/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/seq-mthreaded/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:55:46,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:55:46,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:55:46,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:55:46,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:55:46,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:55:46,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:55:46,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:55:46,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:55:46,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:55:46,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:55:46,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:55:46,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:55:46,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:55:46,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:55:46,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:55:46,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:55:46,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:55:46,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:55:46,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:55:46,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:55:46,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:55:46,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:55:46,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:55:46,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:55:46,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:55:46,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:55:46,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:55:46,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:55:46,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:55:46,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:55:46,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:55:46,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:55:46,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:55:46,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:55:46,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:55:46,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:55:46,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:55:46,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:55:46,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:55:46,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:55:46,330 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 [2020-10-28 17:55:46,358 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:55:46,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:55:46,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:55:46,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:55:46,360 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:55:46,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:55:46,361 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:55:46,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:55:46,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:55:46,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:55:46,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:55:46,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:55:46,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:55:46,362 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:55:46,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:55:46,363 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:55:46,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:55:46,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:55:46,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:55:46,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:55:46,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:55:46,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:55:46,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:55:46,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:55:46,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:55:46,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:55:46,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:55:46,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:55:46,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:55:46,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:55:46,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:55:46,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:55:46,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:55:46,820 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:55:46,821 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:55:46,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-10-28 17:55:46,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4119bbb46/172b6c2cdcd7477ebda3b517e02fb609/FLAG6a8b9e975 [2020-10-28 17:55:47,544 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:55:47,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-10-28 17:55:47,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4119bbb46/172b6c2cdcd7477ebda3b517e02fb609/FLAG6a8b9e975 [2020-10-28 17:55:47,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4119bbb46/172b6c2cdcd7477ebda3b517e02fb609 [2020-10-28 17:55:47,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:55:47,878 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:55:47,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:55:47,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:55:47,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:55:47,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:55:47" (1/1) ... [2020-10-28 17:55:47,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@abc06e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:47, skipping insertion in model container [2020-10-28 17:55:47,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:55:47" (1/1) ... [2020-10-28 17:55:47,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:55:47,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:55:48,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:55:48,367 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:55:48,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:55:48,526 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:55:48,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:48 WrapperNode [2020-10-28 17:55:48,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:55:48,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:55:48,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:55:48,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:55:48,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:48" (1/1) ... [2020-10-28 17:55:48,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:48" (1/1) ... [2020-10-28 17:55:48,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:48" (1/1) ... [2020-10-28 17:55:48,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:48" (1/1) ... [2020-10-28 17:55:48,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:48" (1/1) ... [2020-10-28 17:55:48,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:48" (1/1) ... [2020-10-28 17:55:48,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:48" (1/1) ... [2020-10-28 17:55:48,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:55:48,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:55:48,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:55:48,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:55:48,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:55:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:55:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:55:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:55:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 17:55:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:55:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:55:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:55:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:55:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:55:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:55:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:55:48,707 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:55:48,707 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:55:48,707 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:55:48,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:55:48,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:55:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 17:55:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:55:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:55:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 17:55:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:55:48,708 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:55:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:55:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:55:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:55:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:55:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:55:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:55:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:55:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:55:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:55:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:55:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:55:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:55:49,558 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:55:49,559 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:55:49,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:55:49 BoogieIcfgContainer [2020-10-28 17:55:49,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:55:49,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:55:49,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:55:49,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:55:49,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:55:47" (1/3) ... [2020-10-28 17:55:49,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9318f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:55:49, skipping insertion in model container [2020-10-28 17:55:49,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:55:48" (2/3) ... [2020-10-28 17:55:49,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9318f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:55:49, skipping insertion in model container [2020-10-28 17:55:49,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:55:49" (3/3) ... [2020-10-28 17:55:49,570 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-10-28 17:55:49,581 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:55:49,586 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:55:49,597 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:55:49,625 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:55:49,625 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:55:49,625 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:55:49,625 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:55:49,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:55:49,626 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:55:49,626 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:55:49,626 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:55:49,649 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-10-28 17:55:49,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 17:55:49,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:49,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:55:49,662 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:49,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:49,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1255270413, now seen corresponding path program 1 times [2020-10-28 17:55:49,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:49,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182043658] [2020-10-28 17:55:49,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:50,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:50,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:50,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:55:50,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:50,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-28 17:55:50,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:50,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:50,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:50,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:55:50,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:50,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:55:50,922 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:55:50,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:55:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:50,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:50,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:50,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:55:50,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:50,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 17:55:50,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:50,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:50,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:50,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:50,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:50,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:55:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:51,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:55:51,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:51,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 17:55:51,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:51,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:51,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:51,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:55:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:51,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:51,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:55:51,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:51,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:55:51,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:51,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:55:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:55:51,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:55:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:51,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:51,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:51,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:51,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:55:51,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:51,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:51,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:55:51,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:55:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:51,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:51,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:51,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:51,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:55:51,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:51,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:51,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:51,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:51,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 17:55:51,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:55:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:51,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:51,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:51,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:51,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:55:51,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:51,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:51,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:51,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:55:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:51,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:51,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:51,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:55:51,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:51,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:55:51,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:51,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:55:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:51,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:55:51,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182043658] [2020-10-28 17:55:51,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:55:51,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:55:51,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219209796] [2020-10-28 17:55:51,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:55:51,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:55:51,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:55:51,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:55:51,366 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 6 states. [2020-10-28 17:55:52,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:55:52,781 INFO L93 Difference]: Finished difference Result 307 states and 486 transitions. [2020-10-28 17:55:52,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:55:52,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-28 17:55:52,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:55:52,795 INFO L225 Difference]: With dead ends: 307 [2020-10-28 17:55:52,796 INFO L226 Difference]: Without dead ends: 193 [2020-10-28 17:55:52,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:55:52,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-28 17:55:52,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 175. [2020-10-28 17:55:52,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-28 17:55:52,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 280 transitions. [2020-10-28 17:55:52,886 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 280 transitions. Word has length 66 [2020-10-28 17:55:52,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:55:52,888 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 280 transitions. [2020-10-28 17:55:52,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:55:52,888 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 280 transitions. [2020-10-28 17:55:52,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 17:55:52,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:52,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:55:52,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:55:52,900 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:52,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:52,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1194329717, now seen corresponding path program 1 times [2020-10-28 17:55:52,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:52,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646554043] [2020-10-28 17:55:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:53,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:53,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:53,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:55:53,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:53,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-10-28 17:55:53,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:53,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:55:53,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 17:55:53,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:55:53,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:54,137 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:55:54,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:55:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:54,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:54,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:54,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:55:54,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:54,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:55:54,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:54,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:54,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:55:54,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:55:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:54,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:54,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:54,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 17:55:54,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:54,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 17:55:54,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:54,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:55:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:55:54,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 17:55:54,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:54,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 17:55:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:54,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:54,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:54,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:55:54,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:54,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:55:54,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:54,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:54,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:55:54,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:55:54,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:55:54,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:55:54,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:55:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:54,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:54,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:54,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:54,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:54,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:55:54,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:54,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:54,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:54,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:54,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:54,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:55:54,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:55:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:54,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:54,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:54,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:54,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:54,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:55:54,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:54,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:54,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:54,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:54,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:54,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:54,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:55:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:54,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:54,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:54,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:55:54,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:54,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:55:54,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:54,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:54,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:55:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:54,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:54,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:55:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:54,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:55:54,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:55:54,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:55:54,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:55:54,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:55:54,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:55:54,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:55:54,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:55:54,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:55:54,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:55:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:55:54,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646554043] [2020-10-28 17:55:54,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:55:54,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:55:54,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675593409] [2020-10-28 17:55:54,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:55:54,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:55:54,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:55:54,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:55:54,595 INFO L87 Difference]: Start difference. First operand 175 states and 280 transitions. Second operand 12 states. [2020-10-28 17:55:55,311 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:55:55,665 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 17:55:56,102 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:55:56,440 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:55:58,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:55:58,353 INFO L93 Difference]: Finished difference Result 302 states and 474 transitions. [2020-10-28 17:55:58,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:55:58,354 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-28 17:55:58,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:55:58,362 INFO L225 Difference]: With dead ends: 302 [2020-10-28 17:55:58,363 INFO L226 Difference]: Without dead ends: 193 [2020-10-28 17:55:58,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:55:58,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-28 17:55:58,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 175. [2020-10-28 17:55:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-28 17:55:58,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 250 transitions. [2020-10-28 17:55:58,396 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 250 transitions. Word has length 66 [2020-10-28 17:55:58,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:55:58,397 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 250 transitions. [2020-10-28 17:55:58,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:55:58,397 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 250 transitions. [2020-10-28 17:55:58,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 17:55:58,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:55:58,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:55:58,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:55:58,400 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:55:58,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:55:58,401 INFO L82 PathProgramCache]: Analyzing trace with hash 120280502, now seen corresponding path program 1 times [2020-10-28 17:55:58,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:55:58,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538190545] [2020-10-28 17:55:58,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:55:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:55:58,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:58,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:58,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:55:59,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:03,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:03,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 17:56:03,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:56:03,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-28 17:56:03,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:03,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:56:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:56:03,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 17:56:03,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:03,846 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:56:03,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:56:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:03,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:03,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:03,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:56:03,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:03,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:56:03,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:03,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:03,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:03,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:56:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:03,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:03,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:03,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:56:03,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:03,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 17:56:03,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:03,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:03,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:03,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:03,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:56:03,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:03,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:56:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:03,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:03,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:03,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:56:03,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:03,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:56:03,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:03,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:03,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:03,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:04,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:56:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:04,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:04,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:04,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:04,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:04,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:56:04,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:04,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:04,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:04,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:04,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:04,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:56:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:04,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:04,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:04,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:04,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:04,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:56:04,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:04,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:04,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:04,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:56:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:04,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:04,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:04,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:04,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:04,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 17:56:04,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:04,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:04,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:56:04,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:56:04,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:56:04,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:04,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 17:56:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:04,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:04,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:56:04,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:04,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:56:04,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:04,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:56:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:56:04,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538190545] [2020-10-28 17:56:04,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:56:04,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:56:04,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884737195] [2020-10-28 17:56:04,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:56:04,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:56:04,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:56:04,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:56:04,237 INFO L87 Difference]: Start difference. First operand 175 states and 250 transitions. Second operand 9 states. [2020-10-28 17:56:04,610 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:56:07,469 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:56:07,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:56:07,987 INFO L93 Difference]: Finished difference Result 423 states and 632 transitions. [2020-10-28 17:56:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:56:07,990 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-28 17:56:07,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:56:08,001 INFO L225 Difference]: With dead ends: 423 [2020-10-28 17:56:08,001 INFO L226 Difference]: Without dead ends: 320 [2020-10-28 17:56:08,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:56:08,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-28 17:56:08,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 277. [2020-10-28 17:56:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-28 17:56:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 409 transitions. [2020-10-28 17:56:08,087 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 409 transitions. Word has length 95 [2020-10-28 17:56:08,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:56:08,089 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 409 transitions. [2020-10-28 17:56:08,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:56:08,089 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 409 transitions. [2020-10-28 17:56:08,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 17:56:08,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:56:08,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:56:08,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:56:08,097 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:56:08,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:56:08,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1377958529, now seen corresponding path program 1 times [2020-10-28 17:56:08,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:56:08,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648453544] [2020-10-28 17:56:08,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:56:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:08,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:08,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:08,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:08,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:08,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:13,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:13,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 17:56:13,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:56:13,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:56:13,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:13,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:56:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 17:56:13,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:13,555 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:56:13,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:56:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:13,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:13,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:13,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:56:13,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:56:13,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:13,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:13,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:13,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:13,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:56:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:13,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:13,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:13,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:56:13,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:13,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 17:56:13,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:13,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:56:13,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:13,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:56:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:13,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:13,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:13,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:56:13,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:13,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:56:13,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:13,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:13,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:13,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:13,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:13,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:13,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:56:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:13,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:13,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:13,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:13,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:13,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:56:13,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:13,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:13,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:13,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:13,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:56:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:13,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:13,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:13,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:13,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:13,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:56:13,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:13,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:13,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:13,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:13,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:56:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:13,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:13,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:13,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:56:13,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:13,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:56:13,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:13,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:13,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:13,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:56:13,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:56:13,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:13,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 17:56:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:13,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:13,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:13,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:56:13,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:13,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:13,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:13,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:13,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:56:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:13,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:56:14,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648453544] [2020-10-28 17:56:14,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:56:14,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:56:14,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128611931] [2020-10-28 17:56:14,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:56:14,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:56:14,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:56:14,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:56:14,027 INFO L87 Difference]: Start difference. First operand 277 states and 409 transitions. Second operand 9 states. [2020-10-28 17:56:14,371 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:56:14,683 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 17:56:15,038 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:56:15,337 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:56:16,455 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:56:18,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:56:18,896 INFO L93 Difference]: Finished difference Result 862 states and 1284 transitions. [2020-10-28 17:56:18,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 17:56:18,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-10-28 17:56:18,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:56:18,902 INFO L225 Difference]: With dead ends: 862 [2020-10-28 17:56:18,902 INFO L226 Difference]: Without dead ends: 611 [2020-10-28 17:56:18,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:56:18,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-10-28 17:56:18,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 546. [2020-10-28 17:56:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-10-28 17:56:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 799 transitions. [2020-10-28 17:56:18,961 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 799 transitions. Word has length 97 [2020-10-28 17:56:18,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:56:18,962 INFO L481 AbstractCegarLoop]: Abstraction has 546 states and 799 transitions. [2020-10-28 17:56:18,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:56:18,962 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 799 transitions. [2020-10-28 17:56:18,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 17:56:18,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:56:18,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:56:18,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:56:18,964 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:56:18,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:56:18,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1285733905, now seen corresponding path program 1 times [2020-10-28 17:56:18,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:56:18,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493280935] [2020-10-28 17:56:18,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:56:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:19,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:19,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:19,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:19,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:21,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:24,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:24,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 17:56:24,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:56:24,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 17:56:24,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:24,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:56:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 17:56:24,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:24,403 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:56:24,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:56:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:24,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:24,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:24,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:56:24,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:24,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:56:24,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:24,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:24,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:24,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:56:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:24,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:24,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:24,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:56:24,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:24,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 17:56:24,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:24,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:24,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:56:24,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:24,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:56:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:24,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:24,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:24,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:56:24,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:24,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:56:24,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:24,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:24,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:24,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:56:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:24,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:24,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:24,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:24,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:24,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:56:24,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:24,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:24,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:24,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:24,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:24,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:24,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:56:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:24,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:24,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:24,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:24,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:24,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:56:24,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:24,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:24,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:24,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:24,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 17:56:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:24,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:24,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:24,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:56:24,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:56:24,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:24,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:56:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:56:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:24,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 17:56:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:24,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:24,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:56:24,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:24,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:24,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:24,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:24,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:56:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:24,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:56:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:56:24,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493280935] [2020-10-28 17:56:24,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:56:24,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:56:24,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557460270] [2020-10-28 17:56:24,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:56:24,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:56:24,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:56:24,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:56:24,849 INFO L87 Difference]: Start difference. First operand 546 states and 799 transitions. Second operand 9 states. [2020-10-28 17:56:25,181 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:56:25,548 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 17:56:26,024 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 17:56:26,669 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-10-28 17:56:27,748 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:56:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:56:31,262 INFO L93 Difference]: Finished difference Result 2099 states and 3076 transitions. [2020-10-28 17:56:31,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:56:31,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2020-10-28 17:56:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:56:31,273 INFO L225 Difference]: With dead ends: 2099 [2020-10-28 17:56:31,273 INFO L226 Difference]: Without dead ends: 1610 [2020-10-28 17:56:31,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:56:31,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2020-10-28 17:56:31,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1444. [2020-10-28 17:56:31,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-10-28 17:56:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2093 transitions. [2020-10-28 17:56:31,469 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2093 transitions. Word has length 98 [2020-10-28 17:56:31,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:56:31,470 INFO L481 AbstractCegarLoop]: Abstraction has 1444 states and 2093 transitions. [2020-10-28 17:56:31,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:56:31,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2093 transitions. [2020-10-28 17:56:31,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 17:56:31,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:56:31,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:56:31,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:56:31,481 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:56:31,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:56:31,482 INFO L82 PathProgramCache]: Analyzing trace with hash -241381491, now seen corresponding path program 1 times [2020-10-28 17:56:31,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:56:31,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278147370] [2020-10-28 17:56:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:56:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:31,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:31,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:31,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:36,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:36,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 17:56:36,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:56:36,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:56:36,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:36,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:36,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:56:36,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 17:56:36,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 17:56:36,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:36,864 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:56:36,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:56:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:36,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:36,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:36,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:56:36,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:36,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:56:36,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:36,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:36,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:36,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:36,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:36,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:36,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:56:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:36,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:36,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:36,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:37,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:37,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 17:56:37,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:56:37,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-28 17:56:37,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:37,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:37,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:56:37,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:37,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:56:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:37,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:37,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:37,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:56:37,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:37,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:56:37,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:37,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:37,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:37,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:37,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:37,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:56:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:37,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:37,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:37,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:37,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:37,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:56:37,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:37,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:37,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:37,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:37,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:56:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:37,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:37,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:37,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:37,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:37,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:56:37,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:37,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:56:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:56:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:56:37,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:37,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:56:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:37,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:37,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:37,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:56:37,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:56:37,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:37,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:56:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:37,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:37,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:56:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:37,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:37,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:37,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:56:37,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:37,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:37,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:37,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:37,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:56:37,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:37,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:37,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:56:37,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278147370] [2020-10-28 17:56:37,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:56:37,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:56:37,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618098533] [2020-10-28 17:56:37,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:56:37,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:56:37,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:56:37,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:56:37,702 INFO L87 Difference]: Start difference. First operand 1444 states and 2093 transitions. Second operand 9 states. [2020-10-28 17:56:38,043 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:56:40,965 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 17:56:41,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:56:41,455 INFO L93 Difference]: Finished difference Result 3801 states and 5679 transitions. [2020-10-28 17:56:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:56:41,457 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-28 17:56:41,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:56:41,474 INFO L225 Difference]: With dead ends: 3801 [2020-10-28 17:56:41,475 INFO L226 Difference]: Without dead ends: 2790 [2020-10-28 17:56:41,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:56:41,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2020-10-28 17:56:41,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2453. [2020-10-28 17:56:41,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2453 states. [2020-10-28 17:56:41,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 3619 transitions. [2020-10-28 17:56:41,705 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 3619 transitions. Word has length 99 [2020-10-28 17:56:41,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:56:41,706 INFO L481 AbstractCegarLoop]: Abstraction has 2453 states and 3619 transitions. [2020-10-28 17:56:41,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:56:41,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 3619 transitions. [2020-10-28 17:56:41,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 17:56:41,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:56:41,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:56:41,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:56:41,711 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:56:41,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:56:41,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1332767394, now seen corresponding path program 1 times [2020-10-28 17:56:41,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:56:41,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092842320] [2020-10-28 17:56:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:56:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:41,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:41,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:41,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:41,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:42,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:44,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:46,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:46,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 17:56:46,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:56:46,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 17:56:46,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:46,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:56:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 17:56:46,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:47,121 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:56:47,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:56:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:47,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:47,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:47,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:56:47,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:47,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:56:47,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:47,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:47,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:47,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:56:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:47,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:47,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:47,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:47,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:47,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 17:56:47,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:56:47,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-28 17:56:47,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:47,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:56:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:56:47,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 17:56:47,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:47,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:56:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:47,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:47,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:47,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:56:47,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:47,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:56:47,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:47,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:56:47,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:47,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:56:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:47,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:47,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:47,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:56:47,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:47,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:56:47,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:47,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:47,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:47,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:56:47,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:56:47,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:47,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:56:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:47,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:47,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:47,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:56:47,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:47,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:56:47,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:47,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:47,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:56:47,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:56:47,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:56:47,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:56:47,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:56:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:47,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:47,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:47,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:56:47,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:47,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:56:47,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:47,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:47,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:47,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:56:47,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:47,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:47,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:56:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:47,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:47,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:56:47,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:56:47,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:56:47,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:56:47,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:56:47,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:56:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:56:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:56:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:56:47,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:56:48,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:56:48,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092842320] [2020-10-28 17:56:48,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:56:48,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:56:48,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632234533] [2020-10-28 17:56:48,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:56:48,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:56:48,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:56:48,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:56:48,039 INFO L87 Difference]: Start difference. First operand 2453 states and 3619 transitions. Second operand 10 states. [2020-10-28 17:56:48,529 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:56:48,997 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:56:49,586 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:56:49,982 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 17:56:50,411 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 17:56:50,760 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 17:56:51,207 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 17:56:51,599 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:56:57,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:56:57,346 INFO L93 Difference]: Finished difference Result 7064 states and 10356 transitions. [2020-10-28 17:56:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 17:56:57,347 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2020-10-28 17:56:57,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:56:57,377 INFO L225 Difference]: With dead ends: 7064 [2020-10-28 17:56:57,377 INFO L226 Difference]: Without dead ends: 4475 [2020-10-28 17:56:57,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-28 17:56:57,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2020-10-28 17:56:57,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4018. [2020-10-28 17:56:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4018 states. [2020-10-28 17:56:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4018 states to 4018 states and 5811 transitions. [2020-10-28 17:56:57,745 INFO L78 Accepts]: Start accepts. Automaton has 4018 states and 5811 transitions. Word has length 101 [2020-10-28 17:56:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:56:57,746 INFO L481 AbstractCegarLoop]: Abstraction has 4018 states and 5811 transitions. [2020-10-28 17:56:57,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:56:57,746 INFO L276 IsEmpty]: Start isEmpty. Operand 4018 states and 5811 transitions. [2020-10-28 17:56:57,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 17:56:57,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:56:57,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:56:57,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:56:57,754 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:56:57,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:56:57,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1802677285, now seen corresponding path program 1 times [2020-10-28 17:56:57,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:56:57,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828633330] [2020-10-28 17:56:57,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:56:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:56:57,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:57,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:57,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:58,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:59,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:56:59,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:02,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:02,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 17:57:02,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:57:02,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 17:57:02,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:02,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:02,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:02,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:57:02,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 17:57:02,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:03,169 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:03,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:03,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:03,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:03,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:03,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:03,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:57:03,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:03,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:03,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:03,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:03,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:03,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:03,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:03,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:03,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:03,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:57:03,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:03,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 17:57:03,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:03,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:03,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:03,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:03,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:57:03,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:03,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:57:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:03,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:03,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:03,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:03,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:03,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:57:03,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:03,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:03,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:03,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:03,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:57:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:03,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:03,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:03,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:03,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:57:03,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:03,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:03,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:03,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:03,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:03,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:03,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:57:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:03,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:03,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:03,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:57:03,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:03,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:57:03,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:03,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:57:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:57:03,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:03,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 17:57:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:03,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:03,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:03,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:57:03,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:03,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:57:03,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:03,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:57:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:03,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:03,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:57:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:03,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:03,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:03,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:03,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:03,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:57:03,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:03,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:03,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:03,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828633330] [2020-10-28 17:57:03,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:03,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:57:03,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039159603] [2020-10-28 17:57:03,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:57:03,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:03,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:57:03,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:03,634 INFO L87 Difference]: Start difference. First operand 4018 states and 5811 transitions. Second operand 9 states. [2020-10-28 17:57:03,993 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:57:04,393 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:57:04,843 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 17:57:05,531 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-28 17:57:06,745 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:57:10,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:10,953 INFO L93 Difference]: Finished difference Result 6605 states and 9541 transitions. [2020-10-28 17:57:10,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:57:10,954 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-28 17:57:10,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:10,986 INFO L225 Difference]: With dead ends: 6605 [2020-10-28 17:57:10,986 INFO L226 Difference]: Without dead ends: 4998 [2020-10-28 17:57:10,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-28 17:57:11,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4998 states. [2020-10-28 17:57:11,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4998 to 4476. [2020-10-28 17:57:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4476 states. [2020-10-28 17:57:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 6456 transitions. [2020-10-28 17:57:11,355 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 6456 transitions. Word has length 101 [2020-10-28 17:57:11,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:11,355 INFO L481 AbstractCegarLoop]: Abstraction has 4476 states and 6456 transitions. [2020-10-28 17:57:11,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:57:11,356 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 6456 transitions. [2020-10-28 17:57:11,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 17:57:11,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:11,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:57:11,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:57:11,364 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:11,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:11,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1227738431, now seen corresponding path program 1 times [2020-10-28 17:57:11,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:11,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283882607] [2020-10-28 17:57:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:11,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:11,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:11,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:11,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:12,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:13,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:16,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:16,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 17:57:16,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:57:16,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 17:57:16,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:16,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:57:16,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 17:57:16,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:16,792 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:16,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:16,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:16,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:16,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:16,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:16,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:57:16,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:16,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:16,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:16,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:16,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:16,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:16,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:16,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:16,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:16,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:57:16,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:16,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 17:57:16,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:16,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:57:16,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:16,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:57:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:16,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:16,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:16,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:16,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:16,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:57:16,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:16,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:16,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:16,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:16,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:16,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:16,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:57:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:16,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:16,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:16,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:16,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:16,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:57:16,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:16,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:16,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:16,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:17,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:57:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:17,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:17,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:17,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:57:17,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:17,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:57:17,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:17,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:17,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:17,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:57:17,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:57:17,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:17,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 17:57:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:17,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:17,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:17,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:57:17,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:17,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:57:17,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:17,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:17,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:17,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:57:17,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:17,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:17,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 17:57:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:17,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:17,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:17,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:17,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:17,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:57:17,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:17,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:17,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:17,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:17,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:17,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:17,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:17,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283882607] [2020-10-28 17:57:17,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:17,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:57:17,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945098971] [2020-10-28 17:57:17,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:57:17,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:17,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:57:17,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:17,150 INFO L87 Difference]: Start difference. First operand 4476 states and 6456 transitions. Second operand 9 states. [2020-10-28 17:57:17,531 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:57:17,925 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 17:57:18,388 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 17:57:19,321 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:57:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:23,222 INFO L93 Difference]: Finished difference Result 12377 states and 18252 transitions. [2020-10-28 17:57:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:57:23,223 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-28 17:57:23,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:23,278 INFO L225 Difference]: With dead ends: 12377 [2020-10-28 17:57:23,278 INFO L226 Difference]: Without dead ends: 8963 [2020-10-28 17:57:23,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:57:23,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8963 states. [2020-10-28 17:57:23,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8963 to 8085. [2020-10-28 17:57:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8085 states. [2020-10-28 17:57:24,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8085 states to 8085 states and 11630 transitions. [2020-10-28 17:57:24,011 INFO L78 Accepts]: Start accepts. Automaton has 8085 states and 11630 transitions. Word has length 102 [2020-10-28 17:57:24,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:24,011 INFO L481 AbstractCegarLoop]: Abstraction has 8085 states and 11630 transitions. [2020-10-28 17:57:24,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:57:24,011 INFO L276 IsEmpty]: Start isEmpty. Operand 8085 states and 11630 transitions. [2020-10-28 17:57:24,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 17:57:24,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:24,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:57:24,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:57:24,026 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:24,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:24,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1714405558, now seen corresponding path program 1 times [2020-10-28 17:57:24,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:24,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885853908] [2020-10-28 17:57:24,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:24,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:24,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:24,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:24,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:25,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:25,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:29,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:29,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 17:57:29,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:57:29,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:57:29,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:29,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 17:57:29,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 17:57:29,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:29,421 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:29,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:29,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:29,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:29,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:29,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:29,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:57:29,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:29,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:29,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:29,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:29,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:29,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:29,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:29,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:57:29,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:29,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:57:29,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:29,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 17:57:29,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:29,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:57:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:29,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:29,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:29,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:29,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:29,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:57:29,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:29,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:29,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:29,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:57:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:29,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:29,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:29,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:29,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:29,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:57:29,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:29,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:29,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:29,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:29,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:57:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:29,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:29,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:57:29,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:29,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:57:29,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:29,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:57:29,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:29,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:57:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:29,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:29,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:29,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:29,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:57:29,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:57:29,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 17:57:29,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:29,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:57:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:57:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:57:29,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:29,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 17:57:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:29,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:29,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:29,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:29,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:29,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:57:29,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:29,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:29,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:29,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:29,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:29,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:29,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885853908] [2020-10-28 17:57:29,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:29,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:57:29,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638076663] [2020-10-28 17:57:29,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:57:29,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:29,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:57:29,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:29,744 INFO L87 Difference]: Start difference. First operand 8085 states and 11630 transitions. Second operand 9 states. [2020-10-28 17:57:30,568 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:57:33,963 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:57:34,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:34,524 INFO L93 Difference]: Finished difference Result 17153 states and 25128 transitions. [2020-10-28 17:57:34,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 17:57:34,525 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-28 17:57:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:34,580 INFO L225 Difference]: With dead ends: 17153 [2020-10-28 17:57:34,581 INFO L226 Difference]: Without dead ends: 11304 [2020-10-28 17:57:34,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-28 17:57:34,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11304 states. [2020-10-28 17:57:35,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11304 to 10095. [2020-10-28 17:57:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10095 states. [2020-10-28 17:57:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10095 states to 10095 states and 14540 transitions. [2020-10-28 17:57:35,600 INFO L78 Accepts]: Start accepts. Automaton has 10095 states and 14540 transitions. Word has length 103 [2020-10-28 17:57:35,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:35,600 INFO L481 AbstractCegarLoop]: Abstraction has 10095 states and 14540 transitions. [2020-10-28 17:57:35,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:57:35,600 INFO L276 IsEmpty]: Start isEmpty. Operand 10095 states and 14540 transitions. [2020-10-28 17:57:35,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 17:57:35,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:35,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:57:35,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:57:35,618 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:35,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:35,619 INFO L82 PathProgramCache]: Analyzing trace with hash -439189097, now seen corresponding path program 1 times [2020-10-28 17:57:35,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:35,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721578873] [2020-10-28 17:57:35,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:35,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:35,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:35,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:35,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:35,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:36,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:36,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:40,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:40,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:40,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 17:57:40,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 17:57:40,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:57:40,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:40,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:57:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 17:57:40,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:41,008 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:41,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:41,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:41,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:41,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:41,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:41,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:57:41,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:41,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:41,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:41,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:41,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:41,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:41,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:41,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:57:41,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:57:41,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-28 17:57:41,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:41,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:41,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:41,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-28 17:57:41,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 17:57:41,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:41,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:57:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:41,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:41,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:41,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:41,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:41,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:57:41,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:41,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:41,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:41,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:41,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:41,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:41,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:57:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:41,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:41,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:41,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:41,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:41,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:57:41,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:41,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:41,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:41,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:41,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:41,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:41,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:57:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:41,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:41,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:41,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:57:41,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:41,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:57:41,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:41,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:57:41,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:41,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:57:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:41,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:41,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:41,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:57:41,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:41,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:57:41,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:41,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:41,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:41,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:57:41,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:41,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:41,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 17:57:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:41,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:41,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:41,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:41,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:57:41,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:41,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:41,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:41,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721578873] [2020-10-28 17:57:41,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:41,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:57:41,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651901144] [2020-10-28 17:57:41,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:57:41,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:41,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:57:41,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:57:41,490 INFO L87 Difference]: Start difference. First operand 10095 states and 14540 transitions. Second operand 10 states. [2020-10-28 17:57:41,870 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:57:42,401 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:57:42,762 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:57:43,117 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 17:57:43,466 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:57:43,847 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-28 17:57:50,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:57:50,377 INFO L93 Difference]: Finished difference Result 25247 states and 36580 transitions. [2020-10-28 17:57:50,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:57:50,378 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-28 17:57:50,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:57:50,457 INFO L225 Difference]: With dead ends: 25247 [2020-10-28 17:57:50,457 INFO L226 Difference]: Without dead ends: 15153 [2020-10-28 17:57:50,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:57:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15153 states. [2020-10-28 17:57:51,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15153 to 14054. [2020-10-28 17:57:51,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14054 states. [2020-10-28 17:57:51,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14054 states to 14054 states and 20064 transitions. [2020-10-28 17:57:51,532 INFO L78 Accepts]: Start accepts. Automaton has 14054 states and 20064 transitions. Word has length 104 [2020-10-28 17:57:51,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:57:51,532 INFO L481 AbstractCegarLoop]: Abstraction has 14054 states and 20064 transitions. [2020-10-28 17:57:51,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:57:51,532 INFO L276 IsEmpty]: Start isEmpty. Operand 14054 states and 20064 transitions. [2020-10-28 17:57:51,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 17:57:51,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:57:51,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:57:51,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:57:51,552 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:57:51,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:57:51,553 INFO L82 PathProgramCache]: Analyzing trace with hash -908390776, now seen corresponding path program 1 times [2020-10-28 17:57:51,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:57:51,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914764745] [2020-10-28 17:57:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:57:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:51,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:51,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:51,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:51,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:51,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:56,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:56,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 17:57:56,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:57:56,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 17:57:56,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:56,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:56,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:56,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:57:56,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 17:57:56,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:56,921 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:57:56,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:57:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:56,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:56,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:56,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:57:56,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:57:56,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:56,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:56,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:56,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:57:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:56,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:56,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:56,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 17:57:56,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:56,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 17:57:56,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:56,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:56,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:57:56,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:56,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:57:56,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:57,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:57:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:57,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:57,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:57,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:57:57,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:57,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:57:57,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:57,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:57,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:57,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:57,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:57:57,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:57,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 17:57:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:57,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:57,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:57,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:57:57,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:57:57,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:57,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:57:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:57,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 17:57:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:57,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:57,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:57,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:57:57,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:57,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:57:57,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:57,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:57,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:57,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:57:57,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:57:57,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:57,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:57:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:57,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:57,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:57,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:57:57,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:57,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:57:57,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:57,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:57,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:57:57,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:57:57,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:57:57,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:57,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 17:57:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:57:57,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:57:57,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:57:57,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:57:57,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:57:57,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:57:57,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:57:57,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:57:57,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:57:57,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:57:57,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:57:57,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:57:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:57:57,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914764745] [2020-10-28 17:57:57,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:57:57,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:57:57,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603299698] [2020-10-28 17:57:57,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:57:57,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:57:57,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:57:57,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:57:57,249 INFO L87 Difference]: Start difference. First operand 14054 states and 20064 transitions. Second operand 9 states. [2020-10-28 17:57:57,585 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:57:57,952 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:57:58,340 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 17:57:59,288 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:58:03,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:03,755 INFO L93 Difference]: Finished difference Result 21770 states and 30960 transitions. [2020-10-28 17:58:03,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:58:03,756 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-10-28 17:58:03,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:03,824 INFO L225 Difference]: With dead ends: 21770 [2020-10-28 17:58:03,824 INFO L226 Difference]: Without dead ends: 17676 [2020-10-28 17:58:03,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:58:03,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17676 states. [2020-10-28 17:58:05,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17676 to 16370. [2020-10-28 17:58:05,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16370 states. [2020-10-28 17:58:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16370 states to 16370 states and 23230 transitions. [2020-10-28 17:58:05,374 INFO L78 Accepts]: Start accepts. Automaton has 16370 states and 23230 transitions. Word has length 105 [2020-10-28 17:58:05,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:05,374 INFO L481 AbstractCegarLoop]: Abstraction has 16370 states and 23230 transitions. [2020-10-28 17:58:05,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:58:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 16370 states and 23230 transitions. [2020-10-28 17:58:05,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 17:58:05,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:05,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:58:05,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:58:05,400 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:05,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:05,401 INFO L82 PathProgramCache]: Analyzing trace with hash 314597888, now seen corresponding path program 1 times [2020-10-28 17:58:05,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:05,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36908239] [2020-10-28 17:58:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:05,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:05,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:05,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:05,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:05,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:05,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:07,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:10,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:10,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 17:58:10,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:58:10,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:58:10,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:10,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:58:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 17:58:10,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:10,765 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:10,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:10,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:10,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:10,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:10,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:10,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:58:10,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:10,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:10,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:10,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:10,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:10,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:10,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:10,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:10,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:10,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:10,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:10,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:58:10,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:58:10,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 17:58:10,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:10,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 17:58:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 17:58:10,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:10,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:58:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:10,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:10,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:10,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:10,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:58:10,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:10,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:10,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:10,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:10,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:10,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:11,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:58:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:11,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:11,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:11,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:11,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:11,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:58:11,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:11,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:58:11,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:11,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 17:58:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:11,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:11,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:11,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:58:11,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:11,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:58:11,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:11,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:11,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:11,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:11,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:58:11,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:11,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:58:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:11,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:11,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:11,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:58:11,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:11,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:58:11,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:11,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:58:11,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:58:11,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:11,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 17:58:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:11,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:11,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:11,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:11,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:11,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:58:11,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:11,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:11,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:11,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:11,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:11,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36908239] [2020-10-28 17:58:11,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:11,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:58:11,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228143999] [2020-10-28 17:58:11,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:58:11,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:11,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:58:11,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:58:11,222 INFO L87 Difference]: Start difference. First operand 16370 states and 23230 transitions. Second operand 10 states. [2020-10-28 17:58:11,577 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:12,173 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 17:58:12,666 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:58:13,051 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 17:58:13,478 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 17:58:13,920 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-28 17:58:20,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:20,011 INFO L93 Difference]: Finished difference Result 28050 states and 39507 transitions. [2020-10-28 17:58:20,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 17:58:20,012 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 105 [2020-10-28 17:58:20,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:20,088 INFO L225 Difference]: With dead ends: 28050 [2020-10-28 17:58:20,088 INFO L226 Difference]: Without dead ends: 22142 [2020-10-28 17:58:20,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-28 17:58:20,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22142 states. [2020-10-28 17:58:21,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22142 to 20292. [2020-10-28 17:58:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20292 states. [2020-10-28 17:58:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20292 states to 20292 states and 28758 transitions. [2020-10-28 17:58:21,374 INFO L78 Accepts]: Start accepts. Automaton has 20292 states and 28758 transitions. Word has length 105 [2020-10-28 17:58:21,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:21,374 INFO L481 AbstractCegarLoop]: Abstraction has 20292 states and 28758 transitions. [2020-10-28 17:58:21,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:58:21,374 INFO L276 IsEmpty]: Start isEmpty. Operand 20292 states and 28758 transitions. [2020-10-28 17:58:21,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 17:58:21,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:21,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:58:21,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:58:21,403 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:21,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:21,403 INFO L82 PathProgramCache]: Analyzing trace with hash -283672841, now seen corresponding path program 1 times [2020-10-28 17:58:21,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:21,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983142394] [2020-10-28 17:58:21,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:21,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:21,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:21,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:21,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:23,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:23,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 17:58:23,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:58:23,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2398 [2020-10-28 17:58:23,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:23,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:58:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 17:58:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 17:58:23,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:24,145 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:24,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:24,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:24,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:24,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:24,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:24,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:58:24,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:24,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:24,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:24,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:24,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:24,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:24,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:24,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 17:58:24,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:24,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 17:58:24,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:24,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:24,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:24,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:24,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:58:24,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:24,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:58:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:24,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:24,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:24,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:24,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:24,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:58:24,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:24,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:24,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:24,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:58:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:24,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:24,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:24,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:58:24,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:24,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:58:24,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:24,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:24,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:58:24,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:58:24,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:58:24,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:24,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 17:58:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:24,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:24,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:24,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:58:24,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:24,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:58:24,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:24,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:58:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:24,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:24,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 17:58:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:24,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:24,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:24,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:58:24,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:58:24,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:24,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:58:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:24,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:58:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:24,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:24,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:24,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:24,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:58:24,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:24,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:24,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:24,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983142394] [2020-10-28 17:58:24,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:24,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:58:24,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324012177] [2020-10-28 17:58:24,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:58:24,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:24,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:58:24,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:58:24,426 INFO L87 Difference]: Start difference. First operand 20292 states and 28758 transitions. Second operand 9 states. [2020-10-28 17:58:24,777 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:27,523 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 17:58:29,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:29,470 INFO L93 Difference]: Finished difference Result 47210 states and 67728 transitions. [2020-10-28 17:58:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:58:29,471 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-28 17:58:29,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:29,583 INFO L225 Difference]: With dead ends: 47210 [2020-10-28 17:58:29,584 INFO L226 Difference]: Without dead ends: 30470 [2020-10-28 17:58:29,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:58:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30470 states. [2020-10-28 17:58:32,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30470 to 27503. [2020-10-28 17:58:32,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27503 states. [2020-10-28 17:58:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27503 states to 27503 states and 37888 transitions. [2020-10-28 17:58:32,142 INFO L78 Accepts]: Start accepts. Automaton has 27503 states and 37888 transitions. Word has length 106 [2020-10-28 17:58:32,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:32,143 INFO L481 AbstractCegarLoop]: Abstraction has 27503 states and 37888 transitions. [2020-10-28 17:58:32,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:58:32,143 INFO L276 IsEmpty]: Start isEmpty. Operand 27503 states and 37888 transitions. [2020-10-28 17:58:32,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 17:58:32,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:32,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:58:32,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:58:32,167 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:32,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:32,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1375076388, now seen corresponding path program 1 times [2020-10-28 17:58:32,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:32,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106577354] [2020-10-28 17:58:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:32,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:32,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:32,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:32,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:32,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:32,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:35,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:35,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:37,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:37,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 17:58:37,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 17:58:37,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 17:58:37,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:37,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:58:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 17:58:37,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:37,535 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:37,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:37,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:37,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:37,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:37,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:37,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:58:37,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:37,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:37,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:37,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:37,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:37,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:37,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:37,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:37,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:37,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:37,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:37,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 17:58:37,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:58:37,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 17:58:37,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:37,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:37,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:37,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:58:37,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 17:58:37,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:37,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:58:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:37,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:37,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:37,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:37,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:58:37,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:37,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:37,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:37,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:37,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:37,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 17:58:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:37,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:37,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:37,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:58:37,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:37,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:58:37,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:37,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:37,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:37,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:58:37,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:37,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:37,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 17:58:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:37,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:37,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:37,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:58:37,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:37,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:58:37,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:37,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:58:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:37,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:37,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 17:58:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:37,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:37,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 17:58:37,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:37,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:58:37,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:37,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:37,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:37,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 17:58:37,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:37,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:37,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 17:58:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:37,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:37,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:37,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:37,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:58:37,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:37,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:37,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106577354] [2020-10-28 17:58:37,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:37,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:58:37,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403922035] [2020-10-28 17:58:37,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:58:37,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:37,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:58:37,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:58:37,910 INFO L87 Difference]: Start difference. First operand 27503 states and 37888 transitions. Second operand 10 states. [2020-10-28 17:58:38,258 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:38,678 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 17:58:39,074 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-28 17:58:39,718 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:58:40,140 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 17:58:46,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:58:46,618 INFO L93 Difference]: Finished difference Result 68455 states and 95840 transitions. [2020-10-28 17:58:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 17:58:46,619 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-10-28 17:58:46,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:58:46,766 INFO L225 Difference]: With dead ends: 68455 [2020-10-28 17:58:46,766 INFO L226 Difference]: Without dead ends: 42432 [2020-10-28 17:58:46,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2020-10-28 17:58:46,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42432 states. [2020-10-28 17:58:49,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42432 to 39868. [2020-10-28 17:58:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39868 states. [2020-10-28 17:58:49,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39868 states to 39868 states and 54520 transitions. [2020-10-28 17:58:49,915 INFO L78 Accepts]: Start accepts. Automaton has 39868 states and 54520 transitions. Word has length 108 [2020-10-28 17:58:49,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:58:49,915 INFO L481 AbstractCegarLoop]: Abstraction has 39868 states and 54520 transitions. [2020-10-28 17:58:49,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:58:49,915 INFO L276 IsEmpty]: Start isEmpty. Operand 39868 states and 54520 transitions. [2020-10-28 17:58:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 17:58:49,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:58:49,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:58:49,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:58:49,934 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:58:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:58:49,935 INFO L82 PathProgramCache]: Analyzing trace with hash 769893348, now seen corresponding path program 1 times [2020-10-28 17:58:49,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:58:49,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474721025] [2020-10-28 17:58:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:58:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:49,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:50,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:50,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:50,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:50,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:54,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:54,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 17:58:54,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:58:54,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 17:58:54,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:54,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 17:58:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 17:58:54,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:55,329 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:58:55,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:58:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:55,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:55,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:55,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:58:55,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:55,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:58:55,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:55,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:55,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:55,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:58:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:55,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:55,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:55,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 17:58:55,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:55,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 17:58:55,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:55,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:55,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:58:55,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:55,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:58:55,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:55,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:58:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:55,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:55,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:55,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:58:55,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:55,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:58:55,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:55,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:58:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:58:55,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:55,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:58:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:55,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:55,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:55,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:58:55,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:58:55,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:55,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:58:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:58:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:58:55,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:55,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:58:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:55,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:55,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:55,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:58:55,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:55,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:58:55,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:55,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 17:58:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:55,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:55,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 17:58:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:55,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:55,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:55,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:58:55,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:55,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:58:55,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:55,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:58:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:55,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:58:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:58:55,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:58:55,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:58:55,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:58:55,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:58:55,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:58:55,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:58:55,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:58:55,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:58:55,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:58:55,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:58:55,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:58:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:58:55,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474721025] [2020-10-28 17:58:55,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:58:55,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:58:55,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648188873] [2020-10-28 17:58:55,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:58:55,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:58:55,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:58:55,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:58:55,673 INFO L87 Difference]: Start difference. First operand 39868 states and 54520 transitions. Second operand 9 states. [2020-10-28 17:58:56,060 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 17:58:56,456 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 17:58:56,860 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 17:58:57,893 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 17:59:03,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:59:03,021 INFO L93 Difference]: Finished difference Result 52574 states and 71724 transitions. [2020-10-28 17:59:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 17:59:03,022 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 109 [2020-10-28 17:59:03,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:59:03,154 INFO L225 Difference]: With dead ends: 52574 [2020-10-28 17:59:03,155 INFO L226 Difference]: Without dead ends: 39638 [2020-10-28 17:59:03,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:59:03,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39638 states. [2020-10-28 17:59:05,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39638 to 37196. [2020-10-28 17:59:05,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37196 states. [2020-10-28 17:59:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37196 states to 37196 states and 50754 transitions. [2020-10-28 17:59:05,853 INFO L78 Accepts]: Start accepts. Automaton has 37196 states and 50754 transitions. Word has length 109 [2020-10-28 17:59:05,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:59:05,854 INFO L481 AbstractCegarLoop]: Abstraction has 37196 states and 50754 transitions. [2020-10-28 17:59:05,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:59:05,854 INFO L276 IsEmpty]: Start isEmpty. Operand 37196 states and 50754 transitions. [2020-10-28 17:59:05,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 17:59:05,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:59:05,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:59:05,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 17:59:05,868 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:59:05,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:59:05,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1806733913, now seen corresponding path program 1 times [2020-10-28 17:59:05,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:59:05,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929035161] [2020-10-28 17:59:05,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:59:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:05,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:05,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:06,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:06,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:09,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:09,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 17:59:09,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:59:09,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3976 [2020-10-28 17:59:09,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:09,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:09,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:59:09,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 17:59:09,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 17:59:09,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:10,222 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 17:59:10,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:59:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:10,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:10,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:10,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:59:10,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:10,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:59:10,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:10,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:10,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:10,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:10,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:10,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:10,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:59:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:10,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:10,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:10,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 17:59:10,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:10,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 17:59:10,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:10,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:10,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:10,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:10,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 17:59:10,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:10,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:59:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:10,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:10,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:10,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:59:10,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:10,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:59:10,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:10,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:59:10,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:10,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 17:59:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:10,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:10,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:10,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:59:10,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:10,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:59:10,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:10,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:59:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:59:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:59:10,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:10,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 17:59:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:10,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:10,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:10,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:10,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 17:59:10,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:59:10,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:59:10,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:10,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:59:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:59:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 17:59:10,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:10,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 17:59:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:10,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:10,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:10,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 17:59:10,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:10,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:59:10,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:10,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:59:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:10,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:10,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 17:59:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:59:10,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:59:10,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:59:10,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:59:10,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:59:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:59:10,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:59:10,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:59:10,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:59:10,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:59:10,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:59:10,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:59:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:59:10,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929035161] [2020-10-28 17:59:10,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:59:10,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:59:10,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377739663] [2020-10-28 17:59:10,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:59:10,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:59:10,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:59:10,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:59:10,526 INFO L87 Difference]: Start difference. First operand 37196 states and 50754 transitions. Second operand 9 states. [2020-10-28 17:59:11,294 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 188