/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=BIGGEST --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 -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:25:08,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:25:08,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:25:08,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:25:08,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:25:08,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:25:08,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:25:08,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:25:08,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:25:08,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:25:08,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:25:08,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:25:08,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:25:08,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:25:08,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:25:08,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:25:08,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:25:08,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:25:08,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:25:08,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:25:08,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:25:08,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:25:08,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:25:08,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:25:08,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:25:08,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:25:08,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:25:08,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:25:08,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:25:08,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:25:08,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:25:08,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:25:08,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:25:08,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:25:08,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:25:08,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:25:08,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:25:08,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:25:08,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:25:08,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:25:08,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:25:08,295 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 [2020-10-12 19:25:08,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:25:08,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:25:08,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:25:08,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:25:08,320 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:25:08,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:25:08,321 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:25:08,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:25:08,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:25:08,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:25:08,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:25:08,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:25:08,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:25:08,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:25:08,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:25:08,322 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:25:08,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:25:08,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:25:08,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:25:08,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:25:08,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:25:08,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:25:08,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:25:08,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:25:08,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:25:08,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:25:08,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:25:08,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:25:08,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:25:08,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:25:08,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:25:08,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:25:08,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:25:08,664 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:25:08,666 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:25:08,667 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-12 19:25:08,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1183559c9/fd7d98d636f3446f851132f3b6d26976/FLAGba9cbd692 [2020-10-12 19:25:09,310 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:25:09,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-12 19:25:09,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1183559c9/fd7d98d636f3446f851132f3b6d26976/FLAGba9cbd692 [2020-10-12 19:25:09,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1183559c9/fd7d98d636f3446f851132f3b6d26976 [2020-10-12 19:25:09,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:25:09,502 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:25:09,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:25:09,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:25:09,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:25:09,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:25:09" (1/1) ... [2020-10-12 19:25:09,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6b7cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:09, skipping insertion in model container [2020-10-12 19:25:09,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:25:09" (1/1) ... [2020-10-12 19:25:09,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:25:09,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:25:10,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:25:10,383 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:25:10,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:25:10,859 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:25:10,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:10 WrapperNode [2020-10-12 19:25:10,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:25:10,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:25:10,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:25:10,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:25:10,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:10" (1/1) ... [2020-10-12 19:25:10,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:10" (1/1) ... [2020-10-12 19:25:10,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:10" (1/1) ... [2020-10-12 19:25:10,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:10" (1/1) ... [2020-10-12 19:25:10,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:10" (1/1) ... [2020-10-12 19:25:10,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:10" (1/1) ... [2020-10-12 19:25:11,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:10" (1/1) ... [2020-10-12 19:25:11,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:25:11,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:25:11,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:25:11,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:25:11,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:25:11,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:25:11,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:25:11,137 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:25:11,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:25:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:25:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:25:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:25:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:25:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:25:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:25:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:25:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:25:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:25:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:25:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:25:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:25:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:25:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:25:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:25:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:25:11,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:25:11,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:25:13,488 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:25:13,488 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:25:13,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:25:13 BoogieIcfgContainer [2020-10-12 19:25:13,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:25:13,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:25:13,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:25:13,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:25:13,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:25:09" (1/3) ... [2020-10-12 19:25:13,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a3d383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:25:13, skipping insertion in model container [2020-10-12 19:25:13,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:25:10" (2/3) ... [2020-10-12 19:25:13,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a3d383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:25:13, skipping insertion in model container [2020-10-12 19:25:13,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:25:13" (3/3) ... [2020-10-12 19:25:13,515 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-12 19:25:13,526 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:25:13,538 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:25:13,552 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:25:13,590 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:25:13,590 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:25:13,590 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:25:13,590 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:25:13,590 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:25:13,590 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:25:13,590 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:25:13,590 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:25:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states. [2020-10-12 19:25:13,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-12 19:25:13,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:13,657 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] [2020-10-12 19:25:13,658 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:13,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:13,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1869622292, now seen corresponding path program 1 times [2020-10-12 19:25:13,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:13,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047407188] [2020-10-12 19:25:13,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:14,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:15,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:16,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:16,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:17,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:19,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:19,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-12 19:25:19,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:25:19,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 19:25:19,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:19,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:25:19,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 19:25:19,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 19:25:19,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:25:20,480 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-12 19:25:20,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:25:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:20,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:20,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:20,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:25:20,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:25:20,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 19:25:20,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:20,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:25:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:25:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:25:20,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:25:20,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047407188] [2020-10-12 19:25:20,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:25:20,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:25:20,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711641371] [2020-10-12 19:25:20,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:25:20,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:25:20,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:25:20,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:25:20,654 INFO L87 Difference]: Start difference. First operand 741 states. Second operand 8 states. [2020-10-12 19:25:21,430 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 377 [2020-10-12 19:25:27,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:27,626 INFO L93 Difference]: Finished difference Result 2681 states and 4647 transitions. [2020-10-12 19:25:27,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:25:27,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 208 [2020-10-12 19:25:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:27,686 INFO L225 Difference]: With dead ends: 2681 [2020-10-12 19:25:27,686 INFO L226 Difference]: Without dead ends: 2447 [2020-10-12 19:25:27,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:25:27,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2020-10-12 19:25:27,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 925. [2020-10-12 19:25:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2020-10-12 19:25:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1612 transitions. [2020-10-12 19:25:27,901 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1612 transitions. Word has length 208 [2020-10-12 19:25:27,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:27,906 INFO L479 AbstractCegarLoop]: Abstraction has 925 states and 1612 transitions. [2020-10-12 19:25:27,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:25:27,906 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1612 transitions. [2020-10-12 19:25:27,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-12 19:25:27,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:27,921 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] [2020-10-12 19:25:27,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:25:27,922 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:27,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:27,923 INFO L82 PathProgramCache]: Analyzing trace with hash 2052990191, now seen corresponding path program 1 times [2020-10-12 19:25:27,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:27,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500728555] [2020-10-12 19:25:27,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:28,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:28,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:29,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:29,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:29,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:30,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:30,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:33,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:33,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-12 19:25:33,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:25:33,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-12 19:25:33,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:25:33,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-12 19:25:33,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 19:25:33,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:25:34,290 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-12 19:25:34,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:25:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:34,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:34,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:34,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:25:34,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:25:34,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:25:34,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:25:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:25:34,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:25:34,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:34,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:25:34,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500728555] [2020-10-12 19:25:34,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:25:34,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:25:34,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431603194] [2020-10-12 19:25:34,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:25:34,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:25:34,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:25:34,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:25:34,412 INFO L87 Difference]: Start difference. First operand 925 states and 1612 transitions. Second operand 9 states. [2020-10-12 19:25:35,205 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 19:25:42,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:42,670 INFO L93 Difference]: Finished difference Result 6246 states and 10649 transitions. [2020-10-12 19:25:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:25:42,670 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 209 [2020-10-12 19:25:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:42,703 INFO L225 Difference]: With dead ends: 6246 [2020-10-12 19:25:42,703 INFO L226 Difference]: Without dead ends: 5868 [2020-10-12 19:25:42,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:25:42,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5868 states. [2020-10-12 19:25:42,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5868 to 1972. [2020-10-12 19:25:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1972 states. [2020-10-12 19:25:42,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 3393 transitions. [2020-10-12 19:25:42,946 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 3393 transitions. Word has length 209 [2020-10-12 19:25:42,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:42,950 INFO L479 AbstractCegarLoop]: Abstraction has 1972 states and 3393 transitions. [2020-10-12 19:25:42,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:25:42,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 3393 transitions. [2020-10-12 19:25:42,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-12 19:25:42,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:42,955 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] [2020-10-12 19:25:42,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:25:42,956 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:42,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:42,956 INFO L82 PathProgramCache]: Analyzing trace with hash -847981509, now seen corresponding path program 1 times [2020-10-12 19:25:42,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:42,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764205915] [2020-10-12 19:25:42,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:43,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:43,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:43,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:44,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:44,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:44,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:45,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:48,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:48,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-12 19:25:48,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:25:48,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 19:25:48,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:48,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:25:48,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 19:25:48,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 19:25:48,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:49,033 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-12 19:25:49,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:25:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:49,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:49,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:49,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:25:49,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:25:49,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 19:25:49,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:25:49,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:25:49,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:25:49,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:25:49,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764205915] [2020-10-12 19:25:49,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:25:49,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:25:49,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787408957] [2020-10-12 19:25:49,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:25:49,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:25:49,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:25:49,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:25:49,145 INFO L87 Difference]: Start difference. First operand 1972 states and 3393 transitions. Second operand 9 states. [2020-10-12 19:25:49,857 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 19:25:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:56,674 INFO L93 Difference]: Finished difference Result 17604 states and 29917 transitions. [2020-10-12 19:25:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:25:56,675 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 210 [2020-10-12 19:25:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:56,756 INFO L225 Difference]: With dead ends: 17604 [2020-10-12 19:25:56,757 INFO L226 Difference]: Without dead ends: 16326 [2020-10-12 19:25:56,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:25:56,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16326 states. [2020-10-12 19:25:57,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16326 to 5085. [2020-10-12 19:25:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5085 states. [2020-10-12 19:25:57,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5085 states to 5085 states and 8674 transitions. [2020-10-12 19:25:57,427 INFO L78 Accepts]: Start accepts. Automaton has 5085 states and 8674 transitions. Word has length 210 [2020-10-12 19:25:57,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:57,429 INFO L479 AbstractCegarLoop]: Abstraction has 5085 states and 8674 transitions. [2020-10-12 19:25:57,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:25:57,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5085 states and 8674 transitions. [2020-10-12 19:25:57,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-12 19:25:57,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:57,435 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] [2020-10-12 19:25:57,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:25:57,435 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:57,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:57,438 INFO L82 PathProgramCache]: Analyzing trace with hash -579232970, now seen corresponding path program 1 times [2020-10-12 19:25:57,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:57,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871863163] [2020-10-12 19:25:57,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:57,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:57,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:58,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:58,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:58,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:59,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:59,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:02,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:02,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-12 19:26:02,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:26:02,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-12 19:26:02,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:26:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 19:26:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 19:26:02,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:03,344 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-12 19:26:03,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:26:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:03,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:03,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:26:03,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:26:03,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:26:03,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:26:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:26:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:26:03,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:26:03,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871863163] [2020-10-12 19:26:03,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:26:03,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:26:03,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579764101] [2020-10-12 19:26:03,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:26:03,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:26:03,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:26:03,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:26:03,448 INFO L87 Difference]: Start difference. First operand 5085 states and 8674 transitions. Second operand 9 states. [2020-10-12 19:26:04,184 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 19:26:13,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:26:13,168 INFO L93 Difference]: Finished difference Result 49962 states and 84692 transitions. [2020-10-12 19:26:13,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:26:13,169 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 211 [2020-10-12 19:26:13,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:26:13,290 INFO L225 Difference]: With dead ends: 49962 [2020-10-12 19:26:13,291 INFO L226 Difference]: Without dead ends: 45765 [2020-10-12 19:26:13,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:26:13,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45765 states. [2020-10-12 19:26:15,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45765 to 13805. [2020-10-12 19:26:15,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13805 states. [2020-10-12 19:26:15,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13805 states to 13805 states and 23436 transitions. [2020-10-12 19:26:15,142 INFO L78 Accepts]: Start accepts. Automaton has 13805 states and 23436 transitions. Word has length 211 [2020-10-12 19:26:15,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:26:15,143 INFO L479 AbstractCegarLoop]: Abstraction has 13805 states and 23436 transitions. [2020-10-12 19:26:15,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:26:15,143 INFO L276 IsEmpty]: Start isEmpty. Operand 13805 states and 23436 transitions. [2020-10-12 19:26:15,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 19:26:15,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:26:15,149 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] [2020-10-12 19:26:15,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:26:15,150 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:26:15,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:26:15,150 INFO L82 PathProgramCache]: Analyzing trace with hash -833404830, now seen corresponding path program 1 times [2020-10-12 19:26:15,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:26:15,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075711600] [2020-10-12 19:26:15,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:26:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:15,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:15,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:15,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:15,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:16,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:16,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:20,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:20,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-12 19:26:20,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:26:20,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 19:26:20,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:20,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:26:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 19:26:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 19:26:20,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:21,027 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-12 19:26:21,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:26:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:21,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:21,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:21,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:26:21,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:26:21,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:26:21,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:21,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:26:21,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:26:21,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:26:21,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:21,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:26:21,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075711600] [2020-10-12 19:26:21,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:26:21,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:26:21,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815043975] [2020-10-12 19:26:21,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:26:21,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:26:21,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:26:21,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:26:21,098 INFO L87 Difference]: Start difference. First operand 13805 states and 23436 transitions. Second operand 9 states. [2020-10-12 19:26:22,002 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-12 19:26:37,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:26:37,655 INFO L93 Difference]: Finished difference Result 144526 states and 244518 transitions. [2020-10-12 19:26:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 19:26:37,655 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2020-10-12 19:26:37,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:26:37,943 INFO L225 Difference]: With dead ends: 144526 [2020-10-12 19:26:37,943 INFO L226 Difference]: Without dead ends: 131827 [2020-10-12 19:26:38,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:26:38,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131827 states. [2020-10-12 19:26:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131827 to 38058. [2020-10-12 19:26:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38058 states. [2020-10-12 19:26:41,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38058 states to 38058 states and 64426 transitions. [2020-10-12 19:26:41,977 INFO L78 Accepts]: Start accepts. Automaton has 38058 states and 64426 transitions. Word has length 212 [2020-10-12 19:26:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:26:41,978 INFO L479 AbstractCegarLoop]: Abstraction has 38058 states and 64426 transitions. [2020-10-12 19:26:41,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:26:41,978 INFO L276 IsEmpty]: Start isEmpty. Operand 38058 states and 64426 transitions. [2020-10-12 19:26:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-12 19:26:41,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:26:41,986 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] [2020-10-12 19:26:41,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:26:41,986 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:26:41,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:26:41,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1989133539, now seen corresponding path program 1 times [2020-10-12 19:26:41,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:26:41,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948255518] [2020-10-12 19:26:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:26:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:42,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:42,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:43,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:43,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:45,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:45,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:45,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:45,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:46,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:46,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:46,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:47,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:47,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:47,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-12 19:26:47,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:26:47,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5154 [2020-10-12 19:26:47,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:47,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:26:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-12 19:26:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 19:26:47,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:48,000 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-12 19:26:48,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:26:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:48,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:48,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:26:48,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:26:48,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:26:48,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:48,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:26:48,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:26:48,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:26:48,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:26:48,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948255518] [2020-10-12 19:26:48,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:26:48,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:26:48,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295123190] [2020-10-12 19:26:48,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:26:48,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:26:48,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:26:48,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:26:48,095 INFO L87 Difference]: Start difference. First operand 38058 states and 64426 transitions. Second operand 8 states. [2020-10-12 19:26:49,538 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 378 [2020-10-12 19:27:10,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:27:10,449 INFO L93 Difference]: Finished difference Result 220090 states and 372077 transitions. [2020-10-12 19:27:10,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:27:10,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-10-12 19:27:10,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:27:10,701 INFO L225 Difference]: With dead ends: 220090 [2020-10-12 19:27:10,701 INFO L226 Difference]: Without dead ends: 183268 [2020-10-12 19:27:10,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:27:10,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183268 states. [2020-10-12 19:27:17,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183268 to 72128. [2020-10-12 19:27:17,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72128 states. [2020-10-12 19:27:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72128 states to 72128 states and 121885 transitions. [2020-10-12 19:27:17,882 INFO L78 Accepts]: Start accepts. Automaton has 72128 states and 121885 transitions. Word has length 213 [2020-10-12 19:27:17,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:27:17,883 INFO L479 AbstractCegarLoop]: Abstraction has 72128 states and 121885 transitions. [2020-10-12 19:27:17,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:27:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 72128 states and 121885 transitions. [2020-10-12 19:27:17,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-12 19:27:17,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:27:17,888 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] [2020-10-12 19:27:17,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:27:17,889 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:27:17,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:27:17,889 INFO L82 PathProgramCache]: Analyzing trace with hash 458464444, now seen corresponding path program 1 times [2020-10-12 19:27:17,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:27:17,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466160066] [2020-10-12 19:27:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:27:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:18,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:18,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:18,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:18,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:18,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:18,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:19,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:19,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:21,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:21,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:22,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:23,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:23,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-12 19:27:23,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:27:23,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-12 19:27:23,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:23,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:27:23,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 19:27:23,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 19:27:23,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:23,719 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-12 19:27:23,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:27:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:23,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:23,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:23,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:27:23,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:27:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:27:23,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:27:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:27:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:27:23,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:27:23,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466160066] [2020-10-12 19:27:23,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:27:23,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:27:23,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942774837] [2020-10-12 19:27:23,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:27:23,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:27:23,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:27:23,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:27:23,800 INFO L87 Difference]: Start difference. First operand 72128 states and 121885 transitions. Second operand 8 states. [2020-10-12 19:27:24,536 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 378 [2020-10-12 19:27:50,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:27:50,687 INFO L93 Difference]: Finished difference Result 267554 states and 451643 transitions. [2020-10-12 19:27:50,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:27:50,688 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-10-12 19:27:50,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:27:51,108 INFO L225 Difference]: With dead ends: 267554 [2020-10-12 19:27:51,109 INFO L226 Difference]: Without dead ends: 226374 [2020-10-12 19:27:51,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:27:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226374 states. [2020-10-12 19:28:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226374 to 115710. [2020-10-12 19:28:04,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115710 states. [2020-10-12 19:28:04,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115710 states to 115710 states and 195417 transitions. [2020-10-12 19:28:04,738 INFO L78 Accepts]: Start accepts. Automaton has 115710 states and 195417 transitions. Word has length 213 [2020-10-12 19:28:04,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:28:04,739 INFO L479 AbstractCegarLoop]: Abstraction has 115710 states and 195417 transitions. [2020-10-12 19:28:04,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:28:04,739 INFO L276 IsEmpty]: Start isEmpty. Operand 115710 states and 195417 transitions. [2020-10-12 19:28:04,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-12 19:28:04,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:28:04,745 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] [2020-10-12 19:28:04,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:28:04,746 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:28:04,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:28:04,746 INFO L82 PathProgramCache]: Analyzing trace with hash -945840614, now seen corresponding path program 1 times [2020-10-12 19:28:04,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:28:04,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453054922] [2020-10-12 19:28:04,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:28:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:04,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:05,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:05,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:05,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:05,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:06,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:06,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:06,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:06,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:07,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:10,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:10,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-12 19:28:10,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:28:10,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5573 [2020-10-12 19:28:10,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:28:10,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 19:28:10,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 19:28:10,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:11,122 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-12 19:28:11,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:28:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:11,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:11,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:11,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:28:11,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:28:11,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:28:11,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:28:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:28:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:28:11,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:11,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:28:11,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453054922] [2020-10-12 19:28:11,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:28:11,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:28:11,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174400862] [2020-10-12 19:28:11,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:28:11,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:28:11,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:28:11,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:28:11,190 INFO L87 Difference]: Start difference. First operand 115710 states and 195417 transitions. Second operand 8 states. [2020-10-12 19:28:11,921 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 378 [2020-10-12 19:28:42,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:28:42,574 INFO L93 Difference]: Finished difference Result 296490 states and 500423 transitions. [2020-10-12 19:28:42,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:28:42,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-10-12 19:28:42,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:28:42,951 INFO L225 Difference]: With dead ends: 296490 [2020-10-12 19:28:42,951 INFO L226 Difference]: Without dead ends: 255310 [2020-10-12 19:28:43,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:28:43,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255310 states.