/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/Problem18_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:35:50,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:35:50,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:35:50,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:35:50,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:35:50,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:35:50,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:35:50,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:35:50,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:35:50,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:35:50,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:35:50,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:35:50,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:35:50,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:35:50,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:35:50,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:35:50,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:35:50,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:35:50,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:35:50,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:35:50,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:35:50,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:35:50,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:35:50,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:35:50,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:35:50,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:35:50,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:35:50,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:35:50,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:35:50,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:35:50,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:35:50,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:35:50,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:35:50,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:35:50,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:35:50,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:35:50,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:35:50,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:35:50,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:35:50,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:35:50,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:35:50,655 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 [2020-10-27 00:35:50,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:35:50,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:35:50,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:35:50,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:35:50,718 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:35:50,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:35:50,718 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:35:50,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:35:50,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:35:50,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:35:50,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:35:50,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:35:50,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:35:50,721 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:35:50,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:35:50,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:35:50,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:35:50,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:35:50,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:35:50,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:35:50,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:35:50,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:35:50,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:35:50,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:35:50,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:35:50,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:35:50,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:35:50,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:35:50,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:35:50,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:35:51,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:35:51,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:35:51,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:35:51,211 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:35:51,211 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:35:51,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label54.c [2020-10-27 00:35:51,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3ba21f05/18bed849c17e456fa8cac3e0f9dc7309/FLAG5716b55db [2020-10-27 00:35:52,436 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:35:52,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label54.c [2020-10-27 00:35:52,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3ba21f05/18bed849c17e456fa8cac3e0f9dc7309/FLAG5716b55db [2020-10-27 00:35:52,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3ba21f05/18bed849c17e456fa8cac3e0f9dc7309 [2020-10-27 00:35:52,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:35:52,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:35:52,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:35:52,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:35:52,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:35:52,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:35:52" (1/1) ... [2020-10-27 00:35:52,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@226be698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:52, skipping insertion in model container [2020-10-27 00:35:52,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:35:52" (1/1) ... [2020-10-27 00:35:52,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:35:53,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:35:54,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:35:54,141 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:35:54,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:35:54,717 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:35:54,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:54 WrapperNode [2020-10-27 00:35:54,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:35:54,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:35:54,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:35:54,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:35:54,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:54" (1/1) ... [2020-10-27 00:35:54,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:54" (1/1) ... [2020-10-27 00:35:54,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:54" (1/1) ... [2020-10-27 00:35:54,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:54" (1/1) ... [2020-10-27 00:35:54,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:54" (1/1) ... [2020-10-27 00:35:54,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:54" (1/1) ... [2020-10-27 00:35:54,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:54" (1/1) ... [2020-10-27 00:35:55,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:35:55,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:35:55,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:35:55,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:35:55,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:54" (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 [2020-10-27 00:35:55,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:35:55,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:35:55,092 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:35:55,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:35:55,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:35:55,093 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:35:55,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:35:55,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:35:55,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:35:55,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:35:55,093 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:35:55,093 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:35:55,094 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:35:55,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:35:55,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:35:55,094 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:35:55,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:35:55,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:35:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:35:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:35:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:35:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:35:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:35:59,473 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:35:59,473 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:35:59,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:35:59 BoogieIcfgContainer [2020-10-27 00:35:59,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:35:59,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:35:59,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:35:59,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:35:59,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:35:52" (1/3) ... [2020-10-27 00:35:59,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ee001e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:35:59, skipping insertion in model container [2020-10-27 00:35:59,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:35:54" (2/3) ... [2020-10-27 00:35:59,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ee001e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:35:59, skipping insertion in model container [2020-10-27 00:35:59,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:35:59" (3/3) ... [2020-10-27 00:35:59,491 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label54.c [2020-10-27 00:35:59,501 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:35:59,507 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:35:59,524 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:35:59,560 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:35:59,561 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:35:59,561 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:35:59,561 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:35:59,561 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:35:59,561 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:35:59,562 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:35:59,562 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:35:59,600 