/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:22:42,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:22:42,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:22:42,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:22:42,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:22:42,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:22:42,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:22:42,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:22:42,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:22:42,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:22:42,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:22:42,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:22:42,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:22:42,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:22:42,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:22:42,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:22:42,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:22:42,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:22:42,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:22:42,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:22:42,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:22:42,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:22:42,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:22:42,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:22:42,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:22:42,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:22:42,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:22:42,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:22:42,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:22:42,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:22:42,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:22:42,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:22:42,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:22:42,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:22:42,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:22:42,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:22:42,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:22:42,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:22:42,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:22:42,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:22:42,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:22:42,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:22:42,578 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:22:42,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:22:42,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:22:42,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:22:42,581 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:22:42,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:22:42,581 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:22:42,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:22:42,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:22:42,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:22:42,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:22:42,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:22:42,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:22:42,584 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:22:42,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:22:42,584 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:22:42,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:22:42,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:22:42,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:22:42,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:22:42,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:22:42,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:22:42,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:22:42,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:22:42,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:22:42,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:22:42,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:22:42,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:22:42,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:22:42,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:22:42,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:22:42,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:22:42,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:22:42,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:22:42,896 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:22:42,897 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-12 20:22:42,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d3335b09/6a92cff8c9564e108dbbde2776e5b094/FLAG6f1a54fd9 [2020-10-12 20:22:43,553 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:22:43,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-12 20:22:43,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d3335b09/6a92cff8c9564e108dbbde2776e5b094/FLAG6f1a54fd9 [2020-10-12 20:22:43,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d3335b09/6a92cff8c9564e108dbbde2776e5b094 [2020-10-12 20:22:43,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:22:43,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:22:43,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:22:43,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:22:43,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:22:43,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:22:43" (1/1) ... [2020-10-12 20:22:43,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f98ced9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:43, skipping insertion in model container [2020-10-12 20:22:43,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:22:43" (1/1) ... [2020-10-12 20:22:43,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:22:43,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:22:44,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:22:44,843 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:22:45,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:22:45,241 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:22:45,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:45 WrapperNode [2020-10-12 20:22:45,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:22:45,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:22:45,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:22:45,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:22:45,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:45" (1/1) ... [2020-10-12 20:22:45,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:45" (1/1) ... [2020-10-12 20:22:45,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:45" (1/1) ... [2020-10-12 20:22:45,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:45" (1/1) ... [2020-10-12 20:22:45,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:45" (1/1) ... [2020-10-12 20:22:45,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:45" (1/1) ... [2020-10-12 20:22:45,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:45" (1/1) ... [2020-10-12 20:22:45,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:22:45,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:22:45,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:22:45,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:22:45,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:22:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:22:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:22:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:22:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:22:45,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:22:45,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:22:45,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:22:45,512 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:22:45,513 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:22:45,513 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:22:45,513 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:22:45,513 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:22:45,513 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:22:45,513 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:22:45,514 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:22:45,514 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:22:45,515 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:22:45,515 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:22:45,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:22:45,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:22:45,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:22:47,392 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:22:47,392 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:22:47,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:22:47 BoogieIcfgContainer [2020-10-12 20:22:47,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:22:47,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:22:47,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:22:47,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:22:47,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:22:43" (1/3) ... [2020-10-12 20:22:47,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48db05ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:22:47, skipping insertion in model container [2020-10-12 20:22:47,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:45" (2/3) ... [2020-10-12 20:22:47,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48db05ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:22:47, skipping insertion in model container [2020-10-12 20:22:47,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:22:47" (3/3) ... [2020-10-12 20:22:47,412 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-12 20:22:47,423 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:22:47,432 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:22:47,446 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:22:47,474 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:22:47,474 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:22:47,474 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:22:47,475 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:22:47,475 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:22:47,475 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:22:47,475 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:22:47,475 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:22:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states. [2020-10-12 20:22:47,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-12 20:22:47,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:47,531 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] [2020-10-12 20:22:47,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:47,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:47,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1332513549, now seen corresponding path program 1 times [2020-10-12 20:22:47,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:47,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972196352] [2020-10-12 20:22:47,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:48,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:48,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:49,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:49,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:50,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:50,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:50,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:51,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:51,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:53,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:53,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-12 20:22:53,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:22:53,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 20:22:53,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:22:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:22:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 20:22:53,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:22:54,060 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:22:54,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:54,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:54,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:54,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:54,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:54,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 20:22:54,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:54,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:22:54,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972196352] [2020-10-12 20:22:54,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:54,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:22:54,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331508268] [2020-10-12 20:22:54,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:22:54,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:54,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:22:54,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:54,372 INFO L87 Difference]: Start difference. First operand 641 states. Second operand 5 states. [2020-10-12 20:23:00,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:00,555 INFO L93 Difference]: Finished difference Result 1878 states and 3340 transitions. [2020-10-12 20:23:00,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:23:00,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-12 20:23:00,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:00,586 INFO L225 Difference]: With dead ends: 1878 [2020-10-12 20:23:00,586 INFO L226 Difference]: Without dead ends: 1242 [2020-10-12 20:23:00,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:23:00,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2020-10-12 20:23:00,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1240. [2020-10-12 20:23:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1240 states. [2020-10-12 20:23:00,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1943 transitions. [2020-10-12 20:23:00,718 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1943 transitions. Word has length 250 [2020-10-12 20:23:00,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:00,719 INFO L479 AbstractCegarLoop]: Abstraction has 1240 states and 1943 transitions. [2020-10-12 20:23:00,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:00,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1943 transitions. [2020-10-12 20:23:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-12 20:23:00,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:00,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:23:00,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:23:00,729 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:00,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:00,729 INFO L82 PathProgramCache]: Analyzing trace with hash 575076325, now seen corresponding path program 1 times [2020-10-12 20:23:00,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:00,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559303515] [2020-10-12 20:23:00,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:00,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:00,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:01,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:01,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:01,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:02,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:02,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:02,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:02,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:03,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:03,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:04,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:05,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:05,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-12 20:23:05,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:23:05,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-12 20:23:05,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:05,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:05,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:05,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 20:23:05,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:06,573 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:23:06,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:06,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:06,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:06,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:06,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:23:06,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:06,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:06,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:23:06,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559303515] [2020-10-12 20:23:06,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:06,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:06,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843449148] [2020-10-12 20:23:06,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:06,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:06,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:06,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:06,818 INFO L87 Difference]: Start difference. First operand 1240 states and 1943 transitions. Second operand 5 states. [2020-10-12 20:23:12,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:12,343 INFO L93 Difference]: Finished difference Result 3556 states and 5548 transitions. [2020-10-12 20:23:12,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:12,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-12 20:23:12,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:12,364 INFO L225 Difference]: With dead ends: 3556 [2020-10-12 20:23:12,364 INFO L226 Difference]: Without dead ends: 2388 [2020-10-12 20:23:12,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:23:12,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2020-10-12 20:23:12,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2386. [2020-10-12 20:23:12,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2386 states. [2020-10-12 20:23:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 3703 transitions. [2020-10-12 20:23:12,519 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 3703 transitions. Word has length 252 [2020-10-12 20:23:12,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:12,519 INFO L479 AbstractCegarLoop]: Abstraction has 2386 states and 3703 transitions. [2020-10-12 20:23:12,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:12,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 3703 transitions. [2020-10-12 20:23:12,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-12 20:23:12,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:12,527 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] [2020-10-12 20:23:12,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:23:12,527 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:12,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:12,528 INFO L82 PathProgramCache]: Analyzing trace with hash -2145851479, now seen corresponding path program 1 times [2020-10-12 20:23:12,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:12,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065612660] [2020-10-12 20:23:12,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:12,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:12,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:12,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:12,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:13,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:13,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:13,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:13,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:13,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:14,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:14,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:14,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:14,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:17,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:17,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 20:23:17,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:23:17,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:23:17,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 20:23:17,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:18,337 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:23:18,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:18,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:18,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:18,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:18,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 20:23:18,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:18,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:18,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:18,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:18,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:23:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:23:18,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065612660] [2020-10-12 20:23:18,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:18,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:18,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309256987] [2020-10-12 20:23:18,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:18,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:18,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:18,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:18,711 INFO L87 Difference]: Start difference. First operand 2386 states and 3703 transitions. Second operand 5 states. [2020-10-12 20:23:23,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:23,979 INFO L93 Difference]: Finished difference Result 6968 states and 10788 transitions. [2020-10-12 20:23:23,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:23,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-10-12 20:23:23,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:24,000 INFO L225 Difference]: With dead ends: 6968 [2020-10-12 20:23:24,000 INFO L226 Difference]: Without dead ends: 4650 [2020-10-12 20:23:24,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:23:24,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4650 states. [2020-10-12 20:23:24,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4650 to 4648. [2020-10-12 20:23:24,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4648 states. [2020-10-12 20:23:24,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 7152 transitions. [2020-10-12 20:23:24,194 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 7152 transitions. Word has length 254 [2020-10-12 20:23:24,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:24,195 INFO L479 AbstractCegarLoop]: Abstraction has 4648 states and 7152 transitions. [2020-10-12 20:23:24,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:24,196 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 7152 transitions. [2020-10-12 20:23:24,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-12 20:23:24,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:24,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:23:24,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:23:24,208 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:24,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:24,209 INFO L82 PathProgramCache]: Analyzing trace with hash 590611555, now seen corresponding path program 1 times [2020-10-12 20:23:24,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:24,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277416297] [2020-10-12 20:23:24,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:24,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:25,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:25,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:26,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:26,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:29,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:29,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-12 20:23:29,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:23:29,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 20:23:29,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 20:23:29,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:29,852 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:23:29,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:29,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:29,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:29,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:29,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:29,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:23:29,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:29,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:29,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:29,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:29,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:23:29,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277416297] [2020-10-12 20:23:29,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:29,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:29,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94001751] [2020-10-12 20:23:30,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:30,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:30,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:30,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:30,001 INFO L87 Difference]: Start difference. First operand 4648 states and 7152 transitions. Second operand 5 states. [2020-10-12 20:23:35,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:35,250 INFO L93 Difference]: Finished difference Result 13438 states and 20593 transitions. [2020-10-12 20:23:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:35,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-10-12 20:23:35,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:35,287 INFO L225 Difference]: With dead ends: 13438 [2020-10-12 20:23:35,287 INFO L226 Difference]: Without dead ends: 8990 [2020-10-12 20:23:35,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:23:35,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8990 states. [2020-10-12 20:23:35,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8990 to 8988. [2020-10-12 20:23:35,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8988 states. [2020-10-12 20:23:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8988 states to 8988 states and 13695 transitions. [2020-10-12 20:23:35,685 INFO L78 Accepts]: Start accepts. Automaton has 8988 states and 13695 transitions. Word has length 256 [2020-10-12 20:23:35,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:35,686 INFO L479 AbstractCegarLoop]: Abstraction has 8988 states and 13695 transitions. [2020-10-12 20:23:35,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:35,686 INFO L276 IsEmpty]: Start isEmpty. Operand 8988 states and 13695 transitions. [2020-10-12 20:23:35,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-12 20:23:35,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:35,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:23:35,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:23:35,705 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:35,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:35,706 INFO L82 PathProgramCache]: Analyzing trace with hash -372580754, now seen corresponding path program 1 times [2020-10-12 20:23:35,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:35,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137035233] [2020-10-12 20:23:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:35,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:35,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:35,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:36,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:36,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:36,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:36,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:36,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:36,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:38,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:38,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:39,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:40,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:40,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-12 20:23:40,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:23:40,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 20:23:40,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 20:23:40,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:41,332 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:23:41,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:41,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:41,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:41,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:41,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:41,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:23:41,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:41,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:23:41,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137035233] [2020-10-12 20:23:41,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:41,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:41,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956689569] [2020-10-12 20:23:41,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:41,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:41,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:41,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:41,523 INFO L87 Difference]: Start difference. First operand 8988 states and 13695 transitions. Second operand 5 states. [2020-10-12 20:23:47,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:47,470 INFO L93 Difference]: Finished difference Result 26169 states and 39752 transitions. [2020-10-12 20:23:47,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:47,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-12 20:23:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:47,523 INFO L225 Difference]: With dead ends: 26169 [2020-10-12 20:23:47,523 INFO L226 Difference]: Without dead ends: 17531 [2020-10-12 20:23:47,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:23:47,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17531 states. [2020-10-12 20:23:48,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17531 to 17529. [2020-10-12 20:23:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17529 states. [2020-10-12 20:23:48,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17529 states to 17529 states and 26462 transitions. [2020-10-12 20:23:48,186 INFO L78 Accepts]: Start accepts. Automaton has 17529 states and 26462 transitions. Word has length 258 [2020-10-12 20:23:48,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:48,186 INFO L479 AbstractCegarLoop]: Abstraction has 17529 states and 26462 transitions. [2020-10-12 20:23:48,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:48,186 INFO L276 IsEmpty]: Start isEmpty. Operand 17529 states and 26462 transitions. [2020-10-12 20:23:48,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-12 20:23:48,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:48,220 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] [2020-10-12 20:23:48,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:23:48,221 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:48,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:48,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1432501606, now seen corresponding path program 1 times [2020-10-12 20:23:48,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:48,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964615366] [2020-10-12 20:23:48,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:48,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:48,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:48,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:48,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:48,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:48,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:48,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:50,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:50,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:53,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:53,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-12 20:23:53,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:23:53,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:23:53,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:53,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:53,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:53,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 20:23:53,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:53,876 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:23:53,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:53,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:53,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:53,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:53,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:53,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:23:53,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:53,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:53,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:23:53,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964615366] [2020-10-12 20:23:53,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:53,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:53,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382227853] [2020-10-12 20:23:53,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:53,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:53,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:53,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:53,976 INFO L87 Difference]: Start difference. First operand 17529 states and 26462 transitions. Second operand 5 states. [2020-10-12 20:23:59,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:59,850 INFO L93 Difference]: Finished difference Result 51496 states and 77543 transitions. [2020-10-12 20:23:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:59,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-12 20:23:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:59,911 INFO L225 Difference]: With dead ends: 51496 [2020-10-12 20:23:59,911 INFO L226 Difference]: Without dead ends: 34226 [2020-10-12 20:23:59,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:23:59,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34226 states. [2020-10-12 20:24:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34226 to 34224. [2020-10-12 20:24:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34224 states. [2020-10-12 20:24:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34224 states to 34224 states and 51214 transitions. [2020-10-12 20:24:01,108 INFO L78 Accepts]: Start accepts. Automaton has 34224 states and 51214 transitions. Word has length 260 [2020-10-12 20:24:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:01,109 INFO L479 AbstractCegarLoop]: Abstraction has 34224 states and 51214 transitions. [2020-10-12 20:24:01,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:24:01,109 INFO L276 IsEmpty]: Start isEmpty. Operand 34224 states and 51214 transitions. [2020-10-12 20:24:01,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-12 20:24:01,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:01,164 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] [2020-10-12 20:24:01,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:24:01,164 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:01,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:01,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1342609096, now seen corresponding path program 1 times [2020-10-12 20:24:01,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:01,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155869906] [2020-10-12 20:24:01,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:01,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:01,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:02,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:02,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:02,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:02,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:02,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:02,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:02,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:02,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:02,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:04,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:06,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:06,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-12 20:24:06,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:24:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:24:06,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:24:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 20:24:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:06,796 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:24:06,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:06,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:06,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:06,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:06,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:06,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:24:06,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:06,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:06,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:06,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:06,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:24:06,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155869906] [2020-10-12 20:24:06,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:06,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:06,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587307883] [2020-10-12 20:24:06,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:06,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:06,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:06,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:06,918 INFO L87 Difference]: Start difference. First operand 34224 states and 51214 transitions. Second operand 5 states. [2020-10-12 20:24:14,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:14,863 INFO L93 Difference]: Finished difference Result 100041 states and 149370 transitions. [2020-10-12 20:24:14,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:24:14,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2020-10-12 20:24:14,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:14,980 INFO L225 Difference]: With dead ends: 100041 [2020-10-12 20:24:14,981 INFO L226 Difference]: Without dead ends: 67227 [2020-10-12 20:24:15,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:24:15,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67227 states. [2020-10-12 20:24:17,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67227 to 67225. [2020-10-12 20:24:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67225 states. [2020-10-12 20:24:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67225 states to 67225 states and 99832 transitions. [2020-10-12 20:24:17,676 INFO L78 Accepts]: Start accepts. Automaton has 67225 states and 99832 transitions. Word has length 262 [2020-10-12 20:24:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:17,677 INFO L479 AbstractCegarLoop]: Abstraction has 67225 states and 99832 transitions. [2020-10-12 20:24:17,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:24:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 67225 states and 99832 transitions. [2020-10-12 20:24:17,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-12 20:24:17,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:17,738 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] [2020-10-12 20:24:17,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:24:17,738 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:17,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:17,738 INFO L82 PathProgramCache]: Analyzing trace with hash -201489192, now seen corresponding path program 1 times [2020-10-12 20:24:17,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:17,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165731108] [2020-10-12 20:24:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:17,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:17,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:17,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:17,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:18,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:18,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:18,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:18,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:18,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:22,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:22,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-12 20:24:22,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:24:22,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-12 20:24:22,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:22,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:22,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 20:24:22,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 20:24:22,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:24:23,382 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:24:23,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:23,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:23,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:23,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:23,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:23,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:24:23,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:23,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:23,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:23,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:23,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:24:23,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165731108] [2020-10-12 20:24:23,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:23,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:23,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919307224] [2020-10-12 20:24:23,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:23,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:23,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:23,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:23,468 INFO L87 Difference]: Start difference. First operand 67225 states and 99832 transitions. Second operand 5 states. [2020-10-12 20:24:34,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:34,039 INFO L93 Difference]: Finished difference Result 183578 states and 271755 transitions. [2020-10-12 20:24:34,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:24:34,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 264 [2020-10-12 20:24:34,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:34,204 INFO L225 Difference]: With dead ends: 183578 [2020-10-12 20:24:34,204 INFO L226 Difference]: Without dead ends: 120984 [2020-10-12 20:24:34,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:24:34,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120984 states. [2020-10-12 20:24:37,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120984 to 70590. [2020-10-12 20:24:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70590 states. [2020-10-12 20:24:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70590 states to 70590 states and 104733 transitions. [2020-10-12 20:24:37,802 INFO L78 Accepts]: Start accepts. Automaton has 70590 states and 104733 transitions. Word has length 264 [2020-10-12 20:24:37,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:37,802 INFO L479 AbstractCegarLoop]: Abstraction has 70590 states and 104733 transitions. [2020-10-12 20:24:37,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:24:37,802 INFO L276 IsEmpty]: Start isEmpty. Operand 70590 states and 104733 transitions. [2020-10-12 20:24:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-12 20:24:37,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:37,861 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] [2020-10-12 20:24:37,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:24:37,862 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:37,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:37,862 INFO L82 PathProgramCache]: Analyzing trace with hash -481251569, now seen corresponding path program 1 times [2020-10-12 20:24:37,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:37,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608720103] [2020-10-12 20:24:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:37,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:37,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:39,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:41,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:42,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:42,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-12 20:24:42,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:24:42,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 20:24:42,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 20:24:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 20:24:42,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:43,456 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:24:43,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:43,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:43,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:43,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:43,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:43,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:24:43,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:43,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:24:43,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608720103] [2020-10-12 20:24:43,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:43,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:43,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824720331] [2020-10-12 20:24:43,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:43,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:43,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:43,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:43,535 INFO L87 Difference]: Start difference. First operand 70590 states and 104733 transitions. Second operand 5 states. [2020-10-12 20:24:56,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:56,413 INFO L93 Difference]: Finished difference Result 184114 states and 271103 transitions. [2020-10-12 20:24:56,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:24:56,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2020-10-12 20:24:56,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:56,538 INFO L225 Difference]: With dead ends: 184114 [2020-10-12 20:24:56,539 INFO L226 Difference]: Without dead ends: 125872 [2020-10-12 20:24:56,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:24:56,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125872 states. [2020-10-12 20:25:02,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125872 to 79430. [2020-10-12 20:25:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79430 states. [2020-10-12 20:25:02,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79430 states to 79430 states and 118701 transitions. [2020-10-12 20:25:02,687 INFO L78 Accepts]: Start accepts. Automaton has 79430 states and 118701 transitions. Word has length 266 [2020-10-12 20:25:02,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:25:02,688 INFO L479 AbstractCegarLoop]: Abstraction has 79430 states and 118701 transitions. [2020-10-12 20:25:02,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:25:02,688 INFO L276 IsEmpty]: Start isEmpty. Operand 79430 states and 118701 transitions. [2020-10-12 20:25:02,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-12 20:25:02,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:02,744 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] [2020-10-12 20:25:02,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:25:02,744 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:02,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:02,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1652684239, now seen corresponding path program 1 times [2020-10-12 20:25:02,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:02,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472787516] [2020-10-12 20:25:02,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:02,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:02,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:02,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:02,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:02,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:02,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:03,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:03,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:03,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:03,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:03,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:03,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:03,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:05,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:07,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:07,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-12 20:25:07,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:25:07,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 20:25:07,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:07,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:25:07,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 20:25:07,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:25:07,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:25:08,374 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:25:08,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:25:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:08,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:08,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:25:08,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:25:08,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:25:08,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:25:08,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:25:08,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:25:08,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:08,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:25:08,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472787516] [2020-10-12 20:25:08,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:25:08,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:25:08,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014016211] [2020-10-12 20:25:08,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:25:08,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:25:08,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:25:08,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:25:08,446 INFO L87 Difference]: Start difference. First operand 79430 states and 118701 transitions. Second operand 5 states. [2020-10-12 20:25:22,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:25:22,030 INFO L93 Difference]: Finished difference Result 195718 states and 289330 transitions. [2020-10-12 20:25:22,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:25:22,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2020-10-12 20:25:22,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:25:22,159 INFO L225 Difference]: With dead ends: 195718 [2020-10-12 20:25:22,159 INFO L226 Difference]: Without dead ends: 139908 [2020-10-12 20:25:22,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:25:22,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139908 states. [2020-10-12 20:25:30,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139908 to 91650. [2020-10-12 20:25:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91650 states. [2020-10-12 20:25:30,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91650 states to 91650 states and 138800 transitions. [2020-10-12 20:25:30,260 INFO L78 Accepts]: Start accepts. Automaton has 91650 states and 138800 transitions. Word has length 268 [2020-10-12 20:25:30,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:25:30,261 INFO L479 AbstractCegarLoop]: Abstraction has 91650 states and 138800 transitions. [2020-10-12 20:25:30,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:25:30,261 INFO L276 IsEmpty]: Start isEmpty. Operand 91650 states and 138800 transitions. [2020-10-12 20:25:30,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-12 20:25:30,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:30,325 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] [2020-10-12 20:25:30,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:25:30,326 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:30,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:30,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1624304445, now seen corresponding path program 1 times [2020-10-12 20:25:30,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:30,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756275018] [2020-10-12 20:25:30,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:30,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:30,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:35,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:35,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 20:25:35,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:25:35,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 20:25:35,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:35,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:25:35,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 20:25:35,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 20:25:35,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:35,928 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:25:35,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:25:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:35,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:35,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:35,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:25:35,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:25:35,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:25:35,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:35,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:25:35,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:25:35,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:25:35,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:36,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:25:36,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756275018] [2020-10-12 20:25:36,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:25:36,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:25:36,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608576598] [2020-10-12 20:25:36,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:25:36,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:25:36,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:25:36,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:25:36,013 INFO L87 Difference]: Start difference. First operand 91650 states and 138800 transitions. Second operand 5 states. [2020-10-12 20:25:53,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:25:53,438 INFO L93 Difference]: Finished difference Result 252020 states and 379645 transitions. [2020-10-12 20:25:53,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:25:53,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-12 20:25:53,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:25:53,641 INFO L225 Difference]: With dead ends: 252020 [2020-10-12 20:25:53,642 INFO L226 Difference]: Without dead ends: 181598 [2020-10-12 20:25:53,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:25:53,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181598 states. [2020-10-12 20:26:04,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181598 to 115556. [2020-10-12 20:26:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115556 states. [2020-10-12 20:26:04,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115556 states to 115556 states and 175947 transitions. [2020-10-12 20:26:04,866 INFO L78 Accepts]: Start accepts. Automaton has 115556 states and 175947 transitions. Word has length 269 [2020-10-12 20:26:04,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:26:04,866 INFO L479 AbstractCegarLoop]: Abstraction has 115556 states and 175947 transitions. [2020-10-12 20:26:04,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:26:04,866 INFO L276 IsEmpty]: Start isEmpty. Operand 115556 states and 175947 transitions. [2020-10-12 20:26:04,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-12 20:26:04,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:26:04,982 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] [2020-10-12 20:26:04,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:26:04,982 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:26:04,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:26:04,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1067084927, now seen corresponding path program 1 times [2020-10-12 20:26:04,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:26:04,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844470192] [2020-10-12 20:26:04,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:26:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:05,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:05,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:05,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:05,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:05,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:05,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:05,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:05,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:06,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:06,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:06,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:10,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:10,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-12 20:26:10,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:26:10,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:26:10,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:10,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:26:10,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:26:10,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 20:26:10,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:10,704 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-12 20:26:10,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:26:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:26:10,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:26:10,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:26:10,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:26:10,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:26:10,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 20:26:10,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:26:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:26:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:26:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:26:10,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:26:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:26:10,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844470192] [2020-10-12 20:26:10,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:26:10,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:26:10,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232791162] [2020-10-12 20:26:10,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:26:10,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:26:10,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:26:10,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:26:10,809 INFO L87 Difference]: Start difference. First operand 115556 states and 175947 transitions. Second operand 9 states. [2020-10-12 20:26:11,383 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 283