/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:13:13,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:13:13,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:13:13,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:13:13,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:13:13,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:13:13,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:13:13,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:13:13,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:13:13,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:13:13,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:13:13,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:13:13,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:13:13,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:13:13,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:13:13,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:13:13,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:13:13,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:13:13,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:13:13,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:13:13,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:13:13,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:13:13,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:13:13,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:13:13,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:13:13,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:13:13,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:13:13,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:13:13,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:13:13,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:13:13,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:13:13,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:13:13,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:13:13,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:13:13,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:13:13,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:13:13,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:13:13,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:13:13,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:13:13,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:13:13,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:13:13,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 18:13:13,448 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:13:13,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:13:13,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:13:13,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:13:13,450 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:13:13,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:13:13,451 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:13:13,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:13:13,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:13:13,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:13:13,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:13:13,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:13:13,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:13:13,455 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:13:13,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:13:13,456 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:13:13,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:13:13,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:13:13,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:13:13,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:13:13,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:13:13,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:13:13,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:13:13,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:13:13,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:13:13,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:13:13,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:13:13,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:13:13,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:13:13,459 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:13:13,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:13:13,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:13:13,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:13:13,926 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:13:13,927 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:13:13,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 18:13:14,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d6e2c90b/e4c566cb975e49e685ae21d26178b108/FLAGa89b489bc [2020-10-28 18:13:14,767 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:13:14,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 18:13:14,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d6e2c90b/e4c566cb975e49e685ae21d26178b108/FLAGa89b489bc [2020-10-28 18:13:15,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d6e2c90b/e4c566cb975e49e685ae21d26178b108 [2020-10-28 18:13:15,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:13:15,062 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:13:15,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:13:15,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:13:15,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:13:15,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:13:15" (1/1) ... [2020-10-28 18:13:15,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa641a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:13:15, skipping insertion in model container [2020-10-28 18:13:15,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:13:15" (1/1) ... [2020-10-28 18:13:15,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:13:15,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:13:15,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:13:15,942 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:13:16,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:13:16,273 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:13:16,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:13:16 WrapperNode [2020-10-28 18:13:16,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:13:16,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:13:16,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:13:16,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:13:16,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:13:16" (1/1) ... [2020-10-28 18:13:16,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:13:16" (1/1) ... [2020-10-28 18:13:16,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:13:16" (1/1) ... [2020-10-28 18:13:16,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:13:16" (1/1) ... [2020-10-28 18:13:16,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:13:16" (1/1) ... [2020-10-28 18:13:16,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:13:16" (1/1) ... [2020-10-28 18:13:16,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:13:16" (1/1) ... [2020-10-28 18:13:16,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:13:16,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:13:16,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:13:16,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:13:16,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:13:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:13:16,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:13:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:13:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:13:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:13:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:13:16,519 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:13:16,519 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:13:16,519 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:13:16,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:13:16,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:13:16,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:13:16,519 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:13:16,520 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:13:16,520 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:13:16,520 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:13:16,520 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:13:16,520 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:13:16,520 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:13:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:13:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:13:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:13:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:13:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:13:16,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:13:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:13:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:13:16,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:13:18,106 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:13:18,106 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:13:18,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:13:18 BoogieIcfgContainer [2020-10-28 18:13:18,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:13:18,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:13:18,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:13:18,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:13:18,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:13:15" (1/3) ... [2020-10-28 18:13:18,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c06936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:13:18, skipping insertion in model container [2020-10-28 18:13:18,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:13:16" (2/3) ... [2020-10-28 18:13:18,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c06936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:13:18, skipping insertion in model container [2020-10-28 18:13:18,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:13:18" (3/3) ... [2020-10-28 18:13:18,119 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 18:13:18,132 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:13:18,137 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:13:18,151 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:13:18,180 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:13:18,180 