/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:52:54,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:52:54,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:52:54,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:52:54,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:52:54,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:52:54,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:52:54,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:52:54,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:52:54,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:52:54,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:52:54,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:52:54,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:52:54,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:52:54,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:52:54,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:52:54,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:52:54,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:52:54,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:52:54,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:52:54,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:52:54,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:52:54,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:52:54,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:52:54,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:52:54,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:52:54,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:52:54,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:52:54,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:52:54,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:52:54,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:52:54,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:52:54,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:52:54,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:52:54,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:52:54,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:52:54,560 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:52:54,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:52:54,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:52:54,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:52:54,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:52:54,571 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 [2020-10-27 04:52:54,621 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:52:54,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:52:54,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:52:54,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:52:54,627 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:52:54,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:52:54,627 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:52:54,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:52:54,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:52:54,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:52:54,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:52:54,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:52:54,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:52:54,630 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:52:54,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:52:54,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:52:54,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:52:54,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:52:54,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:52:54,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:52:54,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:52:54,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:52:54,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:52:54,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:52:54,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:52:54,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:52:54,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:52:54,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:52:54,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:52:54,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:52:55,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:52:55,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:52:55,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:52:55,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:52:55,135 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:52:55,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 04:52:55,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dca837ad/9cc98afe96c1477f960bd496b4a413f8/FLAGe138151b1 [2020-10-27 04:52:56,019 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:52:56,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 04:52:56,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dca837ad/9cc98afe96c1477f960bd496b4a413f8/FLAGe138151b1 [2020-10-27 04:52:56,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0dca837ad/9cc98afe96c1477f960bd496b4a413f8 [2020-10-27 04:52:56,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:52:56,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:52:56,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:52:56,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:52:56,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:52:56,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:52:56" (1/1) ... [2020-10-27 04:52:56,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ec93ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:56, skipping insertion in model container [2020-10-27 04:52:56,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:52:56" (1/1) ... [2020-10-27 04:52:56,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:52:56,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:52:56,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:52:56,926 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:52:57,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:52:57,177 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:52:57,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:57 WrapperNode [2020-10-27 04:52:57,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:52:57,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:52:57,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:52:57,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:52:57,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:57" (1/1) ... [2020-10-27 04:52:57,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:57" (1/1) ... [2020-10-27 04:52:57,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:57" (1/1) ... [2020-10-27 04:52:57,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:57" (1/1) ... [2020-10-27 04:52:57,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:57" (1/1) ... [2020-10-27 04:52:57,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:57" (1/1) ... [2020-10-27 04:52:57,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:57" (1/1) ... [2020-10-27 04:52:57,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:52:57,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:52:57,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:52:57,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:52:57,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:57" (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 [2020-10-27 04:52:57,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:52:57,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:52:57,450 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:52:57,450 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:52:57,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:52:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:52:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:52:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:52:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:52:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:52:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:52:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:52:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:52:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:52:57,454 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:52:57,454 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:52:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:52:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:52:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:52:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:52:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:52:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:52:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:52:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:52:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:52:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:52:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:52:57,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:52:58,647 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:52:58,647 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:52:58,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:52:58 BoogieIcfgContainer [2020-10-27 04:52:58,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:52:58,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:52:58,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:52:58,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:52:58,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:52:56" (1/3) ... [2020-10-27 04:52:58,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bac70c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:52:58, skipping insertion in model container [2020-10-27 04:52:58,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:52:57" (2/3) ... [2020-10-27 04:52:58,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bac70c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:52:58, skipping insertion in model container [2020-10-27 04:52:58,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:52:58" (3/3) ... [2020-10-27 04:52:58,659 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 04:52:58,672 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:52:58,678 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:52:58,692 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:52:58,722 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:52:58,723 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:52:58,723 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:52:58,723 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:52:58,723 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:52:58,723 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:52:58,724 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:52:58,724 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:52:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-10-27 04:52:58,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 04:52:58,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:52:58,762 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] [2020-10-27 04:52:58,762 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:52:58,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:52:58,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1796081780, now seen corresponding path program 1 times [2020-10-27 04:52:58,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:52:58,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709936717] [2020-10-27 04:52:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:52:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:52:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:59,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:52:59,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:00,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:00,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:00,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:00,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:02,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:03,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:04,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:04,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:53:04,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:53:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 04:53:04,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:04,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:04,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:04,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:53:04,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 04:53:04,800 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:53:04,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:04,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:04,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:04,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:04,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:04,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:53:04,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:04,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:04,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:53:04,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709936717] [2020-10-27 04:53:04,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:04,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:04,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030960969] [2020-10-27 04:53:04,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:04,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:04,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:04,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:04,934 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 5 states. [2020-10-27 04:53:07,036 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:53:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:07,924 INFO L93 Difference]: Finished difference Result 706 states and 1253 transitions. [2020-10-27 04:53:07,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:53:07,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-27 04:53:07,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:07,944 INFO L225 Difference]: With dead ends: 706 [2020-10-27 04:53:07,944 INFO L226 Difference]: Without dead ends: 469 [2020-10-27 04:53:07,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:07,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-10-27 04:53:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 450. [2020-10-27 04:53:08,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-27 04:53:08,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 655 transitions. [2020-10-27 04:53:08,090 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 655 transitions. Word has length 97 [2020-10-27 04:53:08,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:08,091 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 655 transitions. [2020-10-27 04:53:08,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 655 transitions. [2020-10-27 04:53:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 04:53:08,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:08,097 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] [2020-10-27 04:53:08,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:53:08,098 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:08,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:08,099 INFO L82 PathProgramCache]: Analyzing trace with hash -364512838, now seen corresponding path program 1 times [2020-10-27 04:53:08,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:08,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891246299] [2020-10-27 04:53:08,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:08,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:08,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:08,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:08,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:08,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:08,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:11,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:11,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:13,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:13,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 04:53:13,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:53:13,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 04:53:13,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:13,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:13,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:13,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:53:13,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:13,629 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:53:13,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:13,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:13,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:13,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:13,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:13,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:53:13,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:13,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:13,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:13,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:53:13,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891246299] [2020-10-27 04:53:13,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:13,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:13,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957140562] [2020-10-27 04:53:13,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:13,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:13,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:13,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:13,707 INFO L87 Difference]: Start difference. First operand 450 states and 655 transitions. Second operand 5 states. [2020-10-27 04:53:15,286 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:53:16,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:16,260 INFO L93 Difference]: Finished difference Result 1270 states and 1835 transitions. [2020-10-27 04:53:16,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:16,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-27 04:53:16,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:16,268 INFO L225 Difference]: With dead ends: 1270 [2020-10-27 04:53:16,269 INFO L226 Difference]: Without dead ends: 853 [2020-10-27 04:53:16,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:16,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-10-27 04:53:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 823. [2020-10-27 04:53:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2020-10-27 04:53:16,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1184 transitions. [2020-10-27 04:53:16,360 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1184 transitions. Word has length 98 [2020-10-27 04:53:16,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:16,360 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1184 transitions. [2020-10-27 04:53:16,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:16,360 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1184 transitions. [2020-10-27 04:53:16,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 04:53:16,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:16,368 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] [2020-10-27 04:53:16,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:53:16,368 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:16,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:16,369 INFO L82 PathProgramCache]: Analyzing trace with hash 936764785, now seen corresponding path program 1 times [2020-10-27 04:53:16,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:16,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790259889] [2020-10-27 04:53:16,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:16,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:16,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:16,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:16,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:16,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:16,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:18,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:19,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:21,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:21,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 04:53:21,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:53:21,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:53:21,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:53:21,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:21,813 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:53:21,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:21,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:21,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:21,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:21,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:21,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:53:21,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:21,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:53:21,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790259889] [2020-10-27 04:53:21,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:21,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:21,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026065714] [2020-10-27 04:53:21,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:21,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:21,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:21,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:21,874 INFO L87 Difference]: Start difference. First operand 823 states and 1184 transitions. Second operand 5 states. [2020-10-27 04:53:23,469 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:53:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:24,495 INFO L93 Difference]: Finished difference Result 2379 states and 3411 transitions. [2020-10-27 04:53:24,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:24,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-27 04:53:24,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:24,514 INFO L225 Difference]: With dead ends: 2379 [2020-10-27 04:53:24,514 INFO L226 Difference]: Without dead ends: 1590 [2020-10-27 04:53:24,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:24,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2020-10-27 04:53:24,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1568. [2020-10-27 04:53:24,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2020-10-27 04:53:24,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2231 transitions. [2020-10-27 04:53:24,633 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2231 transitions. Word has length 99 [2020-10-27 04:53:24,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:24,635 INFO L481 AbstractCegarLoop]: Abstraction has 1568 states and 2231 transitions. [2020-10-27 04:53:24,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:24,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2231 transitions. [2020-10-27 04:53:24,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 04:53:24,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:24,658 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] [2020-10-27 04:53:24,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:53:24,659 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:24,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:24,660 INFO L82 PathProgramCache]: Analyzing trace with hash 835423644, now seen corresponding path program 1 times [2020-10-27 04:53:24,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:24,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224836525] [2020-10-27 04:53:24,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:24,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:24,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:24,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:26,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:27,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:27,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:29,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:29,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:29,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:29,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 04:53:29,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 04:53:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 04:53:29,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 04:53:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:30,321 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:53:30,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:30,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:30,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:30,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:30,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:30,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:53:30,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:30,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:30,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:30,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:53:30,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224836525] [2020-10-27 04:53:30,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:30,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:30,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315888407] [2020-10-27 04:53:30,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:30,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:30,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:30,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:30,409 INFO L87 Difference]: Start difference. First operand 1568 states and 2231 transitions. Second operand 5 states. [2020-10-27 04:53:31,979 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:53:33,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:33,091 INFO L93 Difference]: Finished difference Result 3992 states and 5747 transitions. [2020-10-27 04:53:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:33,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-27 04:53:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:33,107 INFO L225 Difference]: With dead ends: 3992 [2020-10-27 04:53:33,108 INFO L226 Difference]: Without dead ends: 3004 [2020-10-27 04:53:33,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:33,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2020-10-27 04:53:33,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 2968. [2020-10-27 04:53:33,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2968 states. [2020-10-27 04:53:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 4177 transitions. [2020-10-27 04:53:33,321 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 4177 transitions. Word has length 100 [2020-10-27 04:53:33,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:33,321 INFO L481 AbstractCegarLoop]: Abstraction has 2968 states and 4177 transitions. [2020-10-27 04:53:33,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:33,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 4177 transitions. [2020-10-27 04:53:33,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 04:53:33,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:33,327 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] [2020-10-27 04:53:33,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:53:33,328 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:33,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:33,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1267385361, now seen corresponding path program 1 times [2020-10-27 04:53:33,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:33,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908164563] [2020-10-27 04:53:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:33,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:33,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:33,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:33,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:36,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:38,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:38,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 04:53:38,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:53:38,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:53:38,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:38,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:38,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:38,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:53:38,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:38,794 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:53:38,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:38,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:38,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:38,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:38,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:38,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:53:38,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:38,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:38,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:38,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:38,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:53:38,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908164563] [2020-10-27 04:53:38,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:38,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:38,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719677374] [2020-10-27 04:53:38,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:38,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:38,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:38,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:38,866 INFO L87 Difference]: Start difference. First operand 2968 states and 4177 transitions. Second operand 5 states. [2020-10-27 04:53:40,426 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:53:41,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:41,535 INFO L93 Difference]: Finished difference Result 8573 states and 12003 transitions. [2020-10-27 04:53:41,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:41,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-27 04:53:41,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:41,565 INFO L225 Difference]: With dead ends: 8573 [2020-10-27 04:53:41,565 INFO L226 Difference]: Without dead ends: 5663 [2020-10-27 04:53:41,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:41,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5663 states. [2020-10-27 04:53:41,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5663 to 5651. [2020-10-27 04:53:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5651 states. [2020-10-27 04:53:42,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5651 states to 5651 states and 7828 transitions. [2020-10-27 04:53:42,015 INFO L78 Accepts]: Start accepts. Automaton has 5651 states and 7828 transitions. Word has length 101 [2020-10-27 04:53:42,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:42,017 INFO L481 AbstractCegarLoop]: Abstraction has 5651 states and 7828 transitions. [2020-10-27 04:53:42,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:42,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5651 states and 7828 transitions. [2020-10-27 04:53:42,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 04:53:42,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:42,026 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] [2020-10-27 04:53:42,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:53:42,027 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:42,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:42,027 INFO L82 PathProgramCache]: Analyzing trace with hash 355638621, now seen corresponding path program 1 times [2020-10-27 04:53:42,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:42,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544794569] [2020-10-27 04:53:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:42,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:42,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:42,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:42,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:42,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:42,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:47,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:47,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 04:53:47,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:53:47,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 04:53:47,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:47,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:47,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:53:47,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 04:53:47,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:47,463 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:53:47,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:47,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:47,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:47,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:47,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:47,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:53:47,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:47,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:53:47,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544794569] [2020-10-27 04:53:47,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:47,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:47,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379958225] [2020-10-27 04:53:47,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:47,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:47,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:47,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:47,526 INFO L87 Difference]: Start difference. First operand 5651 states and 7828 transitions. Second operand 5 states. [2020-10-27 04:53:49,208 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:53:50,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:50,491 INFO L93 Difference]: Finished difference Result 16478 states and 22759 transitions. [2020-10-27 04:53:50,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:53:50,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-27 04:53:50,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:50,550 INFO L225 Difference]: With dead ends: 16478 [2020-10-27 04:53:50,550 INFO L226 Difference]: Without dead ends: 10843 [2020-10-27 04:53:50,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:53:50,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10843 states. [2020-10-27 04:53:51,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10843 to 10828. [2020-10-27 04:53:51,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10828 states. [2020-10-27 04:53:51,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10828 states to 10828 states and 14802 transitions. [2020-10-27 04:53:51,332 INFO L78 Accepts]: Start accepts. Automaton has 10828 states and 14802 transitions. Word has length 102 [2020-10-27 04:53:51,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:51,332 INFO L481 AbstractCegarLoop]: Abstraction has 10828 states and 14802 transitions. [2020-10-27 04:53:51,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:51,332 INFO L276 IsEmpty]: Start isEmpty. Operand 10828 states and 14802 transitions. [2020-10-27 04:53:51,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 04:53:51,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:51,350 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] [2020-10-27 04:53:51,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:53:51,350 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:51,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:51,351 INFO L82 PathProgramCache]: Analyzing trace with hash -376659663, now seen corresponding path program 1 times [2020-10-27 04:53:51,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:51,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957724688] [2020-10-27 04:53:51,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:51,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:51,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:51,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:51,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:51,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:51,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:56,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:56,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 04:53:56,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:53:56,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:53:56,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:56,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:53:56,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 04:53:56,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 04:53:56,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:56,829 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:53:56,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:53:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:56,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:56,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:53:56,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:53:56,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:53:56,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:53:56,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:53:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:53:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:53:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:53:56,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:53:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:53:56,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957724688] [2020-10-27 04:53:56,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:53:56,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:53:56,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451468756] [2020-10-27 04:53:56,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:53:56,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:53:56,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:53:56,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:53:56,894 INFO L87 Difference]: Start difference. First operand 10828 states and 14802 transitions. Second operand 5 states. [2020-10-27 04:53:58,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:53:58,595 INFO L93 Difference]: Finished difference Result 17414 states and 23858 transitions. [2020-10-27 04:53:58,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:53:58,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-27 04:53:58,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:53:58,631 INFO L225 Difference]: With dead ends: 17414 [2020-10-27 04:53:58,631 INFO L226 Difference]: Without dead ends: 6984 [2020-10-27 04:53:58,654 INFO L677 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 [2020-10-27 04:53:58,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6984 states. [2020-10-27 04:53:59,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6984 to 6984. [2020-10-27 04:53:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6984 states. [2020-10-27 04:53:59,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6984 states to 6984 states and 9496 transitions. [2020-10-27 04:53:59,108 INFO L78 Accepts]: Start accepts. Automaton has 6984 states and 9496 transitions. Word has length 103 [2020-10-27 04:53:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:53:59,108 INFO L481 AbstractCegarLoop]: Abstraction has 6984 states and 9496 transitions. [2020-10-27 04:53:59,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:53:59,109 INFO L276 IsEmpty]: Start isEmpty. Operand 6984 states and 9496 transitions. [2020-10-27 04:53:59,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-27 04:53:59,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:53:59,120 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] [2020-10-27 04:53:59,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:53:59,121 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:53:59,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:53:59,121 INFO L82 PathProgramCache]: Analyzing trace with hash 2032555192, now seen corresponding path program 1 times [2020-10-27 04:53:59,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:53:59,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593564008] [2020-10-27 04:53:59,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:53:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:53:59,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:59,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:59,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:59,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:53:59,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:04,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:04,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 04:54:04,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:54:04,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:54:04,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:54:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 04:54:04,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:04,527 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:54:04,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:04,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:04,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:04,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:04,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:04,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:54:04,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:04,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:04,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:04,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:04,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:54:04,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593564008] [2020-10-27 04:54:04,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:04,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:04,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653332930] [2020-10-27 04:54:04,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:04,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:04,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:04,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:04,574 INFO L87 Difference]: Start difference. First operand 6984 states and 9496 transitions. Second operand 5 states. [2020-10-27 04:54:06,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:06,021 INFO L93 Difference]: Finished difference Result 10742 states and 14725 transitions. [2020-10-27 04:54:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:54:06,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-27 04:54:06,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:06,036 INFO L225 Difference]: With dead ends: 10742 [2020-10-27 04:54:06,036 INFO L226 Difference]: Without dead ends: 5677 [2020-10-27 04:54:06,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:54:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5677 states. [2020-10-27 04:54:06,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5677 to 5677. [2020-10-27 04:54:06,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5677 states. [2020-10-27 04:54:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 7700 transitions. [2020-10-27 04:54:06,462 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 7700 transitions. Word has length 107 [2020-10-27 04:54:06,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:06,463 INFO L481 AbstractCegarLoop]: Abstraction has 5677 states and 7700 transitions. [2020-10-27 04:54:06,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:06,463 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 7700 transitions. [2020-10-27 04:54:06,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 04:54:06,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:06,474 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] [2020-10-27 04:54:06,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:54:06,474 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:06,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:06,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1942350171, now seen corresponding path program 1 times [2020-10-27 04:54:06,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:06,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808381763] [2020-10-27 04:54:06,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:06,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:06,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:06,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:06,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:09,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:09,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:09,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:11,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:11,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 04:54:11,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:54:11,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 04:54:11,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:54:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:54:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:54:11,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:11,903 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:54:11,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:11,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:11,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:11,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:11,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:54:11,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:54:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:54:11,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:54:11,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808381763] [2020-10-27 04:54:11,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:11,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:11,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950815706] [2020-10-27 04:54:11,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:54:11,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:11,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:54:11,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:54:11,980 INFO L87 Difference]: Start difference. First operand 5677 states and 7700 transitions. Second operand 6 states. [2020-10-27 04:54:12,342 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:54:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:13,699 INFO L93 Difference]: Finished difference Result 10073 states and 13978 transitions. [2020-10-27 04:54:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:54:13,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-10-27 04:54:13,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:13,712 INFO L225 Difference]: With dead ends: 10073 [2020-10-27 04:54:13,712 INFO L226 Difference]: Without dead ends: 5677 [2020-10-27 04:54:13,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:54:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5677 states. [2020-10-27 04:54:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5677 to 5677. [2020-10-27 04:54:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5677 states. [2020-10-27 04:54:14,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 7604 transitions. [2020-10-27 04:54:14,111 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 7604 transitions. Word has length 109 [2020-10-27 04:54:14,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:14,111 INFO L481 AbstractCegarLoop]: Abstraction has 5677 states and 7604 transitions. [2020-10-27 04:54:14,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:54:14,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 7604 transitions. [2020-10-27 04:54:14,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 04:54:14,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:14,120 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] [2020-10-27 04:54:14,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:54:14,120 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:14,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1981776032, now seen corresponding path program 1 times [2020-10-27 04:54:14,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:14,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843824263] [2020-10-27 04:54:14,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:14,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:19,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:19,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 04:54:19,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:54:19,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:54:19,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:19,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:54:19,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:54:19,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:54:19,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:19,558 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:54:19,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:19,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:19,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:19,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:19,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:19,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:54:19,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:19,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:19,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:19,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:54:19,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843824263] [2020-10-27 04:54:19,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:19,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:19,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393750973] [2020-10-27 04:54:19,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:54:19,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:19,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:54:19,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:54:19,604 INFO L87 Difference]: Start difference. First operand 5677 states and 7604 transitions. Second operand 5 states. [2020-10-27 04:54:21,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:21,015 INFO L93 Difference]: Finished difference Result 9137 states and 12306 transitions. [2020-10-27 04:54:21,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:54:21,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-27 04:54:21,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:21,025 INFO L225 Difference]: With dead ends: 9137 [2020-10-27 04:54:21,025 INFO L226 Difference]: Without dead ends: 3848 [2020-10-27 04:54:21,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:54:21,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3848 states. [2020-10-27 04:54:21,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3848 to 3848. [2020-10-27 04:54:21,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3848 states. [2020-10-27 04:54:21,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 5132 transitions. [2020-10-27 04:54:21,320 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 5132 transitions. Word has length 109 [2020-10-27 04:54:21,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:21,320 INFO L481 AbstractCegarLoop]: Abstraction has 3848 states and 5132 transitions. [2020-10-27 04:54:21,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:54:21,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 5132 transitions. [2020-10-27 04:54:21,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 04:54:21,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:21,326 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] [2020-10-27 04:54:21,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:54:21,327 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:21,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:21,327 INFO L82 PathProgramCache]: Analyzing trace with hash 840895709, now seen corresponding path program 1 times [2020-10-27 04:54:21,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:21,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596839720] [2020-10-27 04:54:21,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:21,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:21,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:21,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:21,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:24,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:25,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:26,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:26,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:54:26,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:54:26,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 04:54:26,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:26,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:54:26,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:54:26,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 04:54:26,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:26,864 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:54:26,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:26,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:26,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:26,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:26,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:54:26,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:54:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:54:26,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:54:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:54:26,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596839720] [2020-10-27 04:54:26,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:26,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:54:26,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883387764] [2020-10-27 04:54:26,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:54:26,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:26,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:54:26,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:54:26,943 INFO L87 Difference]: Start difference. First operand 3848 states and 5132 transitions. Second operand 11 states. [2020-10-27 04:54:27,373 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:54:29,013 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 04:54:29,391 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 04:54:30,985 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 04:54:31,384 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 04:54:32,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:32,170 INFO L93 Difference]: Finished difference Result 17357 states and 25539 transitions. [2020-10-27 04:54:32,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 04:54:32,171 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2020-10-27 04:54:32,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:32,208 INFO L225 Difference]: With dead ends: 17357 [2020-10-27 04:54:32,208 INFO L226 Difference]: Without dead ends: 15217 [2020-10-27 04:54:32,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-27 04:54:32,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15217 states. [2020-10-27 04:54:32,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15217 to 4966. [2020-10-27 04:54:32,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4966 states. [2020-10-27 04:54:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 6696 transitions. [2020-10-27 04:54:32,879 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 6696 transitions. Word has length 113 [2020-10-27 04:54:32,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:32,880 INFO L481 AbstractCegarLoop]: Abstraction has 4966 states and 6696 transitions. [2020-10-27 04:54:32,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:54:32,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 6696 transitions. [2020-10-27 04:54:32,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 04:54:32,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:32,885 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] [2020-10-27 04:54:32,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:54:32,885 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:32,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:32,886 INFO L82 PathProgramCache]: Analyzing trace with hash 586980382, now seen corresponding path program 1 times [2020-10-27 04:54:32,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:32,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663624433] [2020-10-27 04:54:32,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:32,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:32,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:33,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:35,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:35,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:54:35,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:54:35,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2168 [2020-10-27 04:54:35,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:54:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:54:35,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:54:35,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:35,489 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:54:35,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:35,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:35,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:35,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:35,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:35,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:54:35,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:35,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:54:35,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:35,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:54:35,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:54:35,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663624433] [2020-10-27 04:54:35,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:35,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:54:35,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919208582] [2020-10-27 04:54:35,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:54:35,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:35,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:54:35,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:54:35,545 INFO L87 Difference]: Start difference. First operand 4966 states and 6696 transitions. Second operand 6 states. [2020-10-27 04:54:35,946 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:54:37,135 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 04:54:38,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:38,139 INFO L93 Difference]: Finished difference Result 10689 states and 15246 transitions. [2020-10-27 04:54:38,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:54:38,139 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-27 04:54:38,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:38,149 INFO L225 Difference]: With dead ends: 10689 [2020-10-27 04:54:38,150 INFO L226 Difference]: Without dead ends: 7005 [2020-10-27 04:54:38,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:54:38,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7005 states. [2020-10-27 04:54:38,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7005 to 6967. [2020-10-27 04:54:38,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6967 states. [2020-10-27 04:54:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6967 states to 6967 states and 9885 transitions. [2020-10-27 04:54:38,827 INFO L78 Accepts]: Start accepts. Automaton has 6967 states and 9885 transitions. Word has length 113 [2020-10-27 04:54:38,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:38,827 INFO L481 AbstractCegarLoop]: Abstraction has 6967 states and 9885 transitions. [2020-10-27 04:54:38,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:54:38,827 INFO L276 IsEmpty]: Start isEmpty. Operand 6967 states and 9885 transitions. [2020-10-27 04:54:38,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 04:54:38,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:38,832 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] [2020-10-27 04:54:38,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:54:38,832 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:38,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:38,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1333791768, now seen corresponding path program 1 times [2020-10-27 04:54:38,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:38,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471790852] [2020-10-27 04:54:38,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:38,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:38,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:39,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:39,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:39,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:41,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:43,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:43,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:54:43,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:54:43,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 04:54:43,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:43,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:54:43,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:54:43,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 04:54:43,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:44,560 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:54:44,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:44,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:44,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:44,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:44,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:44,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:54:44,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:44,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:44,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:44,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:44,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:54:44,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471790852] [2020-10-27 04:54:44,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:44,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:54:44,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548027419] [2020-10-27 04:54:44,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:54:44,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:44,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:54:44,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:54:44,622 INFO L87 Difference]: Start difference. First operand 6967 states and 9885 transitions. Second operand 12 states. [2020-10-27 04:54:44,766 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2020-10-27 04:54:45,654 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 235 [2020-10-27 04:54:46,292 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-10-27 04:54:46,452 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2020-10-27 04:54:47,895 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 04:54:48,276 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:54:50,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:54:50,043 INFO L93 Difference]: Finished difference Result 16108 states and 23610 transitions. [2020-10-27 04:54:50,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:54:50,044 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-10-27 04:54:50,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:54:50,060 INFO L225 Difference]: With dead ends: 16108 [2020-10-27 04:54:50,061 INFO L226 Difference]: Without dead ends: 13176 [2020-10-27 04:54:50,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:54:50,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13176 states. [2020-10-27 04:54:50,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13176 to 7597. [2020-10-27 04:54:50,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7597 states. [2020-10-27 04:54:50,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7597 states to 7597 states and 10619 transitions. [2020-10-27 04:54:50,933 INFO L78 Accepts]: Start accepts. Automaton has 7597 states and 10619 transitions. Word has length 113 [2020-10-27 04:54:50,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:54:50,933 INFO L481 AbstractCegarLoop]: Abstraction has 7597 states and 10619 transitions. [2020-10-27 04:54:50,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:54:50,933 INFO L276 IsEmpty]: Start isEmpty. Operand 7597 states and 10619 transitions. [2020-10-27 04:54:50,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 04:54:50,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:54:50,938 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] [2020-10-27 04:54:50,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:54:50,938 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:54:50,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:54:50,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2119657497, now seen corresponding path program 1 times [2020-10-27 04:54:50,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:54:50,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351779839] [2020-10-27 04:54:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:54:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:50,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:51,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:51,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:51,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:55,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:55,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:54:55,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:54:55,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4147 [2020-10-27 04:54:55,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:55,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:54:55,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:54:55,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 04:54:55,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:55,698 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:54:55,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:54:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:54:55,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:54:55,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:54:55,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:54:55,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:54:55,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:54:55,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:54:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:54:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:54:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:54:55,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:54:55,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:54:55,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351779839] [2020-10-27 04:54:55,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:54:55,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:54:55,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584187246] [2020-10-27 04:54:55,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:54:55,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:54:55,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:54:55,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:54:55,753 INFO L87 Difference]: Start difference. First operand 7597 states and 10619 transitions. Second operand 11 states. [2020-10-27 04:54:56,163 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:54:58,170 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 04:54:58,549 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 04:54:58,913 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-27 04:54:59,353 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-27 04:54:59,705 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-27 04:55:00,086 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-27 04:55:00,442 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 04:55:04,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:04,325 INFO L93 Difference]: Finished difference Result 29689 states and 45360 transitions. [2020-10-27 04:55:04,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 04:55:04,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2020-10-27 04:55:04,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:04,361 INFO L225 Difference]: With dead ends: 29689 [2020-10-27 04:55:04,362 INFO L226 Difference]: Without dead ends: 25304 [2020-10-27 04:55:04,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:55:04,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25304 states. [2020-10-27 04:55:05,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25304 to 11958. [2020-10-27 04:55:05,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11958 states. [2020-10-27 04:55:05,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11958 states to 11958 states and 17468 transitions. [2020-10-27 04:55:05,975 INFO L78 Accepts]: Start accepts. Automaton has 11958 states and 17468 transitions. Word has length 113 [2020-10-27 04:55:05,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:05,975 INFO L481 AbstractCegarLoop]: Abstraction has 11958 states and 17468 transitions. [2020-10-27 04:55:05,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:55:05,975 INFO L276 IsEmpty]: Start isEmpty. Operand 11958 states and 17468 transitions. [2020-10-27 04:55:05,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 04:55:05,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:05,980 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] [2020-10-27 04:55:05,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:55:05,980 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:05,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:05,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1079876441, now seen corresponding path program 1 times [2020-10-27 04:55:05,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:05,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127565457] [2020-10-27 04:55:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:06,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:06,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:06,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:55:06,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:55:06,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 750 [2020-10-27 04:55:06,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:06,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:55:06,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 04:55:06,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 04:55:06,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:07,169 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:55:07,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:07,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:07,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:07,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:07,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:07,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:55:07,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:07,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:55:07,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:07,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:55:07,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:55:07,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127565457] [2020-10-27 04:55:07,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:07,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:07,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665425648] [2020-10-27 04:55:07,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:55:07,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:07,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:55:07,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:55:07,304 INFO L87 Difference]: Start difference. First operand 11958 states and 17468 transitions. Second operand 5 states. [2020-10-27 04:55:09,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:09,747 INFO L93 Difference]: Finished difference Result 20205 states and 29517 transitions. [2020-10-27 04:55:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:55:09,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-27 04:55:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:09,761 INFO L225 Difference]: With dead ends: 20205 [2020-10-27 04:55:09,761 INFO L226 Difference]: Without dead ends: 10235 [2020-10-27 04:55:09,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:55:09,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10235 states. [2020-10-27 04:55:11,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10235 to 10235. [2020-10-27 04:55:11,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10235 states. [2020-10-27 04:55:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10235 states to 10235 states and 14909 transitions. [2020-10-27 04:55:11,053 INFO L78 Accepts]: Start accepts. Automaton has 10235 states and 14909 transitions. Word has length 113 [2020-10-27 04:55:11,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:11,053 INFO L481 AbstractCegarLoop]: Abstraction has 10235 states and 14909 transitions. [2020-10-27 04:55:11,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:55:11,053 INFO L276 IsEmpty]: Start isEmpty. Operand 10235 states and 14909 transitions. [2020-10-27 04:55:11,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:55:11,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:11,057 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] [2020-10-27 04:55:11,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:55:11,057 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:11,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:11,058 INFO L82 PathProgramCache]: Analyzing trace with hash -991281650, now seen corresponding path program 1 times [2020-10-27 04:55:11,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:11,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344242545] [2020-10-27 04:55:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:11,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:11,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:11,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:11,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:11,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:11,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:12,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:16,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:16,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:16,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 04:55:16,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 04:55:16,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 04:55:16,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:55:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:55:16,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 04:55:16,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:16,622 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:55:16,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:16,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:16,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:16,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:16,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:16,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:55:16,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:16,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:55:16,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:16,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:55:16,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:55:16,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344242545] [2020-10-27 04:55:16,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:16,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:55:16,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686454289] [2020-10-27 04:55:16,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:55:16,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:16,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:55:16,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:55:16,690 INFO L87 Difference]: Start difference. First operand 10235 states and 14909 transitions. Second operand 11 states. [2020-10-27 04:55:17,140 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 04:55:19,574 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 206 [2020-10-27 04:55:20,359 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 204 [2020-10-27 04:55:23,195 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 204 [2020-10-27 04:55:23,952 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 202 [2020-10-27 04:55:29,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:29,832 INFO L93 Difference]: Finished difference Result 53654 states and 81598 transitions. [2020-10-27 04:55:29,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 04:55:29,833 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 114 [2020-10-27 04:55:29,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:29,900 INFO L225 Difference]: With dead ends: 53654 [2020-10-27 04:55:29,900 INFO L226 Difference]: Without dead ends: 47835 [2020-10-27 04:55:29,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=315, Invalid=807, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 04:55:29,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47835 states. [2020-10-27 04:55:32,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47835 to 12607. [2020-10-27 04:55:32,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12607 states. [2020-10-27 04:55:32,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12607 states to 12607 states and 18642 transitions. [2020-10-27 04:55:32,121 INFO L78 Accepts]: Start accepts. Automaton has 12607 states and 18642 transitions. Word has length 114 [2020-10-27 04:55:32,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:32,121 INFO L481 AbstractCegarLoop]: Abstraction has 12607 states and 18642 transitions. [2020-10-27 04:55:32,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:55:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 12607 states and 18642 transitions. [2020-10-27 04:55:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:55:32,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:32,126 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] [2020-10-27 04:55:32,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:55:32,126 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:32,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:32,127 INFO L82 PathProgramCache]: Analyzing trace with hash -262398184, now seen corresponding path program 1 times [2020-10-27 04:55:32,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:32,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483392732] [2020-10-27 04:55:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:32,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:32,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:32,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:32,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:32,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:32,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:34,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:34,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 04:55:34,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:55:34,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2009 [2020-10-27 04:55:34,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:55:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:55:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 04:55:34,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:34,521 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:55:34,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:34,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:34,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:34,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:34,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:34,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:55:34,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:55:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:34,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:55:34,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:55:34,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483392732] [2020-10-27 04:55:34,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:34,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:34,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385425875] [2020-10-27 04:55:34,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:55:34,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:34,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:55:34,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:55:34,571 INFO L87 Difference]: Start difference. First operand 12607 states and 18642 transitions. Second operand 6 states. [2020-10-27 04:55:34,978 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:55:38,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:38,224 INFO L93 Difference]: Finished difference Result 23652 states and 35498 transitions. [2020-10-27 04:55:38,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:55:38,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-27 04:55:38,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:38,241 INFO L225 Difference]: With dead ends: 23652 [2020-10-27 04:55:38,241 INFO L226 Difference]: Without dead ends: 12607 [2020-10-27 04:55:38,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:55:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12607 states. [2020-10-27 04:55:40,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12607 to 12607. [2020-10-27 04:55:40,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12607 states. [2020-10-27 04:55:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12607 states to 12607 states and 18417 transitions. [2020-10-27 04:55:40,349 INFO L78 Accepts]: Start accepts. Automaton has 12607 states and 18417 transitions. Word has length 114 [2020-10-27 04:55:40,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:40,349 INFO L481 AbstractCegarLoop]: Abstraction has 12607 states and 18417 transitions. [2020-10-27 04:55:40,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:55:40,349 INFO L276 IsEmpty]: Start isEmpty. Operand 12607 states and 18417 transitions. [2020-10-27 04:55:40,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 04:55:40,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:40,354 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] [2020-10-27 04:55:40,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:55:40,354 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:40,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:40,354 INFO L82 PathProgramCache]: Analyzing trace with hash 389399571, now seen corresponding path program 1 times [2020-10-27 04:55:40,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:40,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329804540] [2020-10-27 04:55:40,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:40,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:40,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:40,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:40,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:40,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:40,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:40,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:42,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:43,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:45,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:45,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 04:55:45,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:55:45,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:55:45,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:45,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:55:45,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:55:45,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 04:55:45,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:45,793 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 04:55:45,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:55:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:45,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:45,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:55:45,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:55:45,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:55:45,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:55:45,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:55:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:55:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:55:45,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:55:45,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:55:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:55:45,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329804540] [2020-10-27 04:55:45,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:55:45,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:55:45,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626757254] [2020-10-27 04:55:45,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:55:45,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:55:45,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:55:45,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:55:45,833 INFO L87 Difference]: Start difference. First operand 12607 states and 18417 transitions. Second operand 5 states. [2020-10-27 04:55:49,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:55:49,759 INFO L93 Difference]: Finished difference Result 20683 states and 30281 transitions. [2020-10-27 04:55:49,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:55:49,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-27 04:55:49,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:55:49,775 INFO L225 Difference]: With dead ends: 20683 [2020-10-27 04:55:49,775 INFO L226 Difference]: Without dead ends: 12648 [2020-10-27 04:55:49,784 INFO L677 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 [2020-10-27 04:55:49,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12648 states. [2020-10-27 04:55:51,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12648 to 12597. [2020-10-27 04:55:51,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12597 states. [2020-10-27 04:55:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12597 states to 12597 states and 18399 transitions. [2020-10-27 04:55:51,753 INFO L78 Accepts]: Start accepts. Automaton has 12597 states and 18399 transitions. Word has length 114 [2020-10-27 04:55:51,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:55:51,753 INFO L481 AbstractCegarLoop]: Abstraction has 12597 states and 18399 transitions. [2020-10-27 04:55:51,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:55:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand 12597 states and 18399 transitions. [2020-10-27 04:55:51,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 04:55:51,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:51,758 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] [2020-10-27 04:55:51,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:55:51,758 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:51,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:51,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1482394508, now seen corresponding path program 1 times [2020-10-27 04:55:51,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:51,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417604096] [2020-10-27 04:55:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 04:55:51,795 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 04:55:51,795 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 04:55:51,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:55:51,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:55:51 BoogieIcfgContainer [2020-10-27 04:55:51,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 04:55:51,865 INFO L168 Benchmark]: Toolchain (without parser) took 175605.37 ms. Allocated memory was 153.1 MB in the beginning and 2.5 GB in the end (delta: 2.4 GB). Free memory was 128.3 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 698.0 MB. Max. memory is 8.0 GB. [2020-10-27 04:55:51,865 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 153.1 MB. Free memory was 127.6 MB in the beginning and 127.5 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 04:55:51,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 909.83 ms. Allocated memory is still 153.1 MB. Free memory was 127.6 MB in the beginning and 135.7 MB in the end (delta: -8.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 8.0 GB. [2020-10-27 04:55:51,868 INFO L168 Benchmark]: Boogie Preprocessor took 168.43 ms. Allocated memory is still 153.1 MB. Free memory was 135.7 MB in the beginning and 131.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-27 04:55:51,869 INFO L168 Benchmark]: RCFGBuilder took 1301.38 ms. Allocated memory is still 153.1 MB. Free memory was 131.9 MB in the beginning and 116.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 85.4 MB. Max. memory is 8.0 GB. [2020-10-27 04:55:51,869 INFO L168 Benchmark]: TraceAbstraction took 173211.11 ms. Allocated memory was 153.1 MB in the beginning and 2.5 GB in the end (delta: 2.4 GB). Free memory was 116.2 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 685.4 MB. Max. memory is 8.0 GB. [2020-10-27 04:55:51,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 153.1 MB. Free memory was 127.6 MB in the beginning and 127.5 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 909.83 ms. Allocated memory is still 153.1 MB. Free memory was 127.6 MB in the beginning and 135.7 MB in the end (delta: -8.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 168.43 ms. Allocated memory is still 153.1 MB. Free memory was 135.7 MB in the beginning and 131.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1301.38 ms. Allocated memory is still 153.1 MB. Free memory was 131.9 MB in the beginning and 116.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 85.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 173211.11 ms. Allocated memory was 153.1 MB in the beginning and 2.5 GB in the end (delta: 2.4 GB). Free memory was 116.2 MB in the beginning and 1.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 685.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L17] msg_t nomsg = (msg_t )-1; [L18] port_t p12 = 0; [L19] char p12_old = '\x0'; [L20] char p12_new = '\x0'; [L21] _Bool ep12 = 0; [L22] port_t p13 = 0; [L23] char p13_old = '\x0'; [L24] char p13_new = '\x0'; [L25] _Bool ep13 = 0; [L26] port_t p21 = 0; [L27] char p21_old = '\x0'; [L28] char p21_new = '\x0'; [L29] _Bool ep21 = 0; [L30] port_t p23 = 0; [L31] char p23_old = '\x0'; [L32] char p23_new = '\x0'; [L33] _Bool ep23 = 0; [L34] port_t p31 = 0; [L35] char p31_old = '\x0'; [L36] char p31_new = '\x0'; [L37] _Bool ep31 = 0; [L38] port_t p32 = 0; [L39] char p32_old = '\x0'; [L40] char p32_new = '\x0'; [L41] _Bool ep32 = 0; [L42] char id1 = '\x0'; [L43] unsigned char r1 = '\x0'; [L44] char st1 = '\x0'; [L45] char nl1 = '\x0'; [L46] char m1 = '\x0'; [L47] char max1 = '\x0'; [L48] _Bool mode1 = 0; [L49] char id2 = '\x0'; [L50] unsigned char r2 = '\x0'; [L51] char st2 = '\x0'; [L52] char nl2 = '\x0'; [L53] char m2 = '\x0'; [L54] char max2 = '\x0'; [L55] _Bool mode2 = 0; [L56] char id3 = '\x0'; [L57] unsigned char r3 = '\x0'; [L58] char st3 = '\x0'; [L59] char nl3 = '\x0'; [L60] char m3 = '\x0'; [L61] char max3 = '\x0'; [L62] _Bool mode3 = 0; [L66] void (*nodes[3])() = { &node1, &node2, &node3 }; [L70] int __return_1142; [L71] int __return_1270; [L72] int __return_1696; [L73] int __return_1389; [L74] int __return_1499; [L77] int main__c1; [L78] int main__i2; [L79] main__c1 = 0 [L80] ep12 = __VERIFIER_nondet_bool() [L81] ep13 = __VERIFIER_nondet_bool() [L82] ep21 = __VERIFIER_nondet_bool() [L83] ep23 = __VERIFIER_nondet_bool() [L84] ep31 = __VERIFIER_nondet_bool() [L85] ep32 = __VERIFIER_nondet_bool() [L86] id1 = __VERIFIER_nondet_char() [L87] r1 = __VERIFIER_nondet_uchar() [L88] st1 = __VERIFIER_nondet_char() [L89] nl1 = __VERIFIER_nondet_char() [L90] m1 = __VERIFIER_nondet_char() [L91] max1 = __VERIFIER_nondet_char() [L92] mode1 = __VERIFIER_nondet_bool() [L93] id2 = __VERIFIER_nondet_char() [L94] r2 = __VERIFIER_nondet_uchar() [L95] st2 = __VERIFIER_nondet_char() [L96] nl2 = __VERIFIER_nondet_char() [L97] m2 = __VERIFIER_nondet_char() [L98] max2 = __VERIFIER_nondet_char() [L99] mode2 = __VERIFIER_nondet_bool() [L100] id3 = __VERIFIER_nondet_char() [L101] r3 = __VERIFIER_nondet_uchar() [L102] st3 = __VERIFIER_nondet_char() [L103] nl3 = __VERIFIER_nondet_char() [L104] m3 = __VERIFIER_nondet_char() [L105] max3 = __VERIFIER_nondet_char() [L106] mode3 = __VERIFIER_nondet_bool() [L108] _Bool init__r121; [L109] _Bool init__r131; [L110] _Bool init__r211; [L111] _Bool init__r231; [L112] _Bool init__r311; [L113] _Bool init__r321; [L114] _Bool init__r122; [L115] int init__tmp; [L116] _Bool init__r132; [L117] int init__tmp___0; [L118] _Bool init__r212; [L119] int init__tmp___1; [L120] _Bool init__r232; [L121] int init__tmp___2; [L122] _Bool init__r312; [L123] int init__tmp___3; [L124] _Bool init__r322; [L125] int init__tmp___4; [L126] int init__tmp___5; [L127] init__r121 = ep12 [L128] init__r131 = ep13 [L129] init__r211 = ep21 [L130] init__r231 = ep23 [L131] init__r311 = ep31 [L132] init__r321 = ep32 [L133] COND FALSE !(!(init__r121 == 0)) [L1835] COND TRUE !(init__r131 == 0) [L1837] COND TRUE !(ep32 == 0) [L1839] init__tmp = 1 [L137] init__r122 = (_Bool)init__tmp [L138] COND TRUE !(init__r131 == 0) [L140] init__tmp___0 = 1 [L142] init__r132 = (_Bool)init__tmp___0 [L143] COND TRUE !(init__r211 == 0) [L145] init__tmp___1 = 1 [L147] init__r212 = (_Bool)init__tmp___1 [L148] COND FALSE !(!(init__r231 == 0)) [L1766] COND TRUE !(init__r211 == 0) [L1768] COND TRUE !(ep13 == 0) [L1770] init__tmp___2 = 1 [L152] init__r232 = (_Bool)init__tmp___2 [L153] COND FALSE !(!(init__r311 == 0)) [L1743] COND TRUE !(init__r321 == 0) [L1745] COND TRUE !(ep21 == 0) [L1747] init__tmp___3 = 1 [L157] init__r312 = (_Bool)init__tmp___3 [L158] COND TRUE !(init__r321 == 0) [L160] init__tmp___4 = 1 [L162] init__r322 = (_Bool)init__tmp___4 [L163] COND TRUE ((int)id1) != ((int)id2) [L165] COND TRUE ((int)id1) != ((int)id3) [L167] COND TRUE ((int)id2) != ((int)id3) [L169] COND TRUE ((int)id1) >= 0 [L171] COND TRUE ((int)id2) >= 0 [L173] COND TRUE ((int)id3) >= 0 [L175] COND TRUE ((int)r1) == 0 [L177] COND TRUE ((int)r2) == 0 [L179] COND TRUE ((int)r3) == 0 [L181] COND TRUE !(init__r122 == 0) [L183] COND TRUE !(init__r132 == 0) [L185] COND TRUE !(init__r212 == 0) [L187] COND TRUE !(init__r232 == 0) [L189] COND TRUE !(init__r312 == 0) [L191] COND TRUE !(init__r322 == 0) [L193] COND TRUE ((int)max1) == ((int)id1) [L195] COND TRUE ((int)max2) == ((int)id2) [L197] COND TRUE ((int)max3) == ((int)id3) [L199] COND TRUE ((int)st1) == 0 [L201] COND TRUE ((int)st2) == 0 [L203] COND TRUE ((int)st3) == 0 [L205] COND TRUE ((int)nl1) == 0 [L207] COND TRUE ((int)nl2) == 0 [L209] COND TRUE ((int)nl3) == 0 [L211] COND TRUE ((int)mode1) == 0 [L213] COND TRUE ((int)mode2) == 0 [L215] COND TRUE ((int)mode3) == 0 [L217] init__tmp___5 = 1 [L218] __return_1142 = init__tmp___5 [L219] main__i2 = __return_1142 [L220] COND TRUE main__i2 != 0 [L222] p12_old = nomsg [L223] p12_new = nomsg [L224] p13_old = nomsg [L225] p13_new = nomsg [L226] p21_old = nomsg [L227] p21_new = nomsg [L228] p23_old = nomsg [L229] p23_new = nomsg [L230] p31_old = nomsg [L231] p31_new = nomsg [L232] p32_old = nomsg [L233] p32_new = nomsg [L234] main__i2 = 0 [L236] COND FALSE !(!(mode1 == 0)) [L242] COND TRUE ((int)r1) < 2 [L244] COND FALSE !(!(ep12 == 0)) [L255] COND TRUE !(ep13 == 0) [L257] int node1____CPAchecker_TMP_1; [L258] COND TRUE max1 != nomsg [L260] COND TRUE p13_new == nomsg [L262] node1____CPAchecker_TMP_1 = max1 [L264] p13_new = node1____CPAchecker_TMP_1 [L266] mode1 = 1 [L268] COND FALSE !(!(mode2 == 0)) [L274] COND TRUE ((int)r2) < 2 [L276] COND TRUE !(ep21 == 0) [L278] int node2____CPAchecker_TMP_0; [L279] COND TRUE max2 != nomsg [L281] COND TRUE p21_new == nomsg [L283] node2____CPAchecker_TMP_0 = max2 [L285] p21_new = node2____CPAchecker_TMP_0 [L287] COND FALSE !(!(ep23 == 0)) [L298] mode2 = 1 [L300] COND FALSE !(!(mode3 == 0)) [L306] COND TRUE ((int)r3) < 2 [L308] COND FALSE !(!(ep31 == 0)) [L319] COND TRUE !(ep32 == 0) [L321] int node3____CPAchecker_TMP_1; [L322] COND TRUE max3 != nomsg [L324] COND TRUE p32_new == nomsg [L326] node3____CPAchecker_TMP_1 = max3 [L328] p32_new = node3____CPAchecker_TMP_1 [L330] mode3 = 1 [L331] p12_old = p12_new [L332] p12_new = nomsg [L333] p13_old = p13_new [L334] p13_new = nomsg [L335] p21_old = p21_new [L336] p21_new = nomsg [L337] p23_old = p23_new [L338] p23_new = nomsg [L339] p31_old = p31_new [L340] p31_new = nomsg [L341] p32_old = p32_new [L342] p32_new = nomsg [L344] int check__tmp; [L345] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L347] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L349] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L351] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L353] COND FALSE !(((int)r1) >= 2) [L359] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L361] COND TRUE ((int)r1) < 2 [L363] COND FALSE !(((int)r1) >= 2) [L369] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L371] COND TRUE ((int)r1) < 2 [L373] check__tmp = 1 [L374] __return_1270 = check__tmp [L375] main__c1 = __return_1270 [L377] _Bool __tmp_1; [L378] __tmp_1 = main__c1 [L379] _Bool assert__arg; [L380] assert__arg = __tmp_1 [L381] COND FALSE !(assert__arg == 0) [L388] COND TRUE !(mode1 == 0) [L390] COND FALSE !(r1 == 255) [L396] r1 = r1 + 1 [L397] COND TRUE !(ep21 == 0) [L399] m1 = p21_old [L400] p21_old = nomsg [L401] COND FALSE !(((int)m1) > ((int)max1)) [L405] COND FALSE !(!(ep31 == 0)) [L413] COND TRUE ((int)r1) == 1 [L415] COND TRUE ((int)max1) == ((int)id1) [L417] st1 = 1 [L418] mode1 = 0 [L420] COND TRUE !(mode2 == 0) [L422] COND FALSE !(r2 == 255) [L428] r2 = r2 + 1 [L429] COND FALSE !(!(ep12 == 0)) [L437] COND TRUE !(ep32 == 0) [L439] m2 = p32_old [L440] p32_old = nomsg [L441] COND TRUE ((int)m2) > ((int)max2) [L443] max2 = m2 [L445] COND FALSE !(((int)r2) == 2) [L451] mode2 = 0 [L453] COND TRUE !(mode3 == 0) [L455] COND FALSE !(r3 == 255) [L461] r3 = r3 + 1 [L462] COND TRUE !(ep13 == 0) [L464] m3 = p13_old [L465] p13_old = nomsg [L466] COND FALSE !(((int)m3) > ((int)max3)) [L470] COND FALSE !(!(ep23 == 0)) [L478] COND FALSE !(((int)r3) == 2) [L484] mode3 = 0 [L485] p12_old = p12_new [L486] p12_new = nomsg [L487] p13_old = p13_new [L488] p13_new = nomsg [L489] p21_old = p21_new [L490] p21_new = nomsg [L491] p23_old = p23_new [L492] p23_new = nomsg [L493] p31_old = p31_new [L494] p31_new = nomsg [L495] p32_old = p32_new [L496] p32_new = nomsg [L498] int check__tmp; [L499] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L501] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L503] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L505] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L507] COND FALSE !(((int)r1) >= 2) [L513] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) == 0) [L519] check__tmp = 0 [L520] __return_1696 = check__tmp [L521] main__c1 = __return_1696 [L523] _Bool __tmp_2; [L524] __tmp_2 = main__c1 [L525] _Bool assert__arg; [L526] assert__arg = __tmp_2 [L527] COND TRUE assert__arg == 0 [L529] CALL reach_error() [L4] __assert_fail("0", "pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 258 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 173.0s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 68.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7750 SDtfs, 23117 SDslu, 12216 SDs, 0 SdLazy, 10817 SolverSat, 821 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 231 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 22.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12607occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.6s AutomataMinimizationTime, 18 MinimizatonAttempts, 64627 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 88.1s InterpolantComputationTime, 2047 NumberOfCodeBlocks, 2047 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1914 ConstructedInterpolants, 0 QuantifiedInterpolants, 1422418 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...