/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=DEEPEST --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-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:35:20,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:35:20,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:35:20,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:35:20,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:35:20,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:35:20,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:35:20,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:35:20,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:35:20,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:35:20,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:35:20,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:35:20,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:35:20,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:35:20,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:35:20,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:35:20,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:35:20,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:35:20,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:35:20,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:35:20,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:35:20,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:35:20,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:35:20,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:35:20,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:35:20,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:35:20,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:35:20,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:35:20,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:35:20,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:35:20,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:35:20,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:35:20,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:35:20,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:35:20,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:35:20,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:35:20,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:35:20,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:35:20,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:35:20,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:35:20,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:35:20,292 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:35:20,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:35:20,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:35:20,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:35:20,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:35:20,347 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:35:20,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:35:20,348 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:35:20,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:35:20,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:35:20,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:35:20,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:35:20,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:35:20,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:35:20,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:35:20,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:35:20,351 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:35:20,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:35:20,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:35:20,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:35:20,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:35:20,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:35:20,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:35:20,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:35:20,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:35:20,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:35:20,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:35:20,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:35:20,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:35:20,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:35:20,354 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:35:20,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:35:20,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:35:20,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:35:20,835 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:35:20,836 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:35:20,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-28 00:35:20,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9b402d69/dc6fac9991134835bf05a5f633a6330c/FLAGe2d23283b [2020-10-28 00:35:21,920 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:35:21,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-28 00:35:21,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9b402d69/dc6fac9991134835bf05a5f633a6330c/FLAGe2d23283b [2020-10-28 00:35:21,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9b402d69/dc6fac9991134835bf05a5f633a6330c [2020-10-28 00:35:22,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:35:22,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:35:22,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:35:22,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:35:22,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:35:22,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:35:21" (1/1) ... [2020-10-28 00:35:22,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10bf1adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:35:22, skipping insertion in model container [2020-10-28 00:35:22,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:35:21" (1/1) ... [2020-10-28 00:35:22,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:35:22,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:35:23,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:35:23,533 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:35:24,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:35:24,354 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:35:24,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:35:24 WrapperNode [2020-10-28 00:35:24,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:35:24,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:35:24,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:35:24,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:35:24,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:35:24" (1/1) ... [2020-10-28 00:35:24,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:35:24" (1/1) ... [2020-10-28 00:35:24,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:35:24" (1/1) ... [2020-10-28 00:35:24,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:35:24" (1/1) ... [2020-10-28 00:35:24,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:35:24" (1/1) ... [2020-10-28 00:35:24,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:35:24" (1/1) ... [2020-10-28 00:35:24,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:35:24" (1/1) ... [2020-10-28 00:35:24,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:35:24,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:35:24,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:35:24,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:35:24,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:35:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:35:24,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:35:24,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:35:24,674 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:35:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:35:24,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:35:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:35:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:35:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:35:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:35:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:35:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:35:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:35:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:35:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:35:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:35:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:35:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:35:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:35:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:35:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:35:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:35:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:35:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:35:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:35:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:35:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:35:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:35:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:35:28,500 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:35:28,500 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:35:28,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:35:28 BoogieIcfgContainer [2020-10-28 00:35:28,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:35:28,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:35:28,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:35:28,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:35:28,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:35:21" (1/3) ... [2020-10-28 