/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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:32:46,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:32:46,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:32:46,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:32:46,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:32:46,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:32:46,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:32:46,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:32:46,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:32:46,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:32:46,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:32:46,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:32:46,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:32:46,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:32:46,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:32:46,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:32:46,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:32:46,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:32:46,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:32:46,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:32:46,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:32:46,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:32:46,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:32:46,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:32:46,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:32:46,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:32:46,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:32:46,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:32:46,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:32:46,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:32:46,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:32:46,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:32:46,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:32:46,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:32:46,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:32:46,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:32:46,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:32:46,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:32:46,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:32:46,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:32:46,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:32:46,807 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 23:32:46,841 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:32:46,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:32:46,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:32:46,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:32:46,844 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:32:46,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:32:46,844 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:32:46,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:32:46,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:32:46,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:32:46,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:32:46,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:32:46,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:32:46,846 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:32:46,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:32:46,846 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:32:46,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:32:46,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:32:46,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:32:46,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:32:46,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:32:46,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:32:46,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:32:46,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:32:46,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:32:46,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:32:46,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:32:46,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:32:46,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:32:46,850 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:32:47,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:32:47,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:32:47,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:32:47,307 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:32:47,308 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:32:47,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label54.c [2020-10-26 23:32:47,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89751e6fc/3d06200d270e4809887d864c607ee3ec/FLAG912204733 [2020-10-26 23:32:48,165 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:32:48,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label54.c [2020-10-26 23:32:48,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89751e6fc/3d06200d270e4809887d864c607ee3ec/FLAG912204733 [2020-10-26 23:32:48,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89751e6fc/3d06200d270e4809887d864c607ee3ec [2020-10-26 23:32:48,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:32:48,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:32:48,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:32:48,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:32:48,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:32:48,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:32:48" (1/1) ... [2020-10-26 23:32:48,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db91a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:48, skipping insertion in model container [2020-10-26 23:32:48,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:32:48" (1/1) ... [2020-10-26 23:32:48,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:32:48,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:32:49,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:32:49,140 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:32:49,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:32:49,357 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:32:49,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:49 WrapperNode [2020-10-26 23:32:49,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:32:49,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:32:49,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:32:49,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:32:49,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:49" (1/1) ... [2020-10-26 23:32:49,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:49" (1/1) ... [2020-10-26 23:32:49,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:49" (1/1) ... [2020-10-26 23:32:49,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:49" (1/1) ... [2020-10-26 23:32:49,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:49" (1/1) ... [2020-10-26 23:32:49,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:49" (1/1) ... [2020-10-26 23:32:49,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:49" (1/1) ... [2020-10-26 23:32:49,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:32:49,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:32:49,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:32:49,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:32:49,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:49" (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 23:32:49,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:32:49,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:32:49,618 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:32:49,618 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:32:49,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:32:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:32:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:32:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:32:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:32:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:32:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:32:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:32:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:32:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:32:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:32:49,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:32:49,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:32:49,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:32:49,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:32:51,358 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:32:51,359 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:32:51,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:32:51 BoogieIcfgContainer [2020-10-26 23:32:51,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:32:51,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:32:51,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:32:51,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:32:51,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:32:48" (1/3) ... [2020-10-26 23:32:51,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c76b808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:32:51, skipping insertion in model container [2020-10-26 23:32:51,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:32:49" (2/3) ... [2020-10-26 23:32:51,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c76b808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:32:51, skipping insertion in model container [2020-10-26 23:32:51,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:32:51" (3/3) ... [2020-10-26 23:32:51,375 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label54.c [2020-10-26 23:32:51,391 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:32:51,397 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:32:51,411 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:32:51,445 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:32:51,446 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:32:51,446 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:32:51,446 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:32:51,446 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:32:51,446 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:32:51,446 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:32:51,447 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:32:51,471 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:32:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 23:32:51,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:51,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:32:51,478 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:51,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:51,485 INFO L82 PathProgramCache]: Analyzing trace with hash -30652242, now seen corresponding path program 1 times [2020-10-26 23:32:51,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:51,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101548788] [2020-10-26 23:32:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:51,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:52,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:52,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 23:32:52,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:52,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-10-26 23:32:52,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:52,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:32:52,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:32:52,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 23:32:52,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 23:32:52,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:52,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:52,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:52,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:52,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:52,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:32:52,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:52,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:52,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:32:52,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:32:52,431 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 23:32:52,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101548788] [2020-10-26 23:32:52,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:32:52,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:32:52,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109907842] [2020-10-26 23:32:52,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:32:52,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:52,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:32:52,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:32:52,466 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-26 23:32:55,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:55,012 INFO L93 Difference]: Finished difference Result 703 states and 1247 transitions. [2020-10-26 23:32:55,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:32:55,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-26 23:32:55,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:55,032 INFO L225 Difference]: With dead ends: 703 [2020-10-26 23:32:55,033 INFO L226 Difference]: Without dead ends: 381 [2020-10-26 23:32:55,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:32:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-26 23:32:55,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 375. [2020-10-26 23:32:55,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-26 23:32:55,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 605 transitions. [2020-10-26 23:32:55,139 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 605 transitions. Word has length 13 [2020-10-26 23:32:55,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:55,139 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 605 transitions. [2020-10-26 23:32:55,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:32:55,140 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 605 transitions. [2020-10-26 23:32:55,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-26 23:32:55,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:55,145 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 23:32:55,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:32:55,146 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:55,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:55,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1301569919, now seen corresponding path program 1 times [2020-10-26 23:32:55,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:55,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459661423] [2020-10-26 23:32:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:55,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:55,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:56,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:56,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:32:56,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:32:56,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-26 23:32:56,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:32:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:32:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:32:56,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 23:32:56,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:32:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:56,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:56,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:56,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:32:56,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:56,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:32:56,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:56,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:32:56,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:32:56,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:32:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:32:56,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:32:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:56,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:56,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:32:56,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:32:56,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:32:56,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 23:32:56,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:32:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:32:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:32:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:32:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:32:56,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:32:56,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459661423] [2020-10-26 23:32:56,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:32:56,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:32:56,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37296150] [2020-10-26 23:32:56,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:32:56,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:32:56,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:32:56,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:32:56,603 INFO L87 Difference]: Start difference. First operand 375 states and 605 transitions. Second operand 7 states. [2020-10-26 23:32:59,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:32:59,127 INFO L93 Difference]: Finished difference Result 1132 states and 1845 transitions. [2020-10-26 23:32:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:32:59,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-10-26 23:32:59,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:32:59,141 INFO L225 Difference]: With dead ends: 1132 [2020-10-26 23:32:59,141 INFO L226 Difference]: Without dead ends: 763 [2020-10-26 23:32:59,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:32:59,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2020-10-26 23:32:59,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 563. [2020-10-26 23:32:59,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-10-26 23:32:59,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 833 transitions. [2020-10-26 23:32:59,238 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 833 transitions. Word has length 82 [2020-10-26 23:32:59,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:32:59,240 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 833 transitions. [2020-10-26 23:32:59,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:32:59,241 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 833 transitions. [2020-10-26 23:32:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-26 23:32:59,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:32:59,246 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 23:32:59,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:32:59,247 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:32:59,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:32:59,247 INFO L82 PathProgramCache]: Analyzing trace with hash 592735753, now seen corresponding path program 1 times [2020-10-26 23:32:59,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:32:59,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249931702] [2020-10-26 23:32:59,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:32:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:32:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:32:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:00,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:00,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-26 23:33:00,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:00,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1085 [2020-10-26 23:33:00,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:00,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:33:00,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:33:00,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:33:00,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:00,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:00,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:00,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:00,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:00,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:00,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:33:00,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:33:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:00,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:00,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:00,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:00,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:00,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:00,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:33:00,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:00,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:00,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:00,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:33:00,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:33:00,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249931702] [2020-10-26 23:33:00,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:33:00,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:33:00,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944155327] [2020-10-26 23:33:00,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:00,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:00,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:00,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:00,864 INFO L87 Difference]: Start difference. First operand 563 states and 833 transitions. Second operand 7 states. [2020-10-26 23:33:03,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:03,537 INFO L93 Difference]: Finished difference Result 1358 states and 2050 transitions. [2020-10-26 23:33:03,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:33:03,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-26 23:33:03,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:03,549 INFO L225 Difference]: With dead ends: 1358 [2020-10-26 23:33:03,549 INFO L226 Difference]: Without dead ends: 801 [2020-10-26 23:33:03,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 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 23:33:03,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-10-26 23:33:03,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 749. [2020-10-26 23:33:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-10-26 23:33:03,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1035 transitions. [2020-10-26 23:33:03,618 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1035 transitions. Word has length 86 [2020-10-26 23:33:03,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:03,620 INFO L481 AbstractCegarLoop]: Abstraction has 749 states and 1035 transitions. [2020-10-26 23:33:03,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:03,620 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1035 transitions. [2020-10-26 23:33:03,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-26 23:33:03,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:03,633 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 23:33:03,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:33:03,634 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:03,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:03,634 INFO L82 PathProgramCache]: Analyzing trace with hash -935208172, now seen corresponding path program 1 times [2020-10-26 23:33:03,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:03,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218879559] [2020-10-26 23:33:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:03,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:03,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:05,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:05,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-26 23:33:05,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:33:05,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1335 [2020-10-26 23:33:05,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:05,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:05,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:33:05,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:33:05,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:33:05,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:05,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:05,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:05,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:05,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:05,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:33:05,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:05,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:05,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:05,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:05,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:05,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:05,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:05,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:05,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:33:05,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:05,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:33:05,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:05,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:05,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:05,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:33:05,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:05,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:33:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:05,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:05,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:05,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:05,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:05,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 23:33:05,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:33:05,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 23:33:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:33:05,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218879559] [2020-10-26 23:33:05,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:05,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:33:05,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78888495] [2020-10-26 23:33:05,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:33:05,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:05,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:33:05,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:33:05,727 INFO L87 Difference]: Start difference. First operand 749 states and 1035 transitions. Second operand 6 states. [2020-10-26 23:33:07,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:07,704 INFO L93 Difference]: Finished difference Result 1232 states and 1773 transitions. [2020-10-26 23:33:07,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:33:07,704 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2020-10-26 23:33:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:07,712 INFO L225 Difference]: With dead ends: 1232 [2020-10-26 23:33:07,712 INFO L226 Difference]: Without dead ends: 603 [2020-10-26 23:33:07,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:33:07,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-10-26 23:33:07,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 561. [2020-10-26 23:33:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-26 23:33:07,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 681 transitions. [2020-10-26 23:33:07,738 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 681 transitions. Word has length 170 [2020-10-26 23:33:07,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:07,739 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 681 transitions. [2020-10-26 23:33:07,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:33:07,739 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 681 transitions. [2020-10-26 23:33:07,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-26 23:33:07,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:07,742 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:33:07,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:33:07,742 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:07,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:07,743 INFO L82 PathProgramCache]: Analyzing trace with hash 417115206, now seen corresponding path program 1 times [2020-10-26 23:33:07,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:07,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282741493] [2020-10-26 23:33:07,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:07,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:08,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:12,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:12,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-26 23:33:12,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:33:12,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4470 [2020-10-26 23:33:12,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:12,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:33:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:33:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:33:12,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:12,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:12,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:12,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:12,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:12,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:12,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:33:12,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:12,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:12,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:12,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:33:12,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:12,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:12,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:12,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:12,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:12,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:12,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 23:33:12,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:33:12,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:12,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:33:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:12,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:12,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:12,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:12,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:12,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:33:12,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:12,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:12,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:33:12,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:12,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:33:12,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282741493] [2020-10-26 23:33:12,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:12,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:12,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962981994] [2020-10-26 23:33:12,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:12,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:12,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:12,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:12,871 INFO L87 Difference]: Start difference. First operand 561 states and 681 transitions. Second operand 7 states. [2020-10-26 23:33:14,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:14,989 INFO L93 Difference]: Finished difference Result 1502 states and 1886 transitions. [2020-10-26 23:33:14,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:33:14,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-10-26 23:33:14,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:15,000 INFO L225 Difference]: With dead ends: 1502 [2020-10-26 23:33:15,000 INFO L226 Difference]: Without dead ends: 1129 [2020-10-26 23:33:15,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:33:15,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-10-26 23:33:15,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1121. [2020-10-26 23:33:15,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2020-10-26 23:33:15,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1328 transitions. [2020-10-26 23:33:15,046 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1328 transitions. Word has length 195 [2020-10-26 23:33:15,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:15,046 INFO L481 AbstractCegarLoop]: Abstraction has 1121 states and 1328 transitions. [2020-10-26 23:33:15,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:15,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1328 transitions. [2020-10-26 23:33:15,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-26 23:33:15,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:15,052 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:15,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:33:15,053 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:15,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:15,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1952885233, now seen corresponding path program 1 times [2020-10-26 23:33:15,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:15,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854288926] [2020-10-26 23:33:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:15,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:15,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:16,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:16,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-26 23:33:16,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:16,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1441 [2020-10-26 23:33:16,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:16,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:16,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:33:16,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:33:16,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:16,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:16,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:16,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:16,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:16,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:16,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:33:16,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:16,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:16,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:16,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:16,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:16,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:16,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:16,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:16,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:33:16,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:16,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:16,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:16,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:16,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:16,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:16,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:16,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:16,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:16,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:16,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:33:16,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:33:16,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:16,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:16,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:16,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:16,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:16,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:16,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:33:16,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:16,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:16,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:16,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:33:16,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-26 23:33:17,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854288926] [2020-10-26 23:33:17,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:17,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:17,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57775692] [2020-10-26 23:33:17,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:17,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:17,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:17,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:17,255 INFO L87 Difference]: Start difference. First operand 1121 states and 1328 transitions. Second operand 7 states. [2020-10-26 23:33:19,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:19,214 INFO L93 Difference]: Finished difference Result 2060 states and 2521 transitions. [2020-10-26 23:33:19,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:33:19,217 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2020-10-26 23:33:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:19,226 INFO L225 Difference]: With dead ends: 2060 [2020-10-26 23:33:19,226 INFO L226 Difference]: Without dead ends: 1311 [2020-10-26 23:33:19,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:33:19,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2020-10-26 23:33:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1307. [2020-10-26 23:33:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1307 states. [2020-10-26 23:33:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1526 transitions. [2020-10-26 23:33:19,288 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1526 transitions. Word has length 305 [2020-10-26 23:33:19,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:19,290 INFO L481 AbstractCegarLoop]: Abstraction has 1307 states and 1526 transitions. [2020-10-26 23:33:19,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:19,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1526 transitions. [2020-10-26 23:33:19,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-10-26 23:33:19,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:19,302 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:33:19,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:33:19,302 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:19,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:19,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1318814502, now seen corresponding path program 2 times [2020-10-26 23:33:19,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:19,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414541757] [2020-10-26 23:33:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:19,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:19,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:19,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:20,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:24,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:24,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-26 23:33:24,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:33:24,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 23:33:24,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:33:24,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:33:24,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-26 23:33:24,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:24,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:24,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:24,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:24,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:24,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:24,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:33:24,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:24,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:24,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:24,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:24,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:24,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:24,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:24,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:24,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:33:24,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:24,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:24,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:24,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:24,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:24,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:24,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:33:24,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:24,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:33:24,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:24,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:24,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:25,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:25,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:25,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:25,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-26 23:33:25,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:25,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:25,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:25,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:33:25,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:25,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:33:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:25,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:25,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:25,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:25,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:25,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:33:25,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:25,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:25,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:25,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:33:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 446 proven. 