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:35:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 00:35:59,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:35:59,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:35:59,613 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:35:59,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:35:59,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1718748832, now seen corresponding path program 1 times [2020-10-27 00:35:59,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:35:59,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165579656] [2020-10-27 00:35:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:35:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:35:59,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:00,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:00,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 00:36:00,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:00,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-27 00:36:00,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 00:36:00,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:36:00,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:00,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:00,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:00,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:00,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:00,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:36:00,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:00,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:36:00,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165579656] [2020-10-27 00:36:00,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:36:00,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:36:00,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522286629] [2020-10-27 00:36:00,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:36:00,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:00,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:36:00,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:36:00,701 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 00:36:09,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:09,767 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-27 00:36:09,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:36:09,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-27 00:36:09,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:09,806 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 00:36:09,806 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 00:36:09,820 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 [2020-10-27 00:36:09,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 00:36:09,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-27 00:36:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-27 00:36:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2332 transitions. [2020-10-27 00:36:10,009 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2332 transitions. Word has length 41 [2020-10-27 00:36:10,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:10,010 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2332 transitions. [2020-10-27 00:36:10,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:36:10,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2332 transitions. [2020-10-27 00:36:10,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 00:36:10,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:10,016 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:36:10,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:36:10,017 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:10,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:10,018 INFO L82 PathProgramCache]: Analyzing trace with hash -2124908263, now seen corresponding path program 1 times [2020-10-27 00:36:10,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:10,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152090802] [2020-10-27 00:36:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:10,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:10,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:10,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:10,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:36:10,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:36:10,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 897 [2020-10-27 00:36:10,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 00:36:10,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:36:11,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:11,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:11,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:11,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:11,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:11,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:36:11,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:11,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:11,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:36:11,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:11,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:11,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:11,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:36:11,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:11,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 00:36:11,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:11,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 00:36:11,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:11,408 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:36:11,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152090802] [2020-10-27 00:36:11,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:36:11,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:36:11,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746631280] [2020-10-27 00:36:11,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:36:11,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:11,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:36:11,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:36:11,418 INFO L87 Difference]: Start difference. First operand 1426 states and 2332 transitions. Second operand 7 states. [2020-10-27 00:36:23,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:23,425 INFO L93 Difference]: Finished difference Result 4341 states and 7156 transitions. [2020-10-27 00:36:23,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:36:23,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-27 00:36:23,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:23,449 INFO L225 Difference]: With dead ends: 4341 [2020-10-27 00:36:23,449 INFO L226 Difference]: Without dead ends: 2921 [2020-10-27 00:36:23,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:36:23,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2020-10-27 00:36:23,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 2872. [2020-10-27 00:36:23,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2872 states. [2020-10-27 00:36:23,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 4104 transitions. [2020-10-27 00:36:23,601 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 4104 transitions. Word has length 111 [2020-10-27 00:36:23,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:23,604 INFO L481 AbstractCegarLoop]: Abstraction has 2872 states and 4104 transitions. [2020-10-27 00:36:23,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:36:23,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 4104 transitions. [2020-10-27 00:36:23,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-27 00:36:23,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:23,619 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:36:23,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:36:23,619 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:23,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:23,623 INFO L82 PathProgramCache]: Analyzing trace with hash -583436523, now seen corresponding path program 1 times [2020-10-27 00:36:23,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:23,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741584222] [2020-10-27 00:36:23,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:23,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:24,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:25,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:25,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-27 00:36:25,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:36:25,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1339 [2020-10-27 00:36:25,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:36:25,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:25,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:25,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:25,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:25,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:25,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:25,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:36:25,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:25,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:25,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:25,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:25,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:25,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:25,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:25,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:25,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 00:36:25,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:25,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-27 00:36:25,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 00:36:25,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:36:25,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741584222] [2020-10-27 00:36:25,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:36:25,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 00:36:25,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49732553] [2020-10-27 00:36:25,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:36:25,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:25,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:36:25,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:36:25,817 INFO L87 Difference]: Start difference. First operand 2872 states and 4104 transitions. Second operand 8 states. [2020-10-27 00:36:43,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:36:43,068 INFO L93 Difference]: Finished difference Result 11644 states and 17121 transitions. [2020-10-27 00:36:43,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 00:36:43,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 173 [2020-10-27 00:36:43,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:36:43,123 INFO L225 Difference]: With dead ends: 11644 [2020-10-27 00:36:43,124 INFO L226 Difference]: Without dead ends: 8778 [2020-10-27 00:36:43,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 00:36:43,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8778 states. [2020-10-27 00:36:43,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8778 to 8019. [2020-10-27 00:36:43,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8019 states. [2020-10-27 00:36:43,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8019 states to 8019 states and 10735 transitions. [2020-10-27 00:36:43,432 INFO L78 Accepts]: Start accepts. Automaton has 8019 states and 10735 transitions. Word has length 173 [2020-10-27 00:36:43,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:36:43,435 INFO L481 AbstractCegarLoop]: Abstraction has 8019 states and 10735 transitions. [2020-10-27 00:36:43,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:36:43,435 INFO L276 IsEmpty]: Start isEmpty. Operand 8019 states and 10735 transitions. [2020-10-27 00:36:43,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-27 00:36:43,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:36:43,444 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:36:43,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:36:43,444 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:36:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:36:43,446 INFO L82 PathProgramCache]: Analyzing trace with hash -342824056, now seen corresponding path program 1 times [2020-10-27 00:36:43,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:36:43,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738301395] [2020-10-27 00:36:43,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:36:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:43,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:44,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:47,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:47,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:36:47,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:36:47,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3564 [2020-10-27 00:36:47,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:47,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:36:47,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:36:47,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:36:47,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:36:47,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:36:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:47,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:47,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:47,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:36:47,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:47,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 00:36:47,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:47,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:36:47,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:36:47,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:36:47,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:36:47,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:36:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:47,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:47,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:47,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:36:47,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:47,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-27 00:36:47,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:36:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:36:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:36:47,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:36:47,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 00:36:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:36:47,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:36:47,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:36:47,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 00:36:47,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:36:47,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:36:47,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:36:47,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:36:47,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 00:36:47,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:36:47,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 00:36:47,965 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 66 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:36:47,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738301395] [2020-10-27 00:36:47,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:36:47,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:36:47,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947647577] [2020-10-27 00:36:47,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:36:47,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:36:47,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:36:47,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:36:47,969 INFO L87 Difference]: Start difference. First operand 8019 states and 10735 transitions. Second operand 8 states. [2020-10-27 00:37:00,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:37:00,966 INFO L93 Difference]: Finished difference Result 19879 states and 26330 transitions. [2020-10-27 00:37:00,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:37:00,967 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 236 [2020-10-27 00:37:00,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:37:01,041 INFO L225 Difference]: With dead ends: 19879 [2020-10-27 00:37:01,041 INFO L226 Difference]: Without dead ends: 11866 [2020-10-27 00:37:01,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:37:01,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11866 states. [2020-10-27 00:37:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11866 to 11726. [2020-10-27 00:37:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11726 states. [2020-10-27 00:37:01,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11726 states to 11726 states and 15103 transitions. [2020-10-27 00:37:01,430 INFO L78 Accepts]: Start accepts. Automaton has 11726 states and 15103 transitions. Word has length 236 [2020-10-27 00:37:01,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:37:01,432 INFO L481 AbstractCegarLoop]: Abstraction has 11726 states and 15103 transitions. [2020-10-27 00:37:01,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:37:01,432 INFO L276 IsEmpty]: Start isEmpty. Operand 11726 states and 15103 transitions. [2020-10-27 00:37:01,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-10-27 00:37:01,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:37:01,441 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:37:01,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:37:01,442 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:37:01,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:37:01,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1771847866, now seen corresponding path program 1 times [2020-10-27 00:37:01,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:37:01,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210523592] [2020-10-27 00:37:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:37:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:01,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:01,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:02,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:05,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:06,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:06,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 453 [2020-10-27 00:37:06,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:37:06,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 00:37:06,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:06,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 00:37:06,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:37:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 406 [2020-10-27 00:37:06,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:06,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:37:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:06,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:06,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:06,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:37:06,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:06,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:37:06,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:06,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:37:06,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:06,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:37:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:06,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:07,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:07,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:07,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:37:07,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:37:07,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-10-27 00:37:07,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:07,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:37:07,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:07,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:37:07,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:07,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:07,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:07,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:07,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:37:07,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:37:07,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:37:07,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:07,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:07,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:07,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:37:07,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:37:08,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:37:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:08,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:08,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:08,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 00:37:08,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:08,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 00:37:08,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 00:37:08,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 00:37:09,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210523592] [2020-10-27 00:37:09,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:37:09,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 00:37:09,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823704315] [2020-10-27 00:37:09,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 00:37:09,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:37:09,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 00:37:09,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:37:09,287 INFO L87 Difference]: Start difference. First operand 11726 states and 15103 transitions. Second operand 9 states. [2020-10-27 00:37:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:37:20,265 INFO L93 Difference]: Finished difference Result 26621 states and 34232 transitions. [2020-10-27 00:37:20,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:37:20,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 437 [2020-10-27 00:37:20,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:37:20,315 INFO L225 Difference]: With dead ends: 26621 [2020-10-27 00:37:20,316 INFO L226 Difference]: Without dead ends: 14901 [2020-10-27 00:37:20,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-10-27 00:37:20,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14901 states. [2020-10-27 00:37:20,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14901 to 14013. [2020-10-27 00:37:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14013 states. [2020-10-27 00:37:20,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14013 states to 14013 states and 17658 transitions. [2020-10-27 00:37:20,704 INFO L78 Accepts]: Start accepts. Automaton has 14013 states and 17658 transitions. Word has length 437 [2020-10-27 00:37:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:37:20,705 INFO L481 AbstractCegarLoop]: Abstraction has 14013 states and 17658 transitions. [2020-10-27 00:37:20,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 00:37:20,705 INFO L276 IsEmpty]: Start isEmpty. Operand 14013 states and 17658 transitions. [2020-10-27 00:37:20,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-27 00:37:20,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:37:20,715 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:37:20,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:37:20,715 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:37:20,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:37:20,716 INFO L82 PathProgramCache]: Analyzing trace with hash -318201910, now seen corresponding path program 1 times [2020-10-27 00:37:20,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:37:20,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435802819] [2020-10-27 00:37:20,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:37:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:21,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:21,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:22,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:25,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:25,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-27 00:37:25,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:37:25,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 00:37:25,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:37:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:37:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:37:25,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:37:26,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:37:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:26,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:26,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:37:26,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:26,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:37:26,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:26,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:26,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:26,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:37:26,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:26,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:37:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:26,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:26,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:26,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:37:26,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:26,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-27 00:37:26,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:37:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:37:26,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:27,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:27,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:27,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:27,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:37:27,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:27,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 00:37:27,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:27,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:37:27,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:37:27,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:27,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:37:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:27,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:27,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:27,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:37:27,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:27,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 00:37:27,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:27,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:27,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 00:37:27,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:27,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 66 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:37:27,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435802819] [2020-10-27 00:37:27,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:37:27,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:37:27,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647762241] [2020-10-27 00:37:27,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:37:27,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:37:27,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:37:27,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:37:27,688 INFO L87 Difference]: Start difference. First operand 14013 states and 17658 transitions. Second operand 8 states. [2020-10-27 00:37:42,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:37:42,452 INFO L93 Difference]: Finished difference Result 36054 states and 49874 transitions. [2020-10-27 00:37:42,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 00:37:42,454 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 445 [2020-10-27 00:37:42,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:37:42,559 INFO L225 Difference]: With dead ends: 36054 [2020-10-27 00:37:42,559 INFO L226 Difference]: Without dead ends: 22047 [2020-10-27 00:37:42,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-27 00:37:42,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22047 states. [2020-10-27 00:37:43,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22047 to 20816. [2020-10-27 00:37:43,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20816 states. [2020-10-27 00:37:43,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20816 states to 20816 states and 26146 transitions. [2020-10-27 00:37:43,336 INFO L78 Accepts]: Start accepts. Automaton has 20816 states and 26146 transitions. Word has length 445 [2020-10-27 00:37:43,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:37:43,337 INFO L481 AbstractCegarLoop]: Abstraction has 20816 states and 26146 transitions. [2020-10-27 00:37:43,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:37:43,338 INFO L276 IsEmpty]: Start isEmpty. Operand 20816 states and 26146 transitions. [2020-10-27 00:37:43,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2020-10-27 00:37:43,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:37:43,357 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:37:43,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:37:43,358 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:37:43,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:37:43,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1384912469, now seen corresponding path program 1 times [2020-10-27 00:37:43,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:37:43,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099515791] [2020-10-27 00:37:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:37:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:43,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:43,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:44,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:45,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:48,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:48,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:48,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 649 [2020-10-27 00:37:48,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:37:48,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-27 00:37:48,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:37:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:37:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:48,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:37:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:48,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:48,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:48,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:37:48,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:48,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:37:48,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:48,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:48,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:48,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:48,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:48,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:37:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:48,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:48,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:37:48,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 00:37:48,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:48,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:37:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:48,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:37:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:49,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:49,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:50,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:50,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:37:50,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:37:50,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-10-27 00:37:50,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:37:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:37:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:37:50,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:50,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:37:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:50,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:50,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:50,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:37:50,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:50,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:37:50,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:50,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:37:50,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:37:50,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 00:37:50,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:50,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-10-27 00:37:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:37:50,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:37:50,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:37:50,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:37:50,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:37:50,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:37:50,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:37:50,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:37:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 00:37:50,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:37:50,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:37:51,503 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 286 proven. 96 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-27 00:37:51,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099515791] [2020-10-27 00:37:51,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:37:51,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 00:37:51,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692387145] [2020-10-27 00:37:51,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 00:37:51,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:37:51,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 00:37:51,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:37:51,506 INFO L87 Difference]: Start difference. First operand 20816 states and 26146 transitions. Second operand 6 states. [2020-10-27 00:37:52,740 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-27 00:38:01,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:38:01,181 INFO L93 Difference]: Finished difference Result 41981 states and 52811 transitions. [2020-10-27 00:38:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:38:01,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 631 [2020-10-27 00:38:01,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:38:01,237 INFO L225 Difference]: With dead ends: 41981 [2020-10-27 00:38:01,237 INFO L226 Difference]: Without dead ends: 20614 [2020-10-27 00:38:01,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 00:38:01,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20614 states. [2020-10-27 00:38:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20614 to 20539. [2020-10-27 00:38:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20539 states. [2020-10-27 00:38:01,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20539 states to 20539 states and 23597 transitions. [2020-10-27 00:38:01,659 INFO L78 Accepts]: Start accepts. Automaton has 20539 states and 23597 transitions. Word has length 631 [2020-10-27 00:38:01,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:38:01,660 INFO L481 AbstractCegarLoop]: Abstraction has 20539 states and 23597 transitions. [2020-10-27 00:38:01,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 00:38:01,660 INFO L276 IsEmpty]: Start isEmpty. Operand 20539 states and 23597 transitions. [2020-10-27 00:38:01,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2020-10-27 00:38:01,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:38:01,704 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:38:01,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:38:01,704 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:38:01,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:38:01,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1051984053, now seen corresponding path program 1 times [2020-10-27 00:38:01,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:38:01,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48209125] [2020-10-27 00:38:01,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:38:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:02,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:02,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:05,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:05,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 994 [2020-10-27 00:38:05,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:38:05,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3368 [2020-10-27 00:38:05,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:38:05,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:38:05,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:05,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:38:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:05,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:05,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:05,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:38:05,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:05,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:38:05,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:05,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:38:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:05,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:05,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:05,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:38:05,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:05,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 00:38:05,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:05,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:05,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:05,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:05,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:05,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:05,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:05,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:38:05,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:05,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:38:05,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:05,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:06,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:38:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:06,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:06,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:06,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:38:06,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:06,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:38:06,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:06,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:06,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:06,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:06,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:06,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:38:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:06,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:06,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:06,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:38:06,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:06,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-27 00:38:06,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:38:06,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:06,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:06,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:06,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:06,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:38:06,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:06,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:38:06,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:06,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:06,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:38:06,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:06,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:38:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:06,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:06,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:06,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:38:06,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:06,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 00:38:06,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:06,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:06,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:38:06,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:38:06,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:38:07,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48209125] [2020-10-27 00:38:07,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:38:07,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:38:07,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931016522] [2020-10-27 00:38:07,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:38:07,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:38:07,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:38:07,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:38:07,659 INFO L87 Difference]: Start difference. First operand 20539 states and 23597 transitions. Second operand 7 states. [2020-10-27 00:38:17,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:38:17,737 INFO L93 Difference]: Finished difference Result 45558 states and 52377 transitions. [2020-10-27 00:38:17,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:38:17,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 972 [2020-10-27 00:38:17,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:38:17,804 INFO L225 Difference]: With dead ends: 45558 [2020-10-27 00:38:17,804 INFO L226 Difference]: Without dead ends: 25025 [2020-10-27 00:38:17,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:38:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25025 states. [2020-10-27 00:38:18,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25025 to 24838. [2020-10-27 00:38:18,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24838 states. [2020-10-27 00:38:18,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24838 states to 24838 states and 28175 transitions. [2020-10-27 00:38:18,472 INFO L78 Accepts]: Start accepts. Automaton has 24838 states and 28175 transitions. Word has length 972 [2020-10-27 00:38:18,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:38:18,475 INFO L481 AbstractCegarLoop]: Abstraction has 24838 states and 28175 transitions. [2020-10-27 00:38:18,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:38:18,475 INFO L276 IsEmpty]: Start isEmpty. Operand 24838 states and 28175 transitions. [2020-10-27 00:38:18,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2020-10-27 00:38:18,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:38:18,489 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:38:18,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:38:18,490 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:38:18,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:38:18,491 INFO L82 PathProgramCache]: Analyzing trace with hash 929912104, now seen corresponding path program 1 times [2020-10-27 00:38:18,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:38:18,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932262129] [2020-10-27 00:38:18,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:38:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:18,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:19,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:22,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:22,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1001 [2020-10-27 00:38:22,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:38:22,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3405 [2020-10-27 00:38:22,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-27 00:38:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:38:22,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:22,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:38:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:22,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:22,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:22,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:38:22,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:22,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:38:22,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:22,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:38:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:22,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:22,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:22,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:38:22,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:22,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-27 00:38:22,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:22,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:22,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:22,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:22,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:22,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:38:22,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:22,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 00:38:22,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:22,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:22,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:22,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:22,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:22,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:38:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:22,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:22,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:22,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:38:22,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:22,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:38:22,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:22,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:22,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:22,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:22,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:22,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:38:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:23,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:23,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:23,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 00:38:23,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:23,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 00:38:23,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-27 00:38:23,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:23,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:23,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:23,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:23,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 00:38:23,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:23,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:38:23,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:23,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:23,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 00:38:23,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:23,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-27 00:38:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:23,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:23,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:23,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:38:23,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:23,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 00:38:23,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:23,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:23,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:38:23,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:38:23,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-27 00:38:24,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932262129] [2020-10-27 00:38:24,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:38:24,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:38:24,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461327109] [2020-10-27 00:38:24,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:38:24,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:38:24,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:38:24,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:38:24,620 INFO L87 Difference]: Start difference. First operand 24838 states and 28175 transitions. Second operand 7 states. [2020-10-27 00:38:33,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:38:33,981 INFO L93 Difference]: Finished difference Result 50436 states and 57146 transitions. [2020-10-27 00:38:33,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:38:33,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 979 [2020-10-27 00:38:33,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:38:34,050 INFO L225 Difference]: With dead ends: 50436 [2020-10-27 00:38:34,050 INFO L226 Difference]: Without dead ends: 25604 [2020-10-27 00:38:34,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:38:34,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25604 states. [2020-10-27 00:38:34,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25604 to 24842. [2020-10-27 00:38:34,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24842 states. [2020-10-27 00:38:34,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24842 states to 24842 states and 28193 transitions. [2020-10-27 00:38:34,560 INFO L78 Accepts]: Start accepts. Automaton has 24842 states and 28193 transitions. Word has length 979 [2020-10-27 00:38:34,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:38:34,563 INFO L481 AbstractCegarLoop]: Abstraction has 24842 states and 28193 transitions. [2020-10-27 00:38:34,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:38:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand 24842 states and 28193 transitions. [2020-10-27 00:38:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2020-10-27 00:38:34,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:38:34,582 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:38:34,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:38:34,583 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:38:34,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:38:34,584 INFO L82 PathProgramCache]: Analyzing trace with hash -362969113, now seen corresponding path program 1 times [2020-10-27 00:38:34,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:38:34,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765231399] [2020-10-27 00:38:34,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:38:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:34,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:35,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:37,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:37,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1015 [2020-10-27 00:38:37,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:38:37,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3022 [2020-10-27 00:38:37,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:37,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:37,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:38:37,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 00:38:37,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:38,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:38:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:38,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:38,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:38,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:38:38,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:38,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:38:38,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:38,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:38,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:38,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:38,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:38:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:38,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:38,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:38,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:38:38,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:38,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 00:38:38,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:38,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:38,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:38,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:38,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:38,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:38,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:38,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:38,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:38:38,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:38,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 00:38:38,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:38,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:38,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:38,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:38,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:38,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:38:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:38,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:38,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:38,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:38:38,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:38,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:38:38,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:38,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:38,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:38,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:38,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:38,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:38:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:38,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:39,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:39,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:38:39,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:39,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 00:38:39,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:39,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:39,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:39,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:38:39,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:39,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:39,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:39,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:39,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:38:39,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:39,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:38:39,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:39,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:38:39,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:39,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:38:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:39,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:39,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 00:38:39,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:39,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 00:38:39,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:39,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:39,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:38:39,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 00:38:39,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 337 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:38:39,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765231399] [2020-10-27 00:38:39,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:38:39,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:38:39,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97784695] [2020-10-27 00:38:39,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:38:39,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:38:39,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:38:39,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:38:39,760 INFO L87 Difference]: Start difference. First operand 24842 states and 28193 transitions. Second operand 7 states. [2020-10-27 00:38:50,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:38:50,355 INFO L93 Difference]: Finished difference Result 59130 states and 68850 transitions. [2020-10-27 00:38:50,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:38:50,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 993 [2020-10-27 00:38:50,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:38:50,469 INFO L225 Difference]: With dead ends: 59130 [2020-10-27 00:38:50,469 INFO L226 Difference]: Without dead ends: 34294 [2020-10-27 00:38:50,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:38:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34294 states. [2020-10-27 00:38:51,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34294 to 33452. [2020-10-27 00:38:51,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33452 states. [2020-10-27 00:38:51,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33452 states to 33452 states and 38248 transitions. [2020-10-27 00:38:51,148 INFO L78 Accepts]: Start accepts. Automaton has 33452 states and 38248 transitions. Word has length 993 [2020-10-27 00:38:51,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:38:51,150 INFO L481 AbstractCegarLoop]: Abstraction has 33452 states and 38248 transitions. [2020-10-27 00:38:51,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:38:51,150 INFO L276 IsEmpty]: Start isEmpty. Operand 33452 states and 38248 transitions. [2020-10-27 00:38:51,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1116 [2020-10-27 00:38:51,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:38:51,167 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:38:51,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:38:51,167 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:38:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:38:51,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1238248914, now seen corresponding path program 1 times [2020-10-27 00:38:51,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:38:51,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973242608] [2020-10-27 00:38:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:38:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:51,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:52,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:55,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:55,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1139 [2020-10-27 00:38:55,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:38:55,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3997 [2020-10-27 00:38:55,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:55,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:55,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:38:55,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 00:38:55,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:55,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:38:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:55,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:55,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:55,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:38:55,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:55,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:38:55,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:55,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:55,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:55,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:55,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:55,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:38:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:55,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:55,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:55,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:38:55,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:55,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 00:38:55,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:55,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:55,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:55,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:55,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:55,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:56,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:56,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:56,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:38:56,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:56,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:38:56,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:56,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:56,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:56,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:56,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:38:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:56,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:56,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:56,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:38:56,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:56,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:38:56,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:56,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:56,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:38:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:56,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:56,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:56,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:38:56,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:56,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:38:56,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:56,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:56,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:38:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:56,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:56,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:56,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:38:56,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:56,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:38:56,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:56,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:38:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:56,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:38:56,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:56,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:38:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:56,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:56,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:56,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:38:56,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:56,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 00:38:56,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:38:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:38:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:38:56,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:56,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:38:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:38:56,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:38:56,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:38:56,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:38:56,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:38:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 00:38:56,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:38:56,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:38:56,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:38:56,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:38:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:38:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 424 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-27 00:38:57,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973242608] [2020-10-27 00:38:57,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:38:57,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:38:57,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437481798] [2020-10-27 00:38:57,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:38:57,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:38:57,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:38:57,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:38:57,277 INFO L87 Difference]: Start difference. First operand 33452 states and 38248 transitions. Second operand 7 states. [2020-10-27 00:39:14,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:39:14,364 INFO L93 Difference]: Finished difference Result 74163 states and 85951 transitions. [2020-10-27 00:39:14,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:39:14,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1115 [2020-10-27 00:39:14,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:39:14,477 INFO L225 Difference]: With dead ends: 74163 [2020-10-27 00:39:14,477 INFO L226 Difference]: Without dead ends: 40717 [2020-10-27 00:39:14,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:39:14,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40717 states. [2020-10-27 00:39:15,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40717 to 39174. [2020-10-27 00:39:15,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39174 states. [2020-10-27 00:39:15,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39174 states to 39174 states and 44516 transitions. [2020-10-27 00:39:15,383 INFO L78 Accepts]: Start accepts. Automaton has 39174 states and 44516 transitions. Word has length 1115 [2020-10-27 00:39:15,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:39:15,385 INFO L481 AbstractCegarLoop]: Abstraction has 39174 states and 44516 transitions. [2020-10-27 00:39:15,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:39:15,385 INFO L276 IsEmpty]: Start isEmpty. Operand 39174 states and 44516 transitions. [2020-10-27 00:39:15,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1227 [2020-10-27 00:39:15,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:39:15,408 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:39:15,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:39:15,409 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:39:15,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:39:15,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1616544939, now seen corresponding path program 1 times [2020-10-27 00:39:15,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:39:15,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845215755] [2020-10-27 00:39:15,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:39:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:15,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:20,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:20,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1252 [2020-10-27 00:39:20,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:39:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 00:39:20,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:39:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:39:20,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 00:39:20,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:20,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:39:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:20,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:20,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:20,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:39:20,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:20,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:39:20,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:20,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:20,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:20,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:20,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:21,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:39:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:21,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:21,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:21,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:39:21,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:21,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 00:39:21,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:21,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:21,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:21,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:21,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:21,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:39:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:21,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:21,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:21,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:39:21,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:21,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 00:39:21,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:21,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:21,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:21,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:21,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:21,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:39:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:21,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:21,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:21,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:39:21,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:39:21,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:21,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:39:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:21,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:21,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:21,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:39:21,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:21,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:39:21,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:21,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:21,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:21,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:21,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:21,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:39:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:21,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:21,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:21,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:39:21,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:21,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:39:21,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:21,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:21,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:21,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:39:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:21,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:21,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:21,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:39:21,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:21,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:39:21,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:21,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:39:21,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:21,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:39:21,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:39:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:21,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:21,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:21,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:39:21,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:21,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:39:21,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:39:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:39:21,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:39:21,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:21,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-27 00:39:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:39:21,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:39:21,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:39:21,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:39:21,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:39:21,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 00:39:21,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:39:21,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:39:21,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:39:21,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:39:21,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:39:22,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1479 backedges. 556 proven. 2 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2020-10-27 00:39:22,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845215755] [2020-10-27 00:39:22,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:39:22,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:39:22,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287988932] [2020-10-27 00:39:22,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:39:22,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:39:22,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:39:22,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:39:22,604 INFO L87 Difference]: Start difference. First operand 39174 states and 44516 transitions. Second operand 7 states.