/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=NARROWEST --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.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:06:08,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:06:08,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:06:08,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:06:08,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:06:08,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:06:08,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:06:08,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:06:08,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:06:08,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:06:08,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:06:08,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:06:08,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:06:08,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:06:08,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:06:08,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:06:08,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:06:08,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:06:08,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:06:08,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:06:08,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:06:08,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:06:08,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:06:08,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:06:08,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:06:08,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:06:08,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:06:08,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:06:08,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:06:08,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:06:08,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:06:08,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:06:08,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:06:08,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:06:08,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:06:08,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:06:08,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:06:08,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:06:08,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:06:08,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:06:08,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:06:08,467 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 [2020-10-13 14:06:08,490 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:06:08,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:06:08,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:06:08,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:06:08,492 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:06:08,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:06:08,492 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:06:08,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:06:08,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:06:08,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:06:08,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:06:08,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:06:08,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:06:08,493 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:06:08,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:06:08,494 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:06:08,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:06:08,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:06:08,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:06:08,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:06:08,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:06:08,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:06:08,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:06:08,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:06:08,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:06:08,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:06:08,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:06:08,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:06:08,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:06:08,497 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:06:08,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:06:08,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:06:08,891 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:06:08,893 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:06:08,894 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:06:08,895 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-13 14:06:08,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2dd24c6c/2ab3836f04624d87a7e521ca3dbc16c4/FLAG040ff88f4 [2020-10-13 14:06:09,727 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:06:09,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-13 14:06:09,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2dd24c6c/2ab3836f04624d87a7e521ca3dbc16c4/FLAG040ff88f4 [2020-10-13 14:06:10,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2dd24c6c/2ab3836f04624d87a7e521ca3dbc16c4 [2020-10-13 14:06:10,278 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:06:10,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:06:10,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:06:10,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:06:10,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:06:10,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:06:10" (1/1) ... [2020-10-13 14:06:10,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b57a4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:10, skipping insertion in model container [2020-10-13 14:06:10,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:06:10" (1/1) ... [2020-10-13 14:06:10,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:06:10,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:06:12,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:06:12,650 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:06:14,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:06:14,259 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:06:14,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:14 WrapperNode [2020-10-13 14:06:14,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:06:14,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:06:14,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:06:14,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:06:14,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:14" (1/1) ... [2020-10-13 14:06:14,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:14" (1/1) ... [2020-10-13 14:06:14,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:14" (1/1) ... [2020-10-13 14:06:14,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:14" (1/1) ... [2020-10-13 14:06:14,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:14" (1/1) ... [2020-10-13 14:06:14,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:14" (1/1) ... [2020-10-13 14:06:14,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:14" (1/1) ... [2020-10-13 14:06:14,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:06:14,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:06:14,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:06:14,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:06:14,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:14" (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 [2020-10-13 14:06:14,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:06:14,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:06:14,647 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:06:14,647 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:06:14,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:06:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:06:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:06:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:06:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:06:14,648 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:06:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:06:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:06:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:06:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:06:14,649 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:06:14,650 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:06:14,650 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:06:14,650 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:06:14,650 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:06:14,651 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:06:14,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:06:14,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:06:20,123 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:06:20,123 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:06:20,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:06:20 BoogieIcfgContainer [2020-10-13 14:06:20,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:06:20,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:06:20,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:06:20,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:06:20,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:06:10" (1/3) ... [2020-10-13 14:06:20,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfbab7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:06:20, skipping insertion in model container [2020-10-13 14:06:20,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:06:14" (2/3) ... [2020-10-13 14:06:20,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cfbab7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:06:20, skipping insertion in model container [2020-10-13 14:06:20,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:06:20" (3/3) ... [2020-10-13 14:06:20,153 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-13 14:06:20,164 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:06:20,173 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-13 14:06:20,187 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-13 14:06:20,221 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:06:20,221 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:06:20,221 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:06:20,221 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:06:20,221 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:06:20,222 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:06:20,222 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:06:20,222 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:06:20,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states. [2020-10-13 14:06:20,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-13 14:06:20,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:06:20,316 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] [2020-10-13 14:06:20,317 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:06:20,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:06:20,323 INFO L82 PathProgramCache]: Analyzing trace with hash -2040294362, now seen corresponding path program 1 times [2020-10-13 14:06:20,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:06:20,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252228687] [2020-10-13 14:06:20,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:06:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:21,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:22,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:23,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:23,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:24,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:26,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:26,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-13 14:06:26,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:06:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-13 14:06:26,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:06:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 14:06:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:06:26,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:06:27,231 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-13 14:06:27,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:06:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:27,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:27,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:27,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:06:27,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:06:27,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 14:06:27,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:27,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:06:27,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:06:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:06:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:06:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:06:27,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252228687] [2020-10-13 14:06:27,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:06:27,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:06:27,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271776695] [2020-10-13 14:06:27,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:06:27,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:06:27,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:06:27,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:06:27,450 INFO L87 Difference]: Start difference. First operand 2249 states. Second operand 5 states. [2020-10-13 14:06:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:06:43,114 INFO L93 Difference]: Finished difference Result 3956 states and 6884 transitions. [2020-10-13 14:06:43,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:06:43,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2020-10-13 14:06:43,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:06:43,154 INFO L225 Difference]: With dead ends: 3956 [2020-10-13 14:06:43,154 INFO L226 Difference]: Without dead ends: 2245 [2020-10-13 14:06:43,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:06:43,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2020-10-13 14:06:43,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2245. [2020-10-13 14:06:43,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2245 states. [2020-10-13 14:06:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 3871 transitions. [2020-10-13 14:06:43,356 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 3871 transitions. Word has length 290 [2020-10-13 14:06:43,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:06:43,359 INFO L479 AbstractCegarLoop]: Abstraction has 2245 states and 3871 transitions. [2020-10-13 14:06:43,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:06:43,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 3871 transitions. [2020-10-13 14:06:43,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-13 14:06:43,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:06:43,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:06:43,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:06:43,377 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:06:43,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:06:43,377 INFO L82 PathProgramCache]: Analyzing trace with hash -875879150, now seen corresponding path program 1 times [2020-10-13 14:06:43,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:06:43,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207554580] [2020-10-13 14:06:43,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:06:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:43,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:43,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:44,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:44,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:44,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:44,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:47,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:48,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:48,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:48,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-13 14:06:48,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:06:48,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-13 14:06:48,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:48,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:06:48,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 197 [2020-10-13 14:06:48,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:06:48,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:49,970 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 394 [2020-10-13 14:06:49,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:06:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:49,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:50,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:50,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:06:50,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:06:50,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 14:06:50,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:06:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:06:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:06:50,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:06:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:06:50,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207554580] [2020-10-13 14:06:50,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:06:50,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:06:50,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844491094] [2020-10-13 14:06:50,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:06:50,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:06:50,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:06:50,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:06:50,288 INFO L87 Difference]: Start difference. First operand 2245 states and 3871 transitions. Second operand 4 states. [2020-10-13 14:07:05,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:07:05,261 INFO L93 Difference]: Finished difference Result 5227 states and 8992 transitions. [2020-10-13 14:07:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:07:05,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 349 [2020-10-13 14:07:05,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:07:05,286 INFO L225 Difference]: With dead ends: 5227 [2020-10-13 14:07:05,286 INFO L226 Difference]: Without dead ends: 3731 [2020-10-13 14:07:05,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:07:05,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2020-10-13 14:07:05,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3639. [2020-10-13 14:07:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2020-10-13 14:07:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 6257 transitions. [2020-10-13 14:07:05,419 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 6257 transitions. Word has length 349 [2020-10-13 14:07:05,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:07:05,420 INFO L479 AbstractCegarLoop]: Abstraction has 3639 states and 6257 transitions. [2020-10-13 14:07:05,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:07:05,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 6257 transitions. [2020-10-13 14:07:05,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-13 14:07:05,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:07:05,434 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:07:05,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:07:05,435 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:07:05,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:07:05,435 INFO L82 PathProgramCache]: Analyzing trace with hash -289106790, now seen corresponding path program 1 times [2020-10-13 14:07:05,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:07:05,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429081149] [2020-10-13 14:07:05,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:07:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:05,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:06,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:06,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:06,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:06,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:07,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:07,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:08,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:10,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:10,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-13 14:07:10,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:07:10,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 14:07:10,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:10,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:07:10,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-13 14:07:10,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 14:07:10,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:07:11,591 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-13 14:07:11,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:07:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:11,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:11,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:11,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:07:11,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:07:11,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 14:07:11,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:11,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:07:11,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:07:11,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:07:11,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:07:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:07:11,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429081149] [2020-10-13 14:07:11,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:07:11,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:07:11,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001013276] [2020-10-13 14:07:11,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:07:11,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:07:11,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:07:11,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:07:11,880 INFO L87 Difference]: Start difference. First operand 3639 states and 6257 transitions. Second operand 4 states. [2020-10-13 14:07:12,668 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-10-13 14:07:26,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:07:26,782 INFO L93 Difference]: Finished difference Result 5183 states and 8897 transitions. [2020-10-13 14:07:26,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:07:26,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 365 [2020-10-13 14:07:26,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:07:26,795 INFO L225 Difference]: With dead ends: 5183 [2020-10-13 14:07:26,796 INFO L226 Difference]: Without dead ends: 2271 [2020-10-13 14:07:26,802 INFO L675 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 [2020-10-13 14:07:26,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2020-10-13 14:07:26,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 2269. [2020-10-13 14:07:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2269 states. [2020-10-13 14:07:26,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 3905 transitions. [2020-10-13 14:07:26,880 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 3905 transitions. Word has length 365 [2020-10-13 14:07:26,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:07:26,882 INFO L479 AbstractCegarLoop]: Abstraction has 2269 states and 3905 transitions. [2020-10-13 14:07:26,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:07:26,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 3905 transitions. [2020-10-13 14:07:26,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-13 14:07:26,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:07:26,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:07:26,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:07:26,896 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:07:26,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:07:26,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1990067750, now seen corresponding path program 1 times [2020-10-13 14:07:26,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:07:26,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610358934] [2020-10-13 14:07:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:07:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:27,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:27,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:27,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:27,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:28,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:29,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:29,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:29,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:30,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:30,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:32,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:32,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-13 14:07:32,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:07:32,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:07:32,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:07:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-13 14:07:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:07:32,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:32,874 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-13 14:07:32,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:07:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:32,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:32,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:32,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:07:32,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:07:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:07:32,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:07:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:07:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:07:32,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:07:33,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610358934] [2020-10-13 14:07:33,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:07:33,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:07:33,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552688061] [2020-10-13 14:07:33,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:07:33,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:07:33,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:07:33,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:07:33,017 INFO L87 Difference]: Start difference. First operand 2269 states and 3905 transitions. Second operand 5 states. [2020-10-13 14:07:45,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:07:45,696 INFO L93 Difference]: Finished difference Result 3815 states and 6544 transitions. [2020-10-13 14:07:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:07:45,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 365 [2020-10-13 14:07:45,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:07:45,712 INFO L225 Difference]: With dead ends: 3815 [2020-10-13 14:07:45,712 INFO L226 Difference]: Without dead ends: 2269 [2020-10-13 14:07:45,716 INFO L675 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 [2020-10-13 14:07:45,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2020-10-13 14:07:45,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2269. [2020-10-13 14:07:45,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2269 states. [2020-10-13 14:07:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 3895 transitions. [2020-10-13 14:07:45,797 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 3895 transitions. Word has length 365 [2020-10-13 14:07:45,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:07:45,798 INFO L479 AbstractCegarLoop]: Abstraction has 2269 states and 3895 transitions. [2020-10-13 14:07:45,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:07:45,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 3895 transitions. [2020-10-13 14:07:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-13 14:07:45,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:07:45,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:07:45,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:07:45,811 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:07:45,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:07:45,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1544741361, now seen corresponding path program 1 times [2020-10-13 14:07:45,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:07:45,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673193963] [2020-10-13 14:07:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:07:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:46,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:46,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:46,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:46,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:46,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:47,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:47,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:47,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:47,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:48,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:48,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:50,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:50,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:51,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:51,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-13 14:07:51,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:07:51,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 14:07:51,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:07:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 219 [2020-10-13 14:07:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:07:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:51,934 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-13 14:07:51,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:07:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:51,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:51,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:51,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:07:51,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:07:51,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:07:51,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:07:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:07:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:07:51,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:07:52,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673193963] [2020-10-13 14:07:52,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:07:52,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:07:52,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072231437] [2020-10-13 14:07:52,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:07:52,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:07:52,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:07:52,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:07:52,107 INFO L87 Difference]: Start difference. First operand 2269 states and 3895 transitions. Second operand 4 states. [2020-10-13 14:08:12,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:08:12,088 INFO L93 Difference]: Finished difference Result 5202 states and 8885 transitions. [2020-10-13 14:08:12,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:08:12,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 374 [2020-10-13 14:08:12,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:08:12,106 INFO L225 Difference]: With dead ends: 5202 [2020-10-13 14:08:12,106 INFO L226 Difference]: Without dead ends: 3652 [2020-10-13 14:08:12,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:08:12,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3652 states. [2020-10-13 14:08:12,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3652 to 3627. [2020-10-13 14:08:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3627 states. [2020-10-13 14:08:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 6173 transitions. [2020-10-13 14:08:12,226 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 6173 transitions. Word has length 374 [2020-10-13 14:08:12,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:08:12,227 INFO L479 AbstractCegarLoop]: Abstraction has 3627 states and 6173 transitions. [2020-10-13 14:08:12,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:08:12,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 6173 transitions. [2020-10-13 14:08:12,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-13 14:08:12,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:08:12,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:08:12,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:08:12,237 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:08:12,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:08:12,237 INFO L82 PathProgramCache]: Analyzing trace with hash 26166223, now seen corresponding path program 1 times [2020-10-13 14:08:12,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:08:12,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177000794] [2020-10-13 14:08:12,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:08:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:12,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:12,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:12,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:12,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:12,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:13,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:13,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:13,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:14,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:14,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:16,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:16,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:17,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:17,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:17,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-13 14:08:17,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:08:17,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:08:17,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:08:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 219 [2020-10-13 14:08:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:08:17,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:08:18,177 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-13 14:08:18,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:08:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:18,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:18,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:18,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:08:18,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:08:18,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:08:18,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:08:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:08:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:08:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:18,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:08:18,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177000794] [2020-10-13 14:08:18,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:08:18,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:08:18,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991037506] [2020-10-13 14:08:18,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:08:18,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:08:18,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:08:18,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:08:18,293 INFO L87 Difference]: Start difference. First operand 3627 states and 6173 transitions. Second operand 4 states. [2020-10-13 14:08:19,073 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-10-13 14:08:35,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:08:35,880 INFO L93 Difference]: Finished difference Result 7152 states and 12128 transitions. [2020-10-13 14:08:35,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:08:35,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 376 [2020-10-13 14:08:35,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:08:35,901 INFO L225 Difference]: With dead ends: 7152 [2020-10-13 14:08:35,901 INFO L226 Difference]: Without dead ends: 4246 [2020-10-13 14:08:35,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:08:35,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2020-10-13 14:08:36,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 4225. [2020-10-13 14:08:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4225 states. [2020-10-13 14:08:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4225 states to 4225 states and 7154 transitions. [2020-10-13 14:08:36,029 INFO L78 Accepts]: Start accepts. Automaton has 4225 states and 7154 transitions. Word has length 376 [2020-10-13 14:08:36,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:08:36,030 INFO L479 AbstractCegarLoop]: Abstraction has 4225 states and 7154 transitions. [2020-10-13 14:08:36,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:08:36,030 INFO L276 IsEmpty]: Start isEmpty. Operand 4225 states and 7154 transitions. [2020-10-13 14:08:36,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-13 14:08:36,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:08:36,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:08:36,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:08:36,042 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:08:36,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:08:36,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1415981807, now seen corresponding path program 1 times [2020-10-13 14:08:36,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:08:36,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566207545] [2020-10-13 14:08:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:08:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:36,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:36,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:36,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:36,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:36,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:36,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:37,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:38,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:39,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:39,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:39,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:39,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:40,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:41,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:41,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:41,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-13 14:08:41,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:08:41,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 14:08:41,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:08:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 218 [2020-10-13 14:08:41,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:08:41,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:42,051 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-13 14:08:42,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:08:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:42,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:42,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:42,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:08:42,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:08:42,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:08:42,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:08:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:08:42,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:08:42,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:08:42,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566207545] [2020-10-13 14:08:42,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:08:42,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:08:42,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600003220] [2020-10-13 14:08:42,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:08:42,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:08:42,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:08:42,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:08:42,182 INFO L87 Difference]: Start difference. First operand 4225 states and 7154 transitions. Second operand 4 states. [2020-10-13 14:08:42,995 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-13 14:09:05,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:09:05,261 INFO L93 Difference]: Finished difference Result 10806 states and 18264 transitions. [2020-10-13 14:09:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:09:05,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 376 [2020-10-13 14:09:05,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:09:05,295 INFO L225 Difference]: With dead ends: 10806 [2020-10-13 14:09:05,295 INFO L226 Difference]: Without dead ends: 7618 [2020-10-13 14:09:05,302 INFO L675 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 [2020-10-13 14:09:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7618 states. [2020-10-13 14:09:05,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7618 to 7614. [2020-10-13 14:09:05,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7614 states. [2020-10-13 14:09:05,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7614 states to 7614 states and 12862 transitions. [2020-10-13 14:09:05,534 INFO L78 Accepts]: Start accepts. Automaton has 7614 states and 12862 transitions. Word has length 376 [2020-10-13 14:09:05,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:09:05,535 INFO L479 AbstractCegarLoop]: Abstraction has 7614 states and 12862 transitions. [2020-10-13 14:09:05,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:09:05,535 INFO L276 IsEmpty]: Start isEmpty. Operand 7614 states and 12862 transitions. [2020-10-13 14:09:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-13 14:09:05,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:09:05,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:09:05,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:09:05,549 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:09:05,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:09:05,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1402616349, now seen corresponding path program 1 times [2020-10-13 14:09:05,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:09:05,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248488612] [2020-10-13 14:09:05,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:09:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:09:05,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:05,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:05,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:06,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:06,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:07,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:07,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:08,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:08,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:09,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:10,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:10,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:10,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:10,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:09:10,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-13 14:09:10,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:09:10,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-13 14:09:10,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:09:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:09:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-13 14:09:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 14:09:10,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:09:11,626 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-13 14:09:11,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:09:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:09:11,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:11,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:09:11,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:09:11,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:09:11,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 14:09:11,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:09:11,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:09:11,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:09:11,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:09:11,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:09:11,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:09:11,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248488612] [2020-10-13 14:09:11,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:09:11,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:09:11,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689696023] [2020-10-13 14:09:11,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:09:11,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:09:11,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:09:11,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:09:11,766 INFO L87 Difference]: Start difference. First operand 7614 states and 12862 transitions. Second operand 4 states. [2020-10-13 14:09:27,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:09:27,483 INFO L93 Difference]: Finished difference Result 20175 states and 34091 transitions. [2020-10-13 14:09:27,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:09:27,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 377 [2020-10-13 14:09:27,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:09:27,519 INFO L225 Difference]: With dead ends: 20175 [2020-10-13 14:09:27,519 INFO L226 Difference]: Without dead ends: 13586 [2020-10-13 14:09:27,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:09:27,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13586 states. [2020-10-13 14:09:27,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13586 to 13098. [2020-10-13 14:09:27,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13098 states. [2020-10-13 14:09:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13098 states to 13098 states and 22035 transitions. [2020-10-13 14:09:27,992 INFO L78 Accepts]: Start accepts. Automaton has 13098 states and 22035 transitions. Word has length 377 [2020-10-13 14:09:27,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:09:27,993 INFO L479 AbstractCegarLoop]: Abstraction has 13098 states and 22035 transitions. [2020-10-13 14:09:27,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:09:27,993 INFO L276 IsEmpty]: Start isEmpty. Operand 13098 states and 22035 transitions. [2020-10-13 14:09:28,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-13 14:09:28,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:09:28,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:09:28,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:09:28,015 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:09:28,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:09:28,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1745803355, now seen corresponding path program 1 times [2020-10-13 14:09:28,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:09:28,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631477154] [2020-10-13 14:09:28,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:09:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:09:28,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:28,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:28,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:28,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:28,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:28,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:29,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:29,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:29,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:29,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:30,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:30,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:30,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:33,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:09:33,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-13 14:09:33,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:09:33,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:09:33,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:09:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:09:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-10-13 14:09:33,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 14:09:33,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:09:33,997 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-13 14:09:33,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:09:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:09:34,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:34,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:09:34,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:09:34,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:09:34,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:09:34,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:09:34,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:09:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:09:34,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:09:34,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:09:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:09:34,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631477154] [2020-10-13 14:09:34,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:09:34,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:09:34,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050316247] [2020-10-13 14:09:34,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:09:34,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:09:34,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:09:34,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:09:34,125 INFO L87 Difference]: Start difference. First operand 13098 states and 22035 transitions. Second operand 4 states. [2020-10-13 14:09:49,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:09:49,215 INFO L93 Difference]: Finished difference Result 35614 states and 59995 transitions. [2020-10-13 14:09:49,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:09:49,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 393 [2020-10-13 14:09:49,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:09:49,261 INFO L225 Difference]: With dead ends: 35614 [2020-10-13 14:09:49,261 INFO L226 Difference]: Without dead ends: 23620 [2020-10-13 14:09:49,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:09:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23620 states. [2020-10-13 14:09:49,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23620 to 22648. [2020-10-13 14:09:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22648 states. [2020-10-13 14:09:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22648 states to 22648 states and 37931 transitions. [2020-10-13 14:09:50,008 INFO L78 Accepts]: Start accepts. Automaton has 22648 states and 37931 transitions. Word has length 393 [2020-10-13 14:09:50,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:09:50,009 INFO L479 AbstractCegarLoop]: Abstraction has 22648 states and 37931 transitions. [2020-10-13 14:09:50,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:09:50,010 INFO L276 IsEmpty]: Start isEmpty. Operand 22648 states and 37931 transitions. [2020-10-13 14:09:50,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-13 14:09:50,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:09:50,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:09:50,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:09:50,042 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:09:50,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:09:50,042 INFO L82 PathProgramCache]: Analyzing trace with hash -863776659, now seen corresponding path program 1 times [2020-10-13 14:09:50,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:09:50,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267620602] [2020-10-13 14:09:50,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:09:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:09:50,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:50,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:50,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:50,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:50,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:50,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:51,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:51,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:51,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:54,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:54,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:54,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:55,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:55,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:09:55,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-13 14:09:55,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:09:55,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 14:09:55,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:09:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:09:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-13 14:09:55,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 14:09:55,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:09:56,314 WARN L193 SmtUtils]: Spent 934.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-13 14:09:56,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:09:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:09:56,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:09:56,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:09:56,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:09:56,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:09:56,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:09:56,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:09:56,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:09:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:09:56,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:09:56,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:09:56,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:09:56,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267620602] [2020-10-13 14:09:56,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:09:56,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:09:56,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013023822] [2020-10-13 14:09:56,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:09:56,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:09:56,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:09:56,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:09:56,432 INFO L87 Difference]: Start difference. First operand 22648 states and 37931 transitions. Second operand 4 states. [2020-10-13 14:09:57,284 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 398