00:35:28,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3151928e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:35:28, skipping insertion in model container [2020-10-28 00:35:28,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:35:24" (2/3) ... [2020-10-28 00:35:28,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3151928e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:35:28, skipping insertion in model container [2020-10-28 00:35:28,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:35:28" (3/3) ... [2020-10-28 00:35:28,514 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-28 00:35:28,528 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:35:28,535 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:35:28,550 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:35:28,585 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:35:28,585 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:35:28,586 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:35:28,586 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:35:28,586 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:35:28,586 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:35:28,586 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:35:28,586 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:35:28,625 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states. [2020-10-28 00:35:28,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-28 00:35:28,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:28,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:28,666 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:28,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:28,673 INFO L82 PathProgramCache]: Analyzing trace with hash 244462510, now seen corresponding path program 1 times [2020-10-28 00:35:28,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:28,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740748007] [2020-10-28 00:35:28,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:29,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:31,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:31,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:31,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:32,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:32,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:32,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:32,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:33,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:33,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:33,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:34,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:34,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-28 00:35:34,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:35:34,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-28 00:35:34,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:34,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:34,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 00:35:34,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-28 00:35:34,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:35:35,644 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:35:35,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:35,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:35,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:35,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:35,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:35,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 00:35:35,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:35,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:35,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:35,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740748007] [2020-10-28 00:35:35,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:35,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:35,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430171850] [2020-10-28 00:35:35,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:35,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:35,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:35,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:35,992 INFO L87 Difference]: Start difference. First operand 977 states. Second operand 4 states. [2020-10-28 00:35:37,039 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2020-10-28 00:35:45,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:45,041 INFO L93 Difference]: Finished difference Result 1690 states and 3016 transitions. [2020-10-28 00:35:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:45,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 315 [2020-10-28 00:35:45,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:45,111 INFO L225 Difference]: With dead ends: 1690 [2020-10-28 00:35:45,111 INFO L226 Difference]: Without dead ends: 1387 [2020-10-28 00:35:45,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-10-28 00:35:45,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1384. [2020-10-28 00:35:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2020-10-28 00:35:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2143 transitions. [2020-10-28 00:35:45,315 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2143 transitions. Word has length 315 [2020-10-28 00:35:45,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:45,319 INFO L481 AbstractCegarLoop]: Abstraction has 1384 states and 2143 transitions. [2020-10-28 00:35:45,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:45,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2143 transitions. [2020-10-28 00:35:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-28 00:35:45,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:45,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:45,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:35:45,336 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:45,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:45,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1127180094, now seen corresponding path program 1 times [2020-10-28 00:35:45,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:45,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042086994] [2020-10-28 00:35:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:45,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:45,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:46,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:47,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:47,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:47,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:47,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:47,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:47,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:47,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:49,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:50,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:50,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-28 00:35:50,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:35:50,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 00:35:50,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:50,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:50,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-28 00:35:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 228 [2020-10-28 00:35:50,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:51,333 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:35:51,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:51,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:51,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:51,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:51,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:51,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 00:35:51,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:51,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:51,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042086994] [2020-10-28 00:35:51,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:51,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:51,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164424814] [2020-10-28 00:35:51,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:51,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:51,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:51,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:51,669 INFO L87 Difference]: Start difference. First operand 1384 states and 2143 transitions. Second operand 4 states. [2020-10-28 00:35:52,405 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 359 [2020-10-28 00:35:59,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:59,357 INFO L93 Difference]: Finished difference Result 2675 states and 4185 transitions. [2020-10-28 00:35:59,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:59,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 315 [2020-10-28 00:35:59,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:59,371 INFO L225 Difference]: With dead ends: 2675 [2020-10-28 00:35:59,371 INFO L226 Difference]: Without dead ends: 2323 [2020-10-28 00:35:59,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:59,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2020-10-28 00:35:59,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 2320. [2020-10-28 00:35:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2020-10-28 00:35:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3607 transitions. [2020-10-28 00:35:59,497 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3607 transitions. Word has length 315 [2020-10-28 00:35:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:59,498 INFO L481 AbstractCegarLoop]: Abstraction has 2320 states and 3607 transitions. [2020-10-28 00:35:59,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:59,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3607 transitions. [2020-10-28 00:35:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-28 00:35:59,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:59,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:59,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:35:59,507 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:59,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:59,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1137677159, now seen corresponding path program 1 times [2020-10-28 00:35:59,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:59,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731531453] [2020-10-28 00:35:59,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:59,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:00,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:00,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:00,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:01,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:01,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:01,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:01,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:01,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:01,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:02,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:02,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:03,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:04,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:04,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-28 00:36:04,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:36:04,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 00:36:04,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:36:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:36:04,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 00:36:04,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:05,541 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:36:05,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:05,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:05,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:05,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:05,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 00:36:05,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:05,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:36:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:05,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731531453] [2020-10-28 00:36:05,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:05,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:36:05,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324419916] [2020-10-28 00:36:05,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:36:05,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:05,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:36:05,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:05,868 INFO L87 Difference]: Start difference. First operand 2320 states and 3607 transitions. Second operand 5 states. [2020-10-28 00:36:13,700 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-28 00:36:16,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:16,187 INFO L93 Difference]: Finished difference Result 6852 states and 10636 transitions. [2020-10-28 00:36:16,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:36:16,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-28 00:36:16,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:16,215 INFO L225 Difference]: With dead ends: 6852 [2020-10-28 00:36:16,215 INFO L226 Difference]: Without dead ends: 4549 [2020-10-28 00:36:16,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:36:16,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2020-10-28 00:36:16,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 4448. [2020-10-28 00:36:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4448 states. [2020-10-28 00:36:16,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 6879 transitions. [2020-10-28 00:36:16,390 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 6879 transitions. Word has length 315 [2020-10-28 00:36:16,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:16,391 INFO L481 AbstractCegarLoop]: Abstraction has 4448 states and 6879 transitions. [2020-10-28 00:36:16,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:36:16,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 6879 transitions. [2020-10-28 00:36:16,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-28 00:36:16,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:16,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:16,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:36:16,403 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:16,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:16,404 INFO L82 PathProgramCache]: Analyzing trace with hash 317793027, now seen corresponding path program 1 times [2020-10-28 00:36:16,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:16,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704021185] [2020-10-28 00:36:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:16,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:16,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:16,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:16,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:17,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:17,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:17,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:17,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:17,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:18,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:18,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:18,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:19,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:20,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:20,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:21,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:21,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-28 00:36:21,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:36:21,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 00:36:21,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:21,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:21,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 00:36:21,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 00:36:21,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:22,386 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:36:22,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:22,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:22,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:22,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:22,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:22,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:36:22,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:22,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:22,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704021185] [2020-10-28 00:36:22,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:22,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:22,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667197733] [2020-10-28 00:36:22,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:22,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:22,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:22,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:22,561 INFO L87 Difference]: Start difference. First operand 4448 states and 6879 transitions. Second operand 4 states. [2020-10-28 00:36:31,653 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2020-10-28 00:36:33,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:33,971 INFO L93 Difference]: Finished difference Result 13014 states and 20071 transitions. [2020-10-28 00:36:33,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:36:33,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 317 [2020-10-28 00:36:33,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:34,013 INFO L225 Difference]: With dead ends: 13014 [2020-10-28 00:36:34,013 INFO L226 Difference]: Without dead ends: 8668 [2020-10-28 00:36:34,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:34,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2020-10-28 00:36:34,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8583. [2020-10-28 00:36:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8583 states. [2020-10-28 00:36:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8583 states to 8583 states and 13188 transitions. [2020-10-28 00:36:34,362 INFO L78 Accepts]: Start accepts. Automaton has 8583 states and 13188 transitions. Word has length 317 [2020-10-28 00:36:34,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:34,362 INFO L481 AbstractCegarLoop]: Abstraction has 8583 states and 13188 transitions. [2020-10-28 00:36:34,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:34,362 INFO L276 IsEmpty]: Start isEmpty. Operand 8583 states and 13188 transitions. [2020-10-28 00:36:34,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-28 00:36:34,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:34,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:34,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:36:34,384 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:34,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:34,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1758298974, now seen corresponding path program 1 times [2020-10-28 00:36:34,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:34,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950231190] [2020-10-28 00:36:34,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:34,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:34,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:34,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:34,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:35,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:35,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:35,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:35,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:35,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:35,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:35,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:36,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:36,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:36,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:39,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:39,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-28 00:36:39,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:36:39,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 00:36:39,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 00:36:39,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 00:36:39,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:40,201 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:36:40,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:40,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:40,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:40,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:40,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:36:40,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:40,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950231190] [2020-10-28 00:36:40,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:40,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:40,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399524991] [2020-10-28 00:36:40,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:40,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:40,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:40,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:40,420 INFO L87 Difference]: Start difference. First operand 8583 states and 13188 transitions. Second operand 4 states. [2020-10-28 00:36:46,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:46,636 INFO L93 Difference]: Finished difference Result 25715 states and 39514 transitions. [2020-10-28 00:36:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:36:46,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 317 [2020-10-28 00:36:46,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:46,701 INFO L225 Difference]: With dead ends: 25715 [2020-10-28 00:36:46,701 INFO L226 Difference]: Without dead ends: 17147 [2020-10-28 00:36:46,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:46,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17147 states. [2020-10-28 00:36:47,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17147 to 8594. [2020-10-28 00:36:47,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8594 states. [2020-10-28 00:36:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8594 states to 8594 states and 13204 transitions. [2020-10-28 00:36:47,186 INFO L78 Accepts]: Start accepts. Automaton has 8594 states and 13204 transitions. Word has length 317 [2020-10-28 00:36:47,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:47,186 INFO L481 AbstractCegarLoop]: Abstraction has 8594 states and 13204 transitions. [2020-10-28 00:36:47,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 8594 states and 13204 transitions. [2020-10-28 00:36:47,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-28 00:36:47,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:47,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:47,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:36:47,205 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:47,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:47,206 INFO L82 PathProgramCache]: Analyzing trace with hash 577885967, now seen corresponding path program 1 times [2020-10-28 00:36:47,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:47,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382593863] [2020-10-28 00:36:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:47,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:47,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:47,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:47,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:48,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:48,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:48,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:48,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:48,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:48,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:48,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:48,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:49,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:49,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:52,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-28 00:36:52,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:36:52,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 00:36:52,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:36:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 00:36:52,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:36:52,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:53,094 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:36:53,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:53,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:53,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:53,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:53,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 00:36:53,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:53,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:53,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382593863] [2020-10-28 00:36:53,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:53,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:36:53,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352427197] [2020-10-28 00:36:53,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:36:53,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:53,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:36:53,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:53,303 INFO L87 Difference]: Start difference. First operand 8594 states and 13204 transitions. Second operand 5 states. [2020-10-28 00:37:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:04,678 INFO L93 Difference]: Finished difference Result 25400 states and 38945 transitions. [2020-10-28 00:37:04,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:37:04,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-28 00:37:04,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:04,719 INFO L225 Difference]: With dead ends: 25400 [2020-10-28 00:37:04,719 INFO L226 Difference]: Without dead ends: 17065 [2020-10-28 00:37:04,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:37:04,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17065 states. [2020-10-28 00:37:05,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17065 to 8768. [2020-10-28 00:37:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8768 states. [2020-10-28 00:37:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8768 states to 8768 states and 13506 transitions. [2020-10-28 00:37:05,256 INFO L78 Accepts]: Start accepts. Automaton has 8768 states and 13506 transitions. Word has length 318 [2020-10-28 00:37:05,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:05,257 INFO L481 AbstractCegarLoop]: Abstraction has 8768 states and 13506 transitions. [2020-10-28 00:37:05,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:37:05,257 INFO L276 IsEmpty]: Start isEmpty. Operand 8768 states and 13506 transitions. [2020-10-28 00:37:05,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-28 00:37:05,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:05,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:37:05,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:37:05,278 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:05,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:05,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1608816372, now seen corresponding path program 1 times [2020-10-28 00:37:05,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:05,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758021446] [2020-10-28 00:37:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:05,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:05,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:05,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:05,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:05,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:05,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:06,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:06,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:06,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:06,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:06,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:06,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:07,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:07,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:07,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:10,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:10,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-28 00:37:10,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:37:10,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 00:37:10,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:10,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:37:10,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 00:37:10,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 00:37:10,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:11,121 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:37:11,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:11,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:11,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:11,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:11,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:11,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:37:11,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:11,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:11,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758021446] [2020-10-28 00:37:11,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:11,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:37:11,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858207907] [2020-10-28 00:37:11,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:37:11,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:11,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:37:11,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:37:11,299 INFO L87 Difference]: Start difference. First operand 8768 states and 13506 transitions. Second operand 4 states. [2020-10-28 00:37:20,964 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2020-10-28 00:37:23,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:23,288 INFO L93 Difference]: Finished difference Result 24531 states and 37621 transitions. [2020-10-28 00:37:23,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:37:23,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-10-28 00:37:23,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:23,324 INFO L225 Difference]: With dead ends: 24531 [2020-10-28 00:37:23,325 INFO L226 Difference]: Without dead ends: 16122 [2020-10-28 00:37:23,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:37:23,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16122 states. [2020-10-28 00:37:24,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16122 to 16053. [2020-10-28 00:37:24,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16053 states. [2020-10-28 00:37:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16053 states to 16053 states and 24520 transitions. [2020-10-28 00:37:24,301 INFO L78 Accepts]: Start accepts. Automaton has 16053 states and 24520 transitions. Word has length 318 [2020-10-28 00:37:24,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:24,301 INFO L481 AbstractCegarLoop]: Abstraction has 16053 states and 24520 transitions. [2020-10-28 00:37:24,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:37:24,302 INFO L276 IsEmpty]: Start isEmpty. Operand 16053 states and 24520 transitions. [2020-10-28 00:37:24,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-28 00:37:24,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:24,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:37:24,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:37:24,333 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:24,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:24,333 INFO L82 PathProgramCache]: Analyzing trace with hash -953462328, now seen corresponding path program 1 times [2020-10-28 00:37:24,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:24,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621742188] [2020-10-28 00:37:24,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:24,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:24,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:24,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:24,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:24,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:25,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:25,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:25,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:25,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:25,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:25,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:25,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:25,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:25,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:25,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:29,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:29,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-28 00:37:29,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:37:29,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 00:37:29,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:37:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-28 00:37:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 00:37:29,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:30,218 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:37:30,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:30,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:30,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:30,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:30,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:30,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:37:30,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:30,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:30,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:30,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:30,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:30,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621742188] [2020-10-28 00:37:30,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:30,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:37:30,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839804021] [2020-10-28 00:37:30,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:37:30,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:30,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:37:30,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:37:30,312 INFO L87 Difference]: Start difference. First operand 16053 states and 24520 transitions. Second operand 4 states. [2020-10-28 00:37:38,570 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2020-10-28 00:37:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:38,894 INFO L93 Difference]: Finished difference Result 36700 states and 56497 transitions. [2020-10-28 00:37:38,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:37:38,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 320 [2020-10-28 00:37:38,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:38,936 INFO L225 Difference]: With dead ends: 36700 [2020-10-28 00:37:38,936 INFO L226 Difference]: Without dead ends: 22276 [2020-10-28 00:37:38,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:37:38,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22276 states. [2020-10-28 00:37:39,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22276 to 19653. [2020-10-28 00:37:39,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19653 states. [2020-10-28 00:37:39,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19653 states to 19653 states and 30456 transitions. [2020-10-28 00:37:39,825 INFO L78 Accepts]: Start accepts. Automaton has 19653 states and 30456 transitions. Word has length 320 [2020-10-28 00:37:39,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:39,825 INFO L481 AbstractCegarLoop]: Abstraction has 19653 states and 30456 transitions. [2020-10-28 00:37:39,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:37:39,825 INFO L276 IsEmpty]: Start isEmpty. Operand 19653 states and 30456 transitions. [2020-10-28 00:37:39,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-28 00:37:39,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:39,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:37:39,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:37:39,851 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:39,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:39,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1433234440, now seen corresponding path program 1 times [2020-10-28 00:37:39,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:39,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036278458] [2020-10-28 00:37:39,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:39,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:39,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:39,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:40,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:41,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:41,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:41,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:42,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:42,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:42,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:44,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:44,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-28 00:37:44,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 00:37:44,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 00:37:44,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:37:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 00:37:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 00:37:44,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:45,637 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:37:45,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:37:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:45,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:37:45,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:37:45,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:37:45,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:37:45,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:37:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:37:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:37:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:37:45,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:37:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:37:45,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036278458] [2020-10-28 00:37:45,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:37:45,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:37:45,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766313181] [2020-10-28 00:37:45,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:37:45,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:37:45,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:37:45,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:37:45,814 INFO L87 Difference]: Start difference. First operand 19653 states and 30456 transitions. Second operand 4 states. [2020-10-28 00:37:53,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:37:53,472 INFO L93 Difference]: Finished difference Result 57685 states and 89099 transitions. [2020-10-28 00:37:53,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:37:53,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 320 [2020-10-28 00:37:53,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:37:53,664 INFO L225 Difference]: With dead ends: 57685 [2020-10-28 00:37:53,665 INFO L226 Difference]: Without dead ends: 38664 [2020-10-28 00:37:53,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:37:53,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38664 states. [2020-10-28 00:37:55,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38664 to 19750. [2020-10-28 00:37:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19750 states. [2020-10-28 00:37:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19750 states to 19750 states and 30586 transitions. [2020-10-28 00:37:55,045 INFO L78 Accepts]: Start accepts. Automaton has 19750 states and 30586 transitions. Word has length 320 [2020-10-28 00:37:55,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:37:55,045 INFO L481 AbstractCegarLoop]: Abstraction has 19750 states and 30586 transitions. [2020-10-28 00:37:55,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:37:55,045 INFO L276 IsEmpty]: Start isEmpty. Operand 19750 states and 30586 transitions. [2020-10-28 00:37:55,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-28 00:37:55,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:37:55,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:37:55,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:37:55,074 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:37:55,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:37:55,074 INFO L82 PathProgramCache]: Analyzing trace with hash 594295373, now seen corresponding path program 1 times [2020-10-28 00:37:55,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:37:55,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781801447] [2020-10-28 00:37:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:37:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:37:55,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:55,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:55,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:56,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:56,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:56,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:56,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:56,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:56,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:56,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:56,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:57,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:57,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:57,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:59,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:59,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:37:59,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:00,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:00,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-28 00:38:00,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 00:38:00,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 00:38:00,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:38:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 00:38:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 00:38:00,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:00,947 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:38:00,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:00,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:00,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:00,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:00,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:38:00,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:00,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:01,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781801447] [2020-10-28 00:38:01,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:01,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:38:01,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723996497] [2020-10-28 00:38:01,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:38:01,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:01,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:38:01,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:01,074 INFO L87 Difference]: Start difference. First operand 19750 states and 30586 transitions. Second operand 5 states. [2020-10-28 00:38:08,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:08,238 INFO L93 Difference]: Finished difference Result 37398 states and 57767 transitions. [2020-10-28 00:38:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:38:08,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-28 00:38:08,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:08,263 INFO L225 Difference]: With dead ends: 37398 [2020-10-28 00:38:08,264 INFO L226 Difference]: Without dead ends: 18486 [2020-10-28 00:38:08,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:38:08,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18486 states. [2020-10-28 00:38:09,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18486 to 18430. [2020-10-28 00:38:09,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18430 states. [2020-10-28 00:38:09,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18430 states to 18430 states and 28527 transitions. [2020-10-28 00:38:09,465 INFO L78 Accepts]: Start accepts. Automaton has 18430 states and 28527 transitions. Word has length 321 [2020-10-28 00:38:09,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:38:09,465 INFO L481 AbstractCegarLoop]: Abstraction has 18430 states and 28527 transitions. [2020-10-28 00:38:09,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:38:09,465 INFO L276 IsEmpty]: Start isEmpty. Operand 18430 states and 28527 transitions. [2020-10-28 00:38:09,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-28 00:38:09,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:38:09,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:38:09,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:38:09,479 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:38:09,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:38:09,480 INFO L82 PathProgramCache]: Analyzing trace with hash -833750535, now seen corresponding path program 1 times [2020-10-28 00:38:09,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:38:09,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062789007] [2020-10-28 00:38:09,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:38:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:09,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:09,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:10,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:11,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:11,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:11,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:14,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:14,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-28 00:38:14,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:38:14,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 00:38:14,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:14,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:38:14,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:38:14,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 00:38:14,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:15,360 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:38:15,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:15,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:15,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:15,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:15,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:15,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:38:15,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:15,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:15,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:15,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:15,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:15,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062789007] [2020-10-28 00:38:15,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:15,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:38:15,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023784668] [2020-10-28 00:38:15,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:38:15,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:15,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:38:15,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:15,524 INFO L87 Difference]: Start difference. First operand 18430 states and 28527 transitions. Second operand 5 states. [2020-10-28 00:38:25,115 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-28 00:38:28,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:28,463 INFO L93 Difference]: Finished difference Result 54573 states and 84393 transitions. [2020-10-28 00:38:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:38:28,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-28 00:38:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:28,512 INFO L225 Difference]: With dead ends: 54573 [2020-10-28 00:38:28,512 INFO L226 Difference]: Without dead ends: 36224 [2020-10-28 00:38:28,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:38:28,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36224 states. [2020-10-28 00:38:30,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36224 to 35841. [2020-10-28 00:38:30,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35841 states. [2020-10-28 00:38:30,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35841 states to 35841 states and 55137 transitions. [2020-10-28 00:38:30,457 INFO L78 Accepts]: Start accepts. Automaton has 35841 states and 55137 transitions. Word has length 323 [2020-10-28 00:38:30,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:38:30,457 INFO L481 AbstractCegarLoop]: Abstraction has 35841 states and 55137 transitions. [2020-10-28 00:38:30,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:38:30,457 INFO L276 IsEmpty]: Start isEmpty. Operand 35841 states and 55137 transitions. [2020-10-28 00:38:30,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 00:38:30,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:38:30,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:38:30,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:38:30,478 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:38:30,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:38:30,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1427042880, now seen corresponding path program 1 times [2020-10-28 00:38:30,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:38:30,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335214528] [2020-10-28 00:38:30,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:38:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:30,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:30,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:31,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:31,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:31,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:31,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:31,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:31,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:31,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:31,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:31,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:32,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:32,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:32,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:35,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:35,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 00:38:35,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:38:35,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 00:38:35,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:38:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 00:38:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 00:38:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:36,293 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-28 00:38:36,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:38:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:36,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:36,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:38:36,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:38:36,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:38:36,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:38:36,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:38:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:38:36,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:38:36,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:38:36,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:38:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:38:36,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335214528] [2020-10-28 00:38:36,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:38:36,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:38:36,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495291881] [2020-10-28 00:38:36,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:38:36,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:38:36,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:38:36,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:38:36,445 INFO L87 Difference]: Start difference. First operand 35841 states and 55137 transitions. Second operand 4 states. [2020-10-28 00:38:47,593 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 363 [2020-10-28 00:38:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:38:51,422 INFO L93 Difference]: Finished difference Result 105019 states and 161110 transitions. [2020-10-28 00:38:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:38:51,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 325 [2020-10-28 00:38:51,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:38:51,491 INFO L225 Difference]: With dead ends: 105019 [2020-10-28 00:38:51,491 INFO L226 Difference]: Without dead ends: 70139 [2020-10-28 00:38:51,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:38:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70139 states. [2020-10-28 00:38:55,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70139 to 69784. [2020-10-28 00:38:55,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69784 states. [2020-10-28 00:38:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69784 states to 69784 states and 106583 transitions. [2020-10-28 00:38:55,425 INFO L78 Accepts]: Start accepts. Automaton has 69784 states and 106583 transitions. Word has length 325 [2020-10-28 00:38:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:38:55,426 INFO L481 AbstractCegarLoop]: Abstraction has 69784 states and 106583 transitions. [2020-10-28 00:38:55,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:38:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 69784 states and 106583 transitions. [2020-10-28 00:38:55,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-28 00:38:55,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:38:55,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:38:55,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:38:55,634 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:38:55,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:38:55,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1203839781, now seen corresponding path program 1 times [2020-10-28 00:38:55,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:38:55,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664241386] [2020-10-28 00:38:55,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:38:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:38:55,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:55,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:55,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:55,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:56,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:56,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:56,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:56,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:56,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:56,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:56,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:56,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:56,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:38:57,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking...