/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:08:54,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:08:54,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:08:54,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:08:54,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:08:54,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:08:54,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:08:54,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:08:54,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:08:54,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:08:54,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:08:54,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:08:54,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:08:54,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:08:54,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:08:54,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:08:54,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:08:54,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:08:54,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:08:54,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:08:54,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:08:54,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:08:54,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:08:54,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:08:54,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:08:54,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:08:54,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:08:54,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:08:54,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:08:54,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:08:54,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:08:54,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:08:54,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:08:54,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:08:54,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:08:54,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:08:54,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:08:54,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:08:54,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:08:54,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:08:54,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:08:54,338 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 [2020-10-29 13:08:54,395 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:08:54,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:08:54,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:08:54,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:08:54,401 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:08:54,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:08:54,401 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:08:54,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:08:54,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:08:54,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:08:54,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:08:54,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:08:54,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:08:54,404 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:08:54,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:08:54,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:08:54,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:08:54,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:08:54,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:08:54,405 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:08:54,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:08:54,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:08:54,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:08:54,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:08:54,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:08:54,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:08:54,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:08:54,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:08:54,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:08:54,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:08:54,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:08:54,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:08:54,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:08:54,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:08:54,872 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:08:54,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 13:08:54,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a397f6fce/85ff98f5f20b444183912ccb7a11e9b7/FLAG216831b9b [2020-10-29 13:08:55,852 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:08:55,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 13:08:55,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a397f6fce/85ff98f5f20b444183912ccb7a11e9b7/FLAG216831b9b [2020-10-29 13:08:55,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a397f6fce/85ff98f5f20b444183912ccb7a11e9b7 [2020-10-29 13:08:55,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:08:55,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:08:55,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:08:55,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:08:55,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:08:55,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:08:55" (1/1) ... [2020-10-29 13:08:55,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ec727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:55, skipping insertion in model container [2020-10-29 13:08:55,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:08:55" (1/1) ... [2020-10-29 13:08:55,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:08:56,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:08:57,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:08:57,598 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:08:58,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:08:58,581 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:08:58,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:58 WrapperNode [2020-10-29 13:08:58,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:08:58,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:08:58,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:08:58,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:08:58,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:58" (1/1) ... [2020-10-29 13:08:58,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:58" (1/1) ... [2020-10-29 13:08:58,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:58" (1/1) ... [2020-10-29 13:08:58,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:58" (1/1) ... [2020-10-29 13:08:58,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:58" (1/1) ... [2020-10-29 13:08:58,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:58" (1/1) ... [2020-10-29 13:08:58,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:58" (1/1) ... [2020-10-29 13:08:58,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:08:58,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:08:58,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:08:58,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:08:58,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:58" (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 [2020-10-29 13:08:58,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:08:58,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:08:58,928 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:08:58,928 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:08:58,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:08:58,928 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:08:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:08:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:08:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:08:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:08:58,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:08:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:08:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:08:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:08:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:08:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:08:58,930 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:08:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:08:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:08:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:08:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:08:58,931 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:08:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:08:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:08:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:08:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:08:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:08:58,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:08:58,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:09:05,261 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:09:05,263 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:09:05,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:09:05 BoogieIcfgContainer [2020-10-29 13:09:05,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:09:05,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:09:05,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:09:05,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:09:05,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:08:55" (1/3) ... [2020-10-29 13:09:05,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272f1a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:09:05, skipping insertion in model container [2020-10-29 13:09:05,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:58" (2/3) ... [2020-10-29 13:09:05,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272f1a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:09:05, skipping insertion in model container [2020-10-29 13:09:05,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:09:05" (3/3) ... [2020-10-29 13:09:05,280 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 13:09:05,292 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:09:05,298 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:09:05,311 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:09:05,344 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:09:05,344 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:09:05,344 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:09:05,344 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:09:05,345 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:09:05,345 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:09:05,345 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:09:05,345 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:09:05,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states. [2020-10-29 13:09:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-29 13:09:05,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:09:05,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:09:05,455 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:09:05,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:09:05,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1366298238, now seen corresponding path program 1 times [2020-10-29 13:09:05,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:09:05,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573276699] [2020-10-29 13:09:05,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:09:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:06,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:07,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:09,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:10,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:11,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:11,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:11,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-29 13:09:11,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:09:11,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5317 [2020-10-29 13:09:11,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:11,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:11,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:09:11,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-29 13:09:11,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 264 [2020-10-29 13:09:11,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:09:14,326 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 13:09:14,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:14,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:14,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:14,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:14,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:14,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 13:09:14,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:14,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:09:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:09:14,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:09:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:09:14,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573276699] [2020-10-29 13:09:14,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:14,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:09:14,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144346495] [2020-10-29 13:09:14,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:09:14,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:14,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:09:14,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:09:14,804 INFO L87 Difference]: Start difference. First operand 1326 states. Second operand 4 states. [2020-10-29 13:09:17,250 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 419 [2020-10-29 13:09:31,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:09:31,019 INFO L93 Difference]: Finished difference Result 2218 states and 3955 transitions. [2020-10-29 13:09:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:09:31,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 468 [2020-10-29 13:09:31,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:09:31,069 INFO L225 Difference]: With dead ends: 2218 [2020-10-29 13:09:31,069 INFO L226 Difference]: Without dead ends: 1958 [2020-10-29 13:09:31,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:09:31,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2020-10-29 13:09:31,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1955. [2020-10-29 13:09:31,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1955 states. [2020-10-29 13:09:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 3184 transitions. [2020-10-29 13:09:31,274 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 3184 transitions. Word has length 468 [2020-10-29 13:09:31,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:09:31,277 INFO L481 AbstractCegarLoop]: Abstraction has 1955 states and 3184 transitions. [2020-10-29 13:09:31,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:09:31,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 3184 transitions. [2020-10-29 13:09:31,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-29 13:09:31,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:09:31,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:09:31,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:09:31,293 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:09:31,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:09:31,294 INFO L82 PathProgramCache]: Analyzing trace with hash 863376515, now seen corresponding path program 1 times [2020-10-29 13:09:31,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:09:31,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936196973] [2020-10-29 13:09:31,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:09:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:32,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:33,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:33,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:34,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:34,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:35,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:35,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:35,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:36,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:36,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:36,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:37,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:37,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-29 13:09:37,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:09:37,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5169 [2020-10-29 13:09:37,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:37,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:37,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:09:37,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:09:37,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-29 13:09:37,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:09:39,648 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 13:09:39,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:39,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:39,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:39,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:39,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:39,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 13:09:39,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:39,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:39,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:09:39,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:39,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:09:39,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:09:40,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:09:40,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936196973] [2020-10-29 13:09:40,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:40,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:09:40,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362423019] [2020-10-29 13:09:40,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:09:40,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:40,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:09:40,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:09:40,147 INFO L87 Difference]: Start difference. First operand 1955 states and 3184 transitions. Second operand 5 states. [2020-10-29 13:09:58,430 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 13:10:01,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:10:01,915 INFO L93 Difference]: Finished difference Result 5704 states and 9268 transitions. [2020-10-29 13:10:01,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:10:01,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 468 [2020-10-29 13:10:01,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:10:01,938 INFO L225 Difference]: With dead ends: 5704 [2020-10-29 13:10:01,939 INFO L226 Difference]: Without dead ends: 3820 [2020-10-29 13:10:01,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:10:01,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3820 states. [2020-10-29 13:10:02,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3820 to 3817. [2020-10-29 13:10:02,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3817 states. [2020-10-29 13:10:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3817 states to 3817 states and 6183 transitions. [2020-10-29 13:10:02,131 INFO L78 Accepts]: Start accepts. Automaton has 3817 states and 6183 transitions. Word has length 468 [2020-10-29 13:10:02,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:10:02,132 INFO L481 AbstractCegarLoop]: Abstraction has 3817 states and 6183 transitions. [2020-10-29 13:10:02,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:10:02,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3817 states and 6183 transitions. [2020-10-29 13:10:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-29 13:10:02,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:10:02,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:10:02,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:10:02,144 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:10:02,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:10:02,145 INFO L82 PathProgramCache]: Analyzing trace with hash 457473983, now seen corresponding path program 1 times [2020-10-29 13:10:02,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:10:02,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110033819] [2020-10-29 13:10:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:10:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:02,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:02,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:03,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:03,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:04,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:04,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:04,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:05,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:05,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:05,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:06,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:07,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:07,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-29 13:10:07,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:10:07,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 13:10:07,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:07,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:07,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:10:07,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:10:07,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-29 13:10:07,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:10:09,909 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 13:10:09,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:10:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:09,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:09,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:09,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:10:09,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:10:09,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 13:10:09,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:09,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:09,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:10:09,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:10:09,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:10:09,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:10:10,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110033819] [2020-10-29 13:10:10,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:10:10,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:10:10,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11948468] [2020-10-29 13:10:10,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:10:10,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:10:10,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:10:10,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:10:10,616 INFO L87 Difference]: Start difference. First operand 3817 states and 6183 transitions. Second operand 5 states. [2020-10-29 13:10:28,256 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 13:10:31,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:10:31,714 INFO L93 Difference]: Finished difference Result 11272 states and 18239 transitions. [2020-10-29 13:10:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:10:31,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 470 [2020-10-29 13:10:31,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:10:31,751 INFO L225 Difference]: With dead ends: 11272 [2020-10-29 13:10:31,751 INFO L226 Difference]: Without dead ends: 7508 [2020-10-29 13:10:31,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:10:31,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7508 states. [2020-10-29 13:10:32,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7508 to 7505. [2020-10-29 13:10:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7505 states. [2020-10-29 13:10:32,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7505 states to 7505 states and 12096 transitions. [2020-10-29 13:10:32,137 INFO L78 Accepts]: Start accepts. Automaton has 7505 states and 12096 transitions. Word has length 470 [2020-10-29 13:10:32,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:10:32,138 INFO L481 AbstractCegarLoop]: Abstraction has 7505 states and 12096 transitions. [2020-10-29 13:10:32,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:10:32,138 INFO L276 IsEmpty]: Start isEmpty. Operand 7505 states and 12096 transitions. [2020-10-29 13:10:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-29 13:10:32,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:10:32,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:10:32,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:10:32,157 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:10:32,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:10:32,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1904090803, now seen corresponding path program 1 times [2020-10-29 13:10:32,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:10:32,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992352384] [2020-10-29 13:10:32,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:10:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:32,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:32,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:32,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:32,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:33,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:33,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:34,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:34,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:35,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:36,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:36,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:37,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:37,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-29 13:10:37,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:10:37,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-29 13:10:37,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:37,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:10:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 13:10:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 13:10:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:10:39,921 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 13:10:39,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:10:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:39,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:39,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:39,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:10:39,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:10:39,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:10:39,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:39,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:10:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:10:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:10:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:10:40,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992352384] [2020-10-29 13:10:40,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:10:40,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:10:40,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743928015] [2020-10-29 13:10:40,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:10:40,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:10:40,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:10:40,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:10:40,251 INFO L87 Difference]: Start difference. First operand 7505 states and 12096 transitions. Second operand 4 states. [2020-10-29 13:11:02,754 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification that was a NOOP. DAG size: 423 [2020-10-29 13:11:06,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:11:06,459 INFO L93 Difference]: Finished difference Result 21886 states and 35194 transitions. [2020-10-29 13:11:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:11:06,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 472 [2020-10-29 13:11:06,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:11:06,545 INFO L225 Difference]: With dead ends: 21886 [2020-10-29 13:11:06,545 INFO L226 Difference]: Without dead ends: 14675 [2020-10-29 13:11:06,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:11:06,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14675 states. [2020-10-29 13:11:07,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14675 to 14672. [2020-10-29 13:11:07,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14672 states. [2020-10-29 13:11:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14672 states to 14672 states and 23531 transitions. [2020-10-29 13:11:07,347 INFO L78 Accepts]: Start accepts. Automaton has 14672 states and 23531 transitions. Word has length 472 [2020-10-29 13:11:07,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:11:07,348 INFO L481 AbstractCegarLoop]: Abstraction has 14672 states and 23531 transitions. [2020-10-29 13:11:07,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:11:07,348 INFO L276 IsEmpty]: Start isEmpty. Operand 14672 states and 23531 transitions. [2020-10-29 13:11:07,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-29 13:11:07,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:11:07,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:11:07,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:11:07,381 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:11:07,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:11:07,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1320166224, now seen corresponding path program 1 times [2020-10-29 13:11:07,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:11:07,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116758209] [2020-10-29 13:11:07,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:11:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:07,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:07,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:07,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:07,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:08,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:08,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:08,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:08,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:09,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:09,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:10,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:12,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:12,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-29 13:11:12,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:11:12,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 13:11:12,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:12,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:11:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 13:11:12,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 13:11:12,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:14,870 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 13:11:14,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:11:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:14,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:14,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:14,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:11:14,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:11:14,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 13:11:14,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:14,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:14,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:11:14,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:11:14,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:11:14,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:15,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:11:15,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116758209] [2020-10-29 13:11:15,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:11:15,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:11:15,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968117801] [2020-10-29 13:11:15,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:11:15,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:11:15,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:11:15,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:11:15,228 INFO L87 Difference]: Start difference. First operand 14672 states and 23531 transitions. Second operand 4 states. [2020-10-29 13:11:37,937 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification that was a NOOP. DAG size: 423 [2020-10-29 13:11:41,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:11:41,755 INFO L93 Difference]: Finished difference Result 43347 states and 69455 transitions. [2020-10-29 13:11:41,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:11:41,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 473 [2020-10-29 13:11:41,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:11:41,826 INFO L225 Difference]: With dead ends: 43347 [2020-10-29 13:11:41,826 INFO L226 Difference]: Without dead ends: 29005 [2020-10-29 13:11:41,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:11:41,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29005 states. [2020-10-29 13:11:43,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29005 to 29002. [2020-10-29 13:11:43,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29002 states. [2020-10-29 13:11:43,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29002 states to 29002 states and 46329 transitions. [2020-10-29 13:11:43,069 INFO L78 Accepts]: Start accepts. Automaton has 29002 states and 46329 transitions. Word has length 473 [2020-10-29 13:11:43,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:11:43,070 INFO L481 AbstractCegarLoop]: Abstraction has 29002 states and 46329 transitions. [2020-10-29 13:11:43,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:11:43,070 INFO L276 IsEmpty]: Start isEmpty. Operand 29002 states and 46329 transitions. [2020-10-29 13:11:43,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-29 13:11:43,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:11:43,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:11:43,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:11:43,115 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:11:43,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:11:43,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1699057077, now seen corresponding path program 1 times [2020-10-29 13:11:43,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:11:43,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68962620] [2020-10-29 13:11:43,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:11:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:43,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:43,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:43,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:43,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:43,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:43,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:44,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:44,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:44,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:45,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:45,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:46,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:47,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:47,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:48,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:48,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:48,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-29 13:11:48,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 13:11:48,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 13:11:48,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:48,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:11:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 13:11:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 13:11:48,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:50,531 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 13:11:50,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:11:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:50,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:50,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:50,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:11:50,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:11:50,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:11:50,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:50,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:50,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:11:50,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:11:50,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:11:50,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:11:50,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68962620] [2020-10-29 13:11:50,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:11:50,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:11:50,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578322436] [2020-10-29 13:11:50,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:11:50,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:11:50,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:11:50,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:11:50,822 INFO L87 Difference]: Start difference. First operand 29002 states and 46329 transitions. Second operand 4 states. [2020-10-29 13:12:13,326 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification that was a NOOP. DAG size: 423 [2020-10-29 13:12:17,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:12:17,341 INFO L93 Difference]: Finished difference Result 85516 states and 136461 transitions. [2020-10-29 13:12:17,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:12:17,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 473 [2020-10-29 13:12:17,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:12:17,432 INFO L225 Difference]: With dead ends: 85516 [2020-10-29 13:12:17,432 INFO L226 Difference]: Without dead ends: 57113 [2020-10-29 13:12:17,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:12:17,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57113 states. [2020-10-29 13:12:19,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57113 to 57110. [2020-10-29 13:12:19,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57110 states. [2020-10-29 13:12:19,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57110 states to 57110 states and 90833 transitions. [2020-10-29 13:12:19,774 INFO L78 Accepts]: Start accepts. Automaton has 57110 states and 90833 transitions. Word has length 473 [2020-10-29 13:12:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:12:19,774 INFO L481 AbstractCegarLoop]: Abstraction has 57110 states and 90833 transitions. [2020-10-29 13:12:19,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:12:19,774 INFO L276 IsEmpty]: Start isEmpty. Operand 57110 states and 90833 transitions. [2020-10-29 13:12:19,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-10-29 13:12:19,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:12:19,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:12:19,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:12:19,833 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:12:19,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:12:19,833 INFO L82 PathProgramCache]: Analyzing trace with hash 95507423, now seen corresponding path program 1 times [2020-10-29 13:12:19,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:12:19,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119566218] [2020-10-29 13:12:19,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:12:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:19,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:19,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:20,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:20,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:20,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:20,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:20,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:21,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:21,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:21,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:21,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:24,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:24,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:24,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:24,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:24,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-29 13:12:24,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:12:24,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 13:12:24,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:24,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:12:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 13:12:24,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 13:12:24,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:12:27,276 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-29 13:12:27,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:12:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:27,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:27,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:27,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:12:27,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:12:27,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:12:27,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:27,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:12:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:12:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:12:27,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:12:27,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:12:27,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119566218] [2020-10-29 13:12:27,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:12:27,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:12:27,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357690115] [2020-10-29 13:12:27,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:12:27,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:12:27,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:12:27,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:12:27,555 INFO L87 Difference]: Start difference. First operand 57110 states and 90833 transitions. Second operand 4 states.