/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:00:29,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:00:29,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:00:29,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:00:29,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:00:29,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:00:29,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:00:29,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:00:29,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:00:29,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:00:29,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:00:29,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:00:29,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:00:29,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:00:29,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:00:29,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:00:29,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:00:29,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:00:29,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:00:29,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:00:29,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:00:29,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:00:29,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:00:29,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:00:29,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:00:29,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:00:29,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:00:29,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:00:29,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:00:29,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:00:29,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:00:29,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:00:29,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:00:29,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:00:29,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:00:29,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:00:29,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:00:29,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:00:29,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:00:29,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:00:29,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:00:29,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:00:29,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:00:29,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:00:29,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:00:29,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:00:29,406 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:00:29,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:00:29,407 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:00:29,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:00:29,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:00:29,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:00:29,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:00:29,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:00:29,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:00:29,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:00:29,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:00:29,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:00:29,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:00:29,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:00:29,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:00:29,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:00:29,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:00:29,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:00:29,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:00:29,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:00:29,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:00:29,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:00:29,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:00:29,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:00:29,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:00:29,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:00:29,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:00:29,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:00:29,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:00:29,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:00:29,908 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:00:29,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:00:29,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4036161c5/996ec8f701484bfab41eff81757d0004/FLAG41970b9d3 [2020-10-27 05:00:30,749 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:00:30,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:00:30,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4036161c5/996ec8f701484bfab41eff81757d0004/FLAG41970b9d3 [2020-10-27 05:00:30,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4036161c5/996ec8f701484bfab41eff81757d0004 [2020-10-27 05:00:30,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:00:30,991 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:00:30,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:00:30,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:00:30,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:00:31,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:00:30" (1/1) ... [2020-10-27 05:00:31,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a1e375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:31, skipping insertion in model container [2020-10-27 05:00:31,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:00:30" (1/1) ... [2020-10-27 05:00:31,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:00:31,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:00:32,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:00:32,119 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:00:32,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:00:32,588 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:00:32,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:32 WrapperNode [2020-10-27 05:00:32,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:00:32,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:00:32,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:00:32,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:00:32,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:32" (1/1) ... [2020-10-27 05:00:32,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:32" (1/1) ... [2020-10-27 05:00:32,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:32" (1/1) ... [2020-10-27 05:00:32,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:32" (1/1) ... [2020-10-27 05:00:32,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:32" (1/1) ... [2020-10-27 05:00:32,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:32" (1/1) ... [2020-10-27 05:00:32,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:32" (1/1) ... [2020-10-27 05:00:32,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:00:32,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:00:32,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:00:32,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:00:32,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:00:32,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:00:32,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:00:32,875 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:00:32,875 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:00:32,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:00:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:00:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:00:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:00:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:00:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:00:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:00:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:00:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:00:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:00:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:00:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:00:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:00:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:00:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:00:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:00:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:00:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:00:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:00:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:00:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:00:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:00:32,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:00:32,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:00:32,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:00:35,233 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:00:35,234 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:00:35,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:00:35 BoogieIcfgContainer [2020-10-27 05:00:35,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:00:35,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:00:35,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:00:35,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:00:35,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:00:30" (1/3) ... [2020-10-27 05:00:35,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1790dfc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:00:35, skipping insertion in model container [2020-10-27 05:00:35,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:32" (2/3) ... [2020-10-27 05:00:35,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1790dfc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:00:35, skipping insertion in model container [2020-10-27 05:00:35,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:00:35" (3/3) ... [2020-10-27 05:00:35,246 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 05:00:35,259 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:00:35,265 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:00:35,279 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:00:35,312 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:00:35,313 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:00:35,313 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:00:35,313 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:00:35,313 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:00:35,313 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:00:35,313 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:00:35,314 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:00:35,347 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states. [2020-10-27 05:00:35,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-27 05:00:35,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:35,376 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] [2020-10-27 05:00:35,377 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:35,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1021088061, now seen corresponding path program 1 times [2020-10-27 05:00:35,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:35,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387993107] [2020-10-27 05:00:35,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:36,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:37,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:37,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:38,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:38,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:38,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:38,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:38,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:39,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:39,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:41,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:41,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:41,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 05:00:41,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:00:41,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:00:41,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:00:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:00:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 05:00:41,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:00:42,141 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 05:00:42,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:42,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:42,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:42,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:42,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:42,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:00:42,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:42,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:42,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:42,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:42,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:00:42,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387993107] [2020-10-27 05:00:42,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:42,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:00:42,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159187366] [2020-10-27 05:00:42,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:00:42,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:42,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:00:42,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:00:42,396 INFO L87 Difference]: Start difference. First operand 636 states. Second operand 5 states. [2020-10-27 05:00:49,259 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 05:00:51,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:51,238 INFO L93 Difference]: Finished difference Result 1857 states and 3332 transitions. [2020-10-27 05:00:51,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:00:51,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2020-10-27 05:00:51,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:51,282 INFO L225 Difference]: With dead ends: 1857 [2020-10-27 05:00:51,282 INFO L226 Difference]: Without dead ends: 1226 [2020-10-27 05:00:51,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:00:51,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2020-10-27 05:00:51,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1200. [2020-10-27 05:00:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2020-10-27 05:00:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1864 transitions. [2020-10-27 05:00:51,492 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1864 transitions. Word has length 240 [2020-10-27 05:00:51,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:00:51,497 INFO L481 AbstractCegarLoop]: Abstraction has 1200 states and 1864 transitions. [2020-10-27 05:00:51,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:00:51,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1864 transitions. [2020-10-27 05:00:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-27 05:00:51,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:51,515 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] [2020-10-27 05:00:51,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:00:51,516 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:51,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:51,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1852953666, now seen corresponding path program 1 times [2020-10-27 05:00:51,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:51,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235384361] [2020-10-27 05:00:51,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:51,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:51,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:51,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:52,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:52,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:52,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:52,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:52,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:53,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:53,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:54,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:54,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:55,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:55,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:56,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:56,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 05:00:56,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:00:56,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:00:56,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:00:56,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:00:56,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 05:00:56,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:57,423 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 05:00:57,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:57,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:57,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:57,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:57,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:57,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:00:57,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:57,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:00:57,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235384361] [2020-10-27 05:00:57,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:57,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:00:57,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093464396] [2020-10-27 05:00:57,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:00:57,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:57,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:00:57,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:00:57,606 INFO L87 Difference]: Start difference. First operand 1200 states and 1864 transitions. Second operand 5 states. [2020-10-27 05:01:03,609 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 05:01:05,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:05,463 INFO L93 Difference]: Finished difference Result 3431 states and 5300 transitions. [2020-10-27 05:01:05,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:05,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-10-27 05:01:05,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:05,480 INFO L225 Difference]: With dead ends: 3431 [2020-10-27 05:01:05,480 INFO L226 Difference]: Without dead ends: 2311 [2020-10-27 05:01:05,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:05,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2020-10-27 05:01:05,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2272. [2020-10-27 05:01:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2272 states. [2020-10-27 05:01:05,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 3495 transitions. [2020-10-27 05:01:05,605 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 3495 transitions. Word has length 242 [2020-10-27 05:01:05,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:05,605 INFO L481 AbstractCegarLoop]: Abstraction has 2272 states and 3495 transitions. [2020-10-27 05:01:05,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:05,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 3495 transitions. [2020-10-27 05:01:05,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-27 05:01:05,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:05,614 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] [2020-10-27 05:01:05,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:01:05,614 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:05,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:05,615 INFO L82 PathProgramCache]: Analyzing trace with hash 865048295, now seen corresponding path program 1 times [2020-10-27 05:01:05,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:05,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844314720] [2020-10-27 05:01:05,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:05,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:05,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:05,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:05,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:06,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:06,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:06,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:06,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:06,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:06,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:07,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:10,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:10,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:10,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:10,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:10,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-27 05:01:10,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:01:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 05:01:10,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 05:01:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:01:11,466 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 05:01:11,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:11,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:11,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:11,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:11,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:11,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:01:11,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:11,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:11,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:01:11,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844314720] [2020-10-27 05:01:11,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:11,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:11,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255071883] [2020-10-27 05:01:11,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:11,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:11,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:11,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:11,674 INFO L87 Difference]: Start difference. First operand 2272 states and 3495 transitions. Second operand 5 states. [2020-10-27 05:01:18,193 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 05:01:20,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:20,181 INFO L93 Difference]: Finished difference Result 6490 states and 9929 transitions. [2020-10-27 05:01:20,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:20,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-10-27 05:01:20,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:20,212 INFO L225 Difference]: With dead ends: 6490 [2020-10-27 05:01:20,212 INFO L226 Difference]: Without dead ends: 4437 [2020-10-27 05:01:20,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:20,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4437 states. [2020-10-27 05:01:20,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4437 to 4422. [2020-10-27 05:01:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4422 states. [2020-10-27 05:01:20,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4422 states to 4422 states and 6765 transitions. [2020-10-27 05:01:20,480 INFO L78 Accepts]: Start accepts. Automaton has 4422 states and 6765 transitions. Word has length 244 [2020-10-27 05:01:20,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:20,480 INFO L481 AbstractCegarLoop]: Abstraction has 4422 states and 6765 transitions. [2020-10-27 05:01:20,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:20,480 INFO L276 IsEmpty]: Start isEmpty. Operand 4422 states and 6765 transitions. [2020-10-27 05:01:20,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-27 05:01:20,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:20,492 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] [2020-10-27 05:01:20,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:01:20,493 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:20,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:20,493 INFO L82 PathProgramCache]: Analyzing trace with hash -136295082, now seen corresponding path program 1 times [2020-10-27 05:01:20,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:20,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046354775] [2020-10-27 05:01:20,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:20,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:20,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:20,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:20,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:20,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:21,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:21,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:21,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:21,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:24,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:24,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:24,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:25,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:25,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-27 05:01:25,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:01:25,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 05:01:25,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 05:01:25,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:26,398 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 05:01:26,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:26,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:26,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:26,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:26,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:26,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:01:26,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:26,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:01:26,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046354775] [2020-10-27 05:01:26,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:26,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:26,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378667543] [2020-10-27 05:01:26,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:26,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:26,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:26,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:26,633 INFO L87 Difference]: Start difference. First operand 4422 states and 6765 transitions. Second operand 5 states. [2020-10-27 05:01:33,085 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 05:01:35,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:35,190 INFO L93 Difference]: Finished difference Result 12619 states and 19179 transitions. [2020-10-27 05:01:35,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:35,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-27 05:01:35,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:35,234 INFO L225 Difference]: With dead ends: 12619 [2020-10-27 05:01:35,234 INFO L226 Difference]: Without dead ends: 8583 [2020-10-27 05:01:35,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:35,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8583 states. [2020-10-27 05:01:35,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8583 to 8477. [2020-10-27 05:01:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8477 states. [2020-10-27 05:01:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8477 states to 8477 states and 12869 transitions. [2020-10-27 05:01:36,015 INFO L78 Accepts]: Start accepts. Automaton has 8477 states and 12869 transitions. Word has length 246 [2020-10-27 05:01:36,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:36,015 INFO L481 AbstractCegarLoop]: Abstraction has 8477 states and 12869 transitions. [2020-10-27 05:01:36,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:36,016 INFO L276 IsEmpty]: Start isEmpty. Operand 8477 states and 12869 transitions. [2020-10-27 05:01:36,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-27 05:01:36,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:36,041 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] [2020-10-27 05:01:36,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:01:36,041 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:36,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:36,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1879518855, now seen corresponding path program 1 times [2020-10-27 05:01:36,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:36,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119050801] [2020-10-27 05:01:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:36,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:37,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:37,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:37,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:37,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:38,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:41,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:41,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-27 05:01:41,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:01:41,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-27 05:01:41,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:41,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 05:01:41,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:41,911 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 05:01:41,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:41,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:41,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:41,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:41,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:41,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:01:41,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:01:42,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119050801] [2020-10-27 05:01:42,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:42,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:42,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473101244] [2020-10-27 05:01:42,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:42,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:42,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:42,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:42,094 INFO L87 Difference]: Start difference. First operand 8477 states and 12869 transitions. Second operand 5 states. [2020-10-27 05:01:48,214 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 05:01:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:50,188 INFO L93 Difference]: Finished difference Result 24746 states and 37446 transitions. [2020-10-27 05:01:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:50,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-27 05:01:50,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:50,249 INFO L225 Difference]: With dead ends: 24746 [2020-10-27 05:01:50,250 INFO L226 Difference]: Without dead ends: 16481 [2020-10-27 05:01:50,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:50,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16481 states. [2020-10-27 05:01:51,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16481 to 16468. [2020-10-27 05:01:51,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16468 states. [2020-10-27 05:01:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16468 states to 16468 states and 24763 transitions. [2020-10-27 05:01:51,281 INFO L78 Accepts]: Start accepts. Automaton has 16468 states and 24763 transitions. Word has length 248 [2020-10-27 05:01:51,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:51,282 INFO L481 AbstractCegarLoop]: Abstraction has 16468 states and 24763 transitions. [2020-10-27 05:01:51,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 16468 states and 24763 transitions. [2020-10-27 05:01:51,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-27 05:01:51,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:51,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:51,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:01:51,318 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:51,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:51,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1031021919, now seen corresponding path program 1 times [2020-10-27 05:01:51,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:51,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791577228] [2020-10-27 05:01:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:51,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:51,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:51,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:51,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:51,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:51,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:51,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:51,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:52,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:52,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:52,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:52,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:52,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:54,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:54,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:54,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:56,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:56,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-27 05:01:56,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:01:56,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:01:56,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 05:01:56,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:57,088 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 05:01:57,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:57,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:57,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:57,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:57,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:57,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:01:57,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:57,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:57,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:57,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:57,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:01:57,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791577228] [2020-10-27 05:01:57,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:57,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:57,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917455710] [2020-10-27 05:01:57,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:57,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:57,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:57,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:57,221 INFO L87 Difference]: Start difference. First operand 16468 states and 24763 transitions. Second operand 5 states. [2020-10-27 05:02:03,909 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 05:02:06,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:06,338 INFO L93 Difference]: Finished difference Result 47980 states and 71919 transitions. [2020-10-27 05:02:06,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:06,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-27 05:02:06,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:06,422 INFO L225 Difference]: With dead ends: 47980 [2020-10-27 05:02:06,422 INFO L226 Difference]: Without dead ends: 32150 [2020-10-27 05:02:06,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:06,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32150 states. [2020-10-27 05:02:08,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32150 to 32056. [2020-10-27 05:02:08,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32056 states. [2020-10-27 05:02:08,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32056 states to 32056 states and 47713 transitions. [2020-10-27 05:02:08,361 INFO L78 Accepts]: Start accepts. Automaton has 32056 states and 47713 transitions. Word has length 250 [2020-10-27 05:02:08,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:08,361 INFO L481 AbstractCegarLoop]: Abstraction has 32056 states and 47713 transitions. [2020-10-27 05:02:08,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:08,361 INFO L276 IsEmpty]: Start isEmpty. Operand 32056 states and 47713 transitions. [2020-10-27 05:02:08,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 05:02:08,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:08,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:02:08,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:02:08,412 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:08,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:08,412 INFO L82 PathProgramCache]: Analyzing trace with hash 815322889, now seen corresponding path program 1 times [2020-10-27 05:02:08,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:08,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128736913] [2020-10-27 05:02:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:08,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:08,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:08,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:08,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:08,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:08,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:08,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:09,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:09,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:09,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:12,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:12,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:12,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:12,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:13,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:13,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 05:02:13,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:02:13,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:02:13,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 05:02:13,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:14,270 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 05:02:14,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:14,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:14,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:14,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:14,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:14,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:02:14,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:14,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:14,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:02:14,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128736913] [2020-10-27 05:02:14,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:14,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:14,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579450244] [2020-10-27 05:02:14,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:14,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:14,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:14,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:14,464 INFO L87 Difference]: Start difference. First operand 32056 states and 47713 transitions. Second operand 5 states. [2020-10-27 05:02:23,095 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 05:02:26,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:26,338 INFO L93 Difference]: Finished difference Result 93132 states and 138034 transitions. [2020-10-27 05:02:26,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:26,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-27 05:02:26,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:26,491 INFO L225 Difference]: With dead ends: 93132 [2020-10-27 05:02:26,491 INFO L226 Difference]: Without dead ends: 62824 [2020-10-27 05:02:26,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:26,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62824 states. [2020-10-27 05:02:30,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62824 to 62530. [2020-10-27 05:02:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62530 states. [2020-10-27 05:02:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62530 states to 62530 states and 92315 transitions. [2020-10-27 05:02:31,014 INFO L78 Accepts]: Start accepts. Automaton has 62530 states and 92315 transitions. Word has length 252 [2020-10-27 05:02:31,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:31,014 INFO L481 AbstractCegarLoop]: Abstraction has 62530 states and 92315 transitions. [2020-10-27 05:02:31,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:31,014 INFO L276 IsEmpty]: Start isEmpty. Operand 62530 states and 92315 transitions. [2020-10-27 05:02:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-27 05:02:31,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:31,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:02:31,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:02:31,073 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:31,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:31,074 INFO L82 PathProgramCache]: Analyzing trace with hash 2079578435, now seen corresponding path program 1 times [2020-10-27 05:02:31,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:31,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068434792] [2020-10-27 05:02:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:31,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:32,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:32,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:32,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:32,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:33,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:33,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:36,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:36,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-27 05:02:36,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:02:36,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:02:36,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 05:02:36,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:36,987 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 05:02:36,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:37,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:37,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:37,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:37,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:37,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:02:37,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:37,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:37,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:02:37,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068434792] [2020-10-27 05:02:37,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:37,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:37,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499311887] [2020-10-27 05:02:37,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:37,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:37,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:37,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:37,096 INFO L87 Difference]: Start difference. First operand 62530 states and 92315 transitions. Second operand 5 states. [2020-10-27 05:02:48,221 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 05:02:52,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:52,569 INFO L93 Difference]: Finished difference Result 185128 states and 272968 transitions. [2020-10-27 05:02:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:52,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-10-27 05:02:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:52,845 INFO L225 Difference]: With dead ends: 185128 [2020-10-27 05:02:52,845 INFO L226 Difference]: Without dead ends: 122766 [2020-10-27 05:02:53,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:53,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122766 states. [2020-10-27 05:03:01,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122766 to 122716. [2020-10-27 05:03:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122716 states. [2020-10-27 05:03:01,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122716 states to 122716 states and 179684 transitions. [2020-10-27 05:03:01,954 INFO L78 Accepts]: Start accepts. Automaton has 122716 states and 179684 transitions. Word has length 254 [2020-10-27 05:03:01,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:01,954 INFO L481 AbstractCegarLoop]: Abstraction has 122716 states and 179684 transitions. [2020-10-27 05:03:01,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:01,955 INFO L276 IsEmpty]: Start isEmpty. Operand 122716 states and 179684 transitions. [2020-10-27 05:03:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-27 05:03:02,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:02,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:02,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:03:02,330 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:02,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:02,331 INFO L82 PathProgramCache]: Analyzing trace with hash -189264252, now seen corresponding path program 1 times [2020-10-27 05:03:02,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:02,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183462637] [2020-10-27 05:03:02,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:02,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:02,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:02,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:02,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:02,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:02,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:02,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:02,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:03,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:03,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:03,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:07,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:07,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-27 05:03:07,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:03:07,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:03:07,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:07,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:07,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:07,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 05:03:07,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:08,119 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 05:03:08,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:08,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:08,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:08,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:08,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:08,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:03:08,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:08,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:08,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:03:08,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183462637] [2020-10-27 05:03:08,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:08,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:08,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937201515] [2020-10-27 05:03:08,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:08,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:08,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:08,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:08,274 INFO L87 Difference]: Start difference. First operand 122716 states and 179684 transitions. Second operand 5 states. [2020-10-27 05:03:24,986 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-27 05:03:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:32,290 INFO L93 Difference]: Finished difference Result 360220 states and 526399 transitions. [2020-10-27 05:03:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:32,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-10-27 05:03:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:32,860 INFO L225 Difference]: With dead ends: 360220 [2020-10-27 05:03:32,861 INFO L226 Difference]: Without dead ends: 239720 [2020-10-27 05:03:33,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:33,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239720 states. [2020-10-27 05:03:50,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239720 to 239186. [2020-10-27 05:03:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239186 states. [2020-10-27 05:03:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239186 states to 239186 states and 346977 transitions. [2020-10-27 05:03:51,167 INFO L78 Accepts]: Start accepts. Automaton has 239186 states and 346977 transitions. Word has length 256 [2020-10-27 05:03:51,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:51,168 INFO L481 AbstractCegarLoop]: Abstraction has 239186 states and 346977 transitions. [2020-10-27 05:03:51,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:51,168 INFO L276 IsEmpty]: Start isEmpty. Operand 239186 states and 346977 transitions. [2020-10-27 05:03:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-27 05:03:51,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:51,804 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] [2020-10-27 05:03:51,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:03:51,805 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:51,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:51,805 INFO L82 PathProgramCache]: Analyzing trace with hash -561962881, now seen corresponding path program 1 times [2020-10-27 05:03:51,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:51,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102444686] [2020-10-27 05:03:51,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:51,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:51,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:52,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:52,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:52,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:52,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:52,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:52,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:52,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:52,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:52,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:56,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:56,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-27 05:03:56,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:03:56,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:03:56,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:56,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:56,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:56,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 05:03:56,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:57,655 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-27 05:03:57,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:57,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:57,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:57,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:57,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:57,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:03:57,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:57,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:57,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:57,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:03:57,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102444686] [2020-10-27 05:03:57,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:57,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:57,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362627912] [2020-10-27 05:03:57,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:57,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:57,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:57,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:57,807 INFO L87 Difference]: Start difference. First operand 239186 states and 346977 transitions. Second operand 5 states.