/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=DEEPEST --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_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:33:30,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:33:30,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:33:30,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:33:30,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:33:30,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:33:30,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:33:30,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:33:30,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:33:30,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:33:30,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:33:30,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:33:30,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:33:30,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:33:30,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:33:30,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:33:30,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:33:30,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:33:30,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:33:30,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:33:30,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:33:30,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:33:30,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:33:30,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:33:30,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:33:30,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:33:30,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:33:30,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:33:30,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:33:30,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:33:30,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:33:30,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:33:30,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:33:30,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:33:30,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:33:30,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:33:30,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:33:30,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:33:30,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:33:30,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:33:30,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:33:30,337 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 [2020-10-28 00:33:30,365 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:33:30,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:33:30,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:33:30,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:33:30,367 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:33:30,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:33:30,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:33:30,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:33:30,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:33:30,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:33:30,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:33:30,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:33:30,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:33:30,369 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:33:30,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:33:30,369 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:33:30,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:33:30,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:33:30,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:33:30,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:33:30,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:33:30,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:33:30,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:33:30,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:33:30,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:33:30,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:33:30,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:33:30,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:33:30,372 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:33:30,372 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:33:30,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:33:30,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:33:30,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:33:30,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:33:30,844 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:33:30,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:33:30,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93e1e5d99/d14266e8e73a4cda83413706e2724f88/FLAG17c5febfb [2020-10-28 00:33:31,729 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:33:31,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:33:31,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93e1e5d99/d14266e8e73a4cda83413706e2724f88/FLAG17c5febfb [2020-10-28 00:33:31,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93e1e5d99/d14266e8e73a4cda83413706e2724f88 [2020-10-28 00:33:31,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:33:31,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:33:31,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:33:31,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:33:31,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:33:31,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:33:31" (1/1) ... [2020-10-28 00:33:31,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1294b6f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:31, skipping insertion in model container [2020-10-28 00:33:31,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:33:31" (1/1) ... [2020-10-28 00:33:31,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:33:32,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:33:32,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:33:32,932 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:33:33,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:33:33,316 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:33:33,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:33 WrapperNode [2020-10-28 00:33:33,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:33:33,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:33:33,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:33:33,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:33:33,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:33" (1/1) ... [2020-10-28 00:33:33,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:33" (1/1) ... [2020-10-28 00:33:33,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:33" (1/1) ... [2020-10-28 00:33:33,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:33" (1/1) ... [2020-10-28 00:33:33,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:33" (1/1) ... [2020-10-28 00:33:33,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:33" (1/1) ... [2020-10-28 00:33:33,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:33" (1/1) ... [2020-10-28 00:33:33,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:33:33,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:33:33,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:33:33,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:33:33,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:33" (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 [2020-10-28 00:33:33,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:33:33,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:33:33,646 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:33:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:33:33,647 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:33:33,648 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:33:33,648 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:33:33,648 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:33:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:33:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:33:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:33:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:33:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:33:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:33:33,651 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:33:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:33:33,653 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:33:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:33:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:33:33,654 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:33:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:33:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:33:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:33:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:33:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:33:33,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:33:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:33:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:33:33,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:33:36,164 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:33:36,165 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:33:36,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:33:36 BoogieIcfgContainer [2020-10-28 00:33:36,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:33:36,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:33:36,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:33:36,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:33:36,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:33:31" (1/3) ... [2020-10-28 00:33:36,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2be0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:33:36, skipping insertion in model container [2020-10-28 00:33:36,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:33:33" (2/3) ... [2020-10-28 00:33:36,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2be0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:33:36, skipping insertion in model container [2020-10-28 00:33:36,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:33:36" (3/3) ... [2020-10-28 00:33:36,178 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:33:36,191 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:33:36,198 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:33:36,212 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:33:36,247 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:33:36,248 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:33:36,248 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:33:36,248 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:33:36,248 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:33:36,248 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:33:36,248 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:33:36,249 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:33:36,282 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states. [2020-10-28 00:33:36,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-28 00:33:36,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:33:36,309 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] [2020-10-28 00:33:36,313 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:33:36,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:33:36,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1938452665, now seen corresponding path program 1 times [2020-10-28 00:33:36,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:33:36,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66182572] [2020-10-28 00:33:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:33:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:37,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:38,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:38,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:38,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:39,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:39,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:39,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:39,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:40,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:40,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:40,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:42,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:33:42,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 00:33:42,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:33:42,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 00:33:42,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:33:42,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:33:42,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:33:42,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 00:33:42,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:33:43,417 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 00:33:43,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:33:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:43,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:43,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:33:43,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:33:43,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:33:43,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 00:33:43,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:33:43,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:33:43,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:33:43,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:33:43,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:33:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:33:43,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66182572] [2020-10-28 00:33:43,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:33:43,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:33:43,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133829441] [2020-10-28 00:33:43,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:33:43,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:33:43,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:33:43,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:33:43,712 INFO L87 Difference]: Start difference. First operand 656 states. Second operand 5 states. [2020-10-28 00:33:49,189 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:33:51,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:33:51,178 INFO L93 Difference]: Finished difference Result 1894 states and 3359 transitions. [2020-10-28 00:33:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:33:51,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2020-10-28 00:33:51,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:33:51,220 INFO L225 Difference]: With dead ends: 1894 [2020-10-28 00:33:51,221 INFO L226 Difference]: Without dead ends: 1257 [2020-10-28 00:33:51,229 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 [2020-10-28 00:33:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2020-10-28 00:33:51,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1254. [2020-10-28 00:33:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1254 states. [2020-10-28 00:33:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1957 transitions. [2020-10-28 00:33:51,401 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1957 transitions. Word has length 255 [2020-10-28 00:33:51,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:33:51,405 INFO L481 AbstractCegarLoop]: Abstraction has 1254 states and 1957 transitions. [2020-10-28 00:33:51,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:33:51,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1957 transitions. [2020-10-28 00:33:51,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-28 00:33:51,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:33:51,423 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] [2020-10-28 00:33:51,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:33:51,423 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:33:51,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:33:51,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1446745989, now seen corresponding path program 1 times [2020-10-28 00:33:51,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:33:51,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062316597] [2020-10-28 00:33:51,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:33:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:51,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:51,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:51,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:52,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:52,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:52,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:52,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:52,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:52,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:53,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:53,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:53,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:56,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:56,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:56,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:33:56,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-28 00:33:56,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:33:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-28 00:33:56,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:33:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:33:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 00:33:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 00:33:56,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:33:57,343 