6 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 23:33:25,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414541757] [2020-10-26 23:33:25,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:25,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:33:25,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180566308] [2020-10-26 23:33:25,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:33:25,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:25,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:33:25,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:33:25,793 INFO L87 Difference]: Start difference. First operand 1307 states and 1526 transitions. Second operand 8 states. [2020-10-26 23:33:27,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:27,828 INFO L93 Difference]: Finished difference Result 2442 states and 2962 transitions. [2020-10-26 23:33:27,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:33:27,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 415 [2020-10-26 23:33:27,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:27,838 INFO L225 Difference]: With dead ends: 2442 [2020-10-26 23:33:27,839 INFO L226 Difference]: Without dead ends: 1507 [2020-10-26 23:33:27,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:33:27,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2020-10-26 23:33:27,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1491. [2020-10-26 23:33:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2020-10-26 23:33:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 1718 transitions. [2020-10-26 23:33:27,889 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 1718 transitions. Word has length 415 [2020-10-26 23:33:27,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:27,890 INFO L481 AbstractCegarLoop]: Abstraction has 1491 states and 1718 transitions. [2020-10-26 23:33:27,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:33:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 1718 transitions. [2020-10-26 23:33:27,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2020-10-26 23:33:27,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:27,903 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:33:27,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:33:27,904 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:27,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:27,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1514969573, now seen corresponding path program 1 times [2020-10-26 23:33:27,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:27,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189472091] [2020-10-26 23:33:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:28,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:28,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:29,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:30,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:33,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:33,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 594 [2020-10-26 23:33:33,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:33:33,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 23:33:33,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:33:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:33:33,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:33,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:33,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:33,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:33,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:33,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:33:33,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:33,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:33,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:33,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:33,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:33,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:33:33,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:33,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:33,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:33,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:33,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:33:33,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:33,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:33,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:33,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:33,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:33,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 23:33:33,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:33,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:33:33,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:33:33,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:33,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:33,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:33,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:33,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-26 23:33:33,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:33,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:33,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:33,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:33:33,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:33,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:33:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:33,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:33,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:33:33,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:33,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:33:33,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:33,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:33,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 23:33:33,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:33,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-26 23:33:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:33,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:33,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:33,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:33,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:33:33,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:33,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:33,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:33:33,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:33,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 259 proven. 179 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2020-10-26 23:33:34,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189472091] [2020-10-26 23:33:34,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:34,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:34,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359679593] [2020-10-26 23:33:34,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:34,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:34,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:34,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:34,270 INFO L87 Difference]: Start difference. First operand 1491 states and 1718 transitions. Second operand 7 states. [2020-10-26 23:33:36,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:36,560 INFO L93 Difference]: Finished difference Result 3378 states and 4078 transitions. [2020-10-26 23:33:36,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:33:36,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 574 [2020-10-26 23:33:36,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:36,573 INFO L225 Difference]: With dead ends: 3378 [2020-10-26 23:33:36,573 INFO L226 Difference]: Without dead ends: 2259 [2020-10-26 23:33:36,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:33:36,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2020-10-26 23:33:36,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 2239. [2020-10-26 23:33:36,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2239 states. [2020-10-26 23:33:36,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 2662 transitions. [2020-10-26 23:33:36,644 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 2662 transitions. Word has length 574 [2020-10-26 23:33:36,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:36,645 INFO L481 AbstractCegarLoop]: Abstraction has 2239 states and 2662 transitions. [2020-10-26 23:33:36,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:36,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 2662 transitions. [2020-10-26 23:33:36,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2020-10-26 23:33:36,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:36,662 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:33:36,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:33:36,663 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:36,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:36,664 INFO L82 PathProgramCache]: Analyzing trace with hash 972522715, now seen corresponding path program 1 times [2020-10-26 23:33:36,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:36,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453198619] [2020-10-26 23:33:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:36,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:37,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:40,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:40,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 601 [2020-10-26 23:33:40,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:40,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3267 [2020-10-26 23:33:40,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:40,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:33:40,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:33:40,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:40,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:40,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:40,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:40,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:40,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:40,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:33:40,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:40,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:40,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:40,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:40,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:40,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:40,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:40,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:40,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:40,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:40,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:33:40,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:40,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:40,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:40,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:40,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:40,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:40,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:40,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:40,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:40,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:40,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:33:40,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:40,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:40,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:40,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:40,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:40,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:40,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:40,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:33:40,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:40,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:40,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:40,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:40,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:40,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:40,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:40,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:40,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:33:40,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:40,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 23:33:40,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:33:40,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:40,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:33:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:40,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:40,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:40,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:40,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:40,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:33:40,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:40,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:40,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:40,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:33:40,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:40,994 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 320 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-26 23:33:40,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453198619] [2020-10-26 23:33:40,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:40,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:40,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173008029] [2020-10-26 23:33:40,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:40,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:40,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:40,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:40,997 INFO L87 Difference]: Start difference. First operand 2239 states and 2662 transitions. Second operand 7 states. [2020-10-26 23:33:43,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:43,943 INFO L93 Difference]: Finished difference Result 4690 states and 5786 transitions. [2020-10-26 23:33:43,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:33:43,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 581 [2020-10-26 23:33:43,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:43,959 INFO L225 Difference]: With dead ends: 4690 [2020-10-26 23:33:43,960 INFO L226 Difference]: Without dead ends: 2823 [2020-10-26 23:33:43,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 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 23:33:43,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2020-10-26 23:33:44,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2623. [2020-10-26 23:33:44,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2623 states. [2020-10-26 23:33:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 3123 transitions. [2020-10-26 23:33:44,044 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 3123 transitions. Word has length 581 [2020-10-26 23:33:44,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:44,046 INFO L481 AbstractCegarLoop]: Abstraction has 2623 states and 3123 transitions. [2020-10-26 23:33:44,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:33:44,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 3123 transitions. [2020-10-26 23:33:44,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2020-10-26 23:33:44,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:44,052 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:33:44,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:33:44,053 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:44,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:44,053 INFO L82 PathProgramCache]: Analyzing trace with hash 521071837, now seen corresponding path program 1 times [2020-10-26 23:33:44,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:44,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951865091] [2020-10-26 23:33:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:44,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:44,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:44,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:45,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:45,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:46,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:49,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:49,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 602 [2020-10-26 23:33:49,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:33:49,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-26 23:33:49,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:49,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:33:49,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:33:49,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 583 [2020-10-26 23:33:49,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:49,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:49,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:49,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:49,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:49,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:49,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:33:49,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:49,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:49,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:33:49,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:49,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:49,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:49,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:49,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:49,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:49,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 23:33:49,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:33:49,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 23:33:49,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:49,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:49,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:49,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:49,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:49,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:49,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-26 23:33:49,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:49,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:33:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:49,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:49,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:49,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:50,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:50,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:50,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:50,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 23:33:50,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:33:50,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:50,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:50,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:50,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:50,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:50,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:33:50,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:33:50,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-26 23:33:50,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:50,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-26 23:33:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:50,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:33:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:50,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:50,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:50,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:33:50,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:50,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:33:50,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:50,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:50,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:33:50,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 230 proven. 