:19,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:19,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:19,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:19,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:19,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:26:19,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:19,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:19,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:19,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:19,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:19,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:26:19,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:19,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:26:19,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:19,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:19,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:19,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:26:19,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:20,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:26:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:20,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:20,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:20,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:20,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 23:26:20,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:26:20,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-26 23:26:20,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:20,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-26 23:26:20,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:26:20,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960209396] [2020-10-26 23:26:20,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:20,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:20,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700647491] [2020-10-26 23:26:20,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:20,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:20,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:20,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:20,677 INFO L87 Difference]: Start difference. First operand 1867 states and 2418 transitions. Second operand 7 states. [2020-10-26 23:26:22,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:22,706 INFO L93 Difference]: Finished difference Result 2896 states and 3926 transitions. [2020-10-26 23:26:22,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:26:22,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 297 [2020-10-26 23:26:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:22,714 INFO L225 Difference]: With dead ends: 2896 [2020-10-26 23:26:22,714 INFO L226 Difference]: Without dead ends: 1329 [2020-10-26 23:26:22,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:26:22,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2020-10-26 23:26:22,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1307. [2020-10-26 23:26:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1307 states. [2020-10-26 23:26:22,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1512 transitions. [2020-10-26 23:26:22,773 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1512 transitions. Word has length 297 [2020-10-26 23:26:22,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:22,773 INFO L481 AbstractCegarLoop]: Abstraction has 1307 states and 1512 transitions. [2020-10-26 23:26:22,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:22,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1512 transitions. [2020-10-26 23:26:22,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-10-26 23:26:22,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:22,784 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:22,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:26:22,784 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:22,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:22,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1039215704, now seen corresponding path program 1 times [2020-10-26 23:26:22,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:22,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557289915] [2020-10-26 23:26:22,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:22,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:23,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:23,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:23,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:27,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:27,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-10-26 23:26:27,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:26:27,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-26 23:26:27,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:26:27,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:26:27,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:26:28,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:28,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:28,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:28,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:28,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:26:28,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:28,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:28,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:28,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:28,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:28,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:28,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:26:28,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:28,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:28,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:28,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:28,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:26:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:28,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:28,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:28,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:28,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:28,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:26:28,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:28,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:28,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:26:28,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:28,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:26:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:28,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:28,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:28,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:26:28,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:28,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:26:28,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:28,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:26:28,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:28,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-26 23:26:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:28,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:28,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:28,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 23:26:28,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:28,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:26:28,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:28,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:28,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 23:26:28,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:28,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:28,976 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 413 proven. 72 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-26 23:26:28,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557289915] [2020-10-26 23:26:28,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:28,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:26:28,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054555410] [2020-10-26 23:26:28,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:26:28,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:28,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:26:28,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:26:28,981 INFO L87 Difference]: Start difference. First operand 1307 states and 1512 transitions. Second operand 8 states. [2020-10-26 23:26:31,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:31,805 INFO L93 Difference]: Finished difference Result 2990 states and 3641 transitions. [2020-10-26 23:26:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:26:31,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 459 [2020-10-26 23:26:31,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:31,822 INFO L225 Difference]: With dead ends: 2990 [2020-10-26 23:26:31,823 INFO L226 Difference]: Without dead ends: 2055 [2020-10-26 23:26:31,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:26:31,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2020-10-26 23:26:31,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 2055. [2020-10-26 23:26:31,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2055 states. [2020-10-26 23:26:31,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 2376 transitions. [2020-10-26 23:26:31,891 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 2376 transitions. Word has length 459 [2020-10-26 23:26:31,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:31,893 INFO L481 AbstractCegarLoop]: Abstraction has 2055 states and 2376 transitions. [2020-10-26 23:26:31,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:26:31,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 2376 transitions. [2020-10-26 23:26:31,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2020-10-26 23:26:31,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:31,910 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 23:26:31,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:26:31,911 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:31,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:31,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1624861462, now seen corresponding path program 1 times [2020-10-26 23:26:31,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:31,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437369876] [2020-10-26 23:26:31,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:32,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:32,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:32,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:37,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:37,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 599 [2020-10-26 23:26:37,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:26:37,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-26 23:26:37,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:37,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:26:37,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:26:37,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:37,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:37,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:37,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:37,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:37,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:37,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:26:37,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:37,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:37,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:26:37,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:37,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:37,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:37,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:37,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:37,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:26:37,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:37,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:37,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:37,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:26:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:37,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:37,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:37,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:37,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:37,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:26:37,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:37,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:26:37,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:37,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:26:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:37,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:37,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:37,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:37,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:37,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:26:37,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:37,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:37,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:37,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:26:37,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:37,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:26:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:37,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:37,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:37,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:26:37,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:37,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:26:37,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:37,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:37,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:26:37,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:37,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 486 proven. 109 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2020-10-26 23:26:38,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437369876] [2020-10-26 23:26:38,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:38,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:38,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529354764] [2020-10-26 23:26:38,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:38,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:38,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:38,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:38,300 INFO L87 Difference]: Start difference. First operand 2055 states and 2376 transitions. Second operand 7 states. [2020-10-26 23:26:41,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:41,480 INFO L93 Difference]: Finished difference Result 5051 states and 6062 transitions. [2020-10-26 23:26:41,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:26:41,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 581 [2020-10-26 23:26:41,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:41,513 INFO L225 Difference]: With dead ends: 5051 [2020-10-26 23:26:41,513 INFO L226 Difference]: Without dead ends: 3368 [2020-10-26 23:26:41,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:26:41,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3368 states. [2020-10-26 23:26:41,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3368 to 3357. [2020-10-26 23:26:41,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3357 states. [2020-10-26 23:26:41,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 4002 transitions. [2020-10-26 23:26:41,638 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 4002 transitions. Word has length 581 [2020-10-26 23:26:41,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:41,639 INFO L481 AbstractCegarLoop]: Abstraction has 3357 states and 4002 transitions. [2020-10-26 23:26:41,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:41,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 4002 transitions. [2020-10-26 23:26:41,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2020-10-26 23:26:41,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:41,658 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:41,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:26:41,658 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:41,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:41,659 INFO L82 PathProgramCache]: Analyzing trace with hash -706463308, now seen corresponding path program 1 times [2020-10-26 23:26:41,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:41,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644931171] [2020-10-26 23:26:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:41,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:42,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:43,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:44,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 606 [2020-10-26 23:26:46,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:26:46,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-26 23:26:46,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:26:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:26:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-26 23:26:46,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:46,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:46,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:46,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:46,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:26:46,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:46,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:46,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:46,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:46,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:46,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:46,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:47,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:47,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:47,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:47,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:26:47,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:47,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:47,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:26:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:47,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:47,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:47,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:47,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:47,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:26:47,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:47,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:26:47,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:47,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:26:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:47,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:47,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:26:47,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:47,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 23:26:47,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:26:47,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:47,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:26:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:47,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:47,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:47,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:26:47,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:47,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-26 23:26:47,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:47,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:26:47,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 803 proven. 6 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 23:26:47,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644931171] [2020-10-26 23:26:47,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:47,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:26:47,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034885663] [2020-10-26 23:26:47,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:26:47,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:47,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:26:47,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:26:47,923 INFO L87 Difference]: Start difference. First operand 3357 states and 4002 transitions. Second operand 8 states. [2020-10-26 23:26:50,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:50,139 INFO L93 Difference]: Finished difference Result 8019 states and 9694 transitions. [2020-10-26 23:26:50,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:26:50,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 588 [2020-10-26 23:26:50,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:50,165 INFO L225 Difference]: With dead ends: 8019 [2020-10-26 23:26:50,166 INFO L226 Difference]: Without dead ends: 5034 [2020-10-26 23:26:50,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:26:50,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5034 states. [2020-10-26 23:26:50,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5034 to 5025. [2020-10-26 23:26:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5025 states. [2020-10-26 23:26:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5025 states to 5025 states and 5878 transitions. [2020-10-26 23:26:50,322 INFO L78 Accepts]: Start accepts. Automaton has 5025 states and 5878 transitions. Word has length 588 [2020-10-26 23:26:50,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:50,324 INFO L481 AbstractCegarLoop]: Abstraction has 5025 states and 5878 transitions. [2020-10-26 23:26:50,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:26:50,324 INFO L276 IsEmpty]: Start isEmpty. Operand 5025 states and 5878 transitions. [2020-10-26 23:26:50,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2020-10-26 23:26:50,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:50,334 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:26:50,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:26:50,334 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:50,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:50,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2072518332, now seen corresponding path program 1 times [2020-10-26 23:26:50,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:50,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497012477] [2020-10-26 23:26:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:50,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:50,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:51,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:52,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:55,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:55,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 666 [2020-10-26 23:26:55,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:26:55,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 23:26:55,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:55,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:55,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:26:55,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:26:55,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:55,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:26:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:55,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:55,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:55,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:26:55,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:55,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:26:55,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:55,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:55,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:26:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:55,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:55,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:55,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:26:55,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:55,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:26:55,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:55,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:26:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:55,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:55,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:55,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:26:55,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:55,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:26:55,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:26:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:26:55,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:26:55,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:55,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:26:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:56,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:56,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:26:56,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:56,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-26 23:26:56,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:26:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:26:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:26:56,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:56,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-26 23:26:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:56,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:26:56,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:26:56,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:26:56,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:26:56,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:26:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:26:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:26:56,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:26:56,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:26:56,780 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 486 proven. 176 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2020-10-26 23:26:56,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497012477] [2020-10-26 23:26:56,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:26:56,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:26:56,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632276005] [2020-10-26 23:26:56,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:26:56,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:26:56,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:26:56,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:26:56,783 INFO L87 Difference]: Start difference. First operand 5025 states and 5878 transitions. Second operand 7 states. [2020-10-26 23:26:58,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:26:58,858 INFO L93 Difference]: Finished difference Result 10234 states and 12055 transitions. [2020-10-26 23:26:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:26:58,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 648 [2020-10-26 23:26:58,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:26:58,889 INFO L225 Difference]: With dead ends: 10234 [2020-10-26 23:26:58,889 INFO L226 Difference]: Without dead ends: 5581 [2020-10-26 23:26:58,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:26:58,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5581 states. [2020-10-26 23:26:59,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5581 to 5581. [2020-10-26 23:26:59,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5581 states. [2020-10-26 23:26:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5581 states to 5581 states and 6492 transitions. [2020-10-26 23:26:59,052 INFO L78 Accepts]: Start accepts. Automaton has 5581 states and 6492 transitions. Word has length 648 [2020-10-26 23:26:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:26:59,054 INFO L481 AbstractCegarLoop]: Abstraction has 5581 states and 6492 transitions. [2020-10-26 23:26:59,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:26:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 5581 states and 6492 transitions. [2020-10-26 23:26:59,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2020-10-26 23:26:59,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:26:59,068 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:26:59,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:26:59,069 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:26:59,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:26:59,069 INFO L82 PathProgramCache]: Analyzing trace with hash 739416735, now seen corresponding path program 1 times [2020-10-26 23:26:59,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:26:59,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185253585] [2020-10-26 23:26:59,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:26:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:26:59,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:26:59,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:04,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:04,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 767 [2020-10-26 23:27:04,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:27:04,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-26 23:27:04,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:04,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:27:04,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:27:04,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-26 23:27:04,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:04,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:04,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:04,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:04,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:04,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:04,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:27:04,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:04,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:04,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:04,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:04,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:04,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:04,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:04,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:04,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:04,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:04,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:27:04,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:04,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:04,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:04,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:04,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:04,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:04,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:04,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:27:04,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:04,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:04,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:04,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:04,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:04,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:04,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:04,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:04,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:04,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:04,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:27:04,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:04,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:04,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:04,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:04,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:04,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:04,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:27:04,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:04,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:27:04,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:04,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:04,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:04,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:27:04,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:04,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:27:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:04,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:04,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:05,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:05,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:27:05,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:27:05,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-26 23:27:05,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:05,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:27:05,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:05,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:27:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:05,624 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-26 23:27:05,768 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-26 23:27:05,933 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-26 23:27:06,115 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-10-26 23:27:06,287 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-26 23:27:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1484 backedges. 823 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-26 23:27:08,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185253585] [2020-10-26 23:27:08,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:08,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:27:08,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78371199] [2020-10-26 23:27:08,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:27:08,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:08,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:27:08,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:27:08,057 INFO L87 Difference]: Start difference. First operand 5581 states and 6492 transitions. Second operand 13 states. [2020-10-26 23:27:08,774 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-26 23:27:09,237 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-26 23:27:09,625 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2020-10-26 23:27:09,909 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-10-26 23:27:10,196 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 92 [2020-10-26 23:27:10,612 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2020-10-26 23:27:10,981 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 108 [2020-10-26 23:27:12,098 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2020-10-26 23:27:12,780 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2020-10-26 23:27:13,115 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2020-10-26 23:27:13,433 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 88 [2020-10-26 23:27:13,920 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 91 [2020-10-26 23:27:14,324 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 94 [2020-10-26 23:27:14,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:14,772 INFO L93 Difference]: Finished difference Result 10976 states and 12824 transitions. [2020-10-26 23:27:14,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 23:27:14,773 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 747 [2020-10-26 23:27:14,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:14,812 INFO L225 Difference]: With dead ends: 10976 [2020-10-26 23:27:14,812 INFO L226 Difference]: Without dead ends: 5756 [2020-10-26 23:27:14,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2020-10-26 23:27:14,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5756 states. [2020-10-26 23:27:14,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5756 to 5756. [2020-10-26 23:27:14,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5756 states. [2020-10-26 23:27:14,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5756 states to 5756 states and 6679 transitions. [2020-10-26 23:27:14,977 INFO L78 Accepts]: Start accepts. Automaton has 5756 states and 6679 transitions. Word has length 747 [2020-10-26 23:27:14,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:14,979 INFO L481 AbstractCegarLoop]: Abstraction has 5756 states and 6679 transitions. [2020-10-26 23:27:14,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:27:14,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5756 states and 6679 transitions. [2020-10-26 23:27:14,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2020-10-26 23:27:14,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:14,995 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:14,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:27:14,995 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:14,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:14,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1749339779, now seen corresponding path program 1 times [2020-10-26 23:27:14,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:14,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311718227] [2020-10-26 23:27:14,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:15,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:15,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:15,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:16,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:16,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:20,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 783 [2020-10-26 23:27:20,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:27:20,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 23:27:20,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:20,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:27:20,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:27:20,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-26 23:27:20,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:20,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:20,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:20,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:20,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:20,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:27:20,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:20,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:20,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:20,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:20,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:20,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:20,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:27:20,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:20,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:20,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:20,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:20,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:20,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:20,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:20,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:20,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:27:20,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:20,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:20,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:20,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:20,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:20,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:20,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:20,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:20,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:20,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:27:20,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:20,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:20,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:20,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:27:20,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:20,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:20,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:20,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:27:20,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:27:20,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:27:20,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:20,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:20,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:20,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:27:20,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:20,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:27:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:20,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:20,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:27:20,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:20,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:27:20,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:20,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:27:20,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:20,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-10-26 23:27:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:20,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:20,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:27:20,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:20,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:27:20,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:20,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:20,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:27:20,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:20,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:20,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2020-10-26 23:27:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:20,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:20,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:20,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 23:27:20,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:20,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:27:20,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:20,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:20,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-26 23:27:20,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:20,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:21,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2290 backedges. 945 proven. 364 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2020-10-26 23:27:21,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311718227] [2020-10-26 23:27:21,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:21,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:27:21,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089109083] [2020-10-26 23:27:21,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:27:21,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:21,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:27:21,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:27:21,403 INFO L87 Difference]: Start difference. First operand 5756 states and 6679 transitions. Second operand 8 states. [2020-10-26 23:27:23,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:23,481 INFO L93 Difference]: Finished difference Result 11506 states and 13400 transitions. [2020-10-26 23:27:23,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:27:23,482 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 759 [2020-10-26 23:27:23,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:23,504 INFO L225 Difference]: With dead ends: 11506 [2020-10-26 23:27:23,504 INFO L226 Difference]: Without dead ends: 6122 [2020-10-26 23:27:23,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:27:23,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2020-10-26 23:27:23,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 5390. [2020-10-26 23:27:23,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5390 states. [2020-10-26 23:27:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 6245 transitions. [2020-10-26 23:27:23,730 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 6245 transitions. Word has length 759 [2020-10-26 23:27:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:23,731 INFO L481 AbstractCegarLoop]: Abstraction has 5390 states and 6245 transitions. [2020-10-26 23:27:23,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:27:23,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 6245 transitions. [2020-10-26 23:27:23,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2020-10-26 23:27:23,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:23,747 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:23,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:27:23,748 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:23,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:23,748 INFO L82 PathProgramCache]: Analyzing trace with hash -792198149, now seen corresponding path program 1 times [2020-10-26 23:27:23,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:23,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994245345] [2020-10-26 23:27:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:24,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:24,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:24,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:26,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:26,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:29,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:29,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 785 [2020-10-26 23:27:29,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:27:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-26 23:27:29,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:27:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:27:29,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:27:29,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:29,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:29,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:29,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:29,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:29,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:29,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:27:29,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:29,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:29,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:29,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:29,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:29,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:29,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:29,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:27:29,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:29,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:29,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:29,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:29,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:29,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:29,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:29,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:29,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:27:29,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:29,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:29,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:29,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:29,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:29,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:29,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:29,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:29,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:29,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:29,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:27:29,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:27:29,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:29,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:29,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:29,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:29,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:29,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:27:29,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:27:29,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-26 23:27:29,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:29,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:27:29,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:29,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:27:29,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:30,515 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-10-26 23:27:30,693 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-10-26 23:27:30,881 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-10-26 23:27:31,164 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-10-26 23:27:31,365 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2020-10-26 23:27:31,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:27:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:31,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:31,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:31,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:27:31,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:31,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:27:31,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:31,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:27:31,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:31,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:33,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1502 backedges. 674 proven. 176 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2020-10-26 23:27:33,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994245345] [2020-10-26 23:27:33,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:33,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:27:33,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750757504] [2020-10-26 23:27:33,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:27:33,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:33,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:27:33,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:27:33,699 INFO L87 Difference]: Start difference. First operand 5390 states and 6245 transitions. Second operand 13 states. [2020-10-26 23:27:33,931 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-10-26 23:27:34,838 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2020-10-26 23:27:35,602 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2020-10-26 23:27:36,052 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2020-10-26 23:27:36,344 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2020-10-26 23:27:36,682 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 99 [2020-10-26 23:27:37,037 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 113 [2020-10-26 23:27:37,386 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2020-10-26 23:27:37,718 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-10-26 23:27:38,537 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 82 [2020-10-26 23:27:39,190 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 86 [2020-10-26 23:27:39,642 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 89 [2020-10-26 23:27:39,967 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-26 23:27:40,305 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 92 [2020-10-26 23:27:40,644 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 95 [2020-10-26 23:27:41,236 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-10-26 23:27:41,644 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2020-10-26 23:27:41,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:41,926 INFO L93 Difference]: Finished difference Result 11142 states and 12897 transitions. [2020-10-26 23:27:41,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-26 23:27:41,926 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 765 [2020-10-26 23:27:41,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:41,943 INFO L225 Difference]: With dead ends: 11142 [2020-10-26 23:27:41,944 INFO L226 Difference]: Without dead ends: 6024 [2020-10-26 23:27:41,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=265, Invalid=665, Unknown=0, NotChecked=0, Total=930 [2020-10-26 23:27:41,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2020-10-26 23:27:42,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 5786. [2020-10-26 23:27:42,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5786 states. [2020-10-26 23:27:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5786 states to 5786 states and 6653 transitions. [2020-10-26 23:27:42,093 INFO L78 Accepts]: Start accepts. Automaton has 5786 states and 6653 transitions. Word has length 765 [2020-10-26 23:27:42,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:42,094 INFO L481 AbstractCegarLoop]: Abstraction has 5786 states and 6653 transitions. [2020-10-26 23:27:42,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:27:42,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5786 states and 6653 transitions. [2020-10-26 23:27:42,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2020-10-26 23:27:42,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:42,106 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:27:42,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:27:42,106 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:42,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:42,107 INFO L82 PathProgramCache]: Analyzing trace with hash 154639316, now seen corresponding path program 1 times [2020-10-26 23:27:42,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:42,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791006663] [2020-10-26 23:27:42,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:42,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:42,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:47,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 868 [2020-10-26 23:27:47,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:27:47,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-26 23:27:47,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:27:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-26 23:27:47,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:47,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:47,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:47,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:47,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:27:47,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:47,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:47,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:47,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:47,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:47,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:47,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:27:47,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:47,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:47,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:47,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:47,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:47,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:47,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:47,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:47,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:47,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:27:47,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:47,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:47,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:47,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:47,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:47,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:47,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:47,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:47,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:47,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:27:47,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:47,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:47,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:47,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:47,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:47,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:47,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:47,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:27:47,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:47,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:27:47,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:47,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:47,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:47,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:47,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:47,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:27:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:47,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:47,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:47,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:27:47,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:47,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 23:27:47,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:47,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:27:47,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:47,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:27:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:48,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:48,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:48,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:27:48,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:48,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 23:27:48,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:27:48,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:27:48,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:48,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1972 backedges. 989 proven. 2 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2020-10-26 23:27:48,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791006663] [2020-10-26 23:27:48,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:48,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:27:48,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802793921] [2020-10-26 23:27:48,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:27:48,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:48,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:27:48,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:27:48,562 INFO L87 Difference]: Start difference. First operand 5786 states and 6653 transitions. Second operand 7 states. [2020-10-26 23:27:50,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:50,795 INFO L93 Difference]: Finished difference Result 12852 states and 15016 transitions. [2020-10-26 23:27:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:27:50,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 846 [2020-10-26 23:27:50,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:50,821 INFO L225 Difference]: With dead ends: 12852 [2020-10-26 23:27:50,821 INFO L226 Difference]: Without dead ends: 7438 [2020-10-26 23:27:50,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:27:50,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7438 states. [2020-10-26 23:27:50,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7438 to 6890. [2020-10-26 23:27:50,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6890 states. [2020-10-26 23:27:50,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6890 states to 6890 states and 8025 transitions. [2020-10-26 23:27:50,984 INFO L78 Accepts]: Start accepts. Automaton has 6890 states and 8025 transitions. Word has length 846 [2020-10-26 23:27:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:50,985 INFO L481 AbstractCegarLoop]: Abstraction has 6890 states and 8025 transitions. [2020-10-26 23:27:50,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:27:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 6890 states and 8025 transitions. [2020-10-26 23:27:50,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2020-10-26 23:27:50,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:51,000 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:27:51,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:27:51,000 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:51,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:51,001 INFO L82 PathProgramCache]: Analyzing trace with hash 506007407, now seen corresponding path program 1 times [2020-10-26 23:27:51,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:51,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003067238] [2020-10-26 23:27:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:51,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:52,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:52,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 946 [2020-10-26 23:27:52,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:52,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1197 [2020-10-26 23:27:52,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:52,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:27:52,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:27:52,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:27:52,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:52,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:27:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:52,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:52,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:52,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:27:52,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:52,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:27:52,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:52,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:52,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:52,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:52,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:52,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:27:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:52,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:52,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:52,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:27:52,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:52,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:27:52,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:52,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:52,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:52,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:52,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:52,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:27:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:52,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:52,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:52,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:27:52,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:52,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:27:52,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:52,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:52,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:27:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:52,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:52,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:52,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:27:52,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:27:52,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:52,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:52,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:52,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:27:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:52,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:52,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:52,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:27:52,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:52,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:27:52,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:52,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:52,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:27:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:52,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:52,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:52,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:27:52,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:52,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:27:52,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:52,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:52,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:52,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:52,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:52,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:27:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:52,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:52,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:27:52,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:52,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:27:52,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:27:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:52,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:27:52,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:52,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:27:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:53,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:27:53,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:27:53,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:27:53,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:27:53,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:27:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:27:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:27:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:27:53,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:27:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2493 backedges. 466 proven. 7 refuted. 0 times theorem prover too weak. 2020 trivial. 0 not checked. [2020-10-26 23:27:53,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003067238] [2020-10-26 23:27:53,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:27:53,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:27:53,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48475154] [2020-10-26 23:27:53,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:27:53,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:27:53,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:27:53,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:27:53,529 INFO L87 Difference]: Start difference. First operand 6890 states and 8025 transitions. Second operand 5 states. [2020-10-26 23:27:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:27:55,342 INFO L93 Difference]: Finished difference Result 14138 states and 16687 transitions. [2020-10-26 23:27:55,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:27:55,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 922 [2020-10-26 23:27:55,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:27:55,369 INFO L225 Difference]: With dead ends: 14138 [2020-10-26 23:27:55,369 INFO L226 Difference]: Without dead ends: 7620 [2020-10-26 23:27:55,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:27:55,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7620 states. [2020-10-26 23:27:55,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7620 to 7620. [2020-10-26 23:27:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7620 states. [2020-10-26 23:27:55,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7620 states to 7620 states and 8884 transitions. [2020-10-26 23:27:55,555 INFO L78 Accepts]: Start accepts. Automaton has 7620 states and 8884 transitions. Word has length 922 [2020-10-26 23:27:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:27:55,558 INFO L481 AbstractCegarLoop]: Abstraction has 7620 states and 8884 transitions. [2020-10-26 23:27:55,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:27:55,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7620 states and 8884 transitions. [2020-10-26 23:27:55,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2020-10-26 23:27:55,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:27:55,578 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:27:55,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:27:55,578 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:27:55,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:27:55,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1745612712, now seen corresponding path program 1 times [2020-10-26 23:27:55,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:27:55,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403850786] [2020-10-26 23:27:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:27:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:27:55,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:56,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:27:58,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:00,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:00,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:00,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1042 [2020-10-26 23:28:00,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:00,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-26 23:28:00,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:28:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:28:00,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 348 [2020-10-26 23:28:00,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:01,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:01,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:01,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:01,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:01,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:01,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:28:01,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:01,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:01,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:01,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:01,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:01,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:01,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:01,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:01,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:01,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:01,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:28:01,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:01,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:01,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:01,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:01,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:01,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:01,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:01,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:01,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:01,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:01,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:28:01,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:01,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:01,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:01,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:01,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:01,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:01,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:01,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:28:01,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:01,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:01,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:01,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:01,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:01,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:01,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:01,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:01,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:01,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:01,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:28:01,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:01,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:01,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:01,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:01,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:01,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:01,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:01,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:01,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:01,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:01,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:28:01,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:01,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:01,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:01,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:01,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:01,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:01,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:01,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:28:01,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:01,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:28:01,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:01,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:28:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:01,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:01,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:01,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:28:01,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:01,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-26 23:28:01,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:01,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:28:01,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:01,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:28:01,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:01,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:28:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:01,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:02,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:02,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:02,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 23:28:02,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:02,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:28:02,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:02,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:28:02,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3185 backedges. 1592 proven. 136 refuted. 0 times theorem prover too weak. 1457 trivial. 0 not checked. [2020-10-26 23:28:02,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403850786] [2020-10-26 23:28:02,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:02,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:28:02,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363357794] [2020-10-26 23:28:02,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:28:02,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:02,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:28:02,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:28:02,774 INFO L87 Difference]: Start difference. First operand 7620 states and 8884 transitions. Second operand 9 states. [2020-10-26 23:28:06,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:06,666 INFO L93 Difference]: Finished difference Result 17448 states and 20644 transitions. [2020-10-26 23:28:06,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 23:28:06,667 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1016 [2020-10-26 23:28:06,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:06,714 INFO L225 Difference]: With dead ends: 17448 [2020-10-26 23:28:06,715 INFO L226 Difference]: Without dead ends: 10200 [2020-10-26 23:28:06,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-10-26 23:28:06,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10200 states. [2020-10-26 23:28:07,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10200 to 9650. [2020-10-26 23:28:07,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9650 states. [2020-10-26 23:28:07,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9650 states to 9650 states and 11435 transitions. [2020-10-26 23:28:07,032 INFO L78 Accepts]: Start accepts. Automaton has 9650 states and 11435 transitions. Word has length 1016 [2020-10-26 23:28:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:07,034 INFO L481 AbstractCegarLoop]: Abstraction has 9650 states and 11435 transitions. [2020-10-26 23:28:07,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:28:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 9650 states and 11435 transitions. [2020-10-26 23:28:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2020-10-26 23:28:07,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:07,058 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 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, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:07,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:28:07,059 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:07,059 INFO L82 PathProgramCache]: Analyzing trace with hash 555123431, now seen corresponding path program 1 times [2020-10-26 23:28:07,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:07,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177861212] [2020-10-26 23:28:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:07,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:07,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:07,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:08,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:12,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:12,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1062 [2020-10-26 23:28:12,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:12,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-26 23:28:12,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:12,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:28:12,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:28:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:28:12,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:12,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:12,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:12,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:12,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:12,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:12,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:28:12,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:12,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:12,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:12,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:12,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:12,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:12,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:12,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:12,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:12,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:28:12,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:12,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:12,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:12,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:12,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:12,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:12,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:12,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:28:12,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:12,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:12,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:12,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:12,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:12,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:12,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:12,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:12,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:28:12,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:12,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:12,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:12,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:12,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:12,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:12,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:12,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:28:12,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:12,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:12,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:12,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:12,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:12,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:12,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:12,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:12,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:12,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:12,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:28:12,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:12,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:12,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:12,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:12,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:12,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:12,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:12,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:12,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:12,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:12,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:28:12,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:12,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:12,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:12,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:28:12,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:12,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:28:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:12,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:12,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:12,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:28:12,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:28:12,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:28:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:12,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:28:12,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:13,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:28:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:13,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:13,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:13,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:13,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:13,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:13,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 23:28:13,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:13,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 875 [2020-10-26 23:28:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:13,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:13,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:13,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 23:28:13,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:13,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:28:13,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 23:28:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:13,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:14,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3839 backedges. 1709 proven. 251 refuted. 0 times theorem prover too weak. 1879 trivial. 0 not checked. [2020-10-26 23:28:14,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177861212] [2020-10-26 23:28:14,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:14,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:28:14,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385833035] [2020-10-26 23:28:14,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:28:14,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:14,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:28:14,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:28:14,169 INFO L87 Difference]: Start difference. First operand 9650 states and 11435 transitions. Second operand 10 states. [2020-10-26 23:28:18,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:18,045 INFO L93 Difference]: Finished difference Result 19252 states and 23026 transitions. [2020-10-26 23:28:18,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:28:18,046 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1034 [2020-10-26 23:28:18,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:18,078 INFO L225 Difference]: With dead ends: 19252 [2020-10-26 23:28:18,078 INFO L226 Difference]: Without dead ends: 9908 [2020-10-26 23:28:18,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:28:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9908 states. [2020-10-26 23:28:18,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9908 to 9284. [2020-10-26 23:28:18,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9284 states. [2020-10-26 23:28:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9284 states to 9284 states and 11038 transitions. [2020-10-26 23:28:18,312 INFO L78 Accepts]: Start accepts. Automaton has 9284 states and 11038 transitions. Word has length 1034 [2020-10-26 23:28:18,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:18,314 INFO L481 AbstractCegarLoop]: Abstraction has 9284 states and 11038 transitions. [2020-10-26 23:28:18,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:28:18,314 INFO L276 IsEmpty]: Start isEmpty. Operand 9284 states and 11038 transitions. [2020-10-26 23:28:18,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2020-10-26 23:28:18,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:18,336 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:18,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:28:18,336 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:18,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:18,337 INFO L82 PathProgramCache]: Analyzing trace with hash -263043195, now seen corresponding path program 1 times [2020-10-26 23:28:18,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:18,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247114308] [2020-10-26 23:28:18,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:18,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:19,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:20,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:23,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:23,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1095 [2020-10-26 23:28:23,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:23,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-26 23:28:23,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:23,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:28:23,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:28:23,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:28:23,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:23,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:23,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:23,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:23,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:23,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:23,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:28:23,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:23,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:23,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:23,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:23,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:23,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:23,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:23,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:28:23,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:23,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:23,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:23,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:23,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:24,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:24,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:24,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:28:24,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:24,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:24,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:24,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:24,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:24,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:24,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:24,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:24,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:24,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:28:24,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:24,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:24,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:24,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:24,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:24,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:24,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:28:24,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:24,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:24,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:24,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:24,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:24,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:24,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:28:24,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:24,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:24,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:24,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:24,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:24,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:24,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:28:24,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:24,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:24,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:28:24,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:24,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:28:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:24,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:28:24,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:24,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-26 23:28:24,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:24,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:28:24,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:24,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:28:24,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:24,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:28:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:24,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:24,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:24,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:24,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:24,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-26 23:28:24,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:24,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:24,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:24,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:24,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:24,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 908 [2020-10-26 23:28:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:25,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:25,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:25,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 23:28:25,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:25,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:28:25,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:25,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:25,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 23:28:25,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:25,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1745 proven. 251 refuted. 0 times theorem prover too weak. 1879 trivial. 0 not checked. [2020-10-26 23:28:26,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247114308] [2020-10-26 23:28:26,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:26,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:28:26,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688835212] [2020-10-26 23:28:26,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:28:26,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:26,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:28:26,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:28:26,154 INFO L87 Difference]: Start difference. First operand 9284 states and 11038 transitions. Second operand 10 states. [2020-10-26 23:28:29,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:29,622 INFO L93 Difference]: Finished difference Result 18781 states and 22375 transitions. [2020-10-26 23:28:29,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:28:29,623 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1067 [2020-10-26 23:28:29,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:29,651 INFO L225 Difference]: With dead ends: 18781 [2020-10-26 23:28:29,651 INFO L226 Difference]: Without dead ends: 9836 [2020-10-26 23:28:29,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:28:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9836 states. [2020-10-26 23:28:29,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9836 to 9284. [2020-10-26 23:28:29,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9284 states. [2020-10-26 23:28:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9284 states to 9284 states and 11032 transitions. [2020-10-26 23:28:29,887 INFO L78 Accepts]: Start accepts. Automaton has 9284 states and 11032 transitions. Word has length 1067 [2020-10-26 23:28:29,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:29,888 INFO L481 AbstractCegarLoop]: Abstraction has 9284 states and 11032 transitions. [2020-10-26 23:28:29,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:28:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 9284 states and 11032 transitions. [2020-10-26 23:28:29,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2020-10-26 23:28:29,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:29,912 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:29,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:28:29,913 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:29,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:29,913 INFO L82 PathProgramCache]: Analyzing trace with hash -281494045, now seen corresponding path program 1 times [2020-10-26 23:28:29,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:29,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477031930] [2020-10-26 23:28:29,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:30,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:30,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:31,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:32,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1096 [2020-10-26 23:28:35,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:28:35,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-26 23:28:35,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:28:35,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:28:35,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:28:35,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:35,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:28:35,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:35,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:35,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:35,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:28:35,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:35,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:35,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:35,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:28:35,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:35,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:35,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:28:35,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:35,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:35,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:35,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:35,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:28:35,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:35,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:35,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:28:35,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:35,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:35,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:35,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:28:35,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:28:35,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:35,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:28:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:35,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:35,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:35,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:28:35,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:35,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-26 23:28:35,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:35,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:28:35,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:35,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:28:35,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:36,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:28:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:36,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:36,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:36,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:36,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:36,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:28:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 23:28:36,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:36,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:36,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 909 [2020-10-26 23:28:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:36,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:36,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:36,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 23:28:36,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:36,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:28:36,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:36,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:36,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 23:28:36,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:36,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3876 backedges. 1772 proven. 225 refuted. 0 times theorem prover too weak. 1879 trivial. 0 not checked. [2020-10-26 23:28:37,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477031930] [2020-10-26 23:28:37,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:37,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:28:37,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834910123] [2020-10-26 23:28:37,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:28:37,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:37,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:28:37,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:28:37,432 INFO L87 Difference]: Start difference. First operand 9284 states and 11032 transitions. Second operand 9 states. [2020-10-26 23:28:40,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:40,946 INFO L93 Difference]: Finished difference Result 18846 states and 22446 transitions. [2020-10-26 23:28:40,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:28:40,948 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1068 [2020-10-26 23:28:40,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:40,984 INFO L225 Difference]: With dead ends: 18846 [2020-10-26 23:28:40,984 INFO L226 Difference]: Without dead ends: 9864 [2020-10-26 23:28:40,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:28:41,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9864 states. [2020-10-26 23:28:41,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9864 to 9282. [2020-10-26 23:28:41,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9282 states. [2020-10-26 23:28:41,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9282 states to 9282 states and 10991 transitions. [2020-10-26 23:28:41,225 INFO L78 Accepts]: Start accepts. Automaton has 9282 states and 10991 transitions. Word has length 1068 [2020-10-26 23:28:41,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:41,226 INFO L481 AbstractCegarLoop]: Abstraction has 9282 states and 10991 transitions. [2020-10-26 23:28:41,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:28:41,226 INFO L276 IsEmpty]: Start isEmpty. Operand 9282 states and 10991 transitions. [2020-10-26 23:28:41,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2020-10-26 23:28:41,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:41,249 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:28:41,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:28:41,249 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:41,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:41,250 INFO L82 PathProgramCache]: Analyzing trace with hash -427035387, now seen corresponding path program 1 times [2020-10-26 23:28:41,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:41,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607965220] [2020-10-26 23:28:41,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:41,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:41,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:41,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:42,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:45,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:46,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:46,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1107 [2020-10-26 23:28:46,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:28:46,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-26 23:28:46,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:46,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:46,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:28:46,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:28:46,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:46,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:46,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:46,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:46,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:46,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:46,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:28:46,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:46,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:46,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:46,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:46,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:46,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:28:46,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:46,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:46,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:46,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:46,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:46,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:46,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:46,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:46,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:28:46,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:46,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:46,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:46,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:47,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:28:47,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:47,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:47,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:47,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:47,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:28:47,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:47,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:47,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:47,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:47,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:28:47,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:28:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:47,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:28:47,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-26 23:28:47,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:28:47,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:47,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-26 23:28:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:47,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:28:47,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:28:47,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:28:47,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:47,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:47,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 837 [2020-10-26 23:28:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:47,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:47,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:28:47,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:28:47,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:47,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:47,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 920 [2020-10-26 23:28:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:47,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:47,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:47,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 23:28:47,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:47,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:28:47,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:47,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:47,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 23:28:47,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:47,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3866 backedges. 1229 proven. 243 refuted. 0 times theorem prover too weak. 2394 trivial. 0 not checked. [2020-10-26 23:28:48,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607965220] [2020-10-26 23:28:48,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:48,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:48,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095856610] [2020-10-26 23:28:48,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:48,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:48,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:48,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:48,620 INFO L87 Difference]: Start difference. First operand 9282 states and 10991 transitions. Second operand 7 states. [2020-10-26 23:28:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:28:50,954 INFO L93 Difference]: Finished difference Result 19300 states and 22830 transitions. [2020-10-26 23:28:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:28:50,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1079 [2020-10-26 23:28:50,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:28:50,980 INFO L225 Difference]: With dead ends: 19300 [2020-10-26 23:28:50,980 INFO L226 Difference]: Without dead ends: 10390 [2020-10-26 23:28:50,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:28:51,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10390 states. [2020-10-26 23:28:51,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10390 to 10204. [2020-10-26 23:28:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10204 states. [2020-10-26 23:28:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10204 states to 10204 states and 11993 transitions. [2020-10-26 23:28:51,217 INFO L78 Accepts]: Start accepts. Automaton has 10204 states and 11993 transitions. Word has length 1079 [2020-10-26 23:28:51,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:28:51,218 INFO L481 AbstractCegarLoop]: Abstraction has 10204 states and 11993 transitions. [2020-10-26 23:28:51,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:28:51,218 INFO L276 IsEmpty]: Start isEmpty. Operand 10204 states and 11993 transitions. [2020-10-26 23:28:51,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1100 [2020-10-26 23:28:51,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:28:51,239 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 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, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:28:51,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:28:51,239 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:28:51,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:28:51,240 INFO L82 PathProgramCache]: Analyzing trace with hash -240534715, now seen corresponding path program 1 times [2020-10-26 23:28:51,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:28:51,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307599193] [2020-10-26 23:28:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:28:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:51,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:51,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:53,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:54,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:55,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1127 [2020-10-26 23:28:56,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:28:56,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 23:28:56,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:56,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:28:56,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:28:56,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:28:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:28:56,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:56,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:28:56,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:56,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:56,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:28:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:28:56,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:28:56,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:56,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:28:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:28:56,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:56,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:28:56,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:56,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:56,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:56,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:28:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:28:56,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:56,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:28:56,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:56,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:56,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:56,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:28:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:28:56,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:56,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:28:56,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:56,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:56,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:56,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:28:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:28:56,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:56,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:28:56,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:56,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:56,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:56,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:28:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:56,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:56,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:28:56,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:56,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:28:56,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:56,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:56,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:28:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:56,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:57,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:57,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:28:57,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:57,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 23:28:57,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:57,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:28:57,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:28:57,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:28:57,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:57,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:28:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:57,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:57,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:57,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:28:57,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:57,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:28:57,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:28:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:28:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:28:57,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 940 [2020-10-26 23:28:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:28:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:28:57,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:28:57,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 23:28:57,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:28:57,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:28:57,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:28:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:28:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 23:28:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:28:57,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:28:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3905 backedges. 1194 proven. 82 refuted. 0 times theorem prover too weak. 2629 trivial. 0 not checked. [2020-10-26 23:28:58,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307599193] [2020-10-26 23:28:58,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:28:58,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:28:58,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673520454] [2020-10-26 23:28:58,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:28:58,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:28:58,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:28:58,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:28:58,022 INFO L87 Difference]: Start difference. First operand 10204 states and 11993 transitions. Second operand 7 states. [2020-10-26 23:29:00,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:29:00,346 INFO L93 Difference]: Finished difference Result 19860 states and 23460 transitions. [2020-10-26 23:29:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:29:00,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1099 [2020-10-26 23:29:00,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:29:00,372 INFO L225 Difference]: With dead ends: 19860 [2020-10-26 23:29:00,372 INFO L226 Difference]: Without dead ends: 10028 [2020-10-26 23:29:00,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:29:00,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10028 states. [2020-10-26 23:29:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10028 to 10016. [2020-10-26 23:29:00,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10016 states. [2020-10-26 23:29:00,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10016 states to 10016 states and 11560 transitions. [2020-10-26 23:29:00,604 INFO L78 Accepts]: Start accepts. Automaton has 10016 states and 11560 transitions. Word has length 1099 [2020-10-26 23:29:00,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:29:00,605 INFO L481 AbstractCegarLoop]: Abstraction has 10016 states and 11560 transitions. [2020-10-26 23:29:00,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:29:00,606 INFO L276 IsEmpty]: Start isEmpty. Operand 10016 states and 11560 transitions. [2020-10-26 23:29:00,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1154 [2020-10-26 23:29:00,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:29:00,632 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:29:00,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:29:00,633 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:29:00,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:29:00,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1802592415, now seen corresponding path program 1 times [2020-10-26 23:29:00,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:29:00,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31691563] [2020-10-26 23:29:00,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:29:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:00,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:01,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:02,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:04,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:05,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:05,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1181 [2020-10-26 23:29:05,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:29:05,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-26 23:29:05,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:05,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:29:05,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:29:05,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:29:05,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:06,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:29:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:06,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:06,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:29:06,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:06,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-26 23:29:06,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:06,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:06,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:06,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:06,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:06,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:29:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:06,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:06,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:29:06,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:06,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:29:06,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:06,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:06,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:29:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:06,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:06,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:29:06,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:06,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:29:06,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:06,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:06,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:06,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:06,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:29:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:06,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:06,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:29:06,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:06,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:29:06,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:06,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:06,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:06,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:06,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:06,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:29:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:06,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:06,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:29:06,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:06,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:29:06,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:06,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:06,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:06,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:06,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:06,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:29:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:06,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:29:06,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:06,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:29:06,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:06,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:06,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:06,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:06,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:06,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:29:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:06,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:06,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:29:06,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:06,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:29:06,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:06,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:29:06,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:29:06,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:29:06,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:06,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:29:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:06,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:06,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:06,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:29:06,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:06,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 23:29:06,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:06,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:29:06,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:29:06,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:07,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-26 23:29:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:07,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:07,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:29:07,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:29:07,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:29:07,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:29:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:29:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:29:07,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:07,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 994 [2020-10-26 23:29:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:29:07,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:29:07,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:29:07,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 23:29:07,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:29:07,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:29:07,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:29:07,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:29:07,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 23:29:07,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:29:07,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:29:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4130 backedges. 1548 proven. 224 refuted. 0 times theorem prover too weak. 2358 trivial. 0 not checked. [2020-10-26 23:29:08,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31691563] [2020-10-26 23:29:08,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:29:08,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:29:08,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528463728] [2020-10-26 23:29:08,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:29:08,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:29:08,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:29:08,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:29:08,591 INFO L87 Difference]: Start difference. First operand 10016 states and 11560 transitions. Second operand 10 states. [2020-10-26 23:29:09,615 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65