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 00:33:57,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:33:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:33:57,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:33:57,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:33:57,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:33:57,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:33:57,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 00:33:57,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:33:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:33:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:33:57,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:33:57,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:33:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:33:57,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062316597] [2020-10-28 00:33:57,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:33:57,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:33:57,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401461074] [2020-10-28 00:33:57,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:33:57,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:33:57,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:33:57,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:33:57,592 INFO L87 Difference]: Start difference. First operand 1254 states and 1957 transitions. Second operand 4 states. [2020-10-28 00:34:04,579 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2020-10-28 00:34:06,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:06,622 INFO L93 Difference]: Finished difference Result 3546 states and 5498 transitions. [2020-10-28 00:34:06,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:34:06,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2020-10-28 00:34:06,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:06,641 INFO L225 Difference]: With dead ends: 3546 [2020-10-28 00:34:06,641 INFO L226 Difference]: Without dead ends: 2419 [2020-10-28 00:34:06,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:06,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2020-10-28 00:34:06,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 2416. [2020-10-28 00:34:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2416 states. [2020-10-28 00:34:06,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 3745 transitions. [2020-10-28 00:34:06,763 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 3745 transitions. Word has length 257 [2020-10-28 00:34:06,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:06,764 INFO L481 AbstractCegarLoop]: Abstraction has 2416 states and 3745 transitions. [2020-10-28 00:34:06,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:34:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 3745 transitions. [2020-10-28 00:34:06,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-28 00:34:06,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:06,772 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] [2020-10-28 00:34:06,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:34:06,772 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:06,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:06,773 INFO L82 PathProgramCache]: Analyzing trace with hash -892842016, now seen corresponding path program 1 times [2020-10-28 00:34:06,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:06,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265798564] [2020-10-28 00:34:06,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:06,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:06,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:07,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:07,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:07,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:07,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:07,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:07,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:08,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:08,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:08,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:08,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:11,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:11,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-28 00:34:11,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:34:11,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 00:34:11,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:11,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:34:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 00:34:11,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:34:11,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:12,653 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 00:34:12,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:12,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:12,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:12,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:12,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:12,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 00:34:12,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:12,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:12,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265798564] [2020-10-28 00:34:12,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:12,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:34:12,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129331875] [2020-10-28 00:34:12,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:34:12,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:12,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:34:12,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:34:12,888 INFO L87 Difference]: Start difference. First operand 2416 states and 3745 transitions. Second operand 4 states. [2020-10-28 00:34:20,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:20,863 INFO L93 Difference]: Finished difference Result 7064 states and 10917 transitions. [2020-10-28 00:34:20,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:34:20,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2020-10-28 00:34:20,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:20,893 INFO L225 Difference]: With dead ends: 7064 [2020-10-28 00:34:20,893 INFO L226 Difference]: Without dead ends: 4742 [2020-10-28 00:34:20,899 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 [2020-10-28 00:34:20,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4742 states. [2020-10-28 00:34:21,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4742 to 2429. [2020-10-28 00:34:21,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2429 states. [2020-10-28 00:34:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 3761 transitions. [2020-10-28 00:34:21,036 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 3761 transitions. Word has length 257 [2020-10-28 00:34:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:21,036 INFO L481 AbstractCegarLoop]: Abstraction has 2429 states and 3761 transitions. [2020-10-28 00:34:21,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:34:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 3761 transitions. [2020-10-28 00:34:21,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 00:34:21,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:21,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:21,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:34:21,045 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:21,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:21,045 INFO L82 PathProgramCache]: Analyzing trace with hash -136245752, now seen corresponding path program 1 times [2020-10-28 00:34:21,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:21,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806544552] [2020-10-28 00:34:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:21,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:21,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:21,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:21,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:21,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:21,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:22,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:22,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:22,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:22,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:22,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:22,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:26,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:26,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 00:34:26,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:34:26,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 00:34:26,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:34:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 00:34:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 00:34:26,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:26,949 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 00:34:26,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:26,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:26,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:26,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:26,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:26,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 00:34:26,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:26,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:26,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:27,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806544552] [2020-10-28 00:34:27,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:27,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:34:27,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225006141] [2020-10-28 00:34:27,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:34:27,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:27,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:34:27,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:34:27,170 INFO L87 Difference]: Start difference. First operand 2429 states and 3761 transitions. Second operand 4 states. [2020-10-28 00:34:33,614 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2020-10-28 00:34:35,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:35,618 INFO L93 Difference]: Finished difference Result 7045 states and 10876 transitions. [2020-10-28 00:34:35,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:34:35,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 258 [2020-10-28 00:34:35,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:35,645 INFO L225 Difference]: With dead ends: 7045 [2020-10-28 00:34:35,646 INFO L226 Difference]: Without dead ends: 4760 [2020-10-28 00:34:35,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:35,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4760 states. [2020-10-28 00:34:35,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4760 to 4757. [2020-10-28 00:34:35,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4757 states. [2020-10-28 00:34:35,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4757 states to 4757 states and 7325 transitions. [2020-10-28 00:34:35,893 INFO L78 Accepts]: Start accepts. Automaton has 4757 states and 7325 transitions. Word has length 258 [2020-10-28 00:34:35,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:35,894 INFO L481 AbstractCegarLoop]: Abstraction has 4757 states and 7325 transitions. [2020-10-28 00:34:35,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:34:35,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4757 states and 7325 transitions. [2020-10-28 00:34:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-28 00:34:35,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:35,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:34:35,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:34:35,908 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:35,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:35,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1411978251, now seen corresponding path program 1 times [2020-10-28 00:34:35,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:35,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138124820] [2020-10-28 00:34:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:35,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:36,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:36,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:36,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:37,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:37,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:37,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:37,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:37,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:37,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:37,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:39,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:40,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:40,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 00:34:40,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:34:40,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 00:34:40,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:34:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 00:34:40,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:34:40,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:41,766 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 00:34:41,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:41,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:41,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:41,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:41,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:41,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 00:34:41,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:41,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:41,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138124820] [2020-10-28 00:34:41,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:41,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:34:41,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262385167] [2020-10-28 00:34:41,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:34:41,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:41,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:34:41,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:34:41,955 INFO L87 Difference]: Start difference. First operand 4757 states and 7325 transitions. Second operand 5 states. [2020-10-28 00:34:49,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:34:49,891 INFO L93 Difference]: Finished difference Result 12847 states and 19599 transitions. [2020-10-28 00:34:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:34:49,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-28 00:34:49,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:34:49,931 INFO L225 Difference]: With dead ends: 12847 [2020-10-28 00:34:49,931 INFO L226 Difference]: Without dead ends: 8676 [2020-10-28 00:34:49,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:34:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8676 states. [2020-10-28 00:34:50,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8676 to 5106. [2020-10-28 00:34:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5106 states. [2020-10-28 00:34:50,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5106 states to 5106 states and 7921 transitions. [2020-10-28 00:34:50,285 INFO L78 Accepts]: Start accepts. Automaton has 5106 states and 7921 transitions. Word has length 258 [2020-10-28 00:34:50,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:34:50,285 INFO L481 AbstractCegarLoop]: Abstraction has 5106 states and 7921 transitions. [2020-10-28 00:34:50,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:34:50,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5106 states and 7921 transitions. [2020-10-28 00:34:50,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-28 00:34:50,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:34:50,299 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] [2020-10-28 00:34:50,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:34:50,300 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:34:50,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:34:50,300 INFO L82 PathProgramCache]: Analyzing trace with hash 114015140, now seen corresponding path program 1 times [2020-10-28 00:34:50,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:34:50,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688899947] [2020-10-28 00:34:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:34:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:50,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:50,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:51,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:52,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:52,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:55,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:55,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-28 00:34:55,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:34:55,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 00:34:55,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:34:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 00:34:55,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 00:34:55,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:56,122 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 00:34:56,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:34:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:34:56,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:34:56,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:34:56,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:34:56,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:34:56,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:34:56,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:34:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:34:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:34:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:34:56,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:34:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:34:56,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688899947] [2020-10-28 00:34:56,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:34:56,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:34:56,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860637767] [2020-10-28 00:34:56,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:34:56,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:34:56,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:34:56,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:34:56,203 INFO L87 Difference]: Start difference. First operand 5106 states and 7921 transitions. Second operand 4 states. [2020-10-28 00:35:01,995 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2020-10-28 00:35:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:02,425 INFO L93 Difference]: Finished difference Result 9932 states and 15457 transitions. [2020-10-28 00:35:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:02,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 259 [2020-10-28 00:35:02,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:02,456 INFO L225 Difference]: With dead ends: 9932 [2020-10-28 00:35:02,457 INFO L226 Difference]: Without dead ends: 6765 [2020-10-28 00:35:02,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:02,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6765 states. [2020-10-28 00:35:02,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6765 to 6102. [2020-10-28 00:35:02,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6102 states. [2020-10-28 00:35:02,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6102 states to 6102 states and 9553 transitions. [2020-10-28 00:35:02,803 INFO L78 Accepts]: Start accepts. Automaton has 6102 states and 9553 transitions. Word has length 259 [2020-10-28 00:35:02,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:02,803 INFO L481 AbstractCegarLoop]: Abstraction has 6102 states and 9553 transitions. [2020-10-28 00:35:02,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:02,803 INFO L276 IsEmpty]: Start isEmpty. Operand 6102 states and 9553 transitions. [2020-10-28 00:35:02,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-28 00:35:02,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:02,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:02,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:35:02,816 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:02,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:02,817 INFO L82 PathProgramCache]: Analyzing trace with hash -606127288, now seen corresponding path program 1 times [2020-10-28 00:35:02,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:02,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146613881] [2020-10-28 00:35:02,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:02,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:02,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:02,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:03,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:05,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:05,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:06,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:07,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:07,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-28 00:35:07,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:35:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:35:07,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 00:35:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:35:07,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:08,603 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 00:35:08,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:08,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:08,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:08,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:08,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:08,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:35:08,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:08,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:08,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:08,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146613881] [2020-10-28 00:35:08,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:08,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:08,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036255383] [2020-10-28 00:35:08,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:08,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:08,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:08,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:08,671 INFO L87 Difference]: Start difference. First operand 6102 states and 9553 transitions. Second operand 4 states. [2020-10-28 00:35:16,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:16,245 INFO L93 Difference]: Finished difference Result 16396 states and 25307 transitions. [2020-10-28 00:35:16,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:35:16,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 260 [2020-10-28 00:35:16,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:16,272 INFO L225 Difference]: With dead ends: 16396 [2020-10-28 00:35:16,272 INFO L226 Difference]: Without dead ends: 11252 [2020-10-28 00:35:16,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:16,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11252 states. [2020-10-28 00:35:16,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11252 to 6207. [2020-10-28 00:35:16,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6207 states. [2020-10-28 00:35:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6207 states to 6207 states and 9687 transitions. [2020-10-28 00:35:16,654 INFO L78 Accepts]: Start accepts. Automaton has 6207 states and 9687 transitions. Word has length 260 [2020-10-28 00:35:16,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:16,654 INFO L481 AbstractCegarLoop]: Abstraction has 6207 states and 9687 transitions. [2020-10-28 00:35:16,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:16,654 INFO L276 IsEmpty]: Start isEmpty. Operand 6207 states and 9687 transitions. [2020-10-28 00:35:16,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-28 00:35:16,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:16,666 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] [2020-10-28 00:35:16,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:35:16,667 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:16,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:16,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1018460282, now seen corresponding path program 1 times [2020-10-28 00:35:16,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:16,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737912095] [2020-10-28 00:35:16,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:16,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:16,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:17,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:17,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:17,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:17,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:17,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:17,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:17,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:17,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:18,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:18,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:19,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:21,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:21,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-28 00:35:21,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:35:21,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 00:35:21,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:35:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 00:35:21,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 00:35:21,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:22,468 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 00:35:22,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:22,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:22,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:22,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:22,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:22,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:35:22,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:22,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:22,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737912095] [2020-10-28 00:35:22,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:22,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:35:22,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703662254] [2020-10-28 00:35:22,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:35:22,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:22,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:35:22,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:35:22,544 INFO L87 Difference]: Start difference. First operand 6207 states and 9687 transitions. Second operand 4 states. [2020-10-28 00:35:28,825 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2020-10-28 00:35:29,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:29,065 INFO L93 Difference]: Finished difference Result 13121 states and 20651 transitions. [2020-10-28 00:35:29,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:29,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 261 [2020-10-28 00:35:29,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:29,087 INFO L225 Difference]: With dead ends: 13121 [2020-10-28 00:35:29,087 INFO L226 Difference]: Without dead ends: 8810 [2020-10-28 00:35:29,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:29,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8810 states. [2020-10-28 00:35:29,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8810 to 7995. [2020-10-28 00:35:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7995 states. [2020-10-28 00:35:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7995 states to 7995 states and 12623 transitions. [2020-10-28 00:35:29,669 INFO L78 Accepts]: Start accepts. Automaton has 7995 states and 12623 transitions. Word has length 261 [2020-10-28 00:35:29,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:29,669 INFO L481 AbstractCegarLoop]: Abstraction has 7995 states and 12623 transitions. [2020-10-28 00:35:29,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:35:29,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7995 states and 12623 transitions. [2020-10-28 00:35:29,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-28 00:35:29,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:29,679 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] [2020-10-28 00:35:29,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:35:29,679 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:29,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:29,680 INFO L82 PathProgramCache]: Analyzing trace with hash 300626491, now seen corresponding path program 1 times [2020-10-28 00:35:29,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:29,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289062922] [2020-10-28 00:35:29,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:29,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:29,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:29,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:29,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:30,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:31,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:31,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:32,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:32,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:33,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:34,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:34,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-28 00:35:34,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 00:35:34,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 00:35:34,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:35:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 00:35:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 00:35:34,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:35,490 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 00:35:35,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:35,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:35,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:35,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:35,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:35,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:35:35,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:35,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:35,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:35,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289062922] [2020-10-28 00:35:35,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:35,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:35:35,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657184592] [2020-10-28 00:35:35,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:35:35,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:35,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:35:35,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:35,580 INFO L87 Difference]: Start difference. First operand 7995 states and 12623 transitions. Second operand 5 states. [2020-10-28 00:35:40,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:40,001 INFO L93 Difference]: Finished difference Result 14101 states and 22121 transitions. [2020-10-28 00:35:40,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:35:40,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2020-10-28 00:35:40,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:40,023 INFO L225 Difference]: With dead ends: 14101 [2020-10-28 00:35:40,023 INFO L226 Difference]: Without dead ends: 7155 [2020-10-28 00:35:40,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:35:40,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7155 states. [2020-10-28 00:35:40,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7155 to 7119. [2020-10-28 00:35:40,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7119 states. [2020-10-28 00:35:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7119 states to 7119 states and 11229 transitions. [2020-10-28 00:35:40,602 INFO L78 Accepts]: Start accepts. Automaton has 7119 states and 11229 transitions. Word has length 261 [2020-10-28 00:35:40,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:40,602 INFO L481 AbstractCegarLoop]: Abstraction has 7119 states and 11229 transitions. [2020-10-28 00:35:40,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:35:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 7119 states and 11229 transitions. [2020-10-28 00:35:40,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-28 00:35:40,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:40,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:40,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:35:40,611 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:40,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:40,612 INFO L82 PathProgramCache]: Analyzing trace with hash 947975235, now seen corresponding path program 1 times [2020-10-28 00:35:40,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:40,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570663172] [2020-10-28 00:35:40,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:40,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:40,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:41,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:41,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:41,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:41,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:41,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:41,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:41,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:41,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:42,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:45,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:45,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-28 00:35:45,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:35:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:35:45,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:35:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:35:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 00:35:45,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:46,594 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 00:35:46,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:35:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:46,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:46,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:35:46,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:35:46,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:35:46,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:35:46,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:35:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:35:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:35:46,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:35:46,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:35:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:35:46,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570663172] [2020-10-28 00:35:46,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:35:46,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:35:46,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252168404] [2020-10-28 00:35:46,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:35:46,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:35:46,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:35:46,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:35:46,699 INFO L87 Difference]: Start difference. First operand 7119 states and 11229 transitions. Second operand 5 states. [2020-10-28 00:35:51,964 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:35:54,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:35:54,320 INFO L93 Difference]: Finished difference Result 20863 states and 32849 transitions. [2020-10-28 00:35:54,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:35:54,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2020-10-28 00:35:54,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:35:54,346 INFO L225 Difference]: With dead ends: 20863 [2020-10-28 00:35:54,346 INFO L226 Difference]: Without dead ends: 13923 [2020-10-28 00:35:54,361 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 [2020-10-28 00:35:54,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13923 states. [2020-10-28 00:35:55,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13923 to 13920. [2020-10-28 00:35:55,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13920 states. [2020-10-28 00:35:55,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13920 states to 13920 states and 21780 transitions. [2020-10-28 00:35:55,130 INFO L78 Accepts]: Start accepts. Automaton has 13920 states and 21780 transitions. Word has length 262 [2020-10-28 00:35:55,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:35:55,131 INFO L481 AbstractCegarLoop]: Abstraction has 13920 states and 21780 transitions. [2020-10-28 00:35:55,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:35:55,131 INFO L276 IsEmpty]: Start isEmpty. Operand 13920 states and 21780 transitions. [2020-10-28 00:35:55,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-28 00:35:55,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:35:55,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:35:55,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:35:55,144 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:35:55,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:35:55,144 INFO L82 PathProgramCache]: Analyzing trace with hash -760107844, now seen corresponding path program 1 times [2020-10-28 00:35:55,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:35:55,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987161506] [2020-10-28 00:35:55,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:35:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:35:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:55,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:56,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:56,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:35:56,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:00,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:00,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-28 00:36:00,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:36:00,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 00:36:00,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 00:36:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 00:36:00,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:00,980 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 00:36:00,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:00,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:00,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:00,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:00,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:00,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:36:00,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:00,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:01,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987161506] [2020-10-28 00:36:01,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:01,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:01,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584094344] [2020-10-28 00:36:01,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:01,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:01,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:01,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:01,079 INFO L87 Difference]: Start difference. First operand 13920 states and 21780 transitions. Second operand 4 states. [2020-10-28 00:36:07,961 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2020-10-28 00:36:10,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:10,652 INFO L93 Difference]: Finished difference Result 40030 states and 62471 transitions. [2020-10-28 00:36:10,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:36:10,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 264 [2020-10-28 00:36:10,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:10,689 INFO L225 Difference]: With dead ends: 40030 [2020-10-28 00:36:10,689 INFO L226 Difference]: Without dead ends: 26919 [2020-10-28 00:36:10,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:10,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26919 states. [2020-10-28 00:36:12,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26919 to 26916. [2020-10-28 00:36:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26916 states. [2020-10-28 00:36:12,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26916 states to 26916 states and 41882 transitions. [2020-10-28 00:36:12,423 INFO L78 Accepts]: Start accepts. Automaton has 26916 states and 41882 transitions. Word has length 264 [2020-10-28 00:36:12,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:12,424 INFO L481 AbstractCegarLoop]: Abstraction has 26916 states and 41882 transitions. [2020-10-28 00:36:12,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:12,424 INFO L276 IsEmpty]: Start isEmpty. Operand 26916 states and 41882 transitions. [2020-10-28 00:36:12,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-28 00:36:12,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:12,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:36:12,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:36:12,443 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:12,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:12,444 INFO L82 PathProgramCache]: Analyzing trace with hash -272891967, now seen corresponding path program 1 times [2020-10-28 00:36:12,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:12,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009854886] [2020-10-28 00:36:12,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:12,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:12,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:12,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:12,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:12,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:12,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:12,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:13,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:13,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:13,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:16,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:16,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:16,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:17,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:17,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-28 00:36:17,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:36:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 00:36:17,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 00:36:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:36:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:18,241 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 00:36:18,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:18,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:18,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:18,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:18,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:36:18,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:18,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:18,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:18,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009854886] [2020-10-28 00:36:18,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:18,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:18,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805493650] [2020-10-28 00:36:18,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:18,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:18,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:18,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:18,320 INFO L87 Difference]: Start difference. First operand 26916 states and 41882 transitions. Second operand 4 states. [2020-10-28 00:36:28,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:28,812 INFO L93 Difference]: Finished difference Result 79392 states and 123352 transitions. [2020-10-28 00:36:28,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:36:28,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 264 [2020-10-28 00:36:28,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:28,886 INFO L225 Difference]: With dead ends: 79392 [2020-10-28 00:36:28,886 INFO L226 Difference]: Without dead ends: 53186 [2020-10-28 00:36:28,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:28,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53186 states. [2020-10-28 00:36:30,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53186 to 27059. [2020-10-28 00:36:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27059 states. [2020-10-28 00:36:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27059 states to 27059 states and 42058 transitions. [2020-10-28 00:36:30,900 INFO L78 Accepts]: Start accepts. Automaton has 27059 states and 42058 transitions. Word has length 264 [2020-10-28 00:36:30,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:30,901 INFO L481 AbstractCegarLoop]: Abstraction has 27059 states and 42058 transitions. [2020-10-28 00:36:30,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 27059 states and 42058 transitions. [2020-10-28 00:36:30,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-28 00:36:30,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:30,924 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] [2020-10-28 00:36:30,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:36:30,924 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:30,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:30,924 INFO L82 PathProgramCache]: Analyzing trace with hash 733028933, now seen corresponding path program 1 times [2020-10-28 00:36:30,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:30,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456393225] [2020-10-28 00:36:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:30,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:30,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:31,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:31,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:31,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:31,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:31,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:31,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:31,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:31,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:31,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:32,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:32,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:35,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:35,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-28 00:36:35,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:36:35,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 00:36:35,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:36:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:36:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 00:36:35,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:36,842 WARN L193 SmtUtils]: Spent 765.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 00:36:36,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:36,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:36,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:36,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:36,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:36,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:36:36,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:36,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:36,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456393225] [2020-10-28 00:36:36,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:36,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:36:36,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329480137] [2020-10-28 00:36:36,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:36:36,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:36,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:36:36,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:36:36,972 INFO L87 Difference]: Start difference. First operand 27059 states and 42058 transitions. Second operand 4 states. [2020-10-28 00:36:45,024 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2020-10-28 00:36:48,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:36:48,699 INFO L93 Difference]: Finished difference Result 79061 states and 122727 transitions. [2020-10-28 00:36:48,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:36:48,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 265 [2020-10-28 00:36:48,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:36:48,913 INFO L225 Difference]: With dead ends: 79061 [2020-10-28 00:36:48,914 INFO L226 Difference]: Without dead ends: 52998 [2020-10-28 00:36:48,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52998 states. [2020-10-28 00:36:52,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52998 to 52995. [2020-10-28 00:36:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52995 states. [2020-10-28 00:36:52,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52995 states to 52995 states and 81902 transitions. [2020-10-28 00:36:52,258 INFO L78 Accepts]: Start accepts. Automaton has 52995 states and 81902 transitions. Word has length 265 [2020-10-28 00:36:52,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:36:52,258 INFO L481 AbstractCegarLoop]: Abstraction has 52995 states and 81902 transitions. [2020-10-28 00:36:52,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:36:52,258 INFO L276 IsEmpty]: Start isEmpty. Operand 52995 states and 81902 transitions. [2020-10-28 00:36:52,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-28 00:36:52,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:36:52,285 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] [2020-10-28 00:36:52,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:36:52,286 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:36:52,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:36:52,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1483332770, now seen corresponding path program 1 times [2020-10-28 00:36:52,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:36:52,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747482256] [2020-10-28 00:36:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:36:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:52,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:52,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:57,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:57,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:57,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-28 00:36:57,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:36:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 00:36:57,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:36:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:36:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:36:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:58,149 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-28 00:36:58,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:36:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:36:58,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:36:58,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:36:58,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:36:58,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:36:58,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:36:58,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:36:58,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:36:58,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:36:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:36:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:36:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:36:58,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747482256] [2020-10-28 00:36:58,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:36:58,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:36:58,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027903231] [2020-10-28 00:36:58,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:36:58,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:36:58,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:36:58,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:36:58,245 INFO L87 Difference]: Start difference. First operand 52995 states and 81902 transitions. Second operand 5 states.