322 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2020-10-26 23:33:50,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951865091] [2020-10-26 23:33:50,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:50,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:50,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415321834] [2020-10-26 23:33:50,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:33:50,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:50,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:33:50,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:33:50,784 INFO L87 Difference]: Start difference. First operand 2623 states and 3123 transitions. Second operand 8 states. [2020-10-26 23:33:52,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:33:52,891 INFO L93 Difference]: Finished difference Result 5524 states and 7129 transitions. [2020-10-26 23:33:52,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:33:52,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 582 [2020-10-26 23:33:52,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:33:52,910 INFO L225 Difference]: With dead ends: 5524 [2020-10-26 23:33:52,911 INFO L226 Difference]: Without dead ends: 3273 [2020-10-26 23:33:52,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:33:52,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2020-10-26 23:33:53,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 3179. [2020-10-26 23:33:53,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-10-26 23:33:53,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 3628 transitions. [2020-10-26 23:33:53,050 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 3628 transitions. Word has length 582 [2020-10-26 23:33:53,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:33:53,052 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 3628 transitions. [2020-10-26 23:33:53,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:33:53,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 3628 transitions. [2020-10-26 23:33:53,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2020-10-26 23:33:53,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:33:53,059 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:33:53,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:33:53,060 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:33:53,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:33:53,060 INFO L82 PathProgramCache]: Analyzing trace with hash -320053258, now seen corresponding path program 1 times [2020-10-26 23:33:53,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:33:53,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980970017] [2020-10-26 23:33:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:33:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:53,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:53,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:53,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:57,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:57,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 679 [2020-10-26 23:33:57,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:33:57,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4374 [2020-10-26 23:33:57,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:33:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:33:57,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:57,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:33:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:57,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:57,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:57,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:33:57,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:33:57,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:57,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:57,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:57,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:57,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:57,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:33:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:57,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:57,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:57,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:33:57,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:57,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:33:57,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:57,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:57,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:57,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:33:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:57,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:57,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:57,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:33:57,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:57,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:33:57,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:57,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:57,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:57,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:57,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:57,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:33:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:57,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:57,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:57,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:33:57,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:57,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:33:57,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:57,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:57,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:57,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:57,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:57,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:33:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:57,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:58,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:58,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:33:58,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:58,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:33:58,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:58,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:33:58,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:33:58,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:33:58,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:58,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:33:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:58,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:58,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:58,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:33:58,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:58,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:33:58,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:33:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:33:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:33:58,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:58,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-26 23:33:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:33:58,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:33:58,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:33:58,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:33:58,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:33:58,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:33:58,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:33:58,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:33:58,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:33:58,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:33:58,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:33:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1363 backedges. 353 proven. 72 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2020-10-26 23:33:58,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980970017] [2020-10-26 23:33:58,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:33:58,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:33:58,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818127073] [2020-10-26 23:33:58,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:33:58,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:33:58,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:33:58,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:33:58,516 INFO L87 Difference]: Start difference. First operand 3179 states and 3628 transitions. Second operand 7 states. [2020-10-26 23:34:00,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:00,786 INFO L93 Difference]: Finished difference Result 7102 states and 8304 transitions. [2020-10-26 23:34:00,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:34:00,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 657 [2020-10-26 23:34:00,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:00,808 INFO L225 Difference]: With dead ends: 7102 [2020-10-26 23:34:00,808 INFO L226 Difference]: Without dead ends: 4295 [2020-10-26 23:34:00,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:34:00,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4295 states. [2020-10-26 23:34:00,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4295 to 4101. [2020-10-26 23:34:00,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4101 states. [2020-10-26 23:34:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 4642 transitions. [2020-10-26 23:34:00,927 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 4642 transitions. Word has length 657 [2020-10-26 23:34:00,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:00,928 INFO L481 AbstractCegarLoop]: Abstraction has 4101 states and 4642 transitions. [2020-10-26 23:34:00,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:34:00,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 4642 transitions. [2020-10-26 23:34:00,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2020-10-26 23:34:00,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:00,937 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2020-10-26 23:34:00,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:34:00,937 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:00,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:00,938 INFO L82 PathProgramCache]: Analyzing trace with hash -306937706, now seen corresponding path program 1 times [2020-10-26 23:34:00,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:00,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777532910] [2020-10-26 23:34:00,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:01,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:01,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:06,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:06,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 738 [2020-10-26 23:34:06,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:34:06,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 23:34:06,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:06,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:34:06,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:34:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:34:06,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:34:06,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:06,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:06,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:06,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:06,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:34:06,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:06,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:06,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:06,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:06,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:06,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:06,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:06,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:06,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:06,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:34:06,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:06,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:06,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:06,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:06,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:06,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:06,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:06,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:06,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:34:06,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:06,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:06,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:06,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:06,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:06,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:06,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:06,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:06,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:06,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:34:06,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:06,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:06,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:34:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:06,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:06,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:06,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:07,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:07,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:34:07,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:07,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-26 23:34:07,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:34:07,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:07,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:34:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:07,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:07,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:07,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:34:07,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:07,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:34:07,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:34:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:07,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:07,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-26 23:34:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:07,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:07,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:07,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:34:07,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:07,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:34:07,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:07,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:07,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-26 23:34:07,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:07,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 391 proven. 186 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2020-10-26 23:34:08,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777532910] [2020-10-26 23:34:08,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:08,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:34:08,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609131509] [2020-10-26 23:34:08,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:34:08,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:08,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:34:08,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:34:08,296 INFO L87 Difference]: Start difference. First operand 4101 states and 4642 transitions. Second operand 8 states. [2020-10-26 23:34:09,292 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-26 23:34:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:11,000 INFO L93 Difference]: Finished difference Result 8582 states and 9767 transitions. [2020-10-26 23:34:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:34:11,001 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 716 [2020-10-26 23:34:11,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:11,020 INFO L225 Difference]: With dead ends: 8582 [2020-10-26 23:34:11,021 INFO L226 Difference]: Without dead ends: 4853 [2020-10-26 23:34:11,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:34:11,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4853 states. [2020-10-26 23:34:11,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4853 to 4839. [2020-10-26 23:34:11,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4839 states. [2020-10-26 23:34:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4839 states to 4839 states and 5403 transitions. [2020-10-26 23:34:11,159 INFO L78 Accepts]: Start accepts. Automaton has 4839 states and 5403 transitions. Word has length 716 [2020-10-26 23:34:11,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:11,161 INFO L481 AbstractCegarLoop]: Abstraction has 4839 states and 5403 transitions. [2020-10-26 23:34:11,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:34:11,161 INFO L276 IsEmpty]: Start isEmpty. Operand 4839 states and 5403 transitions. [2020-10-26 23:34:11,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2020-10-26 23:34:11,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:11,171 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2020-10-26 23:34:11,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:34:11,171 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:11,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:11,172 INFO L82 PathProgramCache]: Analyzing trace with hash -2091566540, now seen corresponding path program 1 times [2020-10-26 23:34:11,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:11,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276720251] [2020-10-26 23:34:11,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:11,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:11,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:12,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:12,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 776 [2020-10-26 23:34:12,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:12,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1473 [2020-10-26 23:34:12,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:12,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:12,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:34:12,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:34:12,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:12,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:12,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:12,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:12,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:12,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:12,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:34:12,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:12,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:12,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:12,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:12,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:12,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:12,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:12,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:12,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:34:12,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:13,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:13,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:13,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:13,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:13,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:13,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:34:13,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:13,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:13,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:13,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:13,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:13,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:13,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:13,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:13,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:13,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:13,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:34:13,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:13,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:13,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:13,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:13,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:13,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:13,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:13,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:13,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:34:13,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:13,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:34:13,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:13,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:13,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:13,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:34:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:13,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:13,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:13,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:34:13,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:13,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:34:13,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:13,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:34:13,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:13,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:34:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:13,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:13,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:13,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:34:13,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:34:13,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:13,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:34:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 400 proven. 2 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-26 23:34:13,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276720251] [2020-10-26 23:34:13,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:13,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:34:13,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135137228] [2020-10-26 23:34:13,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:34:13,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:13,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:34:13,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:34:13,978 INFO L87 Difference]: Start difference. First operand 4839 states and 5403 transitions. Second operand 7 states. [2020-10-26 23:34:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:16,219 INFO L93 Difference]: Finished difference Result 9495 states and 10645 transitions. [2020-10-26 23:34:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:34:16,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 754 [2020-10-26 23:34:16,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:16,242 INFO L225 Difference]: With dead ends: 9495 [2020-10-26 23:34:16,242 INFO L226 Difference]: Without dead ends: 5028 [2020-10-26 23:34:16,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:34:16,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2020-10-26 23:34:16,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 5023. [2020-10-26 23:34:16,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5023 states. [2020-10-26 23:34:16,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5023 states to 5023 states and 5568 transitions. [2020-10-26 23:34:16,382 INFO L78 Accepts]: Start accepts. Automaton has 5023 states and 5568 transitions. Word has length 754 [2020-10-26 23:34:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:16,383 INFO L481 AbstractCegarLoop]: Abstraction has 5023 states and 5568 transitions. [2020-10-26 23:34:16,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:34:16,383 INFO L276 IsEmpty]: Start isEmpty. Operand 5023 states and 5568 transitions. [2020-10-26 23:34:16,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2020-10-26 23:34:16,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:16,394 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 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, 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] [2020-10-26 23:34:16,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:34:16,394 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:16,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:16,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1667751843, now seen corresponding path program 1 times [2020-10-26 23:34:16,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:16,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773815734] [2020-10-26 23:34:16,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:17,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:17,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 821 [2020-10-26 23:34:17,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1120 [2020-10-26 23:34:17,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 806 [2020-10-26 23:34:17,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 23:34:17,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:17,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:17,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:17,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:17,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:17,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:17,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:34:17,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:17,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:17,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:17,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:17,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:17,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:17,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:17,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:17,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:17,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:17,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:34:17,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:17,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:17,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:17,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:17,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:17,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:17,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:17,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:17,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:17,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:17,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:34:17,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:17,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:17,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:17,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:17,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:17,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:17,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:17,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:17,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:34:17,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:17,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:17,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:17,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:18,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:18,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:18,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:18,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:34:18,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:18,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:34:18,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:18,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:18,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:34:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:18,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:18,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:18,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:34:18,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:18,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:34:18,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:18,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:18,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:18,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:18,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:18,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:34:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:18,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:18,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:18,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:34:18,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:18,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:34:18,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:18,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:18,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:34:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:18,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:18,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:18,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:34:18,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:18,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:34:18,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 23:34:18,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:18,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2007 backedges. 46 proven. 7 refuted. 0 times theorem prover too weak. 1954 trivial. 0 not checked. [2020-10-26 23:34:18,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773815734] [2020-10-26 23:34:18,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:18,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:34:18,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474186183] [2020-10-26 23:34:18,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:34:18,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:18,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:34:18,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:34:18,549 INFO L87 Difference]: Start difference. First operand 5023 states and 5568 transitions. Second operand 5 states. [2020-10-26 23:34:20,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:20,441 INFO L93 Difference]: Finished difference Result 10416 states and 11644 transitions. [2020-10-26 23:34:20,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:34:20,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 797 [2020-10-26 23:34:20,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:20,463 INFO L225 Difference]: With dead ends: 10416 [2020-10-26 23:34:20,464 INFO L226 Difference]: Without dead ends: 5211 [2020-10-26 23:34:20,475 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 23:34:20,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5211 states. [2020-10-26 23:34:20,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5211 to 5027. [2020-10-26 23:34:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5027 states. [2020-10-26 23:34:20,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5027 states to 5027 states and 5588 transitions. [2020-10-26 23:34:20,590 INFO L78 Accepts]: Start accepts. Automaton has 5027 states and 5588 transitions. Word has length 797 [2020-10-26 23:34:20,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:20,591 INFO L481 AbstractCegarLoop]: Abstraction has 5027 states and 5588 transitions. [2020-10-26 23:34:20,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:34:20,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5027 states and 5588 transitions. [2020-10-26 23:34:20,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2020-10-26 23:34:20,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:20,604 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 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 23:34:20,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:34:20,604 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:20,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:20,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1256056659, now seen corresponding path program 1 times [2020-10-26 23:34:20,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:20,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513653492] [2020-10-26 23:34:20,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:20,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:21,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:21,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:22,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:23,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:23,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:23,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:25,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:25,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 876 [2020-10-26 23:34:25,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:34:25,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-26 23:34:25,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-26 23:34:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:34:25,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 857 [2020-10-26 23:34:25,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:25,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:25,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:25,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:25,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:25,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:25,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:34:25,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:25,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:25,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:25,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:34:25,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:25,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:25,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:26,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:26,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:26,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:26,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:26,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:34:26,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:34:26,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:26,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:26,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:26,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:26,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:26,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:26,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:26,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 23:34:26,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:26,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:34:26,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:26,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:26,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:26,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:26,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:26,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:26,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:26,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:34:26,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:34:26,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:26,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:26,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:26,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:26,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:26,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:34:26,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:26,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:34:26,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:26,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:34:26,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:26,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:34:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:26,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:26,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:26,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:26,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:34:26,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:26,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-26 23:34:26,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:26,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:26,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:34:26,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:26,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:34:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:27,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:27,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:27,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:34:27,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:27,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-26 23:34:27,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:27,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:27,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:27,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:34:27,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:27,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-26 23:34:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:27,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:27,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:27,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:34:27,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:27,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:34:27,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:34:27,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2098 backedges. 1241 proven. 192 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2020-10-26 23:34:28,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513653492] [2020-10-26 23:34:28,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:28,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:34:28,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594670558] [2020-10-26 23:34:28,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:34:28,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:28,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:34:28,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:34:28,654 INFO L87 Difference]: Start difference. First operand 5027 states and 5588 transitions. Second operand 9 states. [2020-10-26 23:34:30,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:30,562 INFO L93 Difference]: Finished difference Result 9906 states and 11079 transitions. [2020-10-26 23:34:30,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:34:30,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 852 [2020-10-26 23:34:30,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:30,580 INFO L225 Difference]: With dead ends: 9906 [2020-10-26 23:34:30,580 INFO L226 Difference]: Without dead ends: 5251 [2020-10-26 23:34:30,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:34:30,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2020-10-26 23:34:30,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 5033. [2020-10-26 23:34:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5033 states. [2020-10-26 23:34:30,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 5570 transitions. [2020-10-26 23:34:30,719 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 5570 transitions. Word has length 852 [2020-10-26 23:34:30,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:30,720 INFO L481 AbstractCegarLoop]: Abstraction has 5033 states and 5570 transitions. [2020-10-26 23:34:30,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:34:30,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 5570 transitions. [2020-10-26 23:34:30,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2020-10-26 23:34:30,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:30,732 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 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] [2020-10-26 23:34:30,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:34:30,733 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:30,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:30,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1964601138, now seen corresponding path program 1 times [2020-10-26 23:34:30,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:30,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559791273] [2020-10-26 23:34:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:31,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:31,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:33,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:34,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:35,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:35,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 906 [2020-10-26 23:34:35,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:34:35,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-26 23:34:35,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:34:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:34:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:34:35,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:36,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:36,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:36,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:36,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:36,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:36,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:34:36,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:36,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:36,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:36,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:36,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:36,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:36,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:36,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:36,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:36,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:36,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:34:36,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:36,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:36,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:36,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:36,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:36,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:36,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:36,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:36,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:36,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:36,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:34:36,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:36,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:36,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:36,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:36,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:36,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:36,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:36,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:34:36,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:36,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:36,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:36,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:36,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:36,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:36,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:34:36,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:36,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:34:36,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:36,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:36,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:36,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:36,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:36,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:34:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:36,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:36,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:36,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:34:36,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:36,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:34:36,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:36,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:36,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:36,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:34:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:36,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:36,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:36,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:34:36,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:36,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:34:36,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:34:36,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:36,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:34:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:36,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:36,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:36,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:34:36,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:36,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 23:34:36,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:34:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:34:36,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:34:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:36,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:36,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:36,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:36,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:34:36,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-26 23:34:36,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:34:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2584 backedges. 1162 proven. 56 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:34:37,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559791273] [2020-10-26 23:34:37,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:37,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:34:37,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063909693] [2020-10-26 23:34:37,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:34:37,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:37,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:34:37,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:34:37,650 INFO L87 Difference]: Start difference. First operand 5033 states and 5570 transitions. Second operand 9 states. [2020-10-26 23:34:40,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:40,978 INFO L93 Difference]: Finished difference Result 11802 states and 13270 transitions. [2020-10-26 23:34:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:34:40,980 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 880 [2020-10-26 23:34:40,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:41,005 INFO L225 Difference]: With dead ends: 11802 [2020-10-26 23:34:41,005 INFO L226 Difference]: Without dead ends: 7106 [2020-10-26 23:34:41,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 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 23:34:41,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7106 states. [2020-10-26 23:34:41,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7106 to 6885. [2020-10-26 23:34:41,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6885 states. [2020-10-26 23:34:41,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6885 states to 6885 states and 7749 transitions. [2020-10-26 23:34:41,220 INFO L78 Accepts]: Start accepts. Automaton has 6885 states and 7749 transitions. Word has length 880 [2020-10-26 23:34:41,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:41,221 INFO L481 AbstractCegarLoop]: Abstraction has 6885 states and 7749 transitions. [2020-10-26 23:34:41,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:34:41,221 INFO L276 IsEmpty]: Start isEmpty. Operand 6885 states and 7749 transitions. [2020-10-26 23:34:41,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2020-10-26 23:34:41,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:41,235 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 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] [2020-10-26 23:34:41,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:34:41,235 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:41,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:41,236 INFO L82 PathProgramCache]: Analyzing trace with hash -867508116, now seen corresponding path program 1 times [2020-10-26 23:34:41,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:41,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775233227] [2020-10-26 23:34:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:41,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:41,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:44,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:44,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:46,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:46,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 939 [2020-10-26 23:34:46,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:34:46,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-26 23:34:46,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:46,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:34:46,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:34:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-26 23:34:46,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:46,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:46,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:46,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:46,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:46,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:46,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:34:46,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:46,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:46,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:46,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:46,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:46,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:46,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:46,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:34:46,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:46,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:46,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:46,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:46,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:46,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:46,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:46,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:46,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:46,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:34:46,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:46,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:46,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:46,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:46,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:46,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:46,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:46,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:34:46,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:46,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:46,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:46,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:46,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:46,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:46,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:46,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:46,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:34:46,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:46,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:34:46,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:46,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:46,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:46,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:46,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:46,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:34:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:46,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:46,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:46,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:34:46,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:46,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:34:46,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:46,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:46,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:34:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:46,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:46,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:46,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:34:46,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:46,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:34:46,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:46,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:46,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:46,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:34:46,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:46,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:34:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:46,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:47,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:47,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 23:34:47,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:47,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-26 23:34:47,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:47,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:34:47,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:47,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-26 23:34:47,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:47,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-26 23:34:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:47,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:47,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:47,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:47,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:34:47,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:47,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:34:47,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:34:47,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:48,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2620 backedges. 1198 proven. 56 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:34:48,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775233227] [2020-10-26 23:34:48,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:48,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:34:48,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186024185] [2020-10-26 23:34:48,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:34:48,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:48,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:34:48,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:34:48,091 INFO L87 Difference]: Start difference. First operand 6885 states and 7749 transitions. Second operand 9 states. [2020-10-26 23:34:51,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:34:51,343 INFO L93 Difference]: Finished difference Result 13650 states and 15416 transitions. [2020-10-26 23:34:51,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:34:51,344 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 913 [2020-10-26 23:34:51,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:34:51,370 INFO L225 Difference]: With dead ends: 13650 [2020-10-26 23:34:51,370 INFO L226 Difference]: Without dead ends: 7104 [2020-10-26 23:34:51,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 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 23:34:51,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7104 states. [2020-10-26 23:34:51,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7104 to 6885. [2020-10-26 23:34:51,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6885 states. [2020-10-26 23:34:51,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6885 states to 6885 states and 7739 transitions. [2020-10-26 23:34:51,545 INFO L78 Accepts]: Start accepts. Automaton has 6885 states and 7739 transitions. Word has length 913 [2020-10-26 23:34:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:34:51,546 INFO L481 AbstractCegarLoop]: Abstraction has 6885 states and 7739 transitions. [2020-10-26 23:34:51,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:34:51,546 INFO L276 IsEmpty]: Start isEmpty. Operand 6885 states and 7739 transitions. [2020-10-26 23:34:51,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2020-10-26 23:34:51,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:51,565 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 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] [2020-10-26 23:34:51,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:34:51,565 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:51,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:51,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1207008970, now seen corresponding path program 1 times [2020-10-26 23:34:51,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:51,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663059698] [2020-10-26 23:34:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:51,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:52,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:55,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:56,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:56,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:56,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 940 [2020-10-26 23:34:56,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:34:56,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 23:34:56,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:56,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:34:56,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:34:56,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-26 23:34:56,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:57,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:57,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:57,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:57,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:57,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:34:57,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:57,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:34:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:57,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:57,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:34:57,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:57,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:34:57,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:57,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:57,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:57,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:57,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:57,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:34:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:57,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:57,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:57,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:34:57,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:57,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:34:57,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:57,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:57,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:34:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:57,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:57,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:57,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:34:57,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:57,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:34:57,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:57,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:34:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:57,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:57,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:57,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:34:57,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:57,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:34:57,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:57,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:57,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:34:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:57,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:57,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:57,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:34:57,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:57,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:34:57,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:34:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:34:57,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:57,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:34:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:57,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:57,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:57,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:34:57,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:34:57,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:34:57,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:57,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:34:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:57,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:57,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:57,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 23:34:57,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:57,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-26 23:34:57,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:57,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:34:57,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:57,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:34:57,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:57,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-26 23:34:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:57,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:57,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:58,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:58,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:34:58,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:34:58,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-26 23:34:58,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:58,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:34:58,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:34:58,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:34:58,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:34:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2621 backedges. 1199 proven. 56 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:34:58,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663059698] [2020-10-26 23:34:58,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:34:58,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:34:58,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766434622] [2020-10-26 23:34:58,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:34:58,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:58,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:34:58,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:34:58,833 INFO L87 Difference]: Start difference. First operand 6885 states and 7739 transitions. Second operand 9 states. [2020-10-26 23:35:02,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:02,290 INFO L93 Difference]: Finished difference Result 13652 states and 15391 transitions. [2020-10-26 23:35:02,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 23:35:02,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 914 [2020-10-26 23:35:02,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:02,313 INFO L225 Difference]: With dead ends: 13652 [2020-10-26 23:35:02,313 INFO L226 Difference]: Without dead ends: 7102 [2020-10-26 23:35:02,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-10-26 23:35:02,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7102 states. [2020-10-26 23:35:02,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7102 to 6883. [2020-10-26 23:35:02,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6883 states. [2020-10-26 23:35:02,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 7702 transitions. [2020-10-26 23:35:02,477 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 7702 transitions. Word has length 914 [2020-10-26 23:35:02,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:02,478 INFO L481 AbstractCegarLoop]: Abstraction has 6883 states and 7702 transitions. [2020-10-26 23:35:02,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:35:02,479 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 7702 transitions. [2020-10-26 23:35:02,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2020-10-26 23:35:02,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:02,493 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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] [2020-10-26 23:35:02,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:35:02,493 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:02,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:02,494 INFO L82 PathProgramCache]: Analyzing trace with hash -491127316, now seen corresponding path program 1 times [2020-10-26 23:35:02,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:02,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801028349] [2020-10-26 23:35:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:02,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:02,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:03,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:06,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:07,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:07,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 951 [2020-10-26 23:35:07,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:35:07,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-26 23:35:07,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:35:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:35:07,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:07,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:07,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:07,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:07,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:07,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:07,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:35:07,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:07,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:07,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:07,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:07,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:07,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:07,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:07,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:07,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:35:07,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:07,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:35:07,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:07,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:07,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:07,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:07,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:07,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:35:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:07,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:07,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:07,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:35:07,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:35:07,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:07,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:35:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:07,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:07,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:07,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:35:07,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:07,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:35:07,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:07,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:07,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:35:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:07,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:07,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:07,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:35:07,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:07,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:35:07,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:07,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:07,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:07,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:07,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:08,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:35:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:08,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:08,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:08,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:35:08,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:08,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:35:08,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:08,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:08,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:08,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:35:08,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:08,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:35:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:08,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:08,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:08,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:35:08,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-26 23:35:08,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:35:08,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:08,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-26 23:35:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:08,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:08,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:08,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:35:08,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:08,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:35:08,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:35:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:08,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 837 [2020-10-26 23:35:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:08,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:08,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:08,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:35:08,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:08,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:35:08,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:08,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:35:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:08,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:09,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2614 backedges. 664 proven. 152 refuted. 0 times theorem prover too weak. 1798 trivial. 0 not checked. [2020-10-26 23:35:09,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801028349] [2020-10-26 23:35:09,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:35:09,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:35:09,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457719939] [2020-10-26 23:35:09,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:35:09,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:09,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:35:09,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:35:09,449 INFO L87 Difference]: Start difference. First operand 6883 states and 7702 transitions. Second operand 7 states. [2020-10-26 23:35:11,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:11,862 INFO L93 Difference]: Finished difference Result 14502 states and 16446 transitions. [2020-10-26 23:35:11,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:35:11,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 925 [2020-10-26 23:35:11,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:11,888 INFO L225 Difference]: With dead ends: 14502 [2020-10-26 23:35:11,888 INFO L226 Difference]: Without dead ends: 7803 [2020-10-26 23:35:11,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:35:11,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7803 states. [2020-10-26 23:35:12,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7803 to 7801. [2020-10-26 23:35:12,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7801 states. [2020-10-26 23:35:12,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7801 states to 7801 states and 8702 transitions. [2020-10-26 23:35:12,082 INFO L78 Accepts]: Start accepts. Automaton has 7801 states and 8702 transitions. Word has length 925 [2020-10-26 23:35:12,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:12,083 INFO L481 AbstractCegarLoop]: Abstraction has 7801 states and 8702 transitions. [2020-10-26 23:35:12,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:35:12,083 INFO L276 IsEmpty]: Start isEmpty. Operand 7801 states and 8702 transitions. [2020-10-26 23:35:12,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 949 [2020-10-26 23:35:12,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:12,099 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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, 8, 8, 8, 8, 8, 8, 8, 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, 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 23:35:12,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:35:12,099 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:12,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:12,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1095261272, now seen corresponding path program 1 times [2020-10-26 23:35:12,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:12,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797635583] [2020-10-26 23:35:12,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:12,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:13,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:15,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:15,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 974 [2020-10-26 23:35:15,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:35:15,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3557 [2020-10-26 23:35:15,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:15,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:35:15,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:35:15,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 23:35:15,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:16,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:16,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:16,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:16,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:16,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:16,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:35:16,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:16,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:16,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:16,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:16,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:16,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:16,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:16,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:35:16,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:16,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:35:16,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:16,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:16,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:16,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:16,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:16,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:35:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:16,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:16,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:16,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:35:16,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:16,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:35:16,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:16,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:16,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:16,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:16,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:16,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:35:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:16,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:16,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:16,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:35:16,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:16,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:35:16,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:16,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:16,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:35:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:16,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:16,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:16,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:35:16,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:16,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:35:16,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:16,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:16,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:35:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:16,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:16,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:16,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:35:16,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:16,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:35:16,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:16,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:16,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:35:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:16,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:16,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:16,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:35:16,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:16,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:35:16,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:16,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:35:16,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:16,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:35:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:16,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:16,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:16,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:35:16,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:16,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-26 23:35:16,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:35:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:35:16,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:16,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:35:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:16,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:16,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:16,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:35:16,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:16,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:35:16,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:16,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:35:16,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 1214 proven. 85 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-26 23:35:17,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797635583] [2020-10-26 23:35:17,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:35:17,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:35:17,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034080623] [2020-10-26 23:35:17,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:35:17,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:17,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:35:17,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:35:17,442 INFO L87 Difference]: Start difference. First operand 7801 states and 8702 transitions. Second operand 10 states. [2020-10-26 23:35:21,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:21,644 INFO L93 Difference]: Finished difference Result 15969 states and 17912 transitions. [2020-10-26 23:35:21,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:35:21,645 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 948 [2020-10-26 23:35:21,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:21,668 INFO L225 Difference]: With dead ends: 15969 [2020-10-26 23:35:21,668 INFO L226 Difference]: Without dead ends: 8540 [2020-10-26 23:35:21,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-26 23:35:21,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8540 states. [2020-10-26 23:35:21,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8540 to 8353. [2020-10-26 23:35:21,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8353 states. [2020-10-26 23:35:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8353 states to 8353 states and 9282 transitions. [2020-10-26 23:35:21,858 INFO L78 Accepts]: Start accepts. Automaton has 8353 states and 9282 transitions. Word has length 948 [2020-10-26 23:35:21,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:21,859 INFO L481 AbstractCegarLoop]: Abstraction has 8353 states and 9282 transitions. [2020-10-26 23:35:21,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:35:21,860 INFO L276 IsEmpty]: Start isEmpty. Operand 8353 states and 9282 transitions. [2020-10-26 23:35:21,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2020-10-26 23:35:21,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:21,876 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2020-10-26 23:35:21,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:35:21,877 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:21,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:21,877 INFO L82 PathProgramCache]: Analyzing trace with hash -236592312, now seen corresponding path program 1 times [2020-10-26 23:35:21,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:21,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549046080] [2020-10-26 23:35:21,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:22,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:22,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:27,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:27,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1025 [2020-10-26 23:35:27,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:35:27,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5282 [2020-10-26 23:35:27,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:27,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:35:27,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:35:27,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:35:27,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:27,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:27,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:27,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:27,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:27,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:27,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:35:27,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:27,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:27,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:27,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:27,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:27,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:35:27,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:27,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:35:27,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:27,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:27,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:35:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:27,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:27,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:27,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:35:27,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:27,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:35:27,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:27,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:27,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:27,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:27,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:27,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:35:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:27,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:27,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:27,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:35:27,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:27,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:35:27,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:27,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:27,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:27,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:27,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:27,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:35:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:27,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:27,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:27,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:35:27,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:27,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:35:27,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:27,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:27,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:35:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:27,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:28,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:28,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:35:28,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:28,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:35:28,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:28,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:28,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:35:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:28,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:28,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:28,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:35:28,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:28,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-26 23:35:28,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:28,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:28,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:28,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:35:28,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:28,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:35:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:28,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:28,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:28,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:35:28,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:28,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:35:28,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:35:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:28,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:35:28,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:28,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-26 23:35:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:28,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:28,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:28,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:28,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:35:28,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:35:28,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 23:35:28,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:28,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:28,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:28,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:35:28,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2865 backedges. 979 proven. 72 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2020-10-26 23:35:29,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549046080] [2020-10-26 23:35:29,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:35:29,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:35:29,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037275837] [2020-10-26 23:35:29,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:35:29,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:29,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:35:29,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:35:29,557 INFO L87 Difference]: Start difference. First operand 8353 states and 9282 transitions. Second operand 10 states. [2020-10-26 23:35:33,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:33,179 INFO L93 Difference]: Finished difference Result 18820 states and 21195 transitions. [2020-10-26 23:35:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:35:33,180 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 999 [2020-10-26 23:35:33,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:33,208 INFO L225 Difference]: With dead ends: 18820 [2020-10-26 23:35:33,209 INFO L226 Difference]: Without dead ends: 10798 [2020-10-26 23:35:33,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:35:33,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10798 states. [2020-10-26 23:35:33,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10798 to 10379. [2020-10-26 23:35:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10379 states. [2020-10-26 23:35:33,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10379 states to 10379 states and 11618 transitions. [2020-10-26 23:35:33,481 INFO L78 Accepts]: Start accepts. Automaton has 10379 states and 11618 transitions. Word has length 999 [2020-10-26 23:35:33,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:33,482 INFO L481 AbstractCegarLoop]: Abstraction has 10379 states and 11618 transitions. [2020-10-26 23:35:33,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:35:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 10379 states and 11618 transitions. [2020-10-26 23:35:33,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2020-10-26 23:35:33,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:33,503 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:33,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:35:33,503 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:33,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:33,504 INFO L82 PathProgramCache]: Analyzing trace with hash 2111548595, now seen corresponding path program 1 times [2020-10-26 23:35:33,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:33,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191393271] [2020-10-26 23:35:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:33,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:34,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:34,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:38,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:38,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1091 [2020-10-26 23:35:38,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:35:38,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-26 23:35:38,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:38,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:35:38,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:35:38,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 387 [2020-10-26 23:35:38,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:38,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:38,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:38,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:38,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:38,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:38,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:35:38,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:38,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:38,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:38,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:38,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:38,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:38,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:38,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:38,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:35:38,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:38,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:35:38,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:38,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:38,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:38,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:38,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:38,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:35:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:39,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:39,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:35:39,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:35:39,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:39,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:39,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:35:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:39,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:39,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:39,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:35:39,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:39,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:35:39,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:39,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:39,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:39,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:35:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:39,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:39,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:39,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:35:39,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:39,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:35:39,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:39,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:39,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:39,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:39,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:39,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:35:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:39,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:39,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:39,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:35:39,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:39,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:35:39,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:39,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:39,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:39,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:35:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:39,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:39,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:39,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:35:39,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:35:39,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:35:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:39,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:35:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:39,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:39,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:39,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:35:39,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:39,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-26 23:35:39,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:35:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:35:39,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:39,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:35:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:39,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:39,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:39,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:35:39,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:39,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-26 23:35:39,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:39,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:39,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:39,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:35:39,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:40,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:35:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:40,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:40,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:40,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:35:40,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:40,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:35:40,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:40,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:40,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:40,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:35:40,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3467 backedges. 1925 proven. 164 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2020-10-26 23:35:41,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191393271] [2020-10-26 23:35:41,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:35:41,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:35:41,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295968814] [2020-10-26 23:35:41,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:35:41,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:41,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:35:41,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:35:41,359 INFO L87 Difference]: Start difference. First operand 10379 states and 11618 transitions. Second operand 11 states. [2020-10-26 23:35:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:45,609 INFO L93 Difference]: Finished difference Result 20571 states and 23087 transitions. [2020-10-26 23:35:45,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:35:45,613 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1063 [2020-10-26 23:35:45,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:45,635 INFO L225 Difference]: With dead ends: 20571 [2020-10-26 23:35:45,635 INFO L226 Difference]: Without dead ends: 10564 [2020-10-26 23:35:45,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:35:45,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10564 states. [2020-10-26 23:35:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10564 to 10195. [2020-10-26 23:35:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10195 states. [2020-10-26 23:35:45,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10195 states to 10195 states and 11415 transitions. [2020-10-26 23:35:45,858 INFO L78 Accepts]: Start accepts. Automaton has 10195 states and 11415 transitions. Word has length 1063 [2020-10-26 23:35:45,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:45,860 INFO L481 AbstractCegarLoop]: Abstraction has 10195 states and 11415 transitions. [2020-10-26 23:35:45,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:35:45,860 INFO L276 IsEmpty]: Start isEmpty. Operand 10195 states and 11415 transitions. [2020-10-26 23:35:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1109 [2020-10-26 23:35:45,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:45,879 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:45,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 23:35:45,879 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:45,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:45,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1782688720, now seen corresponding path program 1 times [2020-10-26 23:35:45,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:45,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335823873] [2020-10-26 23:35:45,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:46,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:46,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:48,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1134 [2020-10-26 23:35:51,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:35:51,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-26 23:35:51,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:35:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:35:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:35:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:51,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:51,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:35:51,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:51,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:51,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:51,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:35:51,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:35:51,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:51,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:35:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:35:51,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:51,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:35:51,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:51,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:35:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:35:51,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:51,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:35:51,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:51,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:35:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:35:51,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:51,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:35:51,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:51,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:51,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:51,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:35:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:35:51,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:51,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:35:51,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:51,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:51,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:35:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:35:51,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:51,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:35:51,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:51,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:51,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:35:51,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:35:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:52,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:52,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:35:52,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:35:52,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-26 23:35:52,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:35:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:52,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:35:52,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:53,017 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-10-26 23:35:53,259 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-10-26 23:35:53,502 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-10-26 23:35:53,777 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-26 23:35:54,036 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-26 23:35:54,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-26 23:35:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:54,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:54,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:54,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:35:54,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:54,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:35:54,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:35:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:54,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3288 backedges. 901 proven. 85 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2020-10-26 23:35:57,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335823873] [2020-10-26 23:35:57,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:35:57,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:35:57,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332518383] [2020-10-26 23:35:57,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:35:57,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:57,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:35:57,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:35:57,350 INFO L87 Difference]: Start difference. First operand 10195 states and 11415 transitions. Second operand 13 states. [2020-10-26 23:35:58,239 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2020-10-26 23:35:58,668 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-10-26 23:35:59,125 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-26 23:35:59,533 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2020-10-26 23:36:00,023 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 98 [2020-10-26 23:36:00,552 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2020-10-26 23:36:01,032 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 114 [2020-10-26 23:36:01,516 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2020-10-26 23:36:01,793 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-26 23:36:02,598 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-10-26 23:36:03,044 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2020-10-26 23:36:03,658 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2020-10-26 23:36:03,923 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 29 [2020-10-26 23:36:04,330 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 91 [2020-10-26 23:36:04,888 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 95 [2020-10-26 23:36:05,358 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 99 [2020-10-26 23:36:06,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:06,032 INFO L93 Difference]: Finished difference Result 20202 states and 22663 transitions. [2020-10-26 23:36:06,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 23:36:06,033 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1108 [2020-10-26 23:36:06,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:06,058 INFO L225 Difference]: With dead ends: 20202 [2020-10-26 23:36:06,058 INFO L226 Difference]: Without dead ends: 10308 [2020-10-26 23:36:06,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=269, Invalid=661, Unknown=0, NotChecked=0, Total=930 [2020-10-26 23:36:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10308 states. [2020-10-26 23:36:06,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10308 to 10308. [2020-10-26 23:36:06,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10308 states. [2020-10-26 23:36:06,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10308 states to 10308 states and 11515 transitions. [2020-10-26 23:36:06,312 INFO L78 Accepts]: Start accepts. Automaton has 10308 states and 11515 transitions. Word has length 1108 [2020-10-26 23:36:06,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:06,313 INFO L481 AbstractCegarLoop]: Abstraction has 10308 states and 11515 transitions. [2020-10-26 23:36:06,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:36:06,313 INFO L276 IsEmpty]: Start isEmpty. Operand 10308 states and 11515 transitions. [2020-10-26 23:36:06,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2020-10-26 23:36:06,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:06,335 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 23:36:06,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 23:36:06,335 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:06,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:06,336 INFO L82 PathProgramCache]: Analyzing trace with hash -947347569, now seen corresponding path program 1 times [2020-10-26 23:36:06,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:06,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909977334] [2020-10-26 23:36:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:06,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:07,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking...