/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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.5.3.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:47:07,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:47:07,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:47:07,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:47:07,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:47:07,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:47:07,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:47:07,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:47:07,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:47:07,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:47:07,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:47:07,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:47:07,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:47:07,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:47:07,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:47:07,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:47:07,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:47:07,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:47:07,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:47:07,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:47:07,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:47:07,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:47:07,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:47:07,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:47:07,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:47:07,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:47:07,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:47:07,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:47:07,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:47:07,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:47:07,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:47:07,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:47:07,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:47:07,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:47:07,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:47:07,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:47:07,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:47:07,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:47:07,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:47:07,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:47:07,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:47:07,589 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 [2020-10-29 12:47:07,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:47:07,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:47:07,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:47:07,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:47:07,626 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:47:07,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:47:07,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:47:07,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:47:07,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:47:07,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:47:07,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:47:07,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:47:07,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:47:07,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:47:07,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:47:07,629 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:47:07,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:47:07,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:47:07,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:47:07,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:47:07,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:47:07,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:47:07,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:47:07,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:47:07,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:47:07,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:47:07,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:47:07,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:47:07,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:47:07,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:47:08,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:47:08,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:47:08,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:47:08,078 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:47:08,083 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:47:08,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c [2020-10-29 12:47:08,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/072540e8c/15407e999a1344c0a4517bdba41d2a93/FLAG7d3d74d81 [2020-10-29 12:47:09,066 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:47:09,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c [2020-10-29 12:47:09,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/072540e8c/15407e999a1344c0a4517bdba41d2a93/FLAG7d3d74d81 [2020-10-29 12:47:09,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/072540e8c/15407e999a1344c0a4517bdba41d2a93 [2020-10-29 12:47:09,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:47:09,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:47:09,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:47:09,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:47:09,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:47:09,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:47:09" (1/1) ... [2020-10-29 12:47:09,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b2f0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:09, skipping insertion in model container [2020-10-29 12:47:09,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:47:09" (1/1) ... [2020-10-29 12:47:09,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:47:09,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:47:10,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:47:10,060 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:47:10,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:47:10,248 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:47:10,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:10 WrapperNode [2020-10-29 12:47:10,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:47:10,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:47:10,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:47:10,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:47:10,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:10" (1/1) ... [2020-10-29 12:47:10,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:10" (1/1) ... [2020-10-29 12:47:10,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:10" (1/1) ... [2020-10-29 12:47:10,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:10" (1/1) ... [2020-10-29 12:47:10,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:10" (1/1) ... [2020-10-29 12:47:10,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:10" (1/1) ... [2020-10-29 12:47:10,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:10" (1/1) ... [2020-10-29 12:47:10,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:47:10,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:47:10,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:47:10,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:47:10,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:10" (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 [2020-10-29 12:47:10,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:47:10,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:47:10,550 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:47:10,551 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:47:10,551 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:47:10,551 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:47:10,552 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:47:10,552 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-29 12:47:10,552 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-29 12:47:10,553 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:47:10,554 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:47:10,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:47:10,554 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:47:10,554 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:47:10,554 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:47:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:47:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:47:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:47:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:47:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:47:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:47:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:47:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:47:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:47:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:47:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:47:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 12:47:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 12:47:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:47:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:47:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:47:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:47:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:47:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:47:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:47:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:47:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:47:13,307 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:47:13,308 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:47:13,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:47:13 BoogieIcfgContainer [2020-10-29 12:47:13,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:47:13,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:47:13,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:47:13,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:47:13,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:47:09" (1/3) ... [2020-10-29 12:47:13,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462ee6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:47:13, skipping insertion in model container [2020-10-29 12:47:13,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:47:10" (2/3) ... [2020-10-29 12:47:13,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@462ee6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:47:13, skipping insertion in model container [2020-10-29 12:47:13,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:47:13" (3/3) ... [2020-10-29 12:47:13,321 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c [2020-10-29 12:47:13,335 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:47:13,341 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:47:13,356 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:47:13,389 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:47:13,390 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:47:13,390 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:47:13,390 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:47:13,390 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:47:13,390 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:47:13,390 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:47:13,391 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:47:13,426 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states. [2020-10-29 12:47:13,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-29 12:47:13,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:47:13,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:47:13,456 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:47:13,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:47:13,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1718594068, now seen corresponding path program 1 times [2020-10-29 12:47:13,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:47:13,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475357319] [2020-10-29 12:47:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:47:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:14,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:15,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:15,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-29 12:47:15,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:15,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-10-29 12:47:15,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:15,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:15,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:15,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-29 12:47:15,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:15,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:47:16,458 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:47:16,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:47:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:16,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:16,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:16,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:47:16,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:16,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 12:47:16,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:16,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:16,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:16,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:16,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:16,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:16,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:47:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:16,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:16,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:16,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 12:47:16,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:16,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 12:47:16,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:16,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:16,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:16,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:16,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:16,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:16,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 12:47:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:16,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:16,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:16,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:47:16,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:16,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:47:16,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:16,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:47:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:16,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:17,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 12:47:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:17,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:17,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:17,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:17,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:17,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:47:17,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:17,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:17,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:17,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:17,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:17,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:17,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-29 12:47:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:17,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:17,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:17,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:47:17,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:17,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:17,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:17,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-29 12:47:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:17,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:17,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:17,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:17,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:17,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:47:17,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:17,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:17,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:17,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-29 12:47:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:17,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:17,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:17,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:17,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:17,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:47:17,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:17,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:17,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:17,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-29 12:47:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:17,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:17,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:17,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:17,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:17,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:47:17,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:17,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:17,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:17,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:17,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:17,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:17,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-29 12:47:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:17,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:17,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:17,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:47:17,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:17,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:47:17,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:17,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:47:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:17,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:47:17,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475357319] [2020-10-29 12:47:17,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:47:17,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 12:47:17,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116601206] [2020-10-29 12:47:17,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:47:17,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:47:17,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:47:17,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:47:17,473 INFO L87 Difference]: Start difference. First operand 777 states. Second operand 8 states. [2020-10-29 12:47:20,866 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:47:21,628 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:47:22,484 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:47:23,226 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:47:24,049 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:47:25,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:47:25,270 INFO L93 Difference]: Finished difference Result 1056 states and 1861 transitions. [2020-10-29 12:47:25,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:47:25,276 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-10-29 12:47:25,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:47:25,303 INFO L225 Difference]: With dead ends: 1056 [2020-10-29 12:47:25,303 INFO L226 Difference]: Without dead ends: 834 [2020-10-29 12:47:25,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:47:25,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-10-29 12:47:25,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 769. [2020-10-29 12:47:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-29 12:47:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1388 transitions. [2020-10-29 12:47:25,562 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1388 transitions. Word has length 188 [2020-10-29 12:47:25,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:47:25,563 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1388 transitions. [2020-10-29 12:47:25,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:47:25,564 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1388 transitions. [2020-10-29 12:47:25,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-29 12:47:25,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:47:25,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:47:25,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:47:25,570 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:47:25,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:47:25,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1274693394, now seen corresponding path program 1 times [2020-10-29 12:47:25,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:47:25,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788173914] [2020-10-29 12:47:25,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:47:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:25,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:28,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:28,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-29 12:47:28,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:28,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2736 [2020-10-29 12:47:28,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:28,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:28,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:47:28,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 12:47:28,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:47:28,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:29,740 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:47:29,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:47:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:29,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:29,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:29,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:47:29,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:29,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 12:47:29,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:29,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:29,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:29,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:29,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:29,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:29,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:47:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:29,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:30,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:30,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 12:47:30,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:30,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-29 12:47:30,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:30,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:47:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 12:47:30,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:30,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 12:47:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:30,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:30,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:30,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:47:30,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:30,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:47:30,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:30,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:30,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:47:30,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:47:30,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:47:30,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:30,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 12:47:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:30,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:30,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:30,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:30,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:30,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:47:30,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:30,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:30,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:30,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:30,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:30,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:30,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-29 12:47:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:30,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:30,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:30,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:30,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:30,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:47:30,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:30,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:30,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:30,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-29 12:47:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:30,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:30,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:30,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:30,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:30,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:47:30,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:30,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:30,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:30,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-29 12:47:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:30,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:30,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:30,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:30,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:47:30,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:30,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:30,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:30,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:30,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:30,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:31,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-29 12:47:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:31,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:31,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:31,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:31,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:47:31,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:31,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:31,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:31,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:31,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-29 12:47:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:31,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:31,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:31,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:47:31,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:31,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:47:31,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:31,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:31,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:31,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:47:31,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:31,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:47:31,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788173914] [2020-10-29 12:47:31,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:47:31,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:47:31,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138255104] [2020-10-29 12:47:31,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:47:31,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:47:31,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:47:31,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:47:31,216 INFO L87 Difference]: Start difference. First operand 769 states and 1388 transitions. Second operand 14 states. [2020-10-29 12:47:41,521 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 12:47:42,787 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-29 12:47:44,153 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-29 12:47:45,286 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-29 12:47:46,796 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:47:47,686 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:47:48,781 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:47:49,752 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:47:50,808 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:47:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:47:52,551 INFO L93 Difference]: Finished difference Result 1057 states and 1863 transitions. [2020-10-29 12:47:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:47:52,552 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-29 12:47:52,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:47:52,560 INFO L225 Difference]: With dead ends: 1057 [2020-10-29 12:47:52,560 INFO L226 Difference]: Without dead ends: 845 [2020-10-29 12:47:52,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:47:52,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-10-29 12:47:52,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 769. [2020-10-29 12:47:52,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-29 12:47:52,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1323 transitions. [2020-10-29 12:47:52,711 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1323 transitions. Word has length 188 [2020-10-29 12:47:52,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:47:52,711 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1323 transitions. [2020-10-29 12:47:52,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:47:52,711 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1323 transitions. [2020-10-29 12:47:52,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-29 12:47:52,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:47:52,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:47:52,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:47:52,716 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:47:52,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:47:52,717 INFO L82 PathProgramCache]: Analyzing trace with hash 595284816, now seen corresponding path program 1 times [2020-10-29 12:47:52,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:47:52,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920301575] [2020-10-29 12:47:52,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:47:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:52,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:53,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:54,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:57,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:57,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-29 12:47:57,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:47:57,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 12:47:57,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:57,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:57,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:47:57,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-29 12:47:57,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 12:47:57,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:58,992 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:47:58,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:47:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:59,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:59,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:59,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:47:59,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:59,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 12:47:59,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:59,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:59,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:47:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:59,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:59,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:59,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 12:47:59,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:59,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-29 12:47:59,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:59,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:47:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 12:47:59,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:59,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 12:47:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:59,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:59,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:47:59,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:59,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:47:59,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:59,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:59,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:47:59,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:59,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:47:59,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:59,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 12:47:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:59,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:59,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:59,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:59,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:59,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:47:59,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:59,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:59,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:47:59,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:47:59,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:47:59,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:59,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:47:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:59,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:59,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:59,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:59,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:59,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:47:59,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:59,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:59,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:59,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-29 12:47:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:59,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:59,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:59,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:59,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:59,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:47:59,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:59,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:59,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:59,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:59,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-29 12:47:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:59,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:59,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:59,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:59,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:59,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:47:59,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:59,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:59,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:00,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-29 12:48:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:00,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:00,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:00,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:00,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:00,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:48:00,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:00,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:00,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:48:00,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:00,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:48:00,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-29 12:48:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:00,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:00,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:00,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:48:00,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:00,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:48:00,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:00,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:00,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:00,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:48:00,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:00,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:48:00,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920301575] [2020-10-29 12:48:00,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:48:00,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:48:00,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246967841] [2020-10-29 12:48:00,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:48:00,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:48:00,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:48:00,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:48:00,206 INFO L87 Difference]: Start difference. First operand 769 states and 1323 transitions. Second operand 11 states. [2020-10-29 12:48:01,372 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-29 12:48:08,363 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:08,912 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:48:09,516 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:48:09,808 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:10,820 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:48:11,144 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:12,284 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:48:12,671 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:13,877 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:48:14,265 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:16,783 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-29 12:48:17,573 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:48:18,036 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:48:18,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:48:18,086 INFO L93 Difference]: Finished difference Result 1308 states and 2215 transitions. [2020-10-29 12:48:18,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:48:18,086 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 252 [2020-10-29 12:48:18,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:48:18,095 INFO L225 Difference]: With dead ends: 1308 [2020-10-29 12:48:18,095 INFO L226 Difference]: Without dead ends: 1102 [2020-10-29 12:48:18,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:48:18,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2020-10-29 12:48:18,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 963. [2020-10-29 12:48:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-10-29 12:48:18,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1636 transitions. [2020-10-29 12:48:18,269 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1636 transitions. Word has length 252 [2020-10-29 12:48:18,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:48:18,271 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1636 transitions. [2020-10-29 12:48:18,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:48:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1636 transitions. [2020-10-29 12:48:18,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-29 12:48:18,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:48:18,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:48:18,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:48:18,277 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:48:18,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:48:18,279 INFO L82 PathProgramCache]: Analyzing trace with hash -609344280, now seen corresponding path program 1 times [2020-10-29 12:48:18,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:48:18,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249386871] [2020-10-29 12:48:18,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:48:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:18,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:18,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:19,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:19,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:23,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:23,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-29 12:48:23,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:48:23,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 12:48:23,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:23,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:23,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:48:23,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:48:23,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-29 12:48:23,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:24,700 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:48:24,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:48:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:24,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:24,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:24,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:48:24,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:24,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:48:24,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:24,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:24,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:24,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:48:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:24,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:25,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:25,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 12:48:25,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:25,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-29 12:48:25,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:25,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:48:25,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:25,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:48:25,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:25,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 12:48:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:25,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:25,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:48:25,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:25,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:48:25,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:25,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:48:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:25,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:48:25,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:25,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 12:48:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:25,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:25,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:48:25,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:25,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:48:25,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:25,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:48:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:48:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:48:25,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:25,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-29 12:48:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:25,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:25,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:25,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:25,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:25,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:48:25,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:25,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:48:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:25,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:25,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-29 12:48:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:25,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:25,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:25,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:25,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:25,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:48:25,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:25,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:48:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:25,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:25,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-29 12:48:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:25,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:25,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:25,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:25,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:25,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:48:25,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:25,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:25,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:25,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:48:25,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:25,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:25,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-29 12:48:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:25,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:25,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:25,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:25,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:25,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:48:25,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:25,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:48:25,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:25,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:25,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-29 12:48:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:25,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:25,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:25,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:48:25,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:25,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:48:25,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:25,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:25,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:25,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:48:25,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:25,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:48:26,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249386871] [2020-10-29 12:48:26,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:48:26,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:48:26,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224734739] [2020-10-29 12:48:26,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:48:26,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:48:26,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:48:26,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:48:26,148 INFO L87 Difference]: Start difference. First operand 963 states and 1636 transitions. Second operand 11 states. [2020-10-29 12:48:27,283 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-29 12:48:28,470 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-29 12:48:29,700 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-29 12:48:33,127 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 412 DAG size of output: 408 [2020-10-29 12:48:52,109 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-29 12:48:52,710 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:48:53,157 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:53,909 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:48:55,065 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:48:55,482 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:48:55,876 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:57,155 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:48:57,726 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:48:58,103 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:59,356 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:48:59,960 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:00,437 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:49:01,797 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:02,415 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:02,906 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:49:05,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:49:05,579 INFO L93 Difference]: Finished difference Result 3836 states and 6539 transitions. [2020-10-29 12:49:05,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:49:05,582 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-29 12:49:05,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:49:05,597 INFO L225 Difference]: With dead ends: 3836 [2020-10-29 12:49:05,597 INFO L226 Difference]: Without dead ends: 2924 [2020-10-29 12:49:05,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:49:05,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2020-10-29 12:49:06,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 2610. [2020-10-29 12:49:06,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2610 states. [2020-10-29 12:49:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 4433 transitions. [2020-10-29 12:49:06,075 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 4433 transitions. Word has length 256 [2020-10-29 12:49:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:49:06,076 INFO L481 AbstractCegarLoop]: Abstraction has 2610 states and 4433 transitions. [2020-10-29 12:49:06,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:49:06,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 4433 transitions. [2020-10-29 12:49:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-29 12:49:06,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:49:06,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:49:06,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:49:06,086 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:49:06,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:49:06,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1270929201, now seen corresponding path program 1 times [2020-10-29 12:49:06,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:49:06,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305031590] [2020-10-29 12:49:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:49:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:06,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:06,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:07,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:07,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:08,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:08,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:11,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:11,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-29 12:49:11,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:49:11,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 12:49:11,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:11,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:11,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:49:11,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:49:11,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-29 12:49:11,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:12,382 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:49:12,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:49:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:12,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:12,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:12,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:49:12,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:12,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:49:12,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:12,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:12,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:12,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:49:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:12,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:12,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:12,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 12:49:12,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:12,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-29 12:49:12,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:12,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:12,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:49:12,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:12,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 12:49:12,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:13,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 12:49:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:13,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:13,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:13,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:49:13,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:13,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:49:13,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:13,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:49:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:13,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:49:13,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:13,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 12:49:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:13,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:13,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:13,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:49:13,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:13,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:49:13,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:13,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:13,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:49:13,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:49:13,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:49:13,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:13,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-29 12:49:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:13,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:13,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:13,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:13,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:13,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:49:13,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:13,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:49:13,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:13,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:13,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-29 12:49:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:13,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:13,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:13,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:13,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:13,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:49:13,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:13,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:49:13,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:13,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:13,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-29 12:49:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:13,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:13,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:13,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:13,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:13,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:49:13,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:13,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:13,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:49:13,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:13,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:13,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-29 12:49:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:13,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:13,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:13,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:13,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:13,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:49:13,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:13,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:13,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:13,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:49:13,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:13,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:13,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 12:49:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:13,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:13,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:13,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:49:13,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:13,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:49:13,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:13,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:13,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:13,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:49:13,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:13,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:49:13,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305031590] [2020-10-29 12:49:13,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:49:13,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:49:13,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175302588] [2020-10-29 12:49:13,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:49:13,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:49:13,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:49:13,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:49:13,635 INFO L87 Difference]: Start difference. First operand 2610 states and 4433 transitions. Second operand 11 states. [2020-10-29 12:49:14,811 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-29 12:49:15,918 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-29 12:49:17,654 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-29 12:49:18,811 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-29 12:49:33,447 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-29 12:49:34,043 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:34,491 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:36,005 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:36,508 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:37,588 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:38,317 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:39,433 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:40,268 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:41,496 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:42,264 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:44,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:49:44,469 INFO L93 Difference]: Finished difference Result 8385 states and 14253 transitions. [2020-10-29 12:49:44,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:49:44,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-29 12:49:44,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:49:44,500 INFO L225 Difference]: With dead ends: 8385 [2020-10-29 12:49:44,500 INFO L226 Difference]: Without dead ends: 5948 [2020-10-29 12:49:44,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-29 12:49:44,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5948 states. [2020-10-29 12:49:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5948 to 5349. [2020-10-29 12:49:45,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5349 states. [2020-10-29 12:49:45,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5349 states to 5349 states and 9025 transitions. [2020-10-29 12:49:45,398 INFO L78 Accepts]: Start accepts. Automaton has 5349 states and 9025 transitions. Word has length 257 [2020-10-29 12:49:45,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:49:45,398 INFO L481 AbstractCegarLoop]: Abstraction has 5349 states and 9025 transitions. [2020-10-29 12:49:45,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:49:45,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5349 states and 9025 transitions. [2020-10-29 12:49:45,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-29 12:49:45,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:49:45,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:49:45,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:49:45,418 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:49:45,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:49:45,419 INFO L82 PathProgramCache]: Analyzing trace with hash 746892456, now seen corresponding path program 1 times [2020-10-29 12:49:45,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:49:45,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831921355] [2020-10-29 12:49:45,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:49:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:45,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:45,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:45,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:46,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:46,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:47,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:50,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:50,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-29 12:49:50,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:49:50,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-29 12:49:50,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:50,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:50,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:49:50,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:49:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 12:49:50,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:51,797 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:49:51,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:49:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:51,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:51,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:51,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:49:51,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:49:51,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:51,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:51,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:51,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:51,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:51,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:49:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:51,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:52,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:52,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 12:49:52,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:52,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-29 12:49:52,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:52,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:49:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 12:49:52,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:52,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 12:49:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:52,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:52,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:52,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:49:52,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:52,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 12:49:52,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:52,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:52,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:49:52,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:52,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:49:52,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:52,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 12:49:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:52,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:52,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:52,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:49:52,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:52,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:49:52,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:52,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:52,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:49:52,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:49:52,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:49:52,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:52,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-29 12:49:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:52,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:52,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:52,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:52,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:52,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:49:52,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:52,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:49:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:52,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-29 12:49:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:52,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:52,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:52,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:52,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:52,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:49:52,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:52,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:49:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:52,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:52,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-29 12:49:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:52,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:52,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:52,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:52,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:52,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:49:52,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:52,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:52,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:52,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:49:52,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:52,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:52,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-29 12:49:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:52,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:52,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:52,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:52,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:52,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:49:52,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:52,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:49:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:52,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:52,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 12:49:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:52,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:52,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:52,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:49:52,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:52,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:49:52,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:52,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:52,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:52,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:49:52,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:52,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:49:53,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:49:53,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831921355] [2020-10-29 12:49:53,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:49:53,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:49:53,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611895691] [2020-10-29 12:49:53,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:49:53,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:49:53,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:49:53,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:49:53,012 INFO L87 Difference]: Start difference. First operand 5349 states and 9025 transitions. Second operand 11 states. [2020-10-29 12:49:54,226 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-29 12:49:55,517 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-29 12:49:56,763 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-29 12:50:01,340 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 413 DAG size of output: 411 [2020-10-29 12:50:22,287 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-29 12:50:22,924 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:50:23,400 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:50:24,124 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:50:25,383 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:50:25,848 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:50:26,271 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:50:27,466 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:50:28,092 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:50:28,511 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:50:29,710 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:50:30,332 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:50:30,804 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:50:32,028 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:50:32,631 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:50:33,059 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:50:35,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:50:35,520 INFO L93 Difference]: Finished difference Result 21110 states and 35622 transitions. [2020-10-29 12:50:35,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:50:35,522 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 257 [2020-10-29 12:50:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:50:35,596 INFO L225 Difference]: With dead ends: 21110 [2020-10-29 12:50:35,596 INFO L226 Difference]: Without dead ends: 16154 [2020-10-29 12:50:35,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:50:35,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16154 states. [2020-10-29 12:50:38,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16154 to 14696. [2020-10-29 12:50:38,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14696 states. [2020-10-29 12:50:38,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14696 states to 14696 states and 24666 transitions. [2020-10-29 12:50:38,437 INFO L78 Accepts]: Start accepts. Automaton has 14696 states and 24666 transitions. Word has length 257 [2020-10-29 12:50:38,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:50:38,437 INFO L481 AbstractCegarLoop]: Abstraction has 14696 states and 24666 transitions. [2020-10-29 12:50:38,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:50:38,438 INFO L276 IsEmpty]: Start isEmpty. Operand 14696 states and 24666 transitions. [2020-10-29 12:50:38,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-29 12:50:38,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:50:38,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:50:38,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:50:38,479 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:50:38,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:50:38,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1075410823, now seen corresponding path program 1 times [2020-10-29 12:50:38,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:50:38,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961845232] [2020-10-29 12:50:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:50:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:38,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:38,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:38,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:40,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:40,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:41,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:42,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:43,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:43,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-29 12:50:43,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:50:43,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:50:43,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:43,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:43,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:50:43,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:50:43,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-29 12:50:43,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:44,840 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:50:44,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:50:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:44,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:44,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:44,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:50:44,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:44,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:50:44,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:44,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:50:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:50:44,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:50:44,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:44,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:50:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:45,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:45,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 12:50:45,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-29 12:50:45,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:45,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:50:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:50:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:50:45,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:45,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 12:50:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:45,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:45,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:45,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:50:45,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:45,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:50:45,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:45,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:45,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:50:45,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:50:45,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:50:45,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:45,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 12:50:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:45,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:45,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:45,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:50:45,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:45,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:50:45,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:45,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:45,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:50:45,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:50:45,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:50:45,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:45,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-29 12:50:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:45,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:45,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:45,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:50:45,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:50:45,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:45,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:50:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:50:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:50:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:45,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-29 12:50:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:45,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:45,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:45,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:50:45,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:45,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:50:45,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:45,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:50:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:50:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:50:45,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:45,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-29 12:50:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:45,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:45,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:45,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:50:45,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:50:45,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:45,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:50:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:50:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:50:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:45,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-10-29 12:50:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:45,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:45,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:45,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:50:45,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:45,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:50:45,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:45,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:45,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:50:45,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:50:45,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:50:45,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:45,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-29 12:50:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:50:45,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:50:45,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:50:45,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:50:45,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:50:45,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:50:45,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:50:45,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:50:45,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:50:45,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:50:45,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:50:45,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:50:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:50:45,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961845232] [2020-10-29 12:50:45,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:50:45,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:50:45,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511547350] [2020-10-29 12:50:45,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:50:45,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:50:45,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:50:45,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:50:45,932 INFO L87 Difference]: Start difference. First operand 14696 states and 24666 transitions. Second operand 11 states. [2020-10-29 12:50:47,284 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-29 12:50:48,510 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-29 12:50:50,321 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 414