/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_floodmax.5.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:26:08,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:26:08,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:26:08,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:26:08,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:26:08,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:26:08,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:26:08,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:26:08,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:26:08,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:26:08,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:26:08,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:26:08,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:26:08,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:26:08,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:26:08,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:26:08,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:26:08,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:26:08,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:26:08,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:26:08,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:26:08,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:26:08,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:26:08,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:26:08,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:26:08,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:26:08,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:26:08,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:26:08,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:26:08,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:26:08,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:26:08,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:26:08,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:26:08,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:26:08,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:26:08,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:26:08,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:26:08,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:26:08,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:26:08,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:26:08,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:26:08,541 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 12:26:08,590 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:26:08,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:26:08,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:26:08,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:26:08,595 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:26:08,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:26:08,595 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:26:08,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:26:08,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:26:08,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:26:08,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:26:08,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:26:08,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:26:08,598 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:26:08,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:26:08,598 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:26:08,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:26:08,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:26:08,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:26:08,599 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:26:08,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:26:08,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:26:08,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:26:08,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:26:08,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:26:08,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:26:08,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:26:08,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:26:08,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:26:08,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:26:08,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:26:09,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:26:09,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:26:09,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:26:09,043 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:26:09,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.ufo.BOUNDED-10.pals.c [2020-10-29 12:26:09,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62c62328e/3ceeccafba344f7eb21f1b66e52002f8/FLAG940b179d4 [2020-10-29 12:26:09,889 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:26:09,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5.ufo.BOUNDED-10.pals.c [2020-10-29 12:26:09,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62c62328e/3ceeccafba344f7eb21f1b66e52002f8/FLAG940b179d4 [2020-10-29 12:26:10,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62c62328e/3ceeccafba344f7eb21f1b66e52002f8 [2020-10-29 12:26:10,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:26:10,086 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:26:10,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:26:10,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:26:10,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:26:10,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:26:10" (1/1) ... [2020-10-29 12:26:10,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf355ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:10, skipping insertion in model container [2020-10-29 12:26:10,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:26:10" (1/1) ... [2020-10-29 12:26:10,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:26:10,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:26:10,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:26:10,694 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:26:10,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:26:10,912 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:26:10,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:10 WrapperNode [2020-10-29 12:26:10,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:26:10,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:26:10,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:26:10,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:26:10,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:10" (1/1) ... [2020-10-29 12:26:10,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:10" (1/1) ... [2020-10-29 12:26:10,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:10" (1/1) ... [2020-10-29 12:26:10,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:10" (1/1) ... [2020-10-29 12:26:11,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:10" (1/1) ... [2020-10-29 12:26:11,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:10" (1/1) ... [2020-10-29 12:26:11,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:10" (1/1) ... [2020-10-29 12:26:11,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:26:11,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:26:11,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:26:11,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:26:11,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:10" (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 12:26:11,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:26:11,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:26:11,180 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:26:11,181 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:26:11,181 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:26:11,182 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:26:11,182 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:26:11,182 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-29 12:26:11,182 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-29 12:26:11,182 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:26:11,183 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:26:11,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:26:11,184 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:26:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:26:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:26:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:26:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:26:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:26:11,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:26:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:26:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:26:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:26:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:26:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:26:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:26:11,186 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:26:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 12:26:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 12:26:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:26:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:26:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:26:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:26:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:26:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:26:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:26:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:26:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:26:13,276 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:26:13,277 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:26:13,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:26:13 BoogieIcfgContainer [2020-10-29 12:26:13,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:26:13,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:26:13,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:26:13,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:26:13,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:26:10" (1/3) ... [2020-10-29 12:26:13,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cc72a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:26:13, skipping insertion in model container [2020-10-29 12:26:13,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:10" (2/3) ... [2020-10-29 12:26:13,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cc72a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:26:13, skipping insertion in model container [2020-10-29 12:26:13,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:26:13" (3/3) ... [2020-10-29 12:26:13,289 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.ufo.BOUNDED-10.pals.c [2020-10-29 12:26:13,300 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:26:13,305 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:26:13,317 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:26:13,349 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:26:13,349 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:26:13,349 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:26:13,350 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:26:13,350 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:26:13,350 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:26:13,350 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:26:13,350 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:26:13,381 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states. [2020-10-29 12:26:13,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-29 12:26:13,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:26:13,415 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] [2020-10-29 12:26:13,416 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:26:13,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:26:13,422 INFO L82 PathProgramCache]: Analyzing trace with hash -966148239, now seen corresponding path program 1 times [2020-10-29 12:26:13,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:26:13,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797195238] [2020-10-29 12:26:13,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:26:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:14,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:15,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:15,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-29 12:26:15,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:15,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1156 [2020-10-29 12:26:15,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:15,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:15,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-29 12:26:15,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:15,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:26:16,209 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:26:16,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:26:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:16,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:16,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:16,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:26:16,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:16,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 12:26:16,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:16,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:16,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:16,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:16,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:16,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:26:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:16,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:16,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:16,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 12:26:16,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:16,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 12:26:16,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:16,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:16,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:16,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:16,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:16,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:16,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 12:26:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:16,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:16,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:16,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:26:16,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:16,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:26:16,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:16,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:16,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:16,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:26:16,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:16,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:26:16,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 12:26:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:16,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:16,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:16,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:16,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:26:16,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:16,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:16,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:16,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:16,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:16,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:26:16,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-29 12:26:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:16,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:16,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:16,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:16,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:16,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:26:16,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:16,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:16,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:16,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:16,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:16,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:16,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-29 12:26:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:16,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:16,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:16,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:16,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:16,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:26:16,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:16,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:16,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:16,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:16,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-29 12:26:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:16,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:16,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:16,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:16,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:26:16,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:16,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:16,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:16,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-29 12:26:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:16,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:16,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:16,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:16,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:16,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:26:16,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:16,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:16,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:16,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-29 12:26:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:17,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:17,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:17,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:17,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:17,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:26:17,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:17,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:17,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:17,121 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 12:26:17,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797195238] [2020-10-29 12:26:17,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:26:17,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 12:26:17,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158680866] [2020-10-29 12:26:17,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:26:17,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:26:17,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:26:17,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:26:17,150 INFO L87 Difference]: Start difference. First operand 742 states. Second operand 8 states. [2020-10-29 12:26:20,274 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:20,941 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:21,618 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:22,183 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:22,755 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:23,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:26:23,531 INFO L93 Difference]: Finished difference Result 976 states and 1721 transitions. [2020-10-29 12:26:23,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:26:23,534 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-10-29 12:26:23,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:26:23,558 INFO L225 Difference]: With dead ends: 976 [2020-10-29 12:26:23,558 INFO L226 Difference]: Without dead ends: 784 [2020-10-29 12:26:23,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:26:23,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-10-29 12:26:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 734. [2020-10-29 12:26:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-29 12:26:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1328 transitions. [2020-10-29 12:26:23,783 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1328 transitions. Word has length 183 [2020-10-29 12:26:23,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:26:23,784 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 1328 transitions. [2020-10-29 12:26:23,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:26:23,784 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1328 transitions. [2020-10-29 12:26:23,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-29 12:26:23,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:26:23,792 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] [2020-10-29 12:26:23,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:26:23,792 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:26:23,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:26:23,793 INFO L82 PathProgramCache]: Analyzing trace with hash 973013807, now seen corresponding path program 1 times [2020-10-29 12:26:23,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:26:23,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366488363] [2020-10-29 12:26:23,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:26:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:23,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:27,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:27,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-29 12:26:27,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:27,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3318 [2020-10-29 12:26:27,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:27,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:27,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:26:27,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 12:26:27,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:26:27,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:28,542 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:26:28,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:26:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:28,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:28,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:28,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:26:28,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:28,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 12:26:28,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:28,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:28,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:28,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:28,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:28,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:28,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:26:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:28,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:29,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:29,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 12:26:29,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:29,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-10-29 12:26:29,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:29,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:29,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:26:29,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:29,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 12:26:29,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:29,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 12:26:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:29,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:29,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:29,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:26:29,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:29,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:26:29,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:29,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:26:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:26:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:26:29,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:26:29,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 12:26:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:29,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:29,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:29,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:29,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:29,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:26:29,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:29,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:29,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:29,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:29,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-29 12:26:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:29,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:29,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:29,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:29,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:29,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:26:29,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:29,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:29,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:29,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-29 12:26:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:29,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:29,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:29,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:29,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:29,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:26:29,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:29,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:29,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:29,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:29,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:29,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:29,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-29 12:26:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:29,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:29,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:29,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:29,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:29,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:26:29,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:29,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:29,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:29,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:29,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:29,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:29,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-29 12:26:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:29,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:29,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:29,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:29,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:26:29,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:29,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:29,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:29,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:29,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:29,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:29,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-29 12:26:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:29,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:29,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:29,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:29,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:29,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:26:29,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:29,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:29,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:29,883 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 12:26:29,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366488363] [2020-10-29 12:26:29,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:26:29,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:26:29,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712516330] [2020-10-29 12:26:29,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:26:29,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:26:29,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:26:29,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:26:29,889 INFO L87 Difference]: Start difference. First operand 734 states and 1328 transitions. Second operand 14 states. [2020-10-29 12:26:39,289 WARN L193 SmtUtils]: Spent 956.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-29 12:26:40,380 WARN L193 SmtUtils]: Spent 998.00 ms on a formula simplification that was a NOOP. DAG size: 390 [2020-10-29 12:26:41,601 WARN L193 SmtUtils]: Spent 980.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-29 12:26:42,632 WARN L193 SmtUtils]: Spent 983.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:26:43,968 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:44,714 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:45,603 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:46,412 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:47,253 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:48,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:26:48,684 INFO L93 Difference]: Finished difference Result 977 states and 1723 transitions. [2020-10-29 12:26:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:26:48,684 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 183 [2020-10-29 12:26:48,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:26:48,692 INFO L225 Difference]: With dead ends: 977 [2020-10-29 12:26:48,692 INFO L226 Difference]: Without dead ends: 795 [2020-10-29 12:26:48,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:26:48,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2020-10-29 12:26:48,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 734. [2020-10-29 12:26:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-29 12:26:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1268 transitions. [2020-10-29 12:26:48,865 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1268 transitions. Word has length 183 [2020-10-29 12:26:48,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:26:48,866 INFO L481 AbstractCegarLoop]: Abstraction has 734 states and 1268 transitions. [2020-10-29 12:26:48,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:26:48,866 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1268 transitions. [2020-10-29 12:26:48,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-29 12:26:48,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:26:48,875 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] [2020-10-29 12:26:48,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:26:48,875 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:26:48,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:26:48,876 INFO L82 PathProgramCache]: Analyzing trace with hash -929784361, now seen corresponding path program 1 times [2020-10-29 12:26:48,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:26:48,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698699988] [2020-10-29 12:26:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:26:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:49,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:49,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:50,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:54,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:54,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-29 12:26:54,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:26:54,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-29 12:26:54,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:54,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:26:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-29 12:26:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 12:26:54,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:55,179 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:26:55,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:26:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:55,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:55,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:55,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:26:55,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:55,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 12:26:55,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:55,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:55,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:55,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:55,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:55,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:55,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:26:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:55,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:55,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:55,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 12:26:55,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:55,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-29 12:26:55,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:55,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:55,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:55,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:55,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 12:26:55,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:55,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-29 12:26:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:55,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:55,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:55,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:26:55,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:55,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:26:55,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:55,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:55,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:26:55,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:55,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:26:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:55,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:55,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:55,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:55,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:55,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:26:55,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:55,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:26:55,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:55,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:26:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:55,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:55,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:55,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:55,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:55,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:26:55,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:55,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:55,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:26:55,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:26:55,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:26:55,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:55,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:26:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:55,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:55,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:55,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:55,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:55,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:26:55,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:55,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:55,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:55,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:55,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:55,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:55,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-29 12:26:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:55,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:55,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:55,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:55,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:55,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:26:55,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:55,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:55,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:55,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:56,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-29 12:26:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:56,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:56,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:56,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:56,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:56,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:26:56,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:56,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:56,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:56,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:56,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:56,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:56,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-29 12:26:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:56,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:56,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:56,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:56,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:56,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:26:56,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:56,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:56,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:56,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:56,319 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 12:26:56,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698699988] [2020-10-29 12:26:56,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:26:56,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:26:56,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776359020] [2020-10-29 12:26:56,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:26:56,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:26:56,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:26:56,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:26:56,324 INFO L87 Difference]: Start difference. First operand 734 states and 1268 transitions. Second operand 11 states. [2020-10-29 12:26:57,352 WARN L193 SmtUtils]: Spent 918.00 ms on a formula simplification that was a NOOP. DAG size: 387 [2020-10-29 12:27:03,941 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 12:27:04,550 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:05,052 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:05,645 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:05,919 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 12:27:06,870 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:07,204 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 12:27:08,259 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:08,598 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-29 12:27:10,583 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:11,853 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification that was a NOOP. DAG size: 387 [2020-10-29 12:27:12,136 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:12,417 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 12:27:12,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:27:12,528 INFO L93 Difference]: Finished difference Result 1180 states and 1994 transitions. [2020-10-29 12:27:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:27:12,528 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 242 [2020-10-29 12:27:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:27:12,536 INFO L225 Difference]: With dead ends: 1180 [2020-10-29 12:27:12,536 INFO L226 Difference]: Without dead ends: 1004 [2020-10-29 12:27:12,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:27:12,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-10-29 12:27:12,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 898. [2020-10-29 12:27:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 898 states. [2020-10-29 12:27:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1537 transitions. [2020-10-29 12:27:12,714 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1537 transitions. Word has length 242 [2020-10-29 12:27:12,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:27:12,716 INFO L481 AbstractCegarLoop]: Abstraction has 898 states and 1537 transitions. [2020-10-29 12:27:12,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:27:12,717 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1537 transitions. [2020-10-29 12:27:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-29 12:27:12,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:27:12,722 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] [2020-10-29 12:27:12,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:27:12,723 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:27:12,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:27:12,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1648930366, now seen corresponding path program 1 times [2020-10-29 12:27:12,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:27:12,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578889368] [2020-10-29 12:27:12,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:27:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:12,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:13,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:13,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:14,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:14,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:15,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:16,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:16,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:17,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:17,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-29 12:27:17,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:27:17,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 12:27:17,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:17,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:17,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:27:17,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:27:17,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-29 12:27:17,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:19,027 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:27:19,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:27:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:19,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:19,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:19,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:27:19,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:19,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:27:19,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:19,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:19,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:19,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:19,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:19,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:27:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:19,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:19,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:19,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 12:27:19,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:19,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-29 12:27:19,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:19,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:27:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:27:19,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:19,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-29 12:27:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:19,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:19,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:19,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:27:19,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:19,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:27:19,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:19,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:19,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:27:19,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:20,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:27:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:20,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:20,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:20,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:20,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:20,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:27:20,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:20,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:27:20,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:20,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:27:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:20,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:20,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:20,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:27:20,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:20,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:27:20,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:20,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:20,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:20,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:27:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:27:20,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:20,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-29 12:27:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:20,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:20,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:20,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:20,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:20,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:27:20,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:20,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:20,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:20,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:27:20,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:20,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:20,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 12:27:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:20,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:20,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:20,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:20,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:20,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:27:20,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:20,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:27:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:20,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:20,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 12:27:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:20,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:20,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:20,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:20,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:27:20,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:20,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:20,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:20,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:27:20,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:20,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:20,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-29 12:27:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:20,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:20,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:20,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:20,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:20,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:27:20,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:20,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:27:20,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:20,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:20,601 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 12:27:20,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578889368] [2020-10-29 12:27:20,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:27:20,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:27:20,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695501984] [2020-10-29 12:27:20,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:27:20,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:27:20,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:27:20,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:27:20,604 INFO L87 Difference]: Start difference. First operand 898 states and 1537 transitions. Second operand 11 states. [2020-10-29 12:27:21,632 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:27:22,718 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 396 [2020-10-29 12:27:24,965 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 398 DAG size of output: 396 [2020-10-29 12:27:26,099 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 12:27:45,504 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:27:46,067 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:46,497 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:47,262 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:47,595 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:48,217 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:48,858 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:50,032 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:50,633 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:50,919 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:51,767 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:52,509 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:52,834 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:53,729 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:54,498 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:54,801 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:56,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:27:56,862 INFO L93 Difference]: Finished difference Result 3526 states and 6034 transitions. [2020-10-29 12:27:56,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:27:56,869 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-10-29 12:27:56,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:27:56,884 INFO L225 Difference]: With dead ends: 3526 [2020-10-29 12:27:56,884 INFO L226 Difference]: Without dead ends: 2702 [2020-10-29 12:27:56,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:27:56,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2020-10-29 12:27:57,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2471. [2020-10-29 12:27:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2471 states. [2020-10-29 12:27:57,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 4231 transitions. [2020-10-29 12:27:57,397 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 4231 transitions. Word has length 246 [2020-10-29 12:27:57,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:27:57,397 INFO L481 AbstractCegarLoop]: Abstraction has 2471 states and 4231 transitions. [2020-10-29 12:27:57,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:27:57,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 4231 transitions. [2020-10-29 12:27:57,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-29 12:27:57,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:27:57,406 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] [2020-10-29 12:27:57,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:27:57,406 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:27:57,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:27:57,407 INFO L82 PathProgramCache]: Analyzing trace with hash -149768005, now seen corresponding path program 1 times [2020-10-29 12:27:57,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:27:57,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071172839] [2020-10-29 12:27:57,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:27:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:57,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:57,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:58,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:58,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:59,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:00,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:02,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:02,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-29 12:28:02,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:28:02,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 12:28:02,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:02,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:28:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:28:02,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-29 12:28:02,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:28:03,666 WARN L193 SmtUtils]: Spent 988.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:28:03,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:28:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:03,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:03,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:03,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:28:03,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:28:03,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:03,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:03,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:28:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:03,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:04,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:04,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 12:28:04,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:04,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-29 12:28:04,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:04,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:28:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:28:04,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:04,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-29 12:28:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:04,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:04,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:04,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:28:04,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:04,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:28:04,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:04,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:04,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:04,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:04,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:28:04,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:04,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:28:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:04,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:04,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:04,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:04,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:04,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:28:04,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:04,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:04,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:04,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:04,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:28:04,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:04,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:28:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:04,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:04,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:04,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:28:04,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:04,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:28:04,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:04,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:04,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:04,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:28:04,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:28:04,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:04,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-29 12:28:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:04,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:04,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:04,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:04,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:04,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:28:04,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:04,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:28:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:04,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:04,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 12:28:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:04,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:04,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:04,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:04,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:28:04,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:04,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:28:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:04,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:04,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 12:28:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:04,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:04,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:04,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:04,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:04,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:28:04,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:04,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:28:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:04,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:04,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-29 12:28:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:04,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:04,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:04,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:04,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:04,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:28:04,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:04,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:28:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:04,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:05,150 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 12:28:05,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071172839] [2020-10-29 12:28:05,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:28:05,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:28:05,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78875751] [2020-10-29 12:28:05,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:28:05,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:28:05,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:28:05,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:28:05,159 INFO L87 Difference]: Start difference. First operand 2471 states and 4231 transitions. Second operand 11 states. [2020-10-29 12:28:06,217 WARN L193 SmtUtils]: Spent 973.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:28:07,345 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 396 [2020-10-29 12:28:08,850 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 12:28:11,000 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 398 DAG size of output: 396 [2020-10-29 12:28:29,968 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:28:30,462 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:28:30,890 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:28:31,641 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:28:32,042 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:28:32,534 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:28:33,613 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:28:34,462 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:28:34,946 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:28:35,355 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:28:36,230 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:28:36,805 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:28:37,209 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:28:38,218 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:28:38,781 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:28:39,129 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:28:40,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:28:40,860 INFO L93 Difference]: Finished difference Result 9776 states and 16697 transitions. [2020-10-29 12:28:40,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:28:40,861 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-10-29 12:28:40,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:28:40,899 INFO L225 Difference]: With dead ends: 9776 [2020-10-29 12:28:40,899 INFO L226 Difference]: Without dead ends: 7417 [2020-10-29 12:28:40,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:28:40,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7417 states. [2020-10-29 12:28:42,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7417 to 6837. [2020-10-29 12:28:42,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6837 states. [2020-10-29 12:28:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6837 states to 6837 states and 11655 transitions. [2020-10-29 12:28:42,570 INFO L78 Accepts]: Start accepts. Automaton has 6837 states and 11655 transitions. Word has length 246 [2020-10-29 12:28:42,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:28:42,571 INFO L481 AbstractCegarLoop]: Abstraction has 6837 states and 11655 transitions. [2020-10-29 12:28:42,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:28:42,571 INFO L276 IsEmpty]: Start isEmpty. Operand 6837 states and 11655 transitions. [2020-10-29 12:28:42,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-29 12:28:42,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:28:42,591 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] [2020-10-29 12:28:42,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:28:42,591 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:28:42,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:28:42,592 INFO L82 PathProgramCache]: Analyzing trace with hash 2011235924, now seen corresponding path program 1 times [2020-10-29 12:28:42,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:28:42,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458252666] [2020-10-29 12:28:42,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:28:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:42,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:42,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:43,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:43,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:44,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:45,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:46,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:47,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:47,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-29 12:28:47,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:28:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 12:28:47,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:47,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:47,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:28:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:28:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-29 12:28:47,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:48,872 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:28:48,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:28:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:48,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:48,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:48,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:28:48,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:48,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:28:48,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:48,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:48,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:48,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:28:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:49,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:49,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:49,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 12:28:49,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:49,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-29 12:28:49,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:49,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:28:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 12:28:49,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:49,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-29 12:28:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:49,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:49,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:49,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:28:49,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:49,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:28:49,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:49,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:49,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:28:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:49,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:28:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:49,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:49,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:49,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:49,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:49,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:28:49,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:49,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:49,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:49,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:49,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:28:49,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:49,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:28:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:49,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:49,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:49,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:28:49,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:49,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:28:49,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:49,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:28:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:28:49,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:49,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-29 12:28:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:49,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:49,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:49,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:49,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:49,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:28:49,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:49,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:49,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:49,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:28:49,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:49,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:49,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-29 12:28:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:49,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:49,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:49,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:49,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:49,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:28:49,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:49,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:49,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:49,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:28:49,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:49,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:49,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-29 12:28:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:49,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:49,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:49,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:49,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:49,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:28:49,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:49,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:28:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:49,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:49,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-29 12:28:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:49,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:49,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:49,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:49,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:49,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:28:49,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:49,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:28:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:49,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:50,156 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 12:28:50,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458252666] [2020-10-29 12:28:50,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:28:50,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:28:50,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826035854] [2020-10-29 12:28:50,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:28:50,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:28:50,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:28:50,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:28:50,159 INFO L87 Difference]: Start difference. First operand 6837 states and 11655 transitions. Second operand 11 states. [2020-10-29 12:28:51,263 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:28:52,400 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 395 [2020-10-29 12:28:53,703 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 12:28:55,847 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 397 DAG size of output: 393 [2020-10-29 12:29:18,720 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:29:19,254 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:29:19,669 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:29:20,456 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:29:20,804 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:29:21,390 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:29:22,271 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:29:23,190 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:29:23,612 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:29:24,008 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:29:24,842 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:29:25,362 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:29:25,836 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:29:26,631 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:29:27,151 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:29:27,589 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:29:29,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:29:29,462 INFO L93 Difference]: Finished difference Result 26753 states and 45508 transitions. [2020-10-29 12:29:29,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:29:29,463 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 247 [2020-10-29 12:29:29,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:29:29,551 INFO L225 Difference]: With dead ends: 26753 [2020-10-29 12:29:29,552 INFO L226 Difference]: Without dead ends: 20409 [2020-10-29 12:29:29,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:29:29,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20409 states. [2020-10-29 12:29:32,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20409 to 19097. [2020-10-29 12:29:32,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19097 states. [2020-10-29 12:29:32,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19097 states to 19097 states and 32412 transitions. [2020-10-29 12:29:32,955 INFO L78 Accepts]: Start accepts. Automaton has 19097 states and 32412 transitions. Word has length 247 [2020-10-29 12:29:32,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:29:32,955 INFO L481 AbstractCegarLoop]: Abstraction has 19097 states and 32412 transitions. [2020-10-29 12:29:32,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:29:32,956 INFO L276 IsEmpty]: Start isEmpty. Operand 19097 states and 32412 transitions. [2020-10-29 12:29:33,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 12:29:33,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:29:33,007 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] [2020-10-29 12:29:33,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:29:33,007 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:29:33,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:29:33,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1907658214, now seen corresponding path program 1 times [2020-10-29 12:29:33,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:29:33,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373374971] [2020-10-29 12:29:33,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:29:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:33,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:33,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:34,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:34,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:35,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:35,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:38,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:38,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 12:29:38,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:29:38,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:29:38,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:38,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:29:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:29:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-29 12:29:38,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:39,177 WARN L193 SmtUtils]: Spent 985.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:29:39,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:29:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:39,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:39,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:39,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:29:39,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:39,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:29:39,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:39,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:29:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:29:39,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:39,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:29:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:39,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:39,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:39,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 12:29:39,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:39,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-29 12:29:39,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:39,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:29:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 12:29:39,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:39,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-29 12:29:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:39,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:39,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:39,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:29:39,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:39,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:29:39,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:39,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:39,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:39,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:39,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:29:39,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:39,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:29:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:39,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:39,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:39,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:29:39,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:39,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:29:39,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:39,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:39,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:29:39,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:40,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:29:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:40,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:40,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:29:40,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:40,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:29:40,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:40,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:40,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:40,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:29:40,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:29:40,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:40,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-29 12:29:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:40,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:40,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:40,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:29:40,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:40,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:29:40,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:40,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:40,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:29:40,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:29:40,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:29:40,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:40,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-29 12:29:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:40,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:40,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:40,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:29:40,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:40,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:29:40,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:40,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:29:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:29:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:29:40,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:40,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-29 12:29:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:40,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:40,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:40,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:29:40,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:40,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:29:40,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:40,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:29:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:29:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:29:40,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:40,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-29 12:29:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:40,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:40,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:40,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:29:40,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:40,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:29:40,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:40,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:40,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:29:40,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:29:40,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:29:40,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:40,473 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 12:29:40,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373374971] [2020-10-29 12:29:40,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:29:40,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:29:40,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910938747] [2020-10-29 12:29:40,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:29:40,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:29:40,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:29:40,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:29:40,476 INFO L87 Difference]: Start difference. First operand 19097 states and 32412 transitions. Second operand 11 states. [2020-10-29 12:29:41,690 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:29:42,770 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 387 [2020-10-29 12:29:44,048 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 393 [2020-10-29 12:29:45,193 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 391