/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.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:03:42,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:03:42,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:03:42,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:03:42,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:03:42,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:03:42,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:03:42,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:03:42,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:03:42,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:03:42,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:03:42,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:03:42,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:03:42,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:03:42,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:03:42,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:03:42,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:03:42,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:03:42,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:03:42,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:03:42,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:03:42,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:03:42,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:03:42,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:03:42,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:03:42,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:03:42,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:03:42,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:03:42,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:03:42,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:03:42,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:03:42,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:03:42,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:03:42,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:03:42,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:03:42,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:03:42,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:03:42,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:03:42,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:03:42,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:03:42,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:03:42,594 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 05:03:42,651 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:03:42,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:03:42,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:03:42,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:03:42,657 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:03:42,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:03:42,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:03:42,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:03:42,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:03:42,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:03:42,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:03:42,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:03:42,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:03:42,660 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:03:42,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:03:42,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:03:42,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:03:42,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:03:42,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:03:42,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:03:42,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:03:42,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:03:42,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:03:42,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:03:42,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:03:42,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:03:42,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:03:42,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:03:42,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:03:42,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:03:43,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:03:43,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:03:43,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:03:43,158 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:03:43,159 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:03:43,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 05:03:43,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/692719a94/2db21a8356e3429c83a63291e7d7676c/FLAG07ad3ca0f [2020-10-27 05:03:43,989 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:03:43,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 05:03:44,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/692719a94/2db21a8356e3429c83a63291e7d7676c/FLAG07ad3ca0f [2020-10-27 05:03:44,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/692719a94/2db21a8356e3429c83a63291e7d7676c [2020-10-27 05:03:44,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:03:44,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:03:44,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:03:44,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:03:44,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:03:44,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:03:44" (1/1) ... [2020-10-27 05:03:44,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f096995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:44, skipping insertion in model container [2020-10-27 05:03:44,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:03:44" (1/1) ... [2020-10-27 05:03:44,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:03:44,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:03:45,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:03:45,714 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:03:46,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:03:46,108 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:03:46,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:46 WrapperNode [2020-10-27 05:03:46,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:03:46,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:03:46,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:03:46,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:03:46,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:46" (1/1) ... [2020-10-27 05:03:46,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:46" (1/1) ... [2020-10-27 05:03:46,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:46" (1/1) ... [2020-10-27 05:03:46,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:46" (1/1) ... [2020-10-27 05:03:46,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:46" (1/1) ... [2020-10-27 05:03:46,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:46" (1/1) ... [2020-10-27 05:03:46,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:46" (1/1) ... [2020-10-27 05:03:46,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:03:46,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:03:46,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:03:46,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:03:46,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:46" (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 05:03:46,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:03:46,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:03:46,424 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:03:46,425 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:03:46,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:03:46,426 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:03:46,426 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:03:46,426 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:03:46,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:03:46,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:03:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:03:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:03:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:03:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:03:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:03:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:03:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:03:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:03:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:03:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:03:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:03:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:03:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:03:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:03:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:03:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:03:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:03:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:03:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:03:49,166 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:03:49,167 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:03:49,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:03:49 BoogieIcfgContainer [2020-10-27 05:03:49,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:03:49,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:03:49,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:03:49,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:03:49,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:03:44" (1/3) ... [2020-10-27 05:03:49,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1959633f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:03:49, skipping insertion in model container [2020-10-27 05:03:49,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:03:46" (2/3) ... [2020-10-27 05:03:49,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1959633f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:03:49, skipping insertion in model container [2020-10-27 05:03:49,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:03:49" (3/3) ... [2020-10-27 05:03:49,180 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 05:03:49,193 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:03:49,199 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:03:49,213 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:03:49,248 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:03:49,248 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:03:49,248 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:03:49,248 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:03:49,248 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:03:49,249 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:03:49,249 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:03:49,249 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:03:49,283 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states. [2020-10-27 05:03:49,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-27 05:03:49,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:49,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:49,310 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:49,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:49,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1786268820, now seen corresponding path program 1 times [2020-10-27 05:03:49,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:49,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740438865] [2020-10-27 05:03:49,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:50,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:51,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:52,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:52,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:52,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:52,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:53,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:53,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:53,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:53,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:54,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:54,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:54,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:55,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:55,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-27 05:03:55,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:03:55,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-27 05:03:55,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 05:03:55,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:03:56,504 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:03:56,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:56,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:56,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:56,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:56,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:56,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 05:03:56,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:56,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:56,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:56,781 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 05:03:56,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740438865] [2020-10-27 05:03:56,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:56,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:56,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666289886] [2020-10-27 05:03:56,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:56,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:56,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:56,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:56,823 INFO L87 Difference]: Start difference. First operand 725 states. Second operand 5 states. [2020-10-27 05:04:04,600 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:04:06,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:06,486 INFO L93 Difference]: Finished difference Result 2091 states and 3729 transitions. [2020-10-27 05:04:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:04:06,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-27 05:04:06,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:06,526 INFO L225 Difference]: With dead ends: 2091 [2020-10-27 05:04:06,526 INFO L226 Difference]: Without dead ends: 1387 [2020-10-27 05:04:06,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:04:06,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-10-27 05:04:06,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1384. [2020-10-27 05:04:06,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2020-10-27 05:04:06,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2126 transitions. [2020-10-27 05:04:06,740 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2126 transitions. Word has length 311 [2020-10-27 05:04:06,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:06,743 INFO L481 AbstractCegarLoop]: Abstraction has 1384 states and 2126 transitions. [2020-10-27 05:04:06,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:06,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2126 transitions. [2020-10-27 05:04:06,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-27 05:04:06,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:06,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:06,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:04:06,768 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:06,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:06,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1313729104, now seen corresponding path program 1 times [2020-10-27 05:04:06,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:06,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778938642] [2020-10-27 05:04:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:06,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:07,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:07,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:07,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:07,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:07,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:08,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:08,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:08,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:08,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:08,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:09,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:09,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:09,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:11,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:11,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-27 05:04:11,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:04:11,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-27 05:04:11,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:11,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:11,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:11,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 05:04:11,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:12,867 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:04:12,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:12,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:12,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:12,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:12,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:12,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:04:12,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:12,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:13,124 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 05:04:13,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778938642] [2020-10-27 05:04:13,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:13,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:13,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533728756] [2020-10-27 05:04:13,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:13,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:13,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:13,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:13,129 INFO L87 Difference]: Start difference. First operand 1384 states and 2126 transitions. Second operand 5 states. [2020-10-27 05:04:20,183 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:04:21,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:21,948 INFO L93 Difference]: Finished difference Result 4012 states and 6141 transitions. [2020-10-27 05:04:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:04:21,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2020-10-27 05:04:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:21,970 INFO L225 Difference]: With dead ends: 4012 [2020-10-27 05:04:21,971 INFO L226 Difference]: Without dead ends: 2705 [2020-10-27 05:04:21,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:04:21,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2020-10-27 05:04:22,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2702. [2020-10-27 05:04:22,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2702 states. [2020-10-27 05:04:22,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 4118 transitions. [2020-10-27 05:04:22,150 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 4118 transitions. Word has length 313 [2020-10-27 05:04:22,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:22,153 INFO L481 AbstractCegarLoop]: Abstraction has 2702 states and 4118 transitions. [2020-10-27 05:04:22,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 4118 transitions. [2020-10-27 05:04:22,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-27 05:04:22,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:22,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:22,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:04:22,163 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:22,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:22,164 INFO L82 PathProgramCache]: Analyzing trace with hash 2126715003, now seen corresponding path program 1 times [2020-10-27 05:04:22,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:22,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003291948] [2020-10-27 05:04:22,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:22,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:22,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:22,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:22,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:22,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:23,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:23,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:23,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:23,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:23,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:23,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:23,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:24,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:24,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:24,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:24,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:27,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:27,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-27 05:04:27,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:04:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:04:27,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 05:04:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:04:28,123 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:04:28,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:28,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:28,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:28,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:28,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:28,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:04:28,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:28,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:28,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:28,366 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 05:04:28,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003291948] [2020-10-27 05:04:28,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:28,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:28,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911824766] [2020-10-27 05:04:28,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:28,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:28,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:28,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:28,369 INFO L87 Difference]: Start difference. First operand 2702 states and 4118 transitions. Second operand 5 states. [2020-10-27 05:04:35,099 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:04:36,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:36,936 INFO L93 Difference]: Finished difference Result 7768 states and 11773 transitions. [2020-10-27 05:04:36,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:04:36,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-27 05:04:36,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:36,963 INFO L225 Difference]: With dead ends: 7768 [2020-10-27 05:04:36,964 INFO L226 Difference]: Without dead ends: 5213 [2020-10-27 05:04:36,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:04:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5213 states. [2020-10-27 05:04:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5213 to 5210. [2020-10-27 05:04:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5210 states. [2020-10-27 05:04:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5210 states to 5210 states and 7856 transitions. [2020-10-27 05:04:37,241 INFO L78 Accepts]: Start accepts. Automaton has 5210 states and 7856 transitions. Word has length 315 [2020-10-27 05:04:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:37,241 INFO L481 AbstractCegarLoop]: Abstraction has 5210 states and 7856 transitions. [2020-10-27 05:04:37,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:37,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5210 states and 7856 transitions. [2020-10-27 05:04:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-27 05:04:37,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:37,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:37,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:04:37,259 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:37,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:37,260 INFO L82 PathProgramCache]: Analyzing trace with hash 188404729, now seen corresponding path program 1 times [2020-10-27 05:04:37,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:37,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955158743] [2020-10-27 05:04:37,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:37,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:37,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:37,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:37,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:38,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:38,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:38,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:39,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:39,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:39,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:39,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:39,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:40,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:40,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:40,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:42,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:42,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-27 05:04:42,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:04:42,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-27 05:04:42,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:42,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:42,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:42,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 05:04:42,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:43,270 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:04:43,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:43,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:43,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:43,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:43,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:43,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:04:43,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:43,499 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 05:04:43,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955158743] [2020-10-27 05:04:43,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:43,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:43,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280683569] [2020-10-27 05:04:43,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:43,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:43,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:43,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:43,502 INFO L87 Difference]: Start difference. First operand 5210 states and 7856 transitions. Second operand 5 states. [2020-10-27 05:04:49,706 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:04:51,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:04:51,518 INFO L93 Difference]: Finished difference Result 15218 states and 22882 transitions. [2020-10-27 05:04:51,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:04:51,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-10-27 05:04:51,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:04:51,571 INFO L225 Difference]: With dead ends: 15218 [2020-10-27 05:04:51,571 INFO L226 Difference]: Without dead ends: 10143 [2020-10-27 05:04:51,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:04:51,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10143 states. [2020-10-27 05:04:52,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10143 to 10140. [2020-10-27 05:04:52,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10140 states. [2020-10-27 05:04:52,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10140 states to 10140 states and 15148 transitions. [2020-10-27 05:04:52,161 INFO L78 Accepts]: Start accepts. Automaton has 10140 states and 15148 transitions. Word has length 317 [2020-10-27 05:04:52,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:52,161 INFO L481 AbstractCegarLoop]: Abstraction has 10140 states and 15148 transitions. [2020-10-27 05:04:52,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:04:52,161 INFO L276 IsEmpty]: Start isEmpty. Operand 10140 states and 15148 transitions. [2020-10-27 05:04:52,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-27 05:04:52,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:52,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:52,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:04:52,186 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:52,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:52,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1620536482, now seen corresponding path program 1 times [2020-10-27 05:04:52,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:52,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047669082] [2020-10-27 05:04:52,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:52,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:52,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:53,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:53,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:53,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:53,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:53,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:54,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:57,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:57,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:57,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-27 05:04:57,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:04:57,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 05:04:57,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 05:04:57,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:58,180 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:04:58,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:58,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:58,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:58,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:58,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:58,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:04:58,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:58,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:58,373 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 05:04:58,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047669082] [2020-10-27 05:04:58,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:58,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:58,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745842562] [2020-10-27 05:04:58,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:58,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:58,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:58,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:58,376 INFO L87 Difference]: Start difference. First operand 10140 states and 15148 transitions. Second operand 5 states. [2020-10-27 05:05:05,684 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:05:07,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:07,796 INFO L93 Difference]: Finished difference Result 29486 states and 43930 transitions. [2020-10-27 05:05:07,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:07,798 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-10-27 05:05:07,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:07,874 INFO L225 Difference]: With dead ends: 29486 [2020-10-27 05:05:07,875 INFO L226 Difference]: Without dead ends: 19807 [2020-10-27 05:05:07,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:07,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19807 states. [2020-10-27 05:05:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19807 to 19804. [2020-10-27 05:05:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19804 states. [2020-10-27 05:05:09,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19804 states to 19804 states and 29354 transitions. [2020-10-27 05:05:09,012 INFO L78 Accepts]: Start accepts. Automaton has 19804 states and 29354 transitions. Word has length 319 [2020-10-27 05:05:09,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:09,013 INFO L481 AbstractCegarLoop]: Abstraction has 19804 states and 29354 transitions. [2020-10-27 05:05:09,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:09,013 INFO L276 IsEmpty]: Start isEmpty. Operand 19804 states and 29354 transitions. [2020-10-27 05:05:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-27 05:05:09,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:09,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:05:09,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:05:09,057 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:09,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:09,057 INFO L82 PathProgramCache]: Analyzing trace with hash -218055528, now seen corresponding path program 1 times [2020-10-27 05:05:09,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:09,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823590264] [2020-10-27 05:05:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:09,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:09,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:09,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:09,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:09,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:09,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:10,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:10,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:11,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:11,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:11,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:11,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:11,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:11,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:14,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:14,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-27 05:05:14,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:05:14,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 05:05:14,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 05:05:14,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:14,972 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:05:14,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:14,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:15,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:15,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:15,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:15,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:05:15,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:15,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:15,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:15,117 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 05:05:15,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823590264] [2020-10-27 05:05:15,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:15,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:15,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445040698] [2020-10-27 05:05:15,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:15,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:15,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:15,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:15,120 INFO L87 Difference]: Start difference. First operand 19804 states and 29354 transitions. Second operand 5 states. [2020-10-27 05:05:22,664 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:05:24,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:24,879 INFO L93 Difference]: Finished difference Result 58414 states and 86440 transitions. [2020-10-27 05:05:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:24,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-27 05:05:24,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:24,967 INFO L225 Difference]: With dead ends: 58414 [2020-10-27 05:05:24,968 INFO L226 Difference]: Without dead ends: 38633 [2020-10-27 05:05:25,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:25,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38633 states. [2020-10-27 05:05:26,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38633 to 38630. [2020-10-27 05:05:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38630 states. [2020-10-27 05:05:27,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38630 states to 38630 states and 56820 transitions. [2020-10-27 05:05:27,007 INFO L78 Accepts]: Start accepts. Automaton has 38630 states and 56820 transitions. Word has length 321 [2020-10-27 05:05:27,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:27,008 INFO L481 AbstractCegarLoop]: Abstraction has 38630 states and 56820 transitions. [2020-10-27 05:05:27,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:27,008 INFO L276 IsEmpty]: Start isEmpty. Operand 38630 states and 56820 transitions. [2020-10-27 05:05:27,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-27 05:05:27,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:27,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:05:27,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:05:27,092 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:27,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:27,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1945687007, now seen corresponding path program 1 times [2020-10-27 05:05:27,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:27,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122198672] [2020-10-27 05:05:27,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:27,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:27,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:31,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:32,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:32,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-27 05:05:32,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:05:32,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 05:05:32,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:32,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:05:32,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:05:32,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-27 05:05:32,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:32,964 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:05:32,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:32,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:32,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:32,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:32,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:05:32,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:32,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:32,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:32,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:33,152 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 05:05:33,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122198672] [2020-10-27 05:05:33,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:33,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:05:33,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373578708] [2020-10-27 05:05:33,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:05:33,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:33,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:05:33,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:05:33,154 INFO L87 Difference]: Start difference. First operand 38630 states and 56820 transitions. Second operand 5 states. [2020-10-27 05:05:41,986 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:05:44,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:05:44,623 INFO L93 Difference]: Finished difference Result 113924 states and 167290 transitions. [2020-10-27 05:05:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:05:44,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-27 05:05:44,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:05:44,744 INFO L225 Difference]: With dead ends: 113924 [2020-10-27 05:05:44,744 INFO L226 Difference]: Without dead ends: 75671 [2020-10-27 05:05:44,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:05:44,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75671 states. [2020-10-27 05:05:48,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75671 to 75668. [2020-10-27 05:05:48,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75668 states. [2020-10-27 05:05:49,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75668 states to 75668 states and 110345 transitions. [2020-10-27 05:05:49,145 INFO L78 Accepts]: Start accepts. Automaton has 75668 states and 110345 transitions. Word has length 323 [2020-10-27 05:05:49,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:05:49,145 INFO L481 AbstractCegarLoop]: Abstraction has 75668 states and 110345 transitions. [2020-10-27 05:05:49,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:05:49,145 INFO L276 IsEmpty]: Start isEmpty. Operand 75668 states and 110345 transitions. [2020-10-27 05:05:49,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-27 05:05:49,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:05:49,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:05:49,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:05:49,221 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:05:49,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:05:49,221 INFO L82 PathProgramCache]: Analyzing trace with hash -596020263, now seen corresponding path program 1 times [2020-10-27 05:05:49,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:05:49,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082570188] [2020-10-27 05:05:49,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:05:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:49,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:49,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:49,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:49,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:49,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:49,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:49,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:49,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:50,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:50,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:50,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:50,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:54,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:54,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-27 05:05:54,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:05:54,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 05:05:54,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:05:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:05:54,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 05:05:54,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 05:05:55,064 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:05:55,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:05:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:05:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:05:55,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:05:55,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:05:55,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:05:55,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:05:55,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:05:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:05:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:05:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:05:55,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:05:55,160 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 05:05:55,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082570188] [2020-10-27 05:05:55,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:05:55,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:05:55,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385498414] [2020-10-27 05:05:55,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:05:55,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:05:55,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:05:55,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:05:55,163 INFO L87 Difference]: Start difference. First operand 75668 states and 110345 transitions. Second operand 4 states. [2020-10-27 05:06:07,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:07,058 INFO L93 Difference]: Finished difference Result 226500 states and 330287 transitions. [2020-10-27 05:06:07,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 05:06:07,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 325 [2020-10-27 05:06:07,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:07,571 INFO L225 Difference]: With dead ends: 226500 [2020-10-27 05:06:07,572 INFO L226 Difference]: Without dead ends: 151288 [2020-10-27 05:06:07,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:06:07,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151288 states. [2020-10-27 05:06:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151288 to 75679. [2020-10-27 05:06:13,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75679 states. [2020-10-27 05:06:13,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75679 states to 75679 states and 110361 transitions. [2020-10-27 05:06:13,279 INFO L78 Accepts]: Start accepts. Automaton has 75679 states and 110361 transitions. Word has length 325 [2020-10-27 05:06:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:13,279 INFO L481 AbstractCegarLoop]: Abstraction has 75679 states and 110361 transitions. [2020-10-27 05:06:13,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:06:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand 75679 states and 110361 transitions. [2020-10-27 05:06:13,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-27 05:06:13,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:13,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:06:13,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:06:13,359 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:13,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:13,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1956602226, now seen corresponding path program 1 times [2020-10-27 05:06:13,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:13,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372041631] [2020-10-27 05:06:13,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:13,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:13,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:13,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:13,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:13,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:13,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:14,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:14,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:14,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:14,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:14,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:14,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:18,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:18,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-27 05:06:18,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:06:18,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 05:06:18,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:06:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 05:06:18,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:19,206 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:06:19,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:19,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:19,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:19,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:19,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:06:19,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:19,359 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 05:06:19,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372041631] [2020-10-27 05:06:19,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:19,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:06:19,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579359434] [2020-10-27 05:06:19,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:06:19,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:19,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:06:19,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:19,362 INFO L87 Difference]: Start difference. First operand 75679 states and 110361 transitions. Second operand 5 states. [2020-10-27 05:06:33,304 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 05:06:37,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:06:37,899 INFO L93 Difference]: Finished difference Result 221528 states and 322091 transitions. [2020-10-27 05:06:37,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:06:37,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-27 05:06:37,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:06:38,260 INFO L225 Difference]: With dead ends: 221528 [2020-10-27 05:06:38,260 INFO L226 Difference]: Without dead ends: 149178 [2020-10-27 05:06:38,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:06:38,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149178 states. [2020-10-27 05:06:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149178 to 149175. [2020-10-27 05:06:48,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149175 states. [2020-10-27 05:06:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149175 states to 149175 states and 215965 transitions. [2020-10-27 05:06:48,633 INFO L78 Accepts]: Start accepts. Automaton has 149175 states and 215965 transitions. Word has length 326 [2020-10-27 05:06:48,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:06:48,633 INFO L481 AbstractCegarLoop]: Abstraction has 149175 states and 215965 transitions. [2020-10-27 05:06:48,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:06:48,634 INFO L276 IsEmpty]: Start isEmpty. Operand 149175 states and 215965 transitions. [2020-10-27 05:06:49,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-27 05:06:49,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:06:49,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:06:49,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:06:49,066 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:06:49,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:06:49,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1790209535, now seen corresponding path program 1 times [2020-10-27 05:06:49,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:06:49,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135672750] [2020-10-27 05:06:49,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:06:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:49,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:49,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:54,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:54,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-27 05:06:54,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:06:54,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 05:06:54,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:06:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:06:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 05:06:54,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:54,917 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 05:06:54,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:06:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:06:54,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:06:54,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:06:54,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:06:54,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:06:54,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:06:54,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:06:54,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:06:54,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:06:54,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:06:54,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:06:55,053 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 05:06:55,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135672750] [2020-10-27 05:06:55,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:06:55,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:06:55,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195332587] [2020-10-27 05:06:55,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:06:55,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:06:55,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:06:55,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:06:55,070 INFO L87 Difference]: Start difference. First operand 149175 states and 215965 transitions. Second operand 5 states. [2020-10-27 05:07:15,764 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 301