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:13:18,180 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:13:18,181 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:13:18,181 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:13:18,181 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:13:18,181 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:13:18,181 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:13:18,208 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states. [2020-10-28 18:13:18,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-28 18:13:18,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:18,227 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] [2020-10-28 18:13:18,227 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:18,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:18,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1514705107, now seen corresponding path program 1 times [2020-10-28 18:13:18,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:18,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682769713] [2020-10-28 18:13:18,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:19,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:19,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:19,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:19,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:19,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:20,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:20,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:20,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:20,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:23,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:23,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 18:13:23,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:13:23,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-28 18:13:23,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:23,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:23,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:13:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 18:13:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 18:13:23,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:13:24,333 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:13:24,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:24,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:24,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:24,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:24,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:24,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 18:13:24,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:24,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:24,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:24,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:24,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:13:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:24,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682769713] [2020-10-28 18:13:24,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:24,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:13:24,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303038065] [2020-10-28 18:13:24,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:13:24,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:24,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:13:24,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:13:24,463 INFO L87 Difference]: Start difference. First operand 386 states. Second operand 4 states. [2020-10-28 18:13:24,918 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:13:27,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:27,710 INFO L93 Difference]: Finished difference Result 694 states and 1234 transitions. [2020-10-28 18:13:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:13:27,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-10-28 18:13:27,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:27,730 INFO L225 Difference]: With dead ends: 694 [2020-10-28 18:13:27,730 INFO L226 Difference]: Without dead ends: 540 [2020-10-28 18:13:27,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:27,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-10-28 18:13:27,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 537. [2020-10-28 18:13:27,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-10-28 18:13:27,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 790 transitions. [2020-10-28 18:13:27,868 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 790 transitions. Word has length 144 [2020-10-28 18:13:27,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:27,869 INFO L481 AbstractCegarLoop]: Abstraction has 537 states and 790 transitions. [2020-10-28 18:13:27,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:13:27,870 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 790 transitions. [2020-10-28 18:13:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-28 18:13:27,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:27,883 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] [2020-10-28 18:13:27,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:13:27,883 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:27,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:27,885 INFO L82 PathProgramCache]: Analyzing trace with hash 879348149, now seen corresponding path program 1 times [2020-10-28 18:13:27,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:27,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260670426] [2020-10-28 18:13:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:28,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:28,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:28,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:28,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:28,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:28,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:28,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:28,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:28,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:28,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:31,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:32,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:33,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:33,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 18:13:33,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:13:33,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-28 18:13:33,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:33,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:13:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 18:13:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 18:13:33,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:13:33,538 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:13:33,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:33,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:33,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:33,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:33,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:33,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:13:33,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:33,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:33,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:33,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260670426] [2020-10-28 18:13:33,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:33,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:13:33,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285894350] [2020-10-28 18:13:33,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:13:33,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:33,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:13:33,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:13:33,611 INFO L87 Difference]: Start difference. First operand 537 states and 790 transitions. Second operand 4 states. [2020-10-28 18:13:34,037 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:13:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:36,468 INFO L93 Difference]: Finished difference Result 1073 states and 1629 transitions. [2020-10-28 18:13:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:13:36,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-10-28 18:13:36,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:36,478 INFO L225 Difference]: With dead ends: 1073 [2020-10-28 18:13:36,479 INFO L226 Difference]: Without dead ends: 882 [2020-10-28 18:13:36,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:36,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2020-10-28 18:13:36,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 879. [2020-10-28 18:13:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-10-28 18:13:36,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1314 transitions. [2020-10-28 18:13:36,567 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1314 transitions. Word has length 144 [2020-10-28 18:13:36,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:36,569 INFO L481 AbstractCegarLoop]: Abstraction has 879 states and 1314 transitions. [2020-10-28 18:13:36,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:13:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1314 transitions. [2020-10-28 18:13:36,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-28 18:13:36,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:36,574 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] [2020-10-28 18:13:36,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:13:36,574 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:36,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:36,580 INFO L82 PathProgramCache]: Analyzing trace with hash 868851084, now seen corresponding path program 1 times [2020-10-28 18:13:36,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:36,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069070370] [2020-10-28 18:13:36,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:36,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:36,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:37,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:37,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:37,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:37,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:37,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:37,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:37,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:38,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:38,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:38,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:39,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:41,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:41,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 18:13:41,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:13:41,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:13:41,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:41,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:13:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:13:41,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 18:13:41,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:42,354 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:13:42,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:42,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:42,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:42,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:42,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:42,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 18:13:42,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:42,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:42,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:42,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:42,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:42,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:13:42,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:42,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069070370] [2020-10-28 18:13:42,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:42,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:13:42,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768697035] [2020-10-28 18:13:42,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:13:42,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:42,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:13:42,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:42,472 INFO L87 Difference]: Start difference. First operand 879 states and 1314 transitions. Second operand 5 states. [2020-10-28 18:13:45,115 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:13:46,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:46,337 INFO L93 Difference]: Finished difference Result 2568 states and 3835 transitions. [2020-10-28 18:13:46,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:13:46,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-28 18:13:46,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:46,349 INFO L225 Difference]: With dead ends: 2568 [2020-10-28 18:13:46,349 INFO L226 Difference]: Without dead ends: 1702 [2020-10-28 18:13:46,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:13:46,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-28 18:13:46,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1669. [2020-10-28 18:13:46,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1669 states. [2020-10-28 18:13:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2478 transitions. [2020-10-28 18:13:46,444 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2478 transitions. Word has length 144 [2020-10-28 18:13:46,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:46,444 INFO L481 AbstractCegarLoop]: Abstraction has 1669 states and 2478 transitions. [2020-10-28 18:13:46,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:13:46,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2478 transitions. [2020-10-28 18:13:46,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 18:13:46,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:46,449 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] [2020-10-28 18:13:46,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:13:46,449 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:46,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:46,450 INFO L82 PathProgramCache]: Analyzing trace with hash 2136663761, now seen corresponding path program 1 times [2020-10-28 18:13:46,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:46,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530112109] [2020-10-28 18:13:46,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:46,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:46,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:46,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:46,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:46,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:46,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:47,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:47,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:47,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:47,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:48,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:51,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:51,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 18:13:51,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:13:51,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:13:51,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:51,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:51,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:13:51,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:13:51,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 18:13:51,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:51,973 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:13:51,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:51,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:51,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:51,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:51,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:51,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:13:51,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:51,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:51,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:51,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:51,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:51,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:52,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:52,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530112109] [2020-10-28 18:13:52,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:52,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:13:52,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495893645] [2020-10-28 18:13:52,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:13:52,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:52,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:13:52,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:52,071 INFO L87 Difference]: Start difference. First operand 1669 states and 2478 transitions. Second operand 5 states. [2020-10-28 18:13:54,589 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:13:55,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:55,829 INFO L93 Difference]: Finished difference Result 4855 states and 7190 transitions. [2020-10-28 18:13:55,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:13:55,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-28 18:13:55,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:55,850 INFO L225 Difference]: With dead ends: 4855 [2020-10-28 18:13:55,851 INFO L226 Difference]: Without dead ends: 3218 [2020-10-28 18:13:55,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:13:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2020-10-28 18:13:56,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3185. [2020-10-28 18:13:56,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3185 states. [2020-10-28 18:13:56,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 4682 transitions. [2020-10-28 18:13:56,052 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 4682 transitions. Word has length 145 [2020-10-28 18:13:56,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:56,052 INFO L481 AbstractCegarLoop]: Abstraction has 3185 states and 4682 transitions. [2020-10-28 18:13:56,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:13:56,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 4682 transitions. [2020-10-28 18:13:56,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 18:13:56,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:56,058 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] [2020-10-28 18:13:56,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:13:56,059 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:56,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:56,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1691912174, now seen corresponding path program 1 times [2020-10-28 18:13:56,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:56,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030110117] [2020-10-28 18:13:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:56,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:56,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:56,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:56,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:56,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:56,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:56,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:56,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:01,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:01,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 18:14:01,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:14:01,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:14:01,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:01,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:14:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:14:01,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 18:14:01,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:01,618 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:14:01,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:01,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:01,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:01,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:01,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:01,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:14:01,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:01,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:01,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:01,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:01,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:01,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:01,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030110117] [2020-10-28 18:14:01,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:01,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:01,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153835051] [2020-10-28 18:14:01,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:14:01,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:01,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:14:01,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:01,711 INFO L87 Difference]: Start difference. First operand 3185 states and 4682 transitions. Second operand 5 states. [2020-10-28 18:14:04,609 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:14:06,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:06,113 INFO L93 Difference]: Finished difference Result 9055 states and 13327 transitions. [2020-10-28 18:14:06,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:14:06,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-28 18:14:06,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:06,143 INFO L225 Difference]: With dead ends: 9055 [2020-10-28 18:14:06,143 INFO L226 Difference]: Without dead ends: 6144 [2020-10-28 18:14:06,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:14:06,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6144 states. [2020-10-28 18:14:06,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6144 to 6121. [2020-10-28 18:14:06,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6121 states. [2020-10-28 18:14:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6121 states to 6121 states and 8879 transitions. [2020-10-28 18:14:06,531 INFO L78 Accepts]: Start accepts. Automaton has 6121 states and 8879 transitions. Word has length 146 [2020-10-28 18:14:06,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:06,531 INFO L481 AbstractCegarLoop]: Abstraction has 6121 states and 8879 transitions. [2020-10-28 18:14:06,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:14:06,531 INFO L276 IsEmpty]: Start isEmpty. Operand 6121 states and 8879 transitions. [2020-10-28 18:14:06,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 18:14:06,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:06,542 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] [2020-10-28 18:14:06,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:14:06,542 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:06,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:06,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1866797646, now seen corresponding path program 1 times [2020-10-28 18:14:06,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:06,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527825475] [2020-10-28 18:14:06,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:06,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:06,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:06,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:06,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:07,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:07,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:07,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:10,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:10,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:10,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:10,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:11,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:11,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 18:14:11,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:14:11,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:14:11,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:11,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:11,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:14:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:14:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 18:14:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:12,120 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:14:12,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:12,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:12,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:12,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:12,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:12,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:14:12,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:12,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:12,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:12,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:12,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:12,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:12,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:12,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527825475] [2020-10-28 18:14:12,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:12,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:12,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249340367] [2020-10-28 18:14:12,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:14:12,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:12,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:14:12,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:12,220 INFO L87 Difference]: Start difference. First operand 6121 states and 8879 transitions. Second operand 5 states. [2020-10-28 18:14:15,429 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:14:17,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:17,104 INFO L93 Difference]: Finished difference Result 17363 states and 25227 transitions. [2020-10-28 18:14:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:14:17,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-28 18:14:17,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:17,158 INFO L225 Difference]: With dead ends: 17363 [2020-10-28 18:14:17,158 INFO L226 Difference]: Without dead ends: 11854 [2020-10-28 18:14:17,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:14:17,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11854 states. [2020-10-28 18:14:17,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11854 to 11813. [2020-10-28 18:14:17,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11813 states. [2020-10-28 18:14:18,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11813 states to 11813 states and 16933 transitions. [2020-10-28 18:14:18,016 INFO L78 Accepts]: Start accepts. Automaton has 11813 states and 16933 transitions. Word has length 147 [2020-10-28 18:14:18,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:18,017 INFO L481 AbstractCegarLoop]: Abstraction has 11813 states and 16933 transitions. [2020-10-28 18:14:18,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:14:18,017 INFO L276 IsEmpty]: Start isEmpty. Operand 11813 states and 16933 transitions. [2020-10-28 18:14:18,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 18:14:18,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:18,035 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] [2020-10-28 18:14:18,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:14:18,036 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:18,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:18,036 INFO L82 PathProgramCache]: Analyzing trace with hash -445293648, now seen corresponding path program 1 times [2020-10-28 18:14:18,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:18,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390026456] [2020-10-28 18:14:18,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:18,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:18,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:18,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:18,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:18,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:18,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:18,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:22,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:23,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:23,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 18:14:23,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:14:23,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 18:14:23,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:23,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:23,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:14:23,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:14:23,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 18:14:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:23,574 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:14:23,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:23,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:23,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:23,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:23,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:23,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:14:23,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:23,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:23,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:23,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:23,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:23,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:23,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:23,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390026456] [2020-10-28 18:14:23,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:23,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:23,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131766493] [2020-10-28 18:14:23,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:14:23,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:23,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:14:23,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:23,655 INFO L87 Difference]: Start difference. First operand 11813 states and 16933 transitions. Second operand 5 states. [2020-10-28 18:14:26,676 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:14:27,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:27,925 INFO L93 Difference]: Finished difference Result 31947 states and 45557 transitions. [2020-10-28 18:14:27,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:14:27,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-28 18:14:27,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:27,979 INFO L225 Difference]: With dead ends: 31947 [2020-10-28 18:14:27,979 INFO L226 Difference]: Without dead ends: 20302 [2020-10-28 18:14:28,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:14:28,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20302 states. [2020-10-28 18:14:29,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20302 to 20261. [2020-10-28 18:14:29,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20261 states. [2020-10-28 18:14:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20261 states to 20261 states and 28521 transitions. [2020-10-28 18:14:29,172 INFO L78 Accepts]: Start accepts. Automaton has 20261 states and 28521 transitions. Word has length 148 [2020-10-28 18:14:29,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:29,172 INFO L481 AbstractCegarLoop]: Abstraction has 20261 states and 28521 transitions. [2020-10-28 18:14:29,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:14:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 20261 states and 28521 transitions. [2020-10-28 18:14:29,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 18:14:29,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:29,203 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] [2020-10-28 18:14:29,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:14:29,204 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:29,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:29,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1553727763, now seen corresponding path program 1 times [2020-10-28 18:14:29,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:29,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075778389] [2020-10-28 18:14:29,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:29,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:29,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:29,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:29,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:29,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:29,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:34,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:34,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 18:14:34,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:14:34,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:14:34,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:34,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:14:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 18:14:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 18:14:34,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:34,731 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:14:34,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:34,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:34,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:34,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:34,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 18:14:34,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:34,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:34,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:34,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075778389] [2020-10-28 18:14:34,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:34,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:34,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335425095] [2020-10-28 18:14:34,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:14:34,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:34,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:14:34,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:34,803 INFO L87 Difference]: Start difference. First operand 20261 states and 28521 transitions. Second operand 5 states. [2020-10-28 18:14:37,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:37,550 INFO L93 Difference]: Finished difference Result 35684 states and 50147 transitions. [2020-10-28 18:14:37,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:14:37,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-28 18:14:37,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:37,586 INFO L225 Difference]: With dead ends: 35684 [2020-10-28 18:14:37,586 INFO L226 Difference]: Without dead ends: 15539 [2020-10-28 18:14:37,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:14:37,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15539 states. [2020-10-28 18:14:38,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15539 to 15539. [2020-10-28 18:14:38,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15539 states. [2020-10-28 18:14:38,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15539 states to 15539 states and 21800 transitions. [2020-10-28 18:14:38,469 INFO L78 Accepts]: Start accepts. Automaton has 15539 states and 21800 transitions. Word has length 149 [2020-10-28 18:14:38,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:38,470 INFO L481 AbstractCegarLoop]: Abstraction has 15539 states and 21800 transitions. [2020-10-28 18:14:38,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:14:38,470 INFO L276 IsEmpty]: Start isEmpty. Operand 15539 states and 21800 transitions. [2020-10-28 18:14:38,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 18:14:38,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:38,489 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] [2020-10-28 18:14:38,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:14:38,489 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:38,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:38,490 INFO L82 PathProgramCache]: Analyzing trace with hash -2064970126, now seen corresponding path program 1 times [2020-10-28 18:14:38,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:38,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254122064] [2020-10-28 18:14:38,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:38,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:38,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:38,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:38,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:38,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:38,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:38,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:39,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:39,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:43,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:43,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 18:14:43,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:14:43,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:14:43,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:43,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:14:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:14:43,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 18:14:43,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:44,071 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:14:44,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:44,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:44,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:44,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:44,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:14:44,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:44,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:44,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254122064] [2020-10-28 18:14:44,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:44,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:44,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502373176] [2020-10-28 18:14:44,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:14:44,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:44,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:14:44,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:44,153 INFO L87 Difference]: Start difference. First operand 15539 states and 21800 transitions. Second operand 5 states. [2020-10-28 18:14:47,865 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:14:49,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:49,328 INFO L93 Difference]: Finished difference Result 37976 states and 53131 transitions. [2020-10-28 18:14:49,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:14:49,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-28 18:14:49,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:49,363 INFO L225 Difference]: With dead ends: 37976 [2020-10-28 18:14:49,364 INFO L226 Difference]: Without dead ends: 23081 [2020-10-28 18:14:49,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:14:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23081 states. [2020-10-28 18:14:50,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23081 to 23053. [2020-10-28 18:14:50,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23053 states. [2020-10-28 18:14:50,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23053 states to 23053 states and 31636 transitions. [2020-10-28 18:14:50,954 INFO L78 Accepts]: Start accepts. Automaton has 23053 states and 31636 transitions. Word has length 156 [2020-10-28 18:14:50,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:50,954 INFO L481 AbstractCegarLoop]: Abstraction has 23053 states and 31636 transitions. [2020-10-28 18:14:50,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:14:50,954 INFO L276 IsEmpty]: Start isEmpty. Operand 23053 states and 31636 transitions. [2020-10-28 18:14:50,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 18:14:50,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:50,975 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] [2020-10-28 18:14:50,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:14:50,975 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:50,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:50,976 INFO L82 PathProgramCache]: Analyzing trace with hash -194735234, now seen corresponding path program 1 times [2020-10-28 18:14:50,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:50,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164565808] [2020-10-28 18:14:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:51,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:51,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:51,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:51,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:51,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:51,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:51,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:56,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:56,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 18:14:56,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:14:56,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 18:14:56,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:56,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:14:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-28 18:14:56,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 18:14:56,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:56,468 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:14:56,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:56,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:56,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:56,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:56,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:56,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:14:56,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:56,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:56,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:56,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:56,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164565808] [2020-10-28 18:14:56,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:56,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:14:56,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259418994] [2020-10-28 18:14:56,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:14:56,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:56,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:14:56,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:14:56,525 INFO L87 Difference]: Start difference. First operand 23053 states and 31636 transitions. Second operand 4 states. [2020-10-28 18:14:59,395 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:15:01,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:01,976 INFO L93 Difference]: Finished difference Result 60163 states and 84021 transitions. [2020-10-28 18:15:01,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:15:01,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-28 18:15:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:02,045 INFO L225 Difference]: With dead ends: 60163 [2020-10-28 18:15:02,046 INFO L226 Difference]: Without dead ends: 42709 [2020-10-28 18:15:02,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42709 states. [2020-10-28 18:15:04,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42709 to 42662. [2020-10-28 18:15:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42662 states. [2020-10-28 18:15:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42662 states to 42662 states and 58650 transitions. [2020-10-28 18:15:05,027 INFO L78 Accepts]: Start accepts. Automaton has 42662 states and 58650 transitions. Word has length 158 [2020-10-28 18:15:05,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:05,028 INFO L481 AbstractCegarLoop]: Abstraction has 42662 states and 58650 transitions. [2020-10-28 18:15:05,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:15:05,028 INFO L276 IsEmpty]: Start isEmpty. Operand 42662 states and 58650 transitions. [2020-10-28 18:15:05,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 18:15:05,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:05,055 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] [2020-10-28 18:15:05,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:15:05,056 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:05,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:05,056 INFO L82 PathProgramCache]: Analyzing trace with hash 2105428291, now seen corresponding path program 1 times [2020-10-28 18:15:05,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:05,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359193557] [2020-10-28 18:15:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:05,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:05,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:05,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:05,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:05,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:05,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:05,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:10,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:10,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 18:15:10,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:15:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:15:10,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:10,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:15:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:15:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 18:15:10,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:10,627 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:15:10,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:10,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:10,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:10,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:10,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:10,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 18:15:10,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:10,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:15:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:10,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:15:10,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:10,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:10,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359193557] [2020-10-28 18:15:10,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:10,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:10,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096923769] [2020-10-28 18:15:10,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:15:10,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:10,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:15:10,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:15:10,723 INFO L87 Difference]: Start difference. First operand 42662 states and 58650 transitions. Second operand 6 states. [2020-10-28 18:15:11,215 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 18:15:14,088 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:15:16,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:16,785 INFO L93 Difference]: Finished difference Result 73425 states and 103954 transitions. [2020-10-28 18:15:16,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:15:16,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-10-28 18:15:16,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:16,835 INFO L225 Difference]: With dead ends: 73425 [2020-10-28 18:15:16,835 INFO L226 Difference]: Without dead ends: 40035 [2020-10-28 18:15:16,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:15:16,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40035 states. [2020-10-28 18:15:19,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40035 to 40027. [2020-10-28 18:15:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40027 states. [2020-10-28 18:15:19,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40027 states to 40027 states and 56514 transitions. [2020-10-28 18:15:19,373 INFO L78 Accepts]: Start accepts. Automaton has 40027 states and 56514 transitions. Word has length 158 [2020-10-28 18:15:19,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:19,374 INFO L481 AbstractCegarLoop]: Abstraction has 40027 states and 56514 transitions. [2020-10-28 18:15:19,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:15:19,374 INFO L276 IsEmpty]: Start isEmpty. Operand 40027 states and 56514 transitions. [2020-10-28 18:15:19,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 18:15:19,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:19,389 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] [2020-10-28 18:15:19,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:15:19,390 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:19,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:19,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1206826685, now seen corresponding path program 1 times [2020-10-28 18:15:19,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:19,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7276715] [2020-10-28 18:15:19,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:19,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:19,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:19,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:19,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:19,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:19,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:24,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:24,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 18:15:24,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:15:24,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:15:24,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:24,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:15:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 18:15:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 18:15:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:24,923 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:15:24,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:24,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:24,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:24,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:24,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:24,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:15:24,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:24,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:24,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:24,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7276715] [2020-10-28 18:15:24,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:24,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:15:24,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075730740] [2020-10-28 18:15:24,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:15:24,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:24,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:15:24,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:15:24,980 INFO L87 Difference]: Start difference. First operand 40027 states and 56514 transitions. Second operand 5 states. [2020-10-28 18:15:28,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:28,968 INFO L93 Difference]: Finished difference Result 75632 states and 106824 transitions. [2020-10-28 18:15:28,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:15:28,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-28 18:15:28,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:29,006 INFO L225 Difference]: With dead ends: 75632 [2020-10-28 18:15:29,006 INFO L226 Difference]: Without dead ends: 35827 [2020-10-28 18:15:29,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:15:29,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35827 states. [2020-10-28 18:15:31,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35827 to 35827. [2020-10-28 18:15:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35827 states. [2020-10-28 18:15:31,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35827 states to 35827 states and 50565 transitions. [2020-10-28 18:15:31,330 INFO L78 Accepts]: Start accepts. Automaton has 35827 states and 50565 transitions. Word has length 158 [2020-10-28 18:15:31,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:31,330 INFO L481 AbstractCegarLoop]: Abstraction has 35827 states and 50565 transitions. [2020-10-28 18:15:31,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:15:31,330 INFO L276 IsEmpty]: Start isEmpty. Operand 35827 states and 50565 transitions. [2020-10-28 18:15:31,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 18:15:31,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:31,347 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] [2020-10-28 18:15:31,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:15:31,348 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:31,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:31,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1580523222, now seen corresponding path program 1 times [2020-10-28 18:15:31,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:31,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742878570] [2020-10-28 18:15:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:31,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:31,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:31,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:31,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:31,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:36,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:36,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 18:15:36,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:15:36,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:15:36,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:36,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:15:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 18:15:36,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 18:15:36,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:36,868 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:15:36,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:36,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:36,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:36,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:36,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:36,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:15:36,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:36,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:36,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742878570] [2020-10-28 18:15:36,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:36,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:15:36,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10847589] [2020-10-28 18:15:36,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:15:36,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:36,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:15:36,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:15:36,936 INFO L87 Difference]: Start difference. First operand 35827 states and 50565 transitions. Second operand 6 states. [2020-10-28 18:15:37,368 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:15:41,374 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 18:15:41,804 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 18:15:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:46,481 INFO L93 Difference]: Finished difference Result 105386 states and 154286 transitions. [2020-10-28 18:15:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:15:46,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-10-28 18:15:46,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:46,584 INFO L225 Difference]: With dead ends: 105386 [2020-10-28 18:15:46,584 INFO L226 Difference]: Without dead ends: 87288 [2020-10-28 18:15:46,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:15:46,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87288 states. [2020-10-28 18:15:51,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87288 to 62498. [2020-10-28 18:15:51,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62498 states. [2020-10-28 18:15:51,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62498 states to 62498 states and 88532 transitions. [2020-10-28 18:15:51,415 INFO L78 Accepts]: Start accepts. Automaton has 62498 states and 88532 transitions. Word has length 164 [2020-10-28 18:15:51,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:15:51,416 INFO L481 AbstractCegarLoop]: Abstraction has 62498 states and 88532 transitions. [2020-10-28 18:15:51,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:15:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 62498 states and 88532 transitions. [2020-10-28 18:15:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 18:15:51,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:15:51,446 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] [2020-10-28 18:15:51,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:15:51,447 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:15:51,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:15:51,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2105448119, now seen corresponding path program 1 times [2020-10-28 18:15:51,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:15:51,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858850026] [2020-10-28 18:15:51,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:15:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:51,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:51,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:51,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:51,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:51,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:56,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:56,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 18:15:56,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:15:56,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 18:15:56,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:56,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:15:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 18:15:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 18:15:56,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:57,038 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:15:57,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:15:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:15:57,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:15:57,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:15:57,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:15:57,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:15:57,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:15:57,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:15:57,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:15:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:15:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:15:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:15:57,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:15:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:15:57,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858850026] [2020-10-28 18:15:57,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:15:57,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:15:57,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484548290] [2020-10-28 18:15:57,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:15:57,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:15:57,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:15:57,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:15:57,091 INFO L87 Difference]: Start difference. First operand 62498 states and 88532 transitions. Second operand 6 states. [2020-10-28 18:15:57,542 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:16:01,250 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 18:16:04,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:16:04,471 INFO L93 Difference]: Finished difference Result 87035 states and 127013 transitions. [2020-10-28 18:16:04,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:16:04,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-10-28 18:16:04,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:16:04,529 INFO L225 Difference]: With dead ends: 87035 [2020-10-28 18:16:04,530 INFO L226 Difference]: Without dead ends: 54291 [2020-10-28 18:16:04,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:16:04,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54291 states. [2020-10-28 18:16:08,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54291 to 54288. [2020-10-28 18:16:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54288 states. [2020-10-28 18:16:08,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54288 states to 54288 states and 75135 transitions. [2020-10-28 18:16:08,471 INFO L78 Accepts]: Start accepts. Automaton has 54288 states and 75135 transitions. Word has length 164 [2020-10-28 18:16:08,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:16:08,471 INFO L481 AbstractCegarLoop]: Abstraction has 54288 states and 75135 transitions. [2020-10-28 18:16:08,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:16:08,471 INFO L276 IsEmpty]: Start isEmpty. Operand 54288 states and 75135 transitions. [2020-10-28 18:16:08,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 18:16:08,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:16:08,496 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] [2020-10-28 18:16:08,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:16:08,496 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:16:08,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:16:08,496 INFO L82 PathProgramCache]: Analyzing trace with hash -948983209, now seen corresponding path program 1 times [2020-10-28 18:16:08,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:16:08,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251313337] [2020-10-28 18:16:08,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:16:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:08,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:08,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:08,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:08,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:13,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:13,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 18:16:13,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:16:13,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 18:16:13,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:13,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:16:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 18:16:13,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 18:16:13,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:14,059 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:16:14,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:16:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:14,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:14,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:14,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:16:14,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:16:14,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:16:14,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:14,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:16:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:16:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:16:14,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:16:14,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251313337] [2020-10-28 18:16:14,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:16:14,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:16:14,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052017764] [2020-10-28 18:16:14,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:16:14,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:16:14,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:16:14,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:16:14,110 INFO L87 Difference]: Start difference. First operand 54288 states and 75135 transitions. Second operand 5 states. [2020-10-28 18:16:18,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:16:18,991 INFO L93 Difference]: Finished difference Result 99065 states and 137427 transitions. [2020-10-28 18:16:18,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:16:18,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-28 18:16:18,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:16:19,037 INFO L225 Difference]: With dead ends: 99065 [2020-10-28 18:16:19,038 INFO L226 Difference]: Without dead ends: 44854 [2020-10-28 18:16:19,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:16:19,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44854 states. [2020-10-28 18:16:22,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44854 to 44854. [2020-10-28 18:16:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44854 states. [2020-10-28 18:16:22,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44854 states to 44854 states and 62389 transitions. [2020-10-28 18:16:22,218 INFO L78 Accepts]: Start accepts. Automaton has 44854 states and 62389 transitions. Word has length 164 [2020-10-28 18:16:22,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:16:22,219 INFO L481 AbstractCegarLoop]: Abstraction has 44854 states and 62389 transitions. [2020-10-28 18:16:22,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:16:22,219 INFO L276 IsEmpty]: Start isEmpty. Operand 44854 states and 62389 transitions. [2020-10-28 18:16:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 18:16:22,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:16:22,419 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] [2020-10-28 18:16:22,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:16:22,419 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:16:22,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:16:22,419 INFO L82 PathProgramCache]: Analyzing trace with hash 866373952, now seen corresponding path program 1 times [2020-10-28 18:16:22,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:16:22,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412078236] [2020-10-28 18:16:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:16:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:22,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:22,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:22,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:22,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:22,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:23,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:23,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:23,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:23,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:24,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:24,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:26,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:26,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:27,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:27,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 18:16:27,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:16:27,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 18:16:27,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:27,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:27,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:16:27,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 18:16:27,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 18:16:27,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:27,923 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:16:27,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:16:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:27,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:27,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:16:27,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:16:27,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:16:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:16:27,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:16:27,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:16:27,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:16:27,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:16:27,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:16:27,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:16:27,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:16:27,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412078236] [2020-10-28 18:16:27,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:16:27,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:16:27,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108948647] [2020-10-28 18:16:27,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:16:27,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:16:27,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:16:27,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:16:27,970 INFO L87 Difference]: Start difference. First operand 44854 states and 62389 transitions. Second operand 5 states. [2020-10-28 18:16:28,437 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 18:16:33,612 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:16:39,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:16:39,087 INFO L93 Difference]: Finished difference Result 143698 states and 202548 transitions. [2020-10-28 18:16:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:16:39,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-28 18:16:39,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:16:39,230 INFO L225 Difference]: With dead ends: 143698 [2020-10-28 18:16:39,231 INFO L226 Difference]: Without dead ends: 103805 [2020-10-28 18:16:39,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:16:39,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103805 states. [2020-10-28 18:16:46,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103805 to 103752. [2020-10-28 18:16:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103752 states. [2020-10-28 18:16:47,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103752 states to 103752 states and 144393 transitions. [2020-10-28 18:16:47,149 INFO L78 Accepts]: Start accepts. Automaton has 103752 states and 144393 transitions. Word has length 172 [2020-10-28 18:16:47,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:16:47,150 INFO L481 AbstractCegarLoop]: Abstraction has 103752 states and 144393 transitions. [2020-10-28 18:16:47,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:16:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 103752 states and 144393 transitions. [2020-10-28 18:16:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 18:16:47,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:16:47,187 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] [2020-10-28 18:16:47,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:16:47,187 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:16:47,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:16:47,188 INFO L82 PathProgramCache]: Analyzing trace with hash -107963301, now seen corresponding path program 1 times [2020-10-28 18:16:47,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:16:47,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288205331] [2020-10-28 18:16:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:16:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:16:47,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:47,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:47,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:48,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:49,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:16